💾 Archived View for gemini.bortzmeyer.org › rfc-mirror › rfc3318.txt captured on 2022-01-08 at 18:43:53.
⬅️ Previous capture (2021-11-30)
-=-=-=-=-=-=-
Network Working Group R. Sahita, Ed.
Request for Comments: 3318 S. Hahn
Category: Informational Intel Labs
K. Chan
Nortel Networks
K. McCloghrie
Cisco Systems
March 2003
Framework Policy Information Base
Status of this Memo
This memo provides information for the Internet community. It does
not specify an Internet standard of any kind. Distribution of this
memo is unlimited.
Copyright Notice
Copyright (C) The Internet Society (2003). All Rights Reserved.
Abstract
This document defines a set of PRovisioning Classes (PRCs) and
textual conventions that are common to all clients that provision
policy using Common Open Policy Service (COPS) protocol for
Provisioning.
Structure of Policy Provisioning Information (SPPI) describes a
structure for specifying policy information that can then be
transmitted to a network device for the purpose of configuring policy
at that device. The model underlying this structure is one of well-
defined (PRCs) and instances of these classes (PRIs) residing in a
virtual information store called the Policy Information Base (PIB).
One way to provision policy is by means of the (COPS) protocol with
the extensions for provisioning. This protocol supports multiple
clients, each of which may provision policy for a specific policy
domain such as QoS, virtual private networks, or security.
As described in COPS usage for Policy Provisioning (COPS-PR), each
client supports a non-overlapping and independent set of PIB modules.
However, some PRovisioning Classes are common to all subject-
categories (client-types) and need to be present in each.
Sahita, et. al. Informational [Page 1]
RFC 3318 Framework Policy Information Base March 2003
Table of Contents
Conventions used in this document.................................2
1. Glossary.......................................................2
2. General PIB Concepts...........................................3
2.1. Roles......................................................3
2.1.1. An Example.............................................5
2.2. Management of Role-Combinations from the PDP...............6
2.3. Updating a Request State...................................7
2.3.1 Full Request State......................................8
2.3.2 Installing PRIs in a Request............................8
2.3.3 Updating PRIs in a Request..............................8
2.3.4 Removing PRIs from a Request............................9
2.3.5 Removing EXTENDED, AUGMENTED PRIs.......................9
2.3.6 Error Handling in Request updates.......................9
2.4. Multiple PIB Instances....................................10
2.5. Reporting and Configuring of Device Capabilities..........11
2.6. Reporting of Device Limitations...........................12
3. The Framework TC PIB module...................................12
4. Summary of the Framework PIB..................................17
4.1. Base PIB classes Group....................................17
4.2. Device Capabilities group.................................19
4.3. Classifier group..........................................20
4.4. Marker group..............................................20
5. The Framework PIB Module......................................21
6. Security Considerations.......................................66
7. IANA Considerations...........................................67
8. References....................................................67
8.1 Normative References.......................................67
8.2 Informative References.....................................68
9. Acknowledgments...............................................68
10. Authors' Addresses...........................................69
11. Full Copyright Statement.....................................70
Conventions used in this document
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
document are to be interpreted as described in [RFC2119].
1. Glossary
PRC PRovisioning Class. A type of policy data. See [POLTERM].
PRI PRovisioning Instance. An instance of a PRC. See [POLTERM].
PIB Policy Information Base. The database of policy information.
See [POLTERM]
PDP Policy Decision Point. See [RAP-FRAMEWORK].
PEP Policy Enforcement Point. See [RAP-FRAMEWORK].
Sahita, et. al. Informational [Page 2]
RFC 3318 Framework Policy Information Base March 2003
2. General PIB Concepts
2.1. Roles
The policy to apply to an interface may depend on many factors, such
as immutable characteristics of the interface (e.g., Ethernet or
frame relay), the status of the interface (e.g., half or full
duplex), or user configuration (e.g., branch office or headquarters
interface). Rather than specifying policies explicitly for each
interface of all devices in the network, policies are specified in
terms of interface functionality.
To describe these functionalities of an interface, we use the concept
of "Roles". A Role is simply a string that is associated with an
interface. A given interface may have any number of roles
simultaneously. Provisioning classes have an attribute called a
"RoleCombination" which is a lexicographically ordered set of roles.
Instances of a given PRovisioning Class are applied to an interface
if and only if the set of roles in the role combination matches the
set of the roles of the interface.
Thus, roles provide a way to bind policy to interfaces without having
to explicitly identify interfaces in a consistent manner across all
network devices. That is, roles provide a level of indirection to
the application of a set of policies to specific interfaces. This
separates the policy definition from device implementation specific
interface identification. Furthermore, if the same policy is being
applied to several interfaces, that policy needs to be pushed to the
device only once, rather than once per interface, as long as the
interfaces are configured with the same role combination.
We point out that, in the event that the administrator needs to have
a unique policy for each interface, the administrator can configure
each interface with a unique role.
The PEP sends all its Capability Set Names, Role Combinations, Policy
Controlled Interfaces, and their relationships to the PDP in the
first COPS request (REQ) message for a handle, and whenever any
updates or deletes occur. The PDP can install new instances or
change existing instances of these PRIs. This operation can also
occur in subsequent request messages generated in response to COPS
state synchronization (SSQ) requests and local configuration changes.
The comparing of roles (or role combinations) is case sensitive.
Sahita, et. al. Informational [Page 3]
RFC 3318 Framework Policy Information Base March 2003
By convention, when formatting the role-combination for exchange
within a protocol message, within a PIB object's value, or as a
printed value, the set is formatted in lexicographical order of the
role's ASCII values; that is, the role that is first is formatted
first. For example, "a+b" and "b+a" are NOT different role-
combinations; rather, they are different formatting of the same
role-combination, and hence for this example:
- "a+b" is the valid formatting of that role-combination,
- "b+a" is an invalid formatting of that role-combination.
The role-combination of interfaces to which no roles have been
assigned is known as the "null" role-combination. (Note the
deliberate use of lower-case letters for "null" so that it avoids
confusion with the ASCII NULL character that has a value of zero but
a length of one.)
In an "install" or an "install-notify" class, the wildcard role-
combination "*" can be used. In addition to providing for
interface-specific roles, it also allows for other optimizations in
reducing the number of role-combinations for which a policy has to be
specified. For example:
Suppose we have three interfaces:
Roles A, B and R1 are assigned to interface I1
Roles A, B and R2 are assigned to interface I2
Roles A, B and R3 are assigned to interface I3
Then, a PRI of a fictional IfDscpAssignTable that has the following
values for its attributes:
ifDscpAssignPrid = 1
ifDscpAssignRoles = "*+A+B"
ifDscpAssignName = "4queues"
ifDscpAssignDscpMap = 1
will apply to all three interfaces, because "*" matches with R1, R2
and R3. The policies can be assigned to an interface due to more
than one wild-carded role combo matching a given interface's role
combo string. The PDP should attempt to resolve conflicts between
policies before sending policies to the PEP. In the situation where
the PDP sends multiple policies to a PEP and they do conflict, either
because of an error by the PDP or because of a device specific
conflict, the PEP MUST reject the installation of the conflicting
policies and return an error.
Sahita, et. al. Informational [Page 4]
RFC 3318 Framework Policy Information Base March 2003
Formally,
- The wildcard Role is denoted by "*",
- The "*" Role is not allowed to be defined as part of the role-
combination of an interface as notified by the PEP to the PDP; it
is only allowed in policies installed/deleted via COPS-PR from the
PDP to the PEP.
- For a policy to apply to an interface when the policy's role-
combination is "*+a+b", the interface's role-combination:
- Must include "a" and "b", and
- Can include zero or more other roles.
- The wildcard character "*" is listed before the other roles as "*"
is lexicographically before "a"; however, the wildcard matches any
zero or more roles, irrespective of lexicographical order. For
example: "*+b+e+g" would match "a+b+c+e+f+g".
Note that the characters "+" and "*" MUST not be used in an
interface Role. The Framework Role PIB module in section 4 of this
document contains the Role and RoleCombination Textual Conventions.
2.1.1. An Example
The functioning of roles might be best understood by an example.
Suppose I have a device with three interfaces, with roles as follows:
IF1: "finance"
IF2: "finance"
IF3: "manager"
Suppose, I also have a PDP with two policies:
P1: Packets from finance department (role "finance") get DSCP 5
P2: Packets from managers (role "manager") get DSCP 6
To obtain policy, the PEP reports to the PDP that it has some
interfaces with role combination "finance" and some with role
combination "manager". In response, the PDP downloads policy P1
associated with role combination "finance" and downloads a second
policy P2 associated with role combination "manager".
Now suppose the finance person attached to IF2 is promoted to manager
and so the system administrator adds the role "manager" to IF2. The
PEP now reports to the PDP that it has three role combinations: some
interfaces with role combination "finance", some with role
combination "manager" and some with role combination
"finance+manager". In response, the PDP downloads an additional
third policy associated with the new role combination
"finance+manager".
Sahita, et. al. Informational [Page 5]
RFC 3318 Framework Policy Information Base March 2003
How the PDP determines the policy for this new role combination is
entirely the responsibility of the PDP. It could do so
algorithmically or by rule. For example, there might be a rule that
specifies that manager policy takes preference over department
policy. Or there might be a third policy installed in the PDP as
follows:
P3: Packets from finance managers (role "finance" and role
"manager") get DSCP 7
The point here is that the PDP is required to determine what policy
applies to this new role combination and to download a third policy
to the PEP for the role combination "finance+manager", even if that
policy is the same as one already downloaded. The PEP is not
required (or allowed) to construct policy for new role combinations
from existing policy.
2.2. Management of Role-Combinations from the PDP
The PEP notifies the PDP of the Role-Combination assigned to each
interface and capability set name in a COPS configuration request
(instances of the frwkIfRoleComboTable). The first request sent to
the PDP must be a 'full state' request. A 'full state' request for a
PEP includes notify and install-notify table PRIs for the PEP which
must be interpreted as the complete state of the PEP and must not be
interpreted as updates to any previous set of PRIs sent in a previous
message. Any previous PRIs from the PEP should be discarded when a
'full state' request is received for the particular request handle.
A request is specified as a 'full state' request by setting the
frwkPibIncarnationFullState attribute in the frwkPibIncarnation PRI
sent in the request.
All existing frwkIfRoleCombo instances must be sent to the PDP in the
first configuration request for a request handle. If the Role-
Combinations are not assigned specific values, default ('null')
Role-Combinations must be sent to the PDP for all ifIndices active on
the PEP and updates must be sent every time the IfIndices are
updated. The PEP may notify the PDP of the Capability sets (if any)
via the frwkCapabilitySetTable. If the PEP does not need to notify
the PDP of capability sets, it must set the capability set name in
the frwkIfRoleComboTable instances to a zero length string.
In response to this configuration request, if applicable, the PDP may
send policies for the PEP in a solicited decision or must send a null
decision. The PEP must then send a solicited report message for the
decision.
Sahita, et. al. Informational [Page 6]
RFC 3318 Framework Policy Information Base March 2003
At any later time, the PDP can update the Role-Combinations assigned
to a specific interface, identified by IfIndex, or for an aggregate,
identified by the capability set name, via an unsolicited decision to
the PEP on any open request handle. The PDP does this by sending
updated PRIs for the frwkIfRoleComboTable.
When the Interface Role Combination associations are updated by the
PDP, the PEP SHOULD send updated 'full state' requests for all open
contexts. A context is an instantiation of the PIB module(s)
namespace identified by a unique COPS handle for a particular COPS
client type. This is true even if the PEP's request state changes
due to an internal event or if the state is changed by the PDP. If
the role-combination updates were sent by the PDP, the PEP SHOULD
send these updated requests only if it can process the unsolicited
decision containing the frwkIfRoleCombo PRIs successfully, and it
MUST do so after sending the success report for the unsolicited
decision. If the PEP failed to process the decision (i.e., the
frwkIfRoleCombo PRIs), it MUST only send a failure report to the PDP.
On the other hand, the PDP must not expect to receive the updated
requests with the revised role-combination information until after it
receives a success report for these updates from the PEP. If the PDP
does not receive updated requests on some request handles, the PEP
must not be sent decision updates for that frwkIfRoleCombo updates,
i.e., the PDP must have the previous request state that it maintained
for that request handle.
Note that, any unsolicited decisions received by the PEP in the time
period after it receives updates to its Role-Combination associations
and before receiving solicited decisions for the updated requests it
sent for all context handles, could possibly contain outdated
policies corresponding to the old Role-Combination associations as
notified by this PEP in a previous request state.
The PDP must respond to the updated requests by solicited decisions,
sending policies if applicable or null decisions. The PEP must
respond to these solicited decisions with solicited reports to
complete the transaction.
2.3. Updating a Request State
This section describes the messages exchanged between the PEP and PDP
when the PEP is updating a previously sent request for a particular
COPS handle. Note that a PEP can incrementally update a request only
if the frwkPibIncarnationFullState attribute is shown to be supported
via the supported PRC table. If this attribute is not supported, the
PDP must treat all PEP requests as the full request state.
Sahita, et. al. Informational [Page 7]
RFC 3318 Framework Policy Information Base March 2003
2.3.1 Full Request State
When the PEP wants to send the entire request state to the PDP (for
example, in response to a Synchronize State Request from the PDP),
the PEP MUST send the incarnation instance with the
frwkPibIncarnationFullState attribute set to 'true'.
A PDP that receives an incarnation instance in the request message
with this attribute set to 'true', must clear the request information
it maintains for this request handle and re-install the information
received.
If this attribute is set to 'false' or if the incarnation instance is
missing in the request message, the request must be interpreted as an
incremental update to the previous request message.
2.3.2 Installing PRIs in a Request
If the PEP wants to install additional PRIs for a request handle, the
PEP MUST ensure that the frwkPibIncarnationFullState attribute is set
to 'false', and the PEP MUST use new (unused in this context)
InstanceIds [SPPI] for these PRIs.
When a PDP receives instances with new InstanceIds for a request with
the frwkPibIncarnationFullState in the incarnation instance set to
'false', or if the request has no incarnation information, it must
interpret these PRIs as an incremental update to the request state
and add them to the request state it maintains for this handle.
2.3.3 Updating PRIs in a Request
If the PEP wants to update previously installed PRIs for a request
handle, the PEP MUST ensure that the frwkPibIncarnationFullState
attribute is set to 'false' for these PRIs. Note that the PEP must
send the same InstanceIds for the PRIs being updated. If the PEP
uses new InstanceIds, the PDP must interpret them as Install's for
this request state.
When a PDP receives a request with instances having InstanceIds that
exist in its state for that handle with the
frwkPibIncarnationFullState in the incarnation instance set to
'false' or if the request has no incarnation information, it must
interpret these PRIs as an update to the PRIs in the request state it
maintains for this handle.
Sahita, et. al. Informational [Page 8]
RFC 3318 Framework Policy Information Base March 2003
2.3.4 Removing PRIs from a Request
If the PEP wants to remove previously installed PRIs for a request
handle, the PEP MUST ensure that the frwkPibIncarnationFullState
attribute is set to 'false', and MUST send the PRI bindings with the
PRID set to the InstanceId of the PRI to be removed, and the length
field in the EPD object header set to the header length only,
effectively setting the data length to zero.
Note that the PEP must send the same InstanceIds for the PRIs being
removed. If the PEP sends new InstanceIds and the length field in
the EPD object header is set to the header length only (implying the
data length is zero), the PEP is attempting to remove an
unknown/non-existent PRI. This SHOULD result in the PDP sending
error PRIs in the solicited decision (see section 2.3.6 for a
description of the frwkErrorTable).
If the PEP sends new InstanceIds, and the length field in the EPD
object header is greater than the header length only (implying the
EPD object has some attributes encoded in it), the PDP will interpret
this as an install of the PRI if it can decode the EPD successfully.
When a PDP receives a request with instances having InstanceIds that
exist in its state for that handle with the
frwkPibIncarnationFullState in the incarnation instance set to
'false', or if the request has no incarnation information, and the
length field in the EPD object header is set to the header length
only (implying the data length is zero), it must remove these PRIs
from the request state it maintains for this handle.
2.3.5 Removing EXTENDED, AUGMENTED PRIs
The PEP should remove the extended/augmented PRIs when it removes the
base PRIs in the same COPS message. See [SPPI] for a description of
EXTENDED/AUGMENTED PRCs. A PDP that receives removes for a base PRI
must implicitly remove the extensions.
2.3.6 Error Handling in Request updates
If the PDP cannot process all the request installs/updates/removes in
the COPS request message successfully, it MUST rollback to its
previous request state and it MUST send a solicited decision to the
PEP that contains frwkErrorTable instances. These instances contain
an error code and a sub-code as defined in the [COPS-PR] CPERR
object. For example, if the PEP tries to remove an instance that
does not exist, the 'priInstanceInvalid' error code must be sent to
the PEP in a frwkError PRI. The frwkError PRIs also contain the PRC
and the InstanceId of the error-causing PRI. The PEP may then
Sahita, et. al. Informational [Page 9]
RFC 3318 Framework Policy Information Base March 2003
examine these error PRIs and resend the modified request. Note that,
until the PEP resends the request updates/removes, it will have
configuration information for the last successful request state it
sent to the PDP.
2.4. Multiple PIB Instances
[COPS-PR] supports multiple, disjoint, independent instances of the
PIB to represent multiple instances of configured policy. The intent
is to allow for the pre-provisioning of policy that can then be made
active by a single, short decision from the PDP.
A COPS context can be defined as an independent COPS request state
for a particular subject category (client-type). A context may be an
outsourcing context or a configuration context. A configuration
context is an instance of the PIB triggered and controlled by the
PDP, which contains device setup information. This device
configuration information dictates the device behavior as specified
by the PDP. An outsourcing context on the other hand, is a PIB
instance that is triggered from the PEP side and is a request to the
PDP for action. The action requested will be interpreted in the
domain of the client-type. Configuration contexts belong to a set of
configuration contexts for a specific client type - out of which one
configuration context may be active. However, multiple outsourcing
contexts can be active simultaneously.
With the [COPS-PR] protocol, each of these states is identified by a
unique client handle. The creation and deletion of these PIB
instances can be controlled by the PDP as described in [COPS-PR] or
can be triggered by an event by the PEP. A PEP must open at least
one "request-state" for configuration for a given subject-category
(client type). Additional "request-states" at the PEP may be
initiated by the PDP or asynchronously generated by the PEP for
outsourcing due to local events, which will be fully specified by the
PRID/EPD data carried in the request.
The frwkPibIncarnationInCtxtSet flag defines a set of contexts out of
which only one context can be active at any given time. This set is
called the 'configuration contexts' set. At most, one context may be
active from this 'configuration context' set at any given time.
Contexts that have the frwkPibIncarnationInCtxtSet attribute set to
'true' belong to this set. Contexts that do not belong to this set
have the frwkPibIncarnationInCtxtSet set to 'false' and belong to the
set of 'outsourcing contexts'. Note that a PEP can have these two
sets of contexts only if the frwkPibIncarnationInCtxtSet attribute is
shown to be supported via the supported PRC table. If the
Sahita, et. al. Informational [Page 10]
RFC 3318 Framework Policy Information Base March 2003
frwkPibIncarnationInCtxtSet is not supported, a PEP must treat all
contexts as belonging to the set of 'configuration contexts' i.e., at
the most one context can be active at any given time.
Note that in the event that a PEP has a capability change such as a
card hot swap or any other change in its notify information that may
warrant a policy refresh, a subsequent complete or incremental
request must be issued to the PDP containing the new/updated
capabilities for all the configuration contexts. A request for re-
configuration is issued for all request state configuration contexts,
both for the active configuration context as well as any inactive
configuration contexts. This is to ensure that when an inactive
configuration context is activated, it has been pre-configured with
policies compatible with the PEP's current capabilities.
Although many PIB instances may be configured on a device (the
maximum number of these instances being determined by the device
itself), only one of the contexts from the 'configuration contexts'
set can be active at any given time; the active one being selected by
the PDP. The Framework PIB supports the attribute
frwkPibIncarnationActive in the frwkPibIncarnationTable to allow the
PDP to denote the PIB instance as being active in a COPS decision
message, and similarly, to report the active state (active or not) of
the PIB instance to the PDP in a COPS request message.
When the PEP installs an attribute frwkPibIncarnationActive that is
'true' in one PIB instance which belongs to the 'configuration
contexts' set, the PEP must ensure, re-setting the attribute if
necessary, that the frwkPibIncarnationActive attribute is 'false' in
all other installed contexts that belong to this set. To switch
contexts, the PDP should set the frwkPibIncarnationActive attribute
to 'true' in the context it wants to make the active context. The
PDP should set this attribute in a context to 'false' only if it
wants to send an inactive context to the PEP or deactivate the active
context on the PEP. If an active context is made inactive without
activating another context, the PEP must not have any policies
enforced from any configuration contexts installed.
2.5. Reporting and Configuring of Device Capabilities
Each network device providing policy-based services has its own
inherent capabilities. These capabilities can be hardware specific,
e.g., an Ethernet interface supporting input classification, or can
be statically configured, e.g., supported queuing disciplines. These
capabilities are organized into Capability Sets, with each Capability
Set given a unique name (frwkCapabilitySetName) and associated with a
set of Role Combinations. In that way, each Role Combination may be
associated with a set of interfaces. These capabilities are
Sahita, et. al. Informational [Page 11]
RFC 3318 Framework Policy Information Base March 2003
communicated to the PDP when policy is requested by the PEP. Knowing
device capabilities, the PDP can send the PRIs relevant to the
specific device, rather than sending the entire PIB.
Specific capability PRCs may be defined in other PIBs. These
capability instances are grouped via the frwkCapabilitySetTable. If
the PEP wishes to send capability information to the PDP, the PIB
must indicate which capabilities the PEP may send to the PDP by means
of the 'notify' PIB-ACCESS clause as described in [SPPI]. If a PIB
does not have any capabilities to communicate to the PDP, it must not
send any instances for the frwkCapabilitySetTable. If in this case
the frwkIfRoleCombo table is used to communicate role combinations
assigned to interfaces (via IfIndex), the frwkRoleComboCapSetName
attribute in the frwkIfRoleComboTable instances must be set to a zero
length string.
2.6. Reporting of Device Limitations
To facilitate efficient policy installation, it is important to
understand a device's limitations in relation to the advertised
device capabilities. Limitations may be class-based, e.g., an
"install" class is supported as a "notify" or only a limited number
of class instances may be created, or attribute-based. Attribute
limitations, such as supporting a restricted set of enumerations or
requiring related attributes to have certain values, detail
implementation limitations at a fine level of granularity.
A PDP can avoid certain installation issues in a proactive fashion by
taking into account a device's limitations prior to policy
installation rather than in a reactive mode during installation. As
with device capabilities, device limitations are communicated to the
PDP when policy is requested.
Reported device limitations may be accompanied by guidance values
that can be used by a PDP to determine acceptable values for the
identified attributes.
3. The Framework TC PIB module
FRAMEWORK-TC-PIB PIB-DEFINITIONS ::= BEGIN
IMPORTS MODULE-IDENTITY, TEXTUAL-CONVENTION,
Unsigned32, pib FROM COPS-PR-SPPI;
frwkTcPib MODULE-IDENTITY
SUBJECT-CATEGORIES { all }
LAST-UPDATED "200302130000Z" -- 13 Feb 2003
ORGANIZATION "IETF RAP WG"
Sahita, et. al. Informational [Page 12]
RFC 3318 Framework Policy Information Base March 2003
CONTACT-INFO "Keith McCloghrie
Cisco Systems, Inc.
170 West Tasman Drive,
San Jose, CA 95134-1706 USA
Phone: +1 408 526 5260
Email: kzm@cisco.com
John Seligson
Nortel Networks, Inc.
4401 Great America Parkway
Santa Clara, CA 95054 USA
Phone: +1 408 495 2992
Email: jseligso@nortelnetworks.com
Ravi Sahita
Intel Labs.
2111 NE 25th Ave.
Hillsboro, OR 97124 USA
Phone: +1 503 712 1554
Email: ravi.sahita@intel.com
RAP WG Mailing list: rap@ops.ietf.org "
DESCRIPTION
"The PIB module containing the Role and RoleCombination
Textual Conventions and other generic TCs.
Copyright (C) The Internet Society (2003). This version of
this PIB module is part of RFC 3318; see the RFC itself for
full legal notices."
REVISION "200302130000Z" -- 13 Feb 2003
DESCRIPTION "Initial version, published in RFC 3318."
::= { pib 3 }
Role ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"A role represents a functionality characteristic or
capability of a resource to which policies are applied.
Examples of roles include Backbone_interface,
Frame_Relay_interface, BGP-capable-router, web-server,
firewall, etc.
The only valid character set is US-ASCII. Valid characters
are a-z, A-Z, 0-9, period, hyphen and underscore. A role
must always start with a letter (a-z or A-Z). A role must
not contain the US-ASCII characters '*' or '+' since they
have special meaning associated with them, explained in the
RoleCombination TEXTUAL CONVENTION."
Sahita, et. al. Informational [Page 13]
RFC 3318 Framework Policy Information Base March 2003
SYNTAX OCTET STRING (SIZE (1..31))
RoleCombination ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"An octet string containing concatenated Roles. For the
format specification of roles, refer to the 'Role' TEXTUAL-
CONVENTION. A valid Role Combination must be formed by a set
of valid Roles, concatenated by the US-ASCII character '+',
where the roles are in lexicographic order from minimum to
maximum. For example, 'a+b' and 'b+a' are NOT different
role-combinations; rather, they are different formatting of
the same (one) role-combination.
Notice the roles within a role-combination are in
Lexicographic order from minimum to maximum, hence, we
declare:
'a+b' is the valid formatting of the role-combination,
'b+a' is an invalid formatting of the role-combination.
Notice the need of zero-length role-combination as the role-
combination of interfaces to which no roles have been
assigned. This role-combination is also known as the 'null'
role-combination. (Note the deliberate use of lower case
letters to avoid confusion with the US-ASCII NULL character
which has a value of zero but length of one.)
The US-ASCII character '*' is used to specify a wild carded
Role Combination. '*' must not be used to wildcard Roles.
Hence, we declare:
'*+a+b' is a valid wild carded Role Combination.
'eth*+a+b' is not a valid wild carded Role Combination.
Note that since Roles are lexicographically listed in a Role
Combination, the following is an invalid role combination,
since '*' is lexicographically before 'a': 'a+b+*'."
SYNTAX OCTET STRING (SIZE (0..255))
PrcIdentifierOid ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"An OID that identifies a PRC. The value MUST be an OID
assigned to a PRC's entry definition. The Entry definition
of a PRC has an OID value XxxTable.1 where XxxTable is the
OID assigned to the PRC table object.
An attribute with this syntax MUST specify a PRC, which is
defined in the PIB module(s) registered in the context of
the client-type used.
Sahita, et. al. Informational [Page 14]
RFC 3318 Framework Policy Information Base March 2003
An attribute with this syntax cannot have the value 0.0
(zeroDotZero). If the attribute using this syntax can be set
to 0.0 use the PrcIdentifierOidOrZero TEXTUAL-CONVENTION
which makes such use explicit."
SYNTAX OBJECT IDENTIFIER
PrcIdentifierOidOrZero ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"An OID that identifies a PRC or zeroDotZero (0.0). The
value MUST be an OID assigned to a PRC's entry definition or
0.0 (zeroDotZero). The Entry definition of a PRC has an OID
value XxxTable.1 where XxxTable is the OID assigned to the
PRC table object.
An attribute with this syntax can have the value 0.0
(zeroDotZero) to indicate that it currently does not
identify a PRC."
SYNTAX OBJECT IDENTIFIER
AttrIdentifier ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"A Unsigned32 value that identifies an attribute in a PRC by
its sub-id. The sub-id is the OID assigned to this attribute
in the PRC definition.
A AttrIdentifier value is always interpreted within the
context of an attribute of type PrcIdentifierOid or
PrcIdentifierOidOrZero. The PrcIdentifierOid (or
PrcIdentifierOidOrZero) object which defines the context
must be registered immediately before the object which uses
the AttrIdentifier textual convention. If the context
defining attribute is of type PrcIdentifierOidOrZero and has
the value 0.0, then in that case this attribute value has no
meaning.
An attribute with this syntax MUST specify a sub-id which
MUST be defined in the PRC identified (if any) in the
PrcIdentifierOid (or PrcIdentifierOidOrZero) attribute. The
PrcIdentifierOid (orZero) and the AttrIdentifier attributes
together identify a particular attribute in a particular
PRC.
Sahita, et. al. Informational [Page 15]
RFC 3318 Framework Policy Information Base March 2003
An attribute with this syntax cannot have the value 0
(zero). If the attribute using this syntax can be set
to 0 use the AttrIdentifierOrZero TEXTUAL-CONVENTION which
makes that explicit."
SYNTAX Unsigned32 (1..4294967295)
AttrIdentifierOrZero ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"A Unsigned32 value that identifies an attribute in a PRC by
its sub-id or has the value 0 (zero). The sub-id if non-
zero, is the OID assigned to this attribute in the PRC
definition.
An AttrIdentifierOrZero value is always interpreted within
the context of an attribute of type PrcIdentifierOid or
PrcIdentifierOidOrZero. The PrcIdentifierOid (or
PrcIdentifierOidOrZero) object that defines the context must
be registered immediately before the object which uses the
AttrIdentifierOrZero textual convention. If the context
defining attribute is of type PrcIdentifierOidOrZero and has
the value 0.0, then in that case this attribute value has no
meaning.
An attribute with this syntax can have the value 0 (zero) to
indicate that it currently does not identify a PRC
attribute. If it has a non-zero value, the
PrcIdentifierOid (orZero) and the AttrIdentifierOrZero
attributes together identify a particular attribute in a
particular PRC."
SYNTAX Unsigned32
AttrIdentifierOid ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"An OID that identifies an attribute in a PRC. The value
MUST be an OID assigned to a PRC's attribute definition. The
last sub-id is the sub-id of the attribute as it is
defined in the PRC entry definition. The prefix OID (after
dropping the last sub-id) is the OID assigned to the Entry
object of a defined PRC. The Entry definition of a PRC has
an OID value XxxTable.1 where XxxTable is the OID assigned
to the PRC Table object.
An attribute with this syntax MUST not have the value 0.0
(zeroDotZero). If 0.0 is a valid value, the TEXTUAL
CONVENTION AttrIdentifierOidOrZero must be used which makes
such use explicit."
Sahita, et. al. Informational [Page 16]
RFC 3318 Framework Policy Information Base March 2003
SYNTAX OBJECT IDENTIFIER
AttrIdentifierOidOrZero ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"An OID that identifies an attribute in a PRC or has a value
0.0 (zeroDotZero). The value MUST be an OID assigned to a
PRC's attribute definition or the value 0.0.
If not 0.0, the last sub-id MUST be the sub-id of the
attribute as it is defined in the PRC Entry object
definition. The prefix OID (after dropping the last sub-id)
is the OID assigned to the Entry object of a defined PRC.
The Entry definition of a PRC has an OID value XxxTable.1
Where, XxxTable is the OID assigned to the PRC Table
object.
An attribute with this syntax can have the value 0.0
(zeroDotZero) to indicate that it currently does not
identify a PRC's attribute."
SYNTAX OBJECT IDENTIFIER
ClientType ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"An Unsigned32 value that identifies a COPS Client-type. An
attribute with this syntax must be set to zero if it does
not specify a COPS client-type for the PRI."
REFERENCE
"The COPS (Common Open Policy Service) Protocol, RFC 2748."
SYNTAX Unsigned32 (0..65535)
ClientHandle ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"An octet string that identifies a COPS Client handle. A
zero length value implies the attribute does not specify a
valid client handle."
REFERENCE
"The COPS (Common Open Policy Service) Protocol, RFC 2748."
SYNTAX OCTET STRING (SIZE(0..65535))
END
Sahita, et. al. Informational [Page 17]
RFC 3318 Framework Policy Information Base March 2003
4. Summary of the Framework PIB
The Framework PIB defines four groups of PRCs:
4.1. Base PIB classes Group
This contains PRCs intended to describe the PRCs supported by the
PEP, PRC and/or attribute limitations and its current configuration.
PRC Support Table
As the technology evolves, we expect devices to be enhanced
with new PIBs, existing PIBs to add new PRCs and existing PRCs
to be augmented or extended with new attributes. Also, it is
likely that some existing PRCs or individual attributes of PRCs
will be deprecated. The PRC Support Table describes the PRCs
that the device supports as well as the individual attributes
of each PRC. Using this information the PDP can potentially
tailor the policy to more closely match the capabilities of the
device. The PRC Support Table instances are specific to the
particular Subject Category (Client-Type). That is, the PRC
Support Table for Subject Category 'A' will not include
instances for classes supported by the Subject Category 'B'.
Note that the COPS client-type [COPS] used for Framework PIB
PRIs sent/received over COPS-PR MUST be the unique SUBJECT-
CATEGORY number assigned for the area of policy being managed
(e.g., QoS, Security etc). The PEP MUST ignore the attributes
that it reports as not Supported in the decision from the PDP.
The PEP SHOULD not send duplicate PRC support instances in a
COPS Request and the PDP MUST ignore duplicate instances and
MUST use the first instance received for a supported PRC in a
COPS Request.
PIB Incarnation Table
This PRC contains exactly one row (corresponding to one PRI)
per context. It identifies the PDP that was the last to
download policy into the device and also contains an identifier
to identify the version of the policy currently downloaded.
This identifier, both its syntax and value, is meaningful only
to the PDPs. It is intended to be a mechanism whereby a PDP,
when accepting a connection from a PEP, can easily identify a
known incarnation of policy. This PRC defines a flag via which
the installed contexts are divided into a set of contexts
('configuration contexts') out of which only one context is
active and a the remaining contexts form a set of 'outsourcing
contexts' which are all active. The incarnation PRC also
defines an attribute to indicate which configuration context is
Sahita, et. al. Informational [Page 18]
RFC 3318 Framework Policy Information Base March 2003
the active one at the present time in the 'configuration
contexts' set. The incarnation instance is specific to the
particular Subject Category (Client-Type).
Component Limitations Table
Some devices may not be able to implement the full range of
values for all attributes. In principle, each PRC supports a
set of errors that the PEP can report to the PDP in the event
that the specified policy is not implementable. It may be
preferable for the PDP to be informed of the device limitations
before actually attempting to install policy, and while the
error can indicate that a particular attribute value is
unacceptable to the PEP, this does not help the PDP ascertain
which values would be acceptable. To alleviate these
limitations, the PEP can report some limitations of attribute
values and/or classes and possibly guidance values for the
attribute in the Component Limitations Table
Device Identification Table
This PRC contains a single PRI that contains device-specific
information that is used to facilitate efficient policy
installation by a PDP. The instance of this PRC is reported to
the PDP in a COPS request message so that the PDP can take into
account certain device characteristics during policy
installation.
4.2. Device Capabilities group
This group contains the PRCs that describe the characteristics of
interfaces of the device and the Role Combinations assigned to them.
Capabilities Set Table
The capabilities the PEP supports are described by rows in this
PRC (frwkCapabilitySetTable). Each row, or instance of this
class, associates a unique capability name with a set of
capabilities that an entity on the PEP may support. The unique
name is used to form a set of capabilities that the name
represents. The capability references can specify instances in
relevant capability tables in any PIB. The PEP notifies the
PDP of these capability sets and then the PDP configures the
interfaces, per role combination. The unique name
(frwkCapabilitySetName) is not to be confused with the IfType
object in the Interfaces Group MIB [RFC2863].
Sahita, et. al. Informational [Page 19]
RFC 3318 Framework Policy Information Base March 2003
Interface and Role Combination Table
The Capabilities Set Table (explained above) describes the
entities on the PEP (for example, interfaces) by their
capabilities, by assigning the capability sets a unique name
(frwkCapabilitySetName). It is possible to tailor the behavior
of interfaces by assigning specific role-combinations to the
capability sets. This allows interfaces with the same
capability sets to be assigned different policies, based on the
current roles assigned to them. At the PDP, configuration is
done in terms of these interface capability set names and the
role-combinations assigned to them. Thus, each row of this
class is a <Interface Index, interface capability set name,
Role Combo> tuple, that indicates the roles that have been
assigned to a particular capability set (as identified by
frwkRoleComboCapSetName) and to a particular interface. Note
that the uniqueness criteria for this PRC has all the
attributes, thus a frwkRoleComboCapSetName may have multiple
role-combinations that it is associated with. Via the IfIndex,
this PRC answers the questions of 'which interfaces have a
specific role combination?' and 'what role combination a
specific interface is a part of?'.
4.3. Classifier group
This group contains the IP, IEEE 802 and Internal Label Classifier
elements. The set of tables consist of a Base Filter table that
contains the Index InstanceId and the Negation flag for the filter.
This frwkBaseFilterTable is extended to form the IP Filter table, the
802 Filter table [802] and the Internal Label table. Filters may
also be defined outside this document and used to extend the Base
Filter table.
The Extended classes do not have a separate Index value. Instances of
the extended classes have the same indices as their base class
instance. Inheritance is achieved using the EXTENDS keyword as
defined in [SPPI].
4.4. Marker group
This group contains the 802 marker and internal label marker PRCs.
The 802 marker may be applied to mark 802 packets with the required
VLAN Id and/or priority value. The Internal Label marker is applied
to traffic in order to label it with a network device specific label.
Such a label is used to assist the differentiation of an input flow
after it has been aggregated with other flows. The label is
Sahita, et. al. Informational [Page 20]
RFC 3318 Framework Policy Information Base March 2003
implementation specific and may be used for other policy related
functions like flow accounting purposes and/or other data path
treatments.
5. The Framework PIB Module
FRAMEWORK-PIB PIB-DEFINITIONS ::= BEGIN
IMPORTS
Unsigned32, Integer32, MODULE-IDENTITY,
MODULE-COMPLIANCE, OBJECT-TYPE, OBJECT-GROUP, pib
FROM COPS-PR-SPPI
InstanceId, Prid
FROM COPS-PR-SPPI-TC
RoleCombination, PrcIdentifierOid, AttrIdentifierOrZero,
ClientType, ClientHandle
FROM FRAMEWORK-TC-PIB
InetAddress, InetAddressType,
InetAddressPrefixLength, InetPortNumber
FROM INET-ADDRESS-MIB
InterfaceIndex
FROM IF-MIB
DscpOrAny
FROM DIFFSERV-DSCP-TC
TruthValue, PhysAddress
FROM SNMPv2-TC
SnmpAdminString
FROM SNMP-FRAMEWORK-MIB;
frameworkPib MODULE-IDENTITY
SUBJECT-CATEGORIES { all }
LAST-UPDATED "200302130000Z" -- 13 Feb 2003
ORGANIZATION "IETF RAP WG"
CONTACT-INFO "
Keith McCloghrie
Cisco Systems, Inc.
170 West Tasman Drive,
San Jose, CA 95134-1706 USA
Phone: +1 408 526 5260
Email: kzm@cisco.com
John Seligson
Nortel Networks, Inc.
4401 Great America Parkway
Santa Clara, CA 95054 USA
Phone: +1 408 495 2992
Email: jseligso@nortelnetworks.com
Sahita, et. al. Informational [Page 21]
RFC 3318 Framework Policy Information Base March 2003
Ravi Sahita
Intel Labs.
2111 NE 25th Ave.
Hillsboro, OR 97124 USA
Phone: +1 503 712 1554
Email: ravi.sahita@intel.com
RAP WG Mailing list: rap@ops.ietf.org"
DESCRIPTION
"A PIB module containing the base set of PRCs that
provide support for management of multiple PIB contexts,
association of roles to device capabilities and other
reusable PRCs. PEPs are required for to implement this
PIB if the above features are desired. This PIB defines
PRCs applicable to 'all' subject-categories.
Copyright (C) The Internet Society (2003). This version
of this PIB module is part of RFC 3318; see the RFC
itself for full legal notices."
REVISION "200302130000Z" -- 13 Feb 2003
DESCRIPTION
"Initial version, published in RFC 3318."
::= { pib 2 }
--
-- The root OID for PRCs in the Framework PIB
--
frwkBasePibClasses
OBJECT IDENTIFIER ::= { frameworkPib 1 }
--
-- PRC Support Table
--
Sahita, et. al. Informational [Page 22]
RFC 3318 Framework Policy Information Base March 2003
frwkPrcSupportTable OBJECT-TYPE
SYNTAX SEQUENCE OF FrwkPrcSupportEntry
PIB-ACCESS notify
STATUS current
DESCRIPTION
"Each instance of this PRC specifies a PRC that the device
supports and a bit string to indicate the attributes of the
class that are supported. These PRIs are sent to the PDP to
indicate to the PDP which PRCs, and which attributes of
these PRCs, the device supports.
All install and install-notify PRCs supported by the device
must be represented in this PRC. Notify PRCs may be
represented for informational purposes."
::= { frwkBasePibClasses 1 }
frwkPrcSupportEntry OBJECT-TYPE
SYNTAX FrwkPrcSupportEntry
STATUS current
DESCRIPTION
"An instance of the frwkPrcSupport class that identifies a
specific PRC and associated attributes as supported
by the device."
PIB-INDEX { frwkPrcSupportPrid }
UNIQUENESS { frwkPrcSupportSupportedPrc }
::= { frwkPrcSupportTable 1 }
FrwkPrcSupportEntry ::= SEQUENCE {
frwkPrcSupportPrid InstanceId,
frwkPrcSupportSupportedPrc PrcIdentifierOid,
frwkPrcSupportSupportedAttrs OCTET STRING
}
frwkPrcSupportPrid OBJECT-TYPE
SYNTAX InstanceId
STATUS current
DESCRIPTION
"An arbitrary integer index that uniquely identifies an
instance of the frwkPrcSupport class."
::= { frwkPrcSupportEntry 1 }
Sahita, et. al. Informational [Page 23]
RFC 3318 Framework Policy Information Base March 2003
frwkPrcSupportSupportedPrc OBJECT-TYPE
SYNTAX PrcIdentifierOid
STATUS current
DESCRIPTION
"The object identifier of a supported PRC. The value is the
OID of the Entry object of the PRC definition. The Entry
Object definition of a PRC has an OID with value XxxTable.1
Where, XxxTable is the OID assigned to the PRC Table
Object definition. There may not be more than one instance
of the frwkPrcSupport class with the same value of
frwkPrcSupportSupportedPrc."
::= { frwkPrcSupportEntry 2 }
frwkPrcSupportSupportedAttrs OBJECT-TYPE
SYNTAX OCTET STRING
STATUS current
DESCRIPTION
"A bit string representing the supported attributes of the
class that is identified by the frwkPrcSupportSupportedPrc
object.
Each bit of this bit string corresponds to a class
attribute, with the most significant bit of the i-th octet
of this octet string corresponding to the (8*i - 7)-th
attribute, and the least significant bit of the i-th octet
corresponding to the (8*i)-th class attribute. Each bit
specifies whether or not the corresponding class attribute
is currently supported, with a '1' indicating support and a
'0' indicating no support.
If the value of this bit string is N bits long and there are
more than N class attributes then the bit string is
logically extended with 0's to the required length.
On the other hand, If the PDP receives a bit string of
length N and there are less that N class attributes then the
PDP should ignore the extra bits in the bit string, i.e.,
assume those attributes are unsupported."
REFERENCE
"COPS Usage for Policy Provisioning. RFC 3084, section
2.2.1."
::= { frwkPrcSupportEntry 3 }
--
-- PIB Incarnation Table
--
Sahita, et. al. Informational [Page 24]
RFC 3318 Framework Policy Information Base March 2003
frwkPibIncarnationTable OBJECT-TYPE
SYNTAX SEQUENCE OF FrwkPibIncarnationEntry
PIB-ACCESS install-notify
STATUS current
DESCRIPTION
"This PRC contains a single PRovisioning Instance per
installed context that identifies the current incarnation
of the PIB and the PDP or network manager that installed
this incarnation. The instance of this PRC is reported to
the PDP in the REQ message so that the PDP can (attempt to)
ascertain the current state of the PIB. A network manager
may use the instance to determine the state of the device."
::= { frwkBasePibClasses 2 }
frwkPibIncarnationEntry OBJECT-TYPE
SYNTAX FrwkPibIncarnationEntry
STATUS current
DESCRIPTION
"An instance of the frwkPibIncarnation class. Only
one instance of this PRC is ever instantiated per context"
PIB-INDEX { frwkPibIncarnationPrid }
::= { frwkPibIncarnationTable 1 }
FrwkPibIncarnationEntry ::= SEQUENCE {
frwkPibIncarnationPrid InstanceId,
frwkPibIncarnationName SnmpAdminString,
frwkPibIncarnationId OCTET STRING,
frwkPibIncarnationLongevity INTEGER,
frwkPibIncarnationTtl Unsigned32,
frwkPibIncarnationInCtxtSet TruthValue,
frwkPibIncarnationActive TruthValue,
frwkPibIncarnationFullState TruthValue
}
frwkPibIncarnationPrid OBJECT-TYPE
SYNTAX InstanceId
STATUS current
DESCRIPTION
"An index to uniquely identify an instance of this PRC."
::= { frwkPibIncarnationEntry 1 }
Sahita, et. al. Informational [Page 25]
RFC 3318 Framework Policy Information Base March 2003
frwkPibIncarnationName OBJECT-TYPE
SYNTAX SnmpAdminString (SIZE (0..255))
STATUS current
DESCRIPTION
"The name of the PDP that installed the current incarnation
of the PIB into the device. A zero-length string value for
this type implies the PDP has not assigned this type any
value. By default, it is the zero length string."
::= { frwkPibIncarnationEntry 2 }
frwkPibIncarnationId OBJECT-TYPE
SYNTAX OCTET STRING (SIZE (0..255))
STATUS current
DESCRIPTION
"An ID to identify the current incarnation. It has meaning
to the PDP/manager that installed the PIB and perhaps its
standby PDPs/managers. A zero-length string value for
this type implies the PDP has not assigned this type any
value. By default, it is the zero-length string."
::= { frwkPibIncarnationEntry 3 }
frwkPibIncarnationLongevity OBJECT-TYPE
SYNTAX INTEGER {
expireNever(1),
expireImmediate(2),
expireOnTimeout(3)
}
STATUS current
DESCRIPTION
"This attribute controls what the PEP does with the
downloaded policy on a Client Close message or a loss of
connection to the PDP.
If set to expireNever, the PEP continues to operate with the
installed policy indefinitely. If set to expireImmediate,
the PEP immediately expires the policy obtained from the PDP
and installs policy from local configuration. If set to
expireOnTimeout, the PEP continues to operate with the
policy installed by the PDP for a period of time specified
by frwkPibIncarnationTtl. After this time (and it has not
reconnected to the original or new PDP) the PEP expires this
policy and reverts to local configuration.
For all cases, it is the responsibility of the PDP to check
the incarnation and download new policy, if necessary, on a
reconnect. On receiving a Remove-State for the active
Sahita, et. al. Informational [Page 26]
RFC 3318 Framework Policy Information Base March 2003
context, this attribute value MUST be ignored and the PEP
should expire the policy in that active context immediately.
Policy enforcement timing only applies to policies that have
been installed dynamically (e.g., by a PDP via COPS)."
REFERENCE
"COPS Usage for Policy Provisioning. RFC 3084."
::= { frwkPibIncarnationEntry 4 }
frwkPibIncarnationTtl OBJECT-TYPE
SYNTAX Unsigned32
UNITS "seconds"
STATUS current
DESCRIPTION
"The number of seconds after a Client Close or TCP timeout
for which the PEP continues to enforce the policy in the
PIB. After this interval, the PIB is considered expired and
the device no longer enforces the policy installed in the
PIB.
This attribute is only meaningful if
frwkPibIncarnationLongevity is set to expireOnTimeout."
::= { frwkPibIncarnationEntry 5 }
frwkPibIncarnationInCtxtSet OBJECT-TYPE
SYNTAX TruthValue
STATUS current
DESCRIPTION
"When the PDP installs a PRI with this flag set to 'true' it
implies this context belongs to the set of contexts out of
which at the most one context can be active at a given time.
If this attribute is set to 'false' this context is one of
the outsourcing (simultaneous active) contexts on the PEP.
This attribute is 'true' for all contexts belong to the set
of configuration contexts. Within the configuration context
set, one context can be active identified by the
frwkPibIncarnationActive attribute."
REFERENCE
"TruthValue Textual Convention, defined in RFC 2579."
::= { frwkPibIncarnationEntry 6 }
Sahita, et. al. Informational [Page 27]
RFC 3318 Framework Policy Information Base March 2003
frwkPibIncarnationActive OBJECT-TYPE
SYNTAX TruthValue
STATUS current
DESCRIPTION
"When the PDP installs a PRI on the PEP with this attribute
set to 'true' and if this context belongs to the
'configuration contexts' set, i.e., the
frwkPibIncarnationInCtxtSet is set to 'true', then the PIB
instance to which this PRI belongs must become the active
PIB instance. In this case, the previous active instance
from this set MUST become inactive and the
frwkPibIncarnationActive attribute in that PIB instance MUST
be set to 'false'.
When the PDP installs an attribute frwkPibIncarnationActive
on the PEP that is 'true' in one PIB instance and if the
context belongs to the 'configuration contexts' set, the PEP
must ensure, re-setting the attribute if necessary, that the
frwkPibIncarnationActive attribute is 'false' in all other
contexts which belong to the 'configuration contexts' set."
::= { frwkPibIncarnationEntry 7 }
frwkPibIncarnationFullState OBJECT-TYPE
SYNTAX TruthValue
STATUS current
DESCRIPTION
"This attribute is interpreted only when sent in a COPS
request message from the PEP to the PDP. It does not have
any meaning when sent from the PDP to the PEP.
If this attribute is set to 'true' by the PEP, then the
request that the PEP sends to the PDP must be interpreted as
the complete configuration request for the PEP. The PDP must
in this case refresh the request information for the
handle that the request containing this PRI was received on.
If this attribute is set to 'false', then the
request PRIs sent in the request must be interpreted as
updates to the previous request PRIs sent using that handle.
See section 3.3 for details on updating request state
information."
REFERENCE
"RFC 3318 Section 2.3"
::= { frwkPibIncarnationEntry 8 }
--
-- Device Identification Table
Sahita, et. al. Informational [Page 28]
RFC 3318 Framework Policy Information Base March 2003
--
frwkDeviceIdTable OBJECT-TYPE
SYNTAX SEQUENCE OF FrwkDeviceIdEntry
PIB-ACCESS notify
STATUS current
DESCRIPTION
"This PRC contains a single PRovisioning Instance that
contains general purpose device-specific information that is
used to facilitate efficient policy communication by a PDP.
The instance of this PRC is reported to the PDP in a COPS
request message so that the PDP can take into account
certain device characteristics during policy installation."
::= { frwkBasePibClasses 3 }
frwkDeviceIdEntry OBJECT-TYPE
SYNTAX FrwkDeviceIdEntry
STATUS current
DESCRIPTION
"An instance of the frwkDeviceId class. Only one instance of
this PRC is ever instantiated."
PIB-INDEX { frwkDeviceIdPrid }
::= { frwkDeviceIdTable 1 }
FrwkDeviceIdEntry ::= SEQUENCE {
frwkDeviceIdPrid InstanceId,
frwkDeviceIdDescr SnmpAdminString,
frwkDeviceIdMaxMsg Unsigned32,
frwkDeviceIdMaxContexts Unsigned32
}
frwkDeviceIdPrid OBJECT-TYPE
SYNTAX InstanceId
STATUS current
DESCRIPTION
"An index to uniquely identify an instance of this PRC."
::= { frwkDeviceIdEntry 1 }
Sahita, et. al. Informational [Page 29]
RFC 3318 Framework Policy Information Base March 2003
frwkDeviceIdDescr OBJECT-TYPE
SYNTAX SnmpAdminString (SIZE (1..255))
STATUS current
DESCRIPTION
"A textual description of the PEP. This value should include
the name and version identification of the PEP's hardware
and software."
::= { frwkDeviceIdEntry 2 }
frwkDeviceIdMaxMsg OBJECT-TYPE
SYNTAX Unsigned32 (64..4294967295)
UNITS "octets"
STATUS current
DESCRIPTION
"The maximum COPS-PR message size, in octets, that the
device is capable of processing. Received messages with a
size in excess of this value must cause the PEP to return an
error to the PDP containing the global error code
'maxMsgSizeExceeded'. This is an additional error-avoidance
mechanism to allow the administrator to know the maximum
message size supported so that they have the ability to
control the message size of messages sent to the device.
This attribute must have a non-zero value. The device should
send the MAX value for Unsigned32 for this attribute if it
not defined."
DEFVAL { 4294967295 }
::= { frwkDeviceIdEntry 3 }
frwkDeviceIdMaxContexts OBJECT-TYPE
SYNTAX Unsigned32 (1..4294967295)
UNITS "contexts"
STATUS current
DESCRIPTION
"The maximum number of unique contexts supported by
the device. This is an additional error-avoidance mechanism
to allow the administrators to have the ability to know the
maximum number of contexts supported so that they can
control the number of configuration contexts they install on
the device. This attribute must have a non-zero value. The
device should send the MAX value for Unsigned32 for this
attribute if it not defined."
DEFVAL { 4294967295 }
::= { frwkDeviceIdEntry 4 }
--
Sahita, et. al. Informational [Page 30]
RFC 3318 Framework Policy Information Base March 2003
-- Component Limitations Table
--
frwkCompLimitsTable OBJECT-TYPE
SYNTAX SEQUENCE OF FrwkCompLimitsEntry
PIB-ACCESS notify
STATUS current
DESCRIPTION
"This PRC supports the ability to export information
detailing PRC/attribute implementation limitations to the
policy management system. Instances of this PRC apply only
for PRCs with access type 'install' or 'install-notify'.
Each instance of this PRC identifies a PRovisioning Class
or attribute and a limitation related to the implementation
of the class/attribute in the device. Additional information
providing guidance related to the limitation may also be
present. These PRIs are sent to the PDP to indicate which
PRCs or PRC attributes the device supports in a restricted
manner."
::= { frwkBasePibClasses 4 }
frwkCompLimitsEntry OBJECT-TYPE
SYNTAX FrwkCompLimitsEntry
STATUS current
DESCRIPTION
"An instance of the frwkCompLimits class that identifies
a PRC or PRC attribute and a limitation related to the PRC
or PRC attribute implementation supported by the device.
COPS-PR lists the error codes that MUST be returned (if
applicable)for policy installation that don't abide by the
restrictions indicated by the limitations exported. [SPPI]
defines an INSTALL-ERRORS clause that allows PIB designers
to define PRC specific error codes that can be returned for
policy installation. This allows efficient debugging of PIB
implementations."
REFERENCE
"COPS Usage for Policy Provisioning. RFC 3084."
PIB-INDEX { frwkCompLimitsPrid }
UNIQUENESS { frwkCompLimitsComponent,
frwkCompLimitsAttrPos,
frwkCompLimitsNegation,
frwkCompLimitsType,
frwkCompLimitsSubType,
frwkCompLimitsGuidance }
Sahita, et. al. Informational [Page 31]
RFC 3318 Framework Policy Information Base March 2003
::= { frwkCompLimitsTable 1 }
FrwkCompLimitsEntry ::= SEQUENCE {
frwkCompLimitsPrid InstanceId,
frwkCompLimitsComponent PrcIdentifierOid,
frwkCompLimitsAttrPos AttrIdentifierOrZero,
frwkCompLimitsNegation TruthValue,
frwkCompLimitsType INTEGER,
frwkCompLimitsSubType INTEGER,
frwkCompLimitsGuidance OCTET STRING
}
frwkCompLimitsPrid OBJECT-TYPE
SYNTAX InstanceId
STATUS current
DESCRIPTION
"An arbitrary integer index that uniquely identifies an
instance of the frwkCompLimits class."
::= { frwkCompLimitsEntry 1 }
frwkCompLimitsComponent OBJECT-TYPE
SYNTAX PrcIdentifierOid
STATUS current
DESCRIPTION
"The value is the OID of a PRC (the table entry) which is
supported in some limited fashion or contains an attribute
that is supported in some limited fashion with regard to
it's definition in the associated PIB module. The same OID
may appear in the table several times, once for each
implementation limitation acknowledged by the device."
::= { frwkCompLimitsEntry 2 }
frwkCompLimitsAttrPos OBJECT-TYPE
SYNTAX AttrIdentifierOrZero
STATUS current
DESCRIPTION
"The relative position of the attribute within the PRC
specified by the frwkCompLimitsComponent. A value of 1 would
represent the first columnar object in the PRC and a value
of N would represent the Nth columnar object in the PRC. A
value of zero (0) indicates that the limit applies to the
PRC itself and not to a specific attribute."
::= { frwkCompLimitsEntry 3 }
Sahita, et. al. Informational [Page 32]
RFC 3318 Framework Policy Information Base March 2003
frwkCompLimitsNegation OBJECT-TYPE
SYNTAX TruthValue
STATUS current
DESCRIPTION
"A boolean value ,if 'true', negates the component limit
exported."
::= { frwkCompLimitsEntry 4 }
frwkCompLimitsType OBJECT-TYPE
SYNTAX INTEGER {
priSpaceLimited(1),
attrValueSupLimited(2),
attrEnumSupLimited(3),
attrLengthLimited(4),
prcLimitedNotify(5)
}
STATUS current
DESCRIPTION
"A value describing an implementation limitation for the
device related to the PRC or PRC attribute identified by
the frwkCompLimitsComponent and the frwkCompLimitsAttrPos
attributes.
Values for this object are one of the following:
priSpaceLimited(1) - No more instances than that specified
by the guidance value may be installed in the given class.
The component identified MUST be a valid PRC. The SubType
used MUST be valueOnly(9).
attrValueSupLimited(2) - Limited values are acceptable for
the identified component. The component identified MUST be a
valid PRC attribute. The guidance OCTET STRING will be
decoded according to the attribute type.
attrEnumSupLimited(3) - Limited enumeration values are legal
for the identified component. The attribute identified MUST
be a valid enum type.
attrLengthLimited(4) - The length of the specified
value for the identified component is limited. The component
identified MUST be a valid PRC attribute of base-type OCTET
STRING.
prcLimitedNotify (5) - The component is currently limited
for use by request or report messages prohibiting decision
installation. The component identified must be a valid PRC."
Sahita, et. al. Informational [Page 33]
RFC 3318 Framework Policy Information Base March 2003
::= { frwkCompLimitsEntry 5 }
frwkCompLimitsSubType OBJECT-TYPE
SYNTAX INTEGER {
none(1),
lengthMin(2),
lengthMax(3),
rangeMin(4),
rangeMax(5),
enumMin(6),
enumMax(7),
enumOnly(8),
valueOnly(9),
bitMask(10)
}
STATUS current
DESCRIPTION
"This object indicates the type of guidance related
to the noted limitation (as indicated by the
frwkCompLimitsType attribute) that is provided
in the frwkCompLimitsGuidance attribute.
A value of 'none(1)' means that no additional
guidance is provided for the noted limitation type.
A value of 'lengthMin(2)' means that the guidance
attribute provides data related to the minimum
acceptable length for the value of the identified
component. A corresponding class instance
specifying the 'lengthMax(3)' value is required
in conjunction with this sub-type.
A value of 'lengthMax(3)' means that the guidance
attribute provides data related to the maximum
acceptable length for the value of the identified
component. A corresponding class instance
specifying the 'lengthMin(2)' value is required
in conjunction with this sub-type.
A value of 'rangeMin(4)' means that the guidance
attribute provides data related to the lower bound
of the range for the value of the identified
component. A corresponding class instance
specifying the 'rangeMax(5)' value is required
in conjunction with this sub-type.
A value of 'rangeMax(5)' means that the guidance
attribute provides data related to the upper bound
Sahita, et. al. Informational [Page 34]
RFC 3318 Framework Policy Information Base March 2003
of the range for the value of the identified
component. A corresponding class instance
specifying the 'rangeMin(4)' value is required
in conjunction with this sub-type.
A value of 'enumMin(6)' means that the guidance
attribute provides data related to the lowest
enumeration acceptable for the value of the
identified component. A corresponding
class instance specifying the 'enumMax(7)'
value is required in conjunction with this sub-type.
A value of 'enumMax(7)' means that the guidance
attribute provides data related to the largest
enumeration acceptable for the value of the
identified component. A corresponding
class instance specifying the 'enumMin(6)'
value is required in conjunction with this sub-type.
A value of 'enumOnly(8)' means that the guidance
attribute provides data related to a single
enumeration acceptable for the value of the
identified component.
A value of 'valueOnly(9)' means that the guidance
attribute provides data related to a single
value that is acceptable for the identified
component.
A value of 'bitMask(10)' means that the guidance
attribute is a bit mask such that all the combinations of
bits set in the bitmask are acceptable values for the
identified component which should be an attribute of type
'BITS'.
For example, an implementation of the frwkIpFilter class may
be limited in several ways, such as address mask, protocol
and Layer 4 port options. These limitations could be
exported using this PRC with the following instances:
Component Type Sub-Type Guidance
------------------------------------------------------------
DstPrefixLength attrValueSupLimited valueOnly 24
SrcPrefixLength attrValueSupLimited valueOnly 24
Protocol attrValueSupLimited rangeMin 10
Protocol attrValueSupLimited rangeMax 20
Sahita, et. al. Informational [Page 35]
RFC 3318 Framework Policy Information Base March 2003
The above entries describe a number of limitations that
may be in effect for the frwkIpFilter class on a given
device. The limitations include restrictions on acceptable
values for certain attributes.
Also, an implementation of a PRC may be limited in the ways
it can be accessed. For instance, for a fictitious PRC
dscpMapEntry, which has a PIB-ACCESS of 'install-notify':
Component Type SubType Guidance
------------------------------------------------------------
dscpMapEntry prcLimitedNotify none zero-length string."
::= { frwkCompLimitsEntry 6 }
frwkCompLimitsGuidance OBJECT-TYPE
SYNTAX OCTET STRING
STATUS current
DESCRIPTION
"A value used to convey additional information related
to the implementation limitation. Note that a guidance
value will not necessarily be provided for all exported
limitations. If a guidance value is not provided, the
value must be a zero-length string.
The format of the guidance value, if one is present as
indicated by the frwkCompLimitsSubType attribute,
is described by the following table. Note that the
format of guidance value is dictated by the base-type of
the component whose limitation is being exported,
interpreted in the context of the frwkCompLimitsType and
frwkCompLimitsSubType values. Any other restrictions
(such as size/range/enumerated value) on the guidance
value MUST be complied with according to the definition
of the component for which guidance is being specified.
Note that numbers are encoded in network byte order.
Base Type Value
--------- -----
Unsigned32/Integer32/INTEGER 32-bit value.
Unsigned64/Integer64 64-bit Value.
OCTET STRING octets of data.
OID 32-bit OID components.
BITS Binary octets of length
same as Component specified."
::= { frwkCompLimitsEntry 7 }
Sahita, et. al. Informational [Page 36]
RFC 3318 Framework Policy Information Base March 2003
--
-- Complete Reference specification table
--
frwkReferenceTable OBJECT-TYPE
SYNTAX SEQUENCE OF FrwkReferenceEntry
PIB-ACCESS install-notify
STATUS current
DESCRIPTION
"Each instance of this PRC specifies a reference to a PRI
in a specific PIB context (handle) for a specific client-
type. This table gives the PDP the ability to set up
policies that span installed contexts and the PEP the
ability to reference instances in another, perhaps
configured context. The PEP must send a
'attrReferenceUnknown' COPS-PR error to the PDP if it
encounters an invalid reference. "
REFERENCE
"COPS Usage for Policy Provisioning. RFC 3084, error
codes section 4.5."
::= { frwkBasePibClasses 5 }
frwkReferenceEntry OBJECT-TYPE
SYNTAX FrwkReferenceEntry
STATUS current
DESCRIPTION
"Entry specification for the frwkReferenceTable."
PIB-INDEX { frwkReferencePrid }
UNIQUENESS { }
::= { frwkReferenceTable 1 }
FrwkReferenceEntry ::= SEQUENCE {
frwkReferencePrid InstanceId,
frwkReferenceClientType ClientType,
frwkReferenceClientHandle ClientHandle,
frwkReferenceInstance Prid
}
frwkReferencePrid OBJECT-TYPE
SYNTAX InstanceId
STATUS current
DESCRIPTION
"An arbitrary integer index that uniquely identifies an
instance of the frwkReference class."
Sahita, et. al. Informational [Page 37]
RFC 3318 Framework Policy Information Base March 2003
::= { frwkReferenceEntry 1 }
frwkReferenceClientType OBJECT-TYPE
SYNTAX ClientType
STATUS current
DESCRIPTION
"Is unused if set to zero else specifies a client-type for
which the reference is to be interpreted. This non-zero
client-type must be activated explicitly via a separate
COPS client-open else this attribute is not valid."
::= { frwkReferenceEntry 2 }
frwkReferenceClientHandle OBJECT-TYPE
SYNTAX ClientHandle
STATUS current
DESCRIPTION
"Must be set to specify a valid client-handle in the scope
of the client-type specified."
::= { frwkReferenceEntry 3 }
frwkReferenceInstance OBJECT-TYPE
SYNTAX Prid
STATUS current
DESCRIPTION
"References a PRI in the context identified by
frwkReferenceClientHandle for client-type identified by
frwkReferenceClientType."
::= { frwkReferenceEntry 4 }
--
-- Error specification table
--
frwkErrorTable OBJECT-TYPE
SYNTAX SEQUENCE OF FrwkErrorEntry
PIB-ACCESS install
STATUS current
DESCRIPTION
"Each instance of this PRC specifies a class specific
error object. Instances of this PRC are transient, i.e.,
instances received in a COPS decision message must not be
maintained by the PEP in its copy of the PIB instances. This
PRC allows a PDP to send error information to the PEP if the
PDP cannot process updates to a Request successfully."
Sahita, et. al. Informational [Page 38]
RFC 3318 Framework Policy Information Base March 2003
::= { frwkBasePibClasses 6 }
frwkErrorEntry OBJECT-TYPE
SYNTAX FrwkErrorEntry
STATUS current
DESCRIPTION
"Entry specification for the frwkErrorTable."
PIB-INDEX { frwkErrorPrid }
UNIQUENESS {
frwkErrorCode,
frwkErrorSubCode,
frwkErrorPrc,
frwkErrorInstance
}
::= { frwkErrorTable 1 }
FrwkErrorEntry ::= SEQUENCE {
frwkErrorPrid InstanceId,
frwkErrorCode Unsigned32,
frwkErrorSubCode Unsigned32,
frwkErrorPrc PrcIdentifierOid,
frwkErrorInstance InstanceId
}
frwkErrorPrid OBJECT-TYPE
SYNTAX InstanceId
STATUS current
DESCRIPTION
"An arbitrary integer index that uniquely identifies an
instance of the frwkError class."
::= { frwkErrorEntry 1 }
frwkErrorCode OBJECT-TYPE
SYNTAX Unsigned32 (0..65535)
STATUS current
DESCRIPTION
"Error code defined in COPS-PR CPERR object."
REFERENCE
"COPS Usage for Policy Provisioning. RFC 3084."
::= { frwkErrorEntry 2 }
frwkErrorSubCode OBJECT-TYPE
SYNTAX Unsigned32 (0..65535)
STATUS current
Sahita, et. al. Informational [Page 39]
RFC 3318 Framework Policy Information Base March 2003
DESCRIPTION
"The class-specific error object is used to communicate
errors relating to specific PRCs."
::= { frwkErrorEntry 3 }
frwkErrorPrc OBJECT-TYPE
SYNTAX PrcIdentifierOid
STATUS current
DESCRIPTION
"The PRC due to which the error specified by codes
(frwkErrorCode , frwkErrorSubCode) occurred."
::= { frwkErrorEntry 4 }
frwkErrorInstance OBJECT-TYPE
SYNTAX InstanceId
STATUS current
DESCRIPTION
"The PRI of the identified PRC (frwkErrorPrc) due to which
the error specified by codes (frwkErrorCode ,
frwkErrorSubCode) occurred. Must be set to zero if unused."
::= { frwkErrorEntry 5 }
--
-- The device capabilities and role combo classes group
--
frwkDeviceCapClasses
OBJECT IDENTIFIER ::= { frameworkPib 2 }
--
-- Capability Set Table
--
frwkCapabilitySetTable OBJECT-TYPE
SYNTAX SEQUENCE OF FrwkCapabilitySetEntry
PIB-ACCESS notify
STATUS current
DESCRIPTION
"This PRC describes the capability sets that exist on the
interfaces on the device. The capability set is given a
unique name that identifies a set. These capability set
names are used by the PDP to determine policy information to
be associated with interfaces that possess similar sets of
capabilities."
Sahita, et. al. Informational [Page 40]
RFC 3318 Framework Policy Information Base March 2003
::= { frwkDeviceCapClasses 1 }
frwkCapabilitySetEntry OBJECT-TYPE
SYNTAX FrwkCapabilitySetEntry
STATUS current
DESCRIPTION
"An instance of this PRC describes a particular set of
capabilities and associates a unique name with the set."
PIB-INDEX { frwkCapabilitySetPrid }
UNIQUENESS { frwkCapabilitySetName,
frwkCapabilitySetCapability }
::= { frwkCapabilitySetTable 1 }
FrwkCapabilitySetEntry ::= SEQUENCE {
frwkCapabilitySetPrid InstanceId,
frwkCapabilitySetName SnmpAdminString,
frwkCapabilitySetCapability Prid
}
frwkCapabilitySetPrid OBJECT-TYPE
SYNTAX InstanceId
STATUS current
DESCRIPTION
"An arbitrary integer index that uniquely identifies a
instance of the class."
::= { frwkCapabilitySetEntry 1 }
frwkCapabilitySetName OBJECT-TYPE
SYNTAX SnmpAdminString (SIZE (1..255))
STATUS current
DESCRIPTION
"The name for the capability set. This name is the unique
identifier of a set of capabilities. This attribute must not
be assigned a zero-length string."
::= { frwkCapabilitySetEntry 2 }
frwkCapabilitySetCapability OBJECT-TYPE
SYNTAX Prid
STATUS current
DESCRIPTION
"The complete PRC OID and instance identifier specifying the
capability PRC instance for the interface. This attribute
references a specific instance of a capability table. The
Sahita, et. al. Informational [Page 41]
RFC 3318 Framework Policy Information Base March 2003
capability table whose instance is referenced must be
defined in the client type specific PIB that this PIB is
used with. The referenced capability instance becomes a part
of the set of capabilities associated with the specified
frwkCapabilitySetName."
::= { frwkCapabilitySetEntry 3 }
--
-- Interface and Role Combination Tables
--
frwkRoleComboTable OBJECT-TYPE
SYNTAX SEQUENCE OF FrwkRoleComboEntry
PIB-ACCESS install-notify
STATUS current
DESCRIPTION
"This is an abstract PRC that may be extended or referenced
to enumerate the role combinations, capability set names
assigned to any interface on a PEP. The identification of
the interface is to be defined by its extensions or
referencing PRCs."
::= { frwkDeviceCapClasses 2 }
frwkRoleComboEntry OBJECT-TYPE
SYNTAX FrwkRoleComboEntry
STATUS current
DESCRIPTION
"An instance of this PRC describes one association of an
interface to a role-combination and capability set name .
Note that an interface can have multiple associations. This
constraint is controlled by the extending or referencing
PRC's uniqueness clause."
PIB-INDEX { frwkRoleComboPrid }
UNIQUENESS { }
::= { frwkRoleComboTable 1 }
FrwkRoleComboEntry ::= SEQUENCE {
frwkRoleComboPrid InstanceId,
frwkRoleComboRoles RoleCombination,
frwkRoleComboCapSetName SnmpAdminString
}
frwkRoleComboPrid OBJECT-TYPE
SYNTAX InstanceId
Sahita, et. al. Informational [Page 42]
RFC 3318 Framework Policy Information Base March 2003
STATUS current
DESCRIPTION
"An arbitrary integer index that uniquely identifies an
instance of the class."
::= { frwkRoleComboEntry 1 }
frwkRoleComboRoles OBJECT-TYPE
SYNTAX RoleCombination
STATUS current
DESCRIPTION
"The role combination assigned to a specific interface."
::= { frwkRoleComboEntry 2 }
frwkRoleComboCapSetName OBJECT-TYPE
SYNTAX SnmpAdminString (SIZE (0..255))
STATUS current
DESCRIPTION
"The name of the capability set associated with
the Role Combination specified in frwkRoleComboRoles. If
this is a zero length string it implies the PEP is not
exporting any capability set information for this
RoleCombination. The PDP must then use the RoleCombinations
provided as the only means of assigning policies
If a non-zero length string is specified, the name must
exist in frwkCapabilitySetTable."
::= { frwkRoleComboEntry 3 }
--
-- Interface, Role Combination association via IfIndex
--
frwkIfRoleComboTable OBJECT-TYPE
SYNTAX SEQUENCE OF FrwkIfRoleComboEntry
PIB-ACCESS install-notify
STATUS current
DESCRIPTION
"This PRC enumerates the interface to role combination and
frwkRoleComboCapSetName mapping for all policy managed
interfaces of a device. Policy for an interface depends not
only on the capability set of an interface but also on its
roles. This table specifies all the <interface index,
interface capability set name, role combination> tuples
currently on the device"
::= { frwkDeviceCapClasses 3 }
Sahita, et. al. Informational [Page 43]
RFC 3318 Framework Policy Information Base March 2003
frwkIfRoleComboEntry OBJECT-TYPE
SYNTAX FrwkIfRoleComboEntry
STATUS current
DESCRIPTION
"An instance of this PRC describes the association of
a interface to an capability set name and a role
combination.
Note that a capability set name can have multiple role
combinations assigned to it, but an IfIndex can have only
one role combination associated."
EXTENDS { frwkRoleComboEntry }
UNIQUENESS { frwkIfRoleComboIfIndex,
frwkRoleComboCapSetName }
::= { frwkIfRoleComboTable 1 }
FrwkIfRoleComboEntry ::= SEQUENCE {
frwkIfRoleComboIfIndex InterfaceIndex
}
frwkIfRoleComboIfIndex OBJECT-TYPE
SYNTAX InterfaceIndex
STATUS current
DESCRIPTION
"The value of this attribute is the ifIndex which is
associated with the specified RoleCombination and interface
capability set name."
::= { frwkIfRoleComboEntry 1 }
--
-- The Classification classes group
--
frwkClassifierClasses
OBJECT IDENTIFIER ::= { frameworkPib 3 }
--
-- The Base Filter Table
--
frwkBaseFilterTable OBJECT-TYPE
SYNTAX SEQUENCE OF FrwkBaseFilterEntry
PIB-ACCESS install
STATUS current
Sahita, et. al. Informational [Page 44]
RFC 3318 Framework Policy Information Base March 2003
DESCRIPTION
"The Base Filter class. A packet has to match all
fields in an Filter. Wildcards may be specified for those
fields that are not relevant."
::= { frwkClassifierClasses 1 }
frwkBaseFilterEntry OBJECT-TYPE
SYNTAX FrwkBaseFilterEntry
STATUS current
DESCRIPTION
"An instance of the frwkBaseFilter class."
PIB-INDEX { frwkBaseFilterPrid }
::= { frwkBaseFilterTable 1 }
FrwkBaseFilterEntry ::= SEQUENCE {
frwkBaseFilterPrid InstanceId,
frwkBaseFilterNegation TruthValue
}
frwkBaseFilterPrid OBJECT-TYPE
SYNTAX InstanceId
STATUS current
DESCRIPTION
"An integer index to uniquely identify this Filter among all
the Filters."
::= { frwkBaseFilterEntry 1 }
frwkBaseFilterNegation OBJECT-TYPE
SYNTAX TruthValue
STATUS current
DESCRIPTION
"This attribute behaves like a logical NOT for the filter.
If the packet matches this filter and the value of this
attribute is 'true', the action associated with this filter
is not applied to the packet. If the value of this
attribute is 'false', then the action is applied to the
packet."
::= { frwkBaseFilterEntry 2 }
--
-- The IP Filter Table
--
Sahita, et. al. Informational [Page 45]
RFC 3318 Framework Policy Information Base March 2003
frwkIpFilterTable OBJECT-TYPE
SYNTAX SEQUENCE OF FrwkIpFilterEntry
PIB-ACCESS install
STATUS current
DESCRIPTION
"Filter definitions. A packet has to match all fields in a
filter. Wildcards may be specified for those fields that
are not relevant."
INSTALL-ERRORS {
invalidDstL4PortData(1),
invalidSrcL4PortData(2)
}
::= { frwkClassifierClasses 2 }
frwkIpFilterEntry OBJECT-TYPE
SYNTAX FrwkIpFilterEntry
STATUS current
DESCRIPTION
"An instance of the frwkIpFilter class."
EXTENDS { frwkBaseFilterEntry }
UNIQUENESS { frwkBaseFilterNegation,
frwkIpFilterAddrType,
frwkIpFilterDstAddr,
frwkIpFilterDstPrefixLength,
frwkIpFilterSrcAddr,
frwkIpFilterSrcPrefixLength,
frwkIpFilterDscp,
frwkIpFilterFlowId,
frwkIpFilterProtocol,
frwkIpFilterDstL4PortMin,
frwkIpFilterDstL4PortMax,
frwkIpFilterSrcL4PortMin,
frwkIpFilterSrcL4PortMax }
::= { frwkIpFilterTable 1 }
FrwkIpFilterEntry ::= SEQUENCE {
frwkIpFilterAddrType InetAddressType,
frwkIpFilterDstAddr InetAddress,
frwkIpFilterDstPrefixLength InetAddressPrefixLength,
frwkIpFilterSrcAddr InetAddress,
frwkIpFilterSrcPrefixLength InetAddressPrefixLength,
frwkIpFilterDscp DscpOrAny,
frwkIpFilterFlowId Integer32,
frwkIpFilterProtocol Unsigned32,
frwkIpFilterDstL4PortMin InetPortNumber,
Sahita, et. al. Informational [Page 46]
RFC 3318 Framework Policy Information Base March 2003
frwkIpFilterDstL4PortMax InetPortNumber,
frwkIpFilterSrcL4PortMin InetPortNumber,
frwkIpFilterSrcL4PortMax InetPortNumber
}
frwkIpFilterAddrType OBJECT-TYPE
SYNTAX InetAddressType
STATUS current
DESCRIPTION
"The address type enumeration value to specify the type of
the packet's IP address.
While other types of addresses are defined in the
InetAddressType textual convention, an IP filter can only
use IPv4 and IPv6 addresses directly to classify traffic.
All other InetAddressTypes require mapping to the
corresponding Ipv4 or IPv6 address before being used to
classify traffic. Therefore, this object as such is not
limited to IPv4 and IPv6 addresses, i.e., it can be assigned
any of the valid values defined in the InetAddressType TC,
but the mapping of the address values to IPv4 or IPv6
addresses for the address attributes (frwkIpFilterDstAddr
and frwkIpFilterSrcAddr) must be done by the PEP. For
example when dns (16) is used, the PEP must resolve
the address to IPv4 or IPv6 at install time."
REFERENCE
"Textual Conventions for Internet Network Addresses.
RFC 3291."
::= { frwkIpFilterEntry 1 }
frwkIpFilterDstAddr OBJECT-TYPE
SYNTAX InetAddress
STATUS current
DESCRIPTION
"The IP address to match against the packet's
destination IP address. If the address type is 'ipv4',
'ipv6', 'ipv4z' or 'ipv6z' then, the attribute
frwkIpFilterDstPrefixLength indicates the number of bits
that are relevant. "
REFERENCE
"Textual Conventions for Internet Network Addresses.
RFC 3291."
::= { frwkIpFilterEntry 2 }
Sahita, et. al. Informational [Page 47]
RFC 3318 Framework Policy Information Base March 2003
frwkIpFilterDstPrefixLength OBJECT-TYPE
SYNTAX InetAddressPrefixLength
STATUS current
DESCRIPTION
"The length of a mask for the matching of the destination
IP address. This attribute is interpreted only if the
InetAddressType is 'ipv4', 'ipv4z', 'ipv6' or 'ipv6z'.
Masks are constructed by setting bits in sequence from the
most-significant bit downwards for
frwkIpFilterDstPrefixLength bits length. All other bits in
the mask, up to the number needed to fill the length of
the address frwkIpFilterDstAddr are cleared to zero. A zero
bit in the mask then means that the corresponding bit in
the address always matches.
In IPv4 addresses, a length of 0 indicates a match of any
address; a length of 32 indicates a match of a single host
address, and a length between 0 and 32 indicates the use of
a CIDR Prefix. IPv6 is similar, except that prefix lengths
range from 0..128."
REFERENCE
"Textual Conventions for Internet Network Addresses.
RFC 3291."
DEFVAL { 0 }
::= { frwkIpFilterEntry 3 }
frwkIpFilterSrcAddr OBJECT-TYPE
SYNTAX InetAddress
STATUS current
DESCRIPTION
"The IP address to match against the packet's source IP
address. If the address type is 'ipv4', 'ipv6', 'ipv4z' or
'ipv6z' then, the attribute frwkIpFilterSrcPrefixLength
indicates the number of bits that are relevant."
REFERENCE
"Textual Conventions for Internet Network Addresses.
RFC 3291."
::= { frwkIpFilterEntry 4 }
frwkIpFilterSrcPrefixLength OBJECT-TYPE
SYNTAX InetAddressPrefixLength
UNITS "bits"
STATUS current
DESCRIPTION
"The length of a mask for the matching of the source IP
address. This attribute is interpreted only if the
Sahita, et. al. Informational [Page 48]
RFC 3318 Framework Policy Information Base March 2003
InetAddressType is 'ipv4', 'ipv4z', 'ipv6' or 'ipv6z'.
Masks are constructed by setting bits in sequence from the
most-significant bit downwards for
frwkIpFilterSrcPrefixLength bits length. All other bits in
the mask, up to the number needed to fill the length of
the address frwkIpFilterSrcAddr are cleared to zero. A
zero bit in the mask then means that the corresponding bit
in the address always matches.
In IPv4 addresses, a length of 0 indicates a match of any
address; a length of 32 indicates a match of a single host
address, and a length between 0 and 32 indicates the use of
a CIDR Prefix. IPv6 is similar, except that prefix lengths
range from 0..128."
REFERENCE
"Textual Conventions for Internet Network Addresses.
RFC 3291."
DEFVAL { 0 }
::= { frwkIpFilterEntry 5 }
frwkIpFilterDscp OBJECT-TYPE
SYNTAX DscpOrAny
STATUS current
DESCRIPTION
"The value that the DSCP in the packet can have and
match this filter. A value of -1 indicates that a specific
DSCP value has not been defined and thus all DSCP values
are considered a match."
REFERENCE
"Management Information Base for the Differentiated Services
Architecture. RFC 3289."
DEFVAL { -1 }
::= { frwkIpFilterEntry 6 }
frwkIpFilterFlowId OBJECT-TYPE
SYNTAX Integer32 (-1 | 0..1048575)
STATUS current
DESCRIPTION
"The flow label or flow identifier in an IPv6 header
that may be used to discriminate traffic flows.
The value of -1 for this attribute MUST imply that
any flow label value in the IPv6 header will match,
resulting in the flow label field of the IPv6 header
being ignored for matching this filter entry."
::= { frwkIpFilterEntry 7 }
Sahita, et. al. Informational [Page 49]
RFC 3318 Framework Policy Information Base March 2003
frwkIpFilterProtocol OBJECT-TYPE
SYNTAX Unsigned32 (0..255)
STATUS current
DESCRIPTION
"The layer-4 protocol Id to match against the IPv4 protocol
number or the IPv6 Next-Header number in the packet. A value
of 255 means match all. Note the protocol number of 255 is
reserved by IANA, and Next-Header number of 0 is used in
IPv6."
DEFVAL { 255 }
::= { frwkIpFilterEntry 8 }
frwkIpFilterDstL4PortMin OBJECT-TYPE
SYNTAX InetPortNumber
STATUS current
DESCRIPTION
"The minimum value that the packet's layer 4 destination
port number can have and match this filter. This value must
be equal to or lesser that the value specified for this
filter in frwkIpFilterDstL4PortMax.
COPS-PR error code 'attrValueInvalid' must be returned if
the frwkIpFilterSrcL4PortMin is greater than
frwkIpFilterSrcL4PortMax"
REFERENCE
"COPS Usage for Policy Provisioning. RFC 3084, error
codes section 4.5."
DEFVAL { 0 }
::= { frwkIpFilterEntry 9 }
frwkIpFilterDstL4PortMax OBJECT-TYPE
SYNTAX InetPortNumber
STATUS current
DESCRIPTION
"The maximum value that the packet's layer 4 destination
port number can have and match this filter. This value must
be equal to or greater that the value specified for this
filter in frwkIpFilterDstL4PortMin.
COPS-PR error code 'attrValueInvalid' must be returned if
the frwkIpFilterDstL4PortMax is less than
frwkIpFilterDstL4PortMin"
REFERENCE
"COPS Usage for Policy Provisioning. RFC 3084, error
codes section 4.5."
Sahita, et. al. Informational [Page 50]
RFC 3318 Framework Policy Information Base March 2003
DEFVAL { 65535 }
::= { frwkIpFilterEntry 10 }
frwkIpFilterSrcL4PortMin OBJECT-TYPE
SYNTAX InetPortNumber
STATUS current
DESCRIPTION
"The minimum value that the packet's layer 4 source port
number can have and match this filter. This value must
be equal to or lesser that the value specified for this
filter in frwkIpFilterSrcL4PortMax.
COPS-PR error code 'attrValueInvalid' must be returned if
the frwkIpFilterSrcL4PortMin is greated than
frwkIpFilterSrcL4PortMax"
REFERENCE
"COPS Usage for Policy Provisioning. RFC 3084, error
codes section 4.5."
DEFVAL { 0 }
::= { frwkIpFilterEntry 11 }
frwkIpFilterSrcL4PortMax OBJECT-TYPE
SYNTAX InetPortNumber
STATUS current
DESCRIPTION
"The maximum value that the packet's layer 4 source port
number can have and match this filter. This value must be
equal to or greater that the value specified for this filter
in frwkIpFilterSrcL4PortMin.
COPS-PR error code 'attrValueInvalid' must be returned if
the frwkIpFilterSrcL4PortMax is less than
frwkIpFilterSrcL4PortMin"
REFERENCE
"COPS Usage for Policy Provisioning. RFC error codes
section 4.5."
DEFVAL { 65535 }
::= { frwkIpFilterEntry 12 }
--
-- The IEEE 802 Filter Table
--
frwk802FilterTable OBJECT-TYPE
SYNTAX SEQUENCE OF Frwk802FilterEntry
Sahita, et. al. Informational [Page 51]
RFC 3318 Framework Policy Information Base March 2003
PIB-ACCESS install
STATUS current
DESCRIPTION
"IEEE 802-based filter definitions. A class that contains
attributes of IEEE 802 (e.g., 802.3) traffic that form
filters that are used to perform traffic classification."
REFERENCE
"IEEE Standards for Local and Metropolitan Area Networks.
Overview and Architecture, ANSI/IEEE Std 802, 1990."
::= { frwkClassifierClasses 3 }
frwk802FilterEntry OBJECT-TYPE
SYNTAX Frwk802FilterEntry
STATUS current
DESCRIPTION
"IEEE 802-based filter definitions. An entry specifies
(potentially) several distinct matching components. Each
component is tested against the data in a frame
individually. An overall match occurs when all of the
individual components match the data they are compared
against in the frame being processed. A failure of any
one test causes the overall match to fail.
Wildcards may be specified for those fields that are not
relevant."
EXTENDS { frwkBaseFilterEntry }
UNIQUENESS { frwkBaseFilterNegation,
frwk802FilterDstAddr,
frwk802FilterDstAddrMask,
frwk802FilterSrcAddr,
frwk802FilterSrcAddrMask,
frwk802FilterVlanId,
frwk802FilterVlanTagRequired,
frwk802FilterEtherType,
frwk802FilterUserPriority }
::= { frwk802FilterTable 1 }
Frwk802FilterEntry ::= SEQUENCE {
frwk802FilterDstAddr PhysAddress,
frwk802FilterDstAddrMask PhysAddress,
frwk802FilterSrcAddr PhysAddress,
frwk802FilterSrcAddrMask PhysAddress,
frwk802FilterVlanId Integer32,
frwk802FilterVlanTagRequired INTEGER,
frwk802FilterEtherType Integer32,
frwk802FilterUserPriority BITS
Sahita, et. al. Informational [Page 52]
RFC 3318 Framework Policy Information Base March 2003
}
frwk802FilterDstAddr OBJECT-TYPE
SYNTAX PhysAddress
STATUS current
DESCRIPTION
"The 802 address against which the 802 DA of incoming
traffic streams will be compared. Frames whose 802 DA
matches the physical address specified by this object,
taking into account address wildcarding as specified by the
frwk802FilterDstAddrMask object, are potentially subject to
the processing guidelines that are associated with this
entry through the related action class."
REFERENCE
"Textual Conventions for SMIv2, RFC 2579."
::= { frwk802FilterEntry 1 }
frwk802FilterDstAddrMask OBJECT-TYPE
SYNTAX PhysAddress
STATUS current
DESCRIPTION
"This object specifies the bits in a 802 destination address
that should be considered when performing a 802 DA
comparison against the address specified in the
frwk802FilterDstAddr object.
The value of this object represents a mask that is logically
and'ed with the 802 DA in received frames to derive the
value to be compared against the frwk802FilterDstAddr
address. A zero bit in the mask thus means that the
corresponding bit in the address always matches. The
frwk802FilterDstAddr value must also be masked using this
value prior to any comparisons.
The length of this object in octets must equal the length in
octets of the frwk802FilterDstAddr. Note that a mask with no
bits set (i.e., all zeroes) effectively wildcards the
frwk802FilterDstAddr object."
::= { frwk802FilterEntry 2 }
frwk802FilterSrcAddr OBJECT-TYPE
SYNTAX PhysAddress
STATUS current
DESCRIPTION
"The 802 MAC address against which the 802 MAC SA of
incoming traffic streams will be compared. Frames whose 802
Sahita, et. al. Informational [Page 53]
RFC 3318 Framework Policy Information Base March 2003
MAC SA matches the physical address specified by this
object, taking into account address wildcarding as specified
by the frwk802FilterSrcAddrMask object, are potentially
subject to the processing guidelines that are associated
with this entry through the related action class."
::= { frwk802FilterEntry 3 }
frwk802FilterSrcAddrMask OBJECT-TYPE
SYNTAX PhysAddress
STATUS current
DESCRIPTION
"This object specifies the bits in a 802 MAC source address
that should be considered when performing a 802 MAC SA
comparison against the address specified in the
frwk802FilterSrcAddr object.
The value of this object represents a mask that is logically
and'ed with the 802 MAC SA in received frames to derive the
value to be compared against the frwk802FilterSrcAddr
address. A zero bit in the mask thus means that the
corresponding bit in the address always matches. The
frwk802FilterSrcAddr value must also be masked using this
value prior to any comparisons.
The length of this object in octets must equal the length in
octets of the frwk802FilterSrcAddr. Note that a mask with no
bits set (i.e., all zeroes) effectively wildcards the
frwk802FilterSrcAddr object."
::= { frwk802FilterEntry 4 }
frwk802FilterVlanId OBJECT-TYPE
SYNTAX Integer32 (-1 | 1..4094)
STATUS current
DESCRIPTION
"The VLAN ID (VID) that uniquely identifies a VLAN
within the device. This VLAN may be known or unknown
(i.e., traffic associated with this VID has not yet
been seen by the device) at the time this entry
is instantiated.
Setting the frwk802FilterVlanId object to -1 indicates that
VLAN data should not be considered during traffic
classification."
::= { frwk802FilterEntry 5 }
Sahita, et. al. Informational [Page 54]
RFC 3318 Framework Policy Information Base March 2003
frwk802FilterVlanTagRequired OBJECT-TYPE
SYNTAX INTEGER {
taggedOnly(1),
priorityTaggedPlus(2),
untaggedOnly(3),
ignoreTag(4)
}
STATUS current
DESCRIPTION
"This object indicates whether the presence of an
IEEE 802.1Q VLAN tag in data link layer frames must
be considered when determining if a given frame
matches this 802 filter entry.
A value of 'taggedOnly(1)' means that only frames
containing a VLAN tag with a non-Null VID (i.e., a
VID in the range 1..4094) will be considered a match.
A value of 'priorityTaggedPlus(2)' means that only
frames containing a VLAN tag, regardless of the value
of the VID, will be considered a match.
A value of 'untaggedOnly(3)' indicates that only
untagged frames will match this filter component.
The presence of a VLAN tag is not taken into
consideration in terms of a match if the value is
'ignoreTag(4)'."
::= { frwk802FilterEntry 6 }
frwk802FilterEtherType OBJECT-TYPE
SYNTAX Integer32 (-1 | 0..'ffff'h)
STATUS current
DESCRIPTION
"This object specifies the value that will be compared
against the value contained in the EtherType field of an
IEEE 802 frame. Example settings would include 'IP'
(0x0800), 'ARP' (0x0806) and 'IPX' (0x8137).
Setting the frwk802FilterEtherTypeMin object to -1 indicates
that EtherType data should not be considered during traffic
classification.
Note that the position of the EtherType field depends on
the underlying frame format. For Ethernet-II encapsulation,
the EtherType field follows the 802 MAC source address. For
802.2 LLC/SNAP encapsulation, the EtherType value follows
Sahita, et. al. Informational [Page 55]
RFC 3318 Framework Policy Information Base March 2003
the Organization Code field in the 802.2 SNAP header. The
value that is tested with regard to this filter component
therefore depends on the data link layer frame format being
used. If this 802 filter component is active when there is
no EtherType field in a frame (e.g., 802.2 LLC), a match is
implied."
::= { frwk802FilterEntry 7 }
frwk802FilterUserPriority OBJECT-TYPE
SYNTAX BITS {
matchPriority0(0),
matchPriority1(1),
matchPriority2(2),
matchPriority3(3),
matchPriority4(4),
matchPriority5(5),
matchPriority6(6),
matchPriority7(7)
}
STATUS current
DESCRIPTION
"The set of values, representing the potential range
of user priority values, against which the value contained
in the user priority field of a tagged 802.1 frame is
compared. A test for equality is performed when determining
if a match exists between the data in a data link layer
frame and the value of this 802 filter component. Multiple
values may be set at one time such that potentially several
different user priority values may match this 802 filter
component.
Setting all of the bits that are associated with this
object causes all user priority values to match this
attribute. This essentially makes any comparisons
with regard to user priority values unnecessary. Untagged
frames are treated as an implicit match."
::= { frwk802FilterEntry 8 }
--
-- The Internal label filter extension
--
frwkILabelFilterTable OBJECT-TYPE
SYNTAX SEQUENCE OF FrwkILabelFilterEntry
PIB-ACCESS install
STATUS current
Sahita, et. al. Informational [Page 56]
RFC 3318 Framework Policy Information Base March 2003
DESCRIPTION
"Internal label filter Table. This PRC is used to achieve
classification based on the internal flow label set by the
PEP possibly after ingress classification to avoid
re-classification at the egress interface on the same PEP."
::= { frwkClassifierClasses 4 }
frwkILabelFilterEntry OBJECT-TYPE
SYNTAX FrwkILabelFilterEntry
STATUS current
DESCRIPTION
"Internal label filter entry definition."
EXTENDS { frwkBaseFilterEntry }
UNIQUENESS { frwkBaseFilterNegation,
frwkILabelFilterILabel }
::= { frwkILabelFilterTable 1 }
FrwkILabelFilterEntry ::= SEQUENCE {
frwkILabelFilterILabel OCTET STRING
}
frwkILabelFilterILabel OBJECT-TYPE
SYNTAX OCTET STRING
STATUS current
DESCRIPTION
"The Label that this flow uses for differentiating traffic
flows. The flow labeling is meant for network device
internal usage. A value of zero length string matches all
internal labels."
::= { frwkILabelFilterEntry 1 }
--
-- The Marker classes group
--
frwkMarkerClasses
OBJECT IDENTIFIER ::= { frameworkPib 4 }
--
-- The 802 Marker Table
--
frwk802MarkerTable OBJECT-TYPE
SYNTAX SEQUENCE OF Frwk802MarkerEntry
PIB-ACCESS install
STATUS current
Sahita, et. al. Informational [Page 57]
RFC 3318 Framework Policy Information Base March 2003
DESCRIPTION
"The 802 Marker class. An 802 packet can be marked with the
specified VLAN id, priority level."
::= { frwkMarkerClasses 1 }
frwk802MarkerEntry OBJECT-TYPE
SYNTAX Frwk802MarkerEntry
STATUS current
DESCRIPTION
"frwk802Marker entry definition."
PIB-INDEX { frwk802MarkerPrid }
UNIQUENESS { frwk802MarkerVlanId,
frwk802MarkerPriority }
::= { frwk802MarkerTable 1 }
Frwk802MarkerEntry::= SEQUENCE {
frwk802MarkerPrid InstanceId,
frwk802MarkerVlanId Unsigned32,
frwk802MarkerPriority Unsigned32
}
frwk802MarkerPrid OBJECT-TYPE
SYNTAX InstanceId
STATUS current
DESCRIPTION
"An integer index to uniquely identify this 802 Marker."
::= { frwk802MarkerEntry 1 }
frwk802MarkerVlanId OBJECT-TYPE
SYNTAX Unsigned32 (1..4094)
STATUS current
DESCRIPTION
"The VLAN ID (VID) that uniquely identifies a VLAN within
the device."
::= { frwk802MarkerEntry 2 }
frwk802MarkerPriority OBJECT-TYPE
SYNTAX Unsigned32 (0..7)
STATUS current
DESCRIPTION
"The user priority field of a tagged 802.1 frame."
::= { frwk802MarkerEntry 3 }
Sahita, et. al. Informational [Page 58]
RFC 3318 Framework Policy Information Base March 2003
--
-- The Internal Label Marker Table
--
frwkILabelMarkerTable OBJECT-TYPE
SYNTAX SEQUENCE OF FrwkILabelMarkerEntry
PIB-ACCESS install
STATUS current
DESCRIPTION
"The Internal Label Marker class. A flow in a PEP can be
marked with an internal label using this PRC."
::= { frwkMarkerClasses 2 }
frwkILabelMarkerEntry OBJECT-TYPE
SYNTAX FrwkILabelMarkerEntry
STATUS current
DESCRIPTION
"frwkILabelkMarker entry definition."
PIB-INDEX { frwkILabelMarkerPrid }
UNIQUENESS { frwkILabelMarkerILabel }
::= { frwkILabelMarkerTable 1 }
FrwkILabelMarkerEntry::= SEQUENCE {
frwkILabelMarkerPrid InstanceId,
frwkILabelMarkerILabel OCTET STRING
}
frwkILabelMarkerPrid OBJECT-TYPE
SYNTAX InstanceId
STATUS current
DESCRIPTION
"An integer index to uniquely identify this Label Marker."
::= { frwkILabelMarkerEntry 1 }
frwkILabelMarkerILabel OBJECT-TYPE
SYNTAX OCTET STRING
STATUS current
DESCRIPTION
"This internal label is implementation specific and may be
used for other policy related functions like flow
accounting purposes and/or other data path treatments."
::= { frwkILabelMarkerEntry 2 }
Sahita, et. al. Informational [Page 59]
RFC 3318 Framework Policy Information Base March 2003
--
-- Conformance Section
--
frwkBasePibConformance
OBJECT IDENTIFIER ::= { frameworkPib 5 }
frwkBasePibCompliances
OBJECT IDENTIFIER ::= { frwkBasePibConformance 1 }
frwkBasePibGroups
OBJECT IDENTIFIER ::= { frwkBasePibConformance 2 }
frwkBasePibCompliance MODULE-COMPLIANCE
STATUS current
DESCRIPTION
"Describes the requirements for conformance to the
Framework PIB."
MODULE -- this module
MANDATORY-GROUPS { frwkPrcSupportGroup,
frwkPibIncarnationGroup,
frwkDeviceIdGroup,
frwkCompLimitsGroup,
frwkCapabilitySetGroup,
frwkRoleComboGroup,
frwkIfRoleComboGroup }
OBJECT frwkPibIncarnationLongevity
PIB-MIN-ACCESS notify
DESCRIPTION
"Install support is required if policy expiration is to
be supported."
OBJECT frwkPibIncarnationTtl
PIB-MIN-ACCESS notify
DESCRIPTION
"Install support is required if policy expiration is to
be supported."
OBJECT frwkPibIncarnationInCtxtSet
PIB-MIN-ACCESS notify
DESCRIPTION
"Install support is required if configuration contexts
and outsourcing contexts are both to be supported."
OBJECT frwkPibIncarnationFullState
Sahita, et. al. Informational [Page 60]
RFC 3318 Framework Policy Information Base March 2003
PIB-MIN-ACCESS notify
DESCRIPTION
"Install support is required if incremental updates to
request states is to be supported."
GROUP frwkReferenceGroup
DESCRIPTION
"The frwkReferenceGroup is mandatory if referencing
across PIB contexts for specific client-types is to be
supported."
GROUP frwkErrorGroup
DESCRIPTION
"The frwkErrorGroup is mandatory sending errors in
decisions is to be supported."
GROUP frwkBaseFilterGroup
DESCRIPTION
"The frwkBaseFilterGroup is mandatory if filtering
based on traffic components is to be supported."
GROUP frwkIpFilterGroup
DESCRIPTION
"The frwkIpFilterGroup is mandatory if filtering
based on IP traffic components is to be supported."
GROUP frwk802FilterGroup
DESCRIPTION
"The frwk802FilterGroup is mandatory if filtering
based on 802 traffic criteria is to be supported."
GROUP frwkILabelFilterGroup
DESCRIPTION
"The frwkILabelFilterGroup is mandatory if filtering
based on PEP internal label is to be supported."
GROUP frwk802MarkerGroup
DESCRIPTION
"The frwk802MarkerGroup is mandatory if marking a packet
with 802 traffic criteria is to be supported."
GROUP frwkILabelMarkerGroup
DESCRIPTION
"The frwkILabelMarkerGroup is mandatory if marking a
flow with internal labels is to be supported."
::= { frwkBasePibCompliances 1 }
Sahita, et. al. Informational [Page 61]
RFC 3318 Framework Policy Information Base March 2003
frwkPrcSupportGroup OBJECT-GROUP
OBJECTS {
frwkPrcSupportPrid,
frwkPrcSupportSupportedPrc,
frwkPrcSupportSupportedAttrs }
STATUS current
DESCRIPTION
"Objects from the frwkPrcSupportTable."
::= { frwkBasePibGroups 1 }
frwkPibIncarnationGroup OBJECT-GROUP
OBJECTS {
frwkPibIncarnationPrid,
frwkPibIncarnationName,
frwkPibIncarnationId,
frwkPibIncarnationLongevity,
frwkPibIncarnationTtl,
frwkPibIncarnationInCtxtSet,
frwkPibIncarnationActive,
frwkPibIncarnationFullState
}
STATUS current
DESCRIPTION
"Objects from the frwkDevicePibIncarnationTable."
::= { frwkBasePibGroups 2 }
frwkDeviceIdGroup OBJECT-GROUP
OBJECTS {
frwkDeviceIdPrid,
frwkDeviceIdDescr,
frwkDeviceIdMaxMsg,
frwkDeviceIdMaxContexts }
STATUS current
DESCRIPTION
"Objects from the frwkDeviceIdTable."
::= { frwkBasePibGroups 3 }
frwkCompLimitsGroup OBJECT-GROUP
OBJECTS {
frwkCompLimitsPrid,
frwkCompLimitsComponent,
frwkCompLimitsAttrPos,
frwkCompLimitsNegation,
frwkCompLimitsType,
frwkCompLimitsSubType,
Sahita, et. al. Informational [Page 62]
RFC 3318 Framework Policy Information Base March 2003
frwkCompLimitsGuidance }
STATUS current
DESCRIPTION
"Objects from the frwkCompLimitsTable."
::= { frwkBasePibGroups 4 }
frwkReferenceGroup OBJECT-GROUP
OBJECTS {
frwkReferencePrid,
frwkReferenceClientType,
frwkReferenceClientHandle,
frwkReferenceInstance }
STATUS current
DESCRIPTION
"Objects from the frwkReferenceTable."
::= { frwkBasePibGroups 5 }
frwkErrorGroup OBJECT-GROUP
OBJECTS {
frwkErrorPrid,
frwkErrorCode,
frwkErrorSubCode,
frwkErrorPrc,
frwkErrorInstance }
STATUS current
DESCRIPTION
"Objects from the frwkErrorTable."
::= { frwkBasePibGroups 6 }
frwkCapabilitySetGroup OBJECT-GROUP
OBJECTS {
frwkCapabilitySetPrid,
frwkCapabilitySetName,
frwkCapabilitySetCapability }
STATUS current
DESCRIPTION
"Objects from the frwkCapabilitySetTable."
::= { frwkBasePibGroups 7 }
frwkRoleComboGroup OBJECT-GROUP
OBJECTS {
frwkRoleComboPrid,
frwkRoleComboRoles,
frwkRoleComboCapSetName }
Sahita, et. al. Informational [Page 63]
RFC 3318 Framework Policy Information Base March 2003
STATUS current
DESCRIPTION
"Objects from the frwkRoleComboTable."
::= { frwkBasePibGroups 8 }
frwkIfRoleComboGroup OBJECT-GROUP
OBJECTS { frwkIfRoleComboIfIndex }
STATUS current
DESCRIPTION
"Objects from the frwkIfRoleComboTable."
::= { frwkBasePibGroups 9 }
frwkBaseFilterGroup OBJECT-GROUP
OBJECTS {
frwkBaseFilterPrid,
frwkBaseFilterNegation }
STATUS current
DESCRIPTION
"Objects from the frwkBaseFilterTable."
::= { frwkBasePibGroups 10 }
frwkIpFilterGroup OBJECT-GROUP
OBJECTS {
frwkIpFilterAddrType,
frwkIpFilterDstAddr,
frwkIpFilterDstPrefixLength,
frwkIpFilterSrcAddr,
frwkIpFilterSrcPrefixLength,
frwkIpFilterDscp,
frwkIpFilterFlowId,
frwkIpFilterProtocol,
frwkIpFilterDstL4PortMin,
frwkIpFilterDstL4PortMax,
frwkIpFilterSrcL4PortMin,
frwkIpFilterSrcL4PortMax }
STATUS current
DESCRIPTION
"Objects from the frwkIpFilterTable."
::= { frwkBasePibGroups 11 }
frwk802FilterGroup OBJECT-GROUP
OBJECTS {
frwk802FilterDstAddr,
frwk802FilterDstAddrMask,
Sahita, et. al. Informational [Page 64]
RFC 3318 Framework Policy Information Base March 2003
frwk802FilterSrcAddr,
frwk802FilterSrcAddrMask,
frwk802FilterVlanId,
frwk802FilterVlanTagRequired,
frwk802FilterEtherType,
frwk802FilterUserPriority }
STATUS current
DESCRIPTION
"Objects from the frwk802FilterTable."
::= { frwkBasePibGroups 12 }
frwkILabelFilterGroup OBJECT-GROUP
OBJECTS { frwkILabelFilterILabel }
STATUS current
DESCRIPTION
"Objects from the frwkILabelFilterTable."
::= { frwkBasePibGroups 13 }
frwk802MarkerGroup OBJECT-GROUP
OBJECTS {
frwk802MarkerPrid,
frwk802MarkerVlanId,
frwk802MarkerPriority }
STATUS current
DESCRIPTION
"Objects from the frwk802MarkerTable."
::= { frwkBasePibGroups 14 }
frwkILabelMarkerGroup OBJECT-GROUP
OBJECTS {
frwkILabelMarkerPrid,
frwkILabelMarkerILabel }
STATUS current
DESCRIPTION
"Objects from the frwkILabelMarkerTable."
::= { frwkBasePibGroups 15 }
END
Sahita, et. al. Informational [Page 65]
RFC 3318 Framework Policy Information Base March 2003
6. Security Considerations
It is clear that this PIB is used for configuration using [COPS-PR],
and anything that can be configured can be misconfigured, with a
potentially disastrous effect. At this writing, no security holes
have been identified beyond those that the COPS base protocol
security is itself intended to address. These relate primarily to
controlled access to sensitive information and the ability to
configure a device - or which might result from operator error, which
is beyond the scope of any security architecture.
There are a number of PRovisioning Classes defined in this PIB that
have a PIB-ACCESS clause of install and install-notify (read-create).
These are:
frwkPibIncarnationTable: Malicious access of this PRC can cause the
PEP to use an incorrect context of policies.
frwkReferenceTable: Malicious access of this PRC can cause the PEP to
interpret the installed policy in an incorrect manner.
frwkErrorTable: Malicious access of this PRC can cause the PEP to
incorrectly assume that the PDP could not process its messages.
FrwkCapabilitySetTable, frwkRoleComboTable and frwkIfRoleComboTable:
Malicious access of these PRCs can cause the PEP to apply policies to
the wrong interfaces.
FrwkBaseFilterTable, frwkIpFilterTable, frwk802FilterTable and
frwkILabelFilterTable: Malicious access of these PRCs can cause
unintended classification of traffic on the PEP potentially leading
to incorrect policies being applied.
frwk802MarkerTable, frwkILabelMarkerTable: Malicious access of these
PRCs can cause unintended marking of traffic on the PEP potentially
leading to incorrect policies being applied.
Such objects may be considered sensitive or vulnerable in some
network environments. The support for "Install" or "Install-Notify"
decisions sent over [COPS-PR] in a non-secure environment without
proper protection can have a negative effect on network operations.
There are a number of PRovisioning Classes in this PIB that may
contain information that may be sensitive from a business
perspective, in that they may represent a customer's service contract
or the filters that the service provider chooses to apply to a
customer's ingress or egress traffic. There are no PRCs that are
sensitive in their own right, such as passwords or monetary amounts.
It may be important to control even "Notify"(read-only) access to
Sahita, et. al. Informational [Page 66]
RFC 3318 Framework Policy Information Base March 2003
these PRCs and possibly to even encrypt the values of these PRIs when
sending them over the network via COPS-PR. The use of IPSEC between
the PDP and the PEP, as described in [COPS], provides the necessary
protection against security threats. However, even if the network
itself is secure, there is no control as to who on the secure network
is allowed to "Install/Notify" (read/change/create/delete) the PRIs
in this PIB.
It is then a customer/user responsibility to ensure that the PEP/PDP
giving access to an instance of this PIB, is properly configured to
give access to only the PRIs and principals (users) that have
legitimate rights to indeed "Install" or "Notify" (change/create/
delete) them.
7. IANA Considerations
This document describes the frameworkPib and frwkTcPib Policy
Information Base (PIB) modules for registration under the "pib"
branch registered with IANA. The IANA has assigned PIB numbers 2 and
3, respectively.
Both these PIBs use "all" in the SUBJECT-CATEGORIES clause, i.e.,
they apply to all COPS client types. No new COPS client type is to
be registered for these two PIB modules.
8. References
8.1 Normative References
[COPS] Boyle, J., Cohen, R., Durham, D., Herzog, S., Rajan,
R. and A. Sastry, "The COPS (Common Open Policy
Service) Protocol", RFC 2748, January 2000.
[COPS-PR] Chan, K., Durham, D., Gai, S., Herzog, S.,
McCloghrie, K., Reichmeyer, Seligson, J., Smith, A.
and R. Yavatkar, "COPS Usage for Policy
Provisioning", RFC 3084, March 2001.
[SPPI] McCloghrie, K., Fine, M., Seligson, J., Chan, K.,
Hahn, S., Sahita, R., Smith, A. and F. Reichmeyer,
"Structure of Policy Provisioning Information", RFC
3159, August 2001.
[SNMP-SMI] McCloghrie, K., Perkins, D., Schoenwaelder, J.,
Case, J., Rose, M. and S. Waldbusser, "Structure of
Management Information Version 2 (SMIv2)", STD 58,
RFC 2578, April 1999.
Sahita, et. al. Informational [Page 67]
RFC 3318 Framework Policy Information Base March 2003
[INETADDR] Daniele, M., Haberman, B., Routhier, S. and J.
Schoenwaelder, "Textual Conventions for Internet
Network Addresses", RFC 3291, May 2002.
[802] IEEE Standards for Local and Metropolitan Area
Networks: Overview and Architecture, ANSI/IEEE Std
802, 1990.
[SNMPFRWK] Harrington, D., Presuhn, R. and B. Wijnen, "An
Architecture for Describing Simple Network
Management Protocol (SNMP) Management Frameworks",
STD 62, RFC 3411, December 2002.
[RFC2863] McCloghrie, K. and F. Kastenholz, "The Interfaces
Group MIB", RFC 2863, June 2000.
[DS-MIB] Baker, F., Chan, K. and A. Smith, "Management
Information Base for the Differentiated Services
Architecture", RFC 3289, May 2002.
[SNMPv2TC] McCloghrie, K., Perkins, D., and J. Schoenwaelder,
"Textual Conventions for SMIv2", STD 58, RFC 2579,
April 1999.
[RFC2279] Yergeau, F. "UTF-8, a transformation format of ISO
10646", RFC 2279, January 1998.
[RFC2119] Bradner, S., "Key words to use in the RFCs", BCP 14,
RFC 2119, March 1997.
8.2 Informative References
[RAP-FRAMEWORK] Yavatkar, R and D. Pendarakis, "A Framework for
Policy-based Admission Control", RFC 2753, January
2000.
[POLTERM] Westerinen, A., Schnizlein, J., Strassner, J.,
Scherling, M., Quinn, B., Herzog, S., Huynh, A.,
Carlson, M., Perry, J. and S. Waldbusser,
"Terminology for Policy-Based Management", RFC 3198,
November 2001.
9. Acknowledgments
Early versions of this specification were also co-authored by Michael
Fine, Francis Reichmeyer, John Seligson and Andrew Smith.
Sahita, et. al. Informational [Page 68]
RFC 3318 Framework Policy Information Base March 2003
Special thanks to Carol Bell, David Durham and Bert Wijnen for their
many significant comments.
Additional useful comments have been made by Diana Rawlins, Martin
Bokaemper, Tina Iliff, Pedro Da Silva, Juergen Schoenwaelder,
Noisette Yoann and Man Li.
10. Authors' Addresses
Ravi Sahita
Intel Labs.
2111 NE 25th Avenue
Hillsboro, OR 97124 USA
Phone: +1 503 712 1554
EMail: ravi.sahita@intel.com
Scott Hahn
Intel Corp.
2111 NE 25th Avenue
Hillsboro, OR 97124 USA
Phone: +1 503 264 8231
EMail: scott.hahn@intel.com
Kwok Ho Chan
Nortel Networks, Inc.
600 Technology Park Drive
Billerica, MA 01821 USA
Phone: +1 978 288 8175
EMail: khchan@nortelnetworks.com
Keith McCloghrie
Cisco Systems, Inc.
170 West Tasman Drive
San Jose, CA 95134-1706 USA
Phone: +1 408 526 5260
EMail: kzm@cisco.com
Sahita, et. al. Informational [Page 69]
RFC 3318 Framework Policy Information Base March 2003
11. Full Copyright Statement
Copyright (C) The Internet Society (2003). All Rights Reserved.
This document and translations of it may be copied and furnished to
others, and derivative works that comment on or otherwise explain it
or assist in its implementation may be prepared, copied, published
and distributed, in whole or in part, without restriction of any
kind, provided that the above copyright notice and this paragraph are
included on all such copies and derivative works. However, this
document itself may not be modified in any way, such as by removing
the copyright notice or references to the Internet Society or other
Internet organizations, except as needed for the purpose of
developing Internet standards in which case the procedures for
copyrights defined in the Internet Standards process must be
followed, or as required to translate it into languages other than
English.
The limited permissions granted above are perpetual and will not be
revoked by the Internet Society or its successors or assigns.
This document and the information contained herein is provided on an
"AS IS" basis and THE INTERNET SOCIETY AND THE INTERNET ENGINEERING
TASK FORCE DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING
BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION
HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
Acknowledgement
Funding for the RFC Editor function is currently provided by the
Internet Society.
Sahita, et. al. Informational [Page 70]