Network Working Group R. Waterman Request for Comments: 2613 Allot Networks Inc. Category: Standards Track B. Lahaye Xylan Corp. D. Romascanu Lucent Technologies S. Waldbusser INS June 1999 Remote Network Monitoring MIB Extensions for Switched Networks Version 1.0 Status of this Memo This document specifies an Internet standards track protocol for the Internet community, and requests discussion and suggestions for improvements. Please refer to the current edition of the "Internet Official Protocol Standards" (STD 1) for the standardization state and status of this protocol. Distribution of this memo is unlimited. Copyright Notice Copyright (C) The Internet Society (1999). All Rights Reserved. Abstract This memo defines a portion of the Management Information Base (MIB) for use with network management protocols in TCP/IP-based internets. In particular, it defines objects for managing remote network monitoring devices in switched networks environments. Table of Contents 1 The Network Management Framework 2 2 Overview 3 2.1 Remote Network Management Goals 3 2.2 Switched Networks Monitoring 5 2.3 Mechanisms for Monitoring Switched Networks 5 2.3.1 DataSource Objects 6 2.3.2 Copy Port 7 2.3.3 VLAN Monitoring 7 2.4 Relationship to Other MIBs 8 2.4.1 The RMON and RMON 2 MIBs 8 2.4.2 The Interfaces Group MIB 8 2.4.3 The Entity MIB 8 2.4.4 The Bridge MIB 9 Waterman, et al. Standards Track [Page 1] RFC 2613 SMON MIB June 1999 2.5 Relationship with IEEE 802.1 Standards 9 3 SMON/RMON Groups 9 3.1 SMON ProbeCapabilities 9 3.2 smonVlanStats 10 3.3 smonPrioStats 10 3.4 dataSourceCaps 10 3.5 portCopyConfig 11 4 Control of Remote Network Monitoring Devices 12 5 Definitions 13 6 References 39 7 Intellectual Property 41 8 Security Considerations 41 9 Authors' Addresses 44 A Full Copyright Statement 44 1. The Network Management Framework The SNMP Management Framework presently consists of five major components: - An overall architecture, described in RFC 2571 [1]. - Mechanisms for describing and naming objects and events for the purpose of management. The first version of this Structure of Management Information (SMI) is called SMIv1 and described in STD 16, RFC 1155 [2], STD 16, RFC 1212 [3] and RFC 1215 [4]. The second version, called SMIv2, is described in STD 58, RFC 2578 [5], RFC 2579 [6] and RFC 2580 [7]. - Message protocols for transferring management information. The first version of the SNMP message protocol is called SNMPv1 and described in STD 15, RFC 1157 [8]. A second version of the SNMP message protocol, which is not an Internet standards track protocol, is called SNMPv2c and described in RFC 1901 [9] and RFC 1906 [10]. The third version of the message protocol is called SNMPv3 and described in RFC 1906 [10], RFC 2572 [11] and RFC 2574 [12]. - Protocol operations for accessing management information. The first set of protocol operations and associated PDU formats is described in STD 15, RFC 1157 [8]. A second set of protocol operations and associated PDU formats is described in RFC 1905 [13]. - A set of fundamental applications described in RFC 2573 [14] and the view-based access control mechanism described in RFC 2575 [15]. Waterman, et al. Standards Track [Page 2] RFC 2613 SMON MIB June 1999 Managed objects are accessed via a virtual information store, termed the Management Information Base or MIB. Objects in the MIB are defined using the mechanisms defined in the SMI. This memo specifies a MIB module that is compliant to the SMIv2. A MIB conforming to the SMIv1 can be produced through the appropriate translations. The resulting translated MIB must be semantically equivalent, except where objects or events are omitted because no information in SMIv2 will be converted into textual descriptions in SMIv1 during the translation process. However, this loss of machine readable information is not considered to change the semantics of the MIB. 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 RFC 2119 [24]. 2. Overview This document continues the architecture created in the RMON MIB [17] by providing RMON analysis for switched networks (SMON). Remote network monitoring devices, often called monitors or probes, are instruments that exist for the purpose of managing a network. Often these remote probes are stand-alone devices and devote significant internal resources for the sole purpose of managing a network. An organization may employ many of these devices, one per network segment, to manage its internet. In addition, these devices may be used for a network management service provider to access a client network, often geographically remote. The objects defined in this document are intended as an interface between an RMON agent and an RMON management application and are not intended for direct manipulation by humans. While some users may tolerate the direct display of some of these objects, few will tolerate the complexity of manually manipulating objects to accomplish row creation. These functions should be handled by the management application. 2.1 Remote Network Management Goals o Offline Operation There are sometimes conditions when a management station will not be in constant contact with its remote monitoring devices. This is sometimes by design in an attempt to lower communications costs Waterman, et al. Standards Track [Page 3] RFC 2613 SMON MIB June 1999 (especially when communicating over a WAN or dialup link), or by accident as network failures affect the communications between the management station and the probe. For this reason, this MIB allows a probe to be configured to perform diagnostics and to collect statistics continuously, even when communication with the management station may not be possible or efficient. The probe may then attempt to notify the management station when an exceptional condition occurs. Thus, even in circumstances where communication between management station and probe is not continuous, fault, performance, and configuration information may be continuously accumulated and communicated to the management station conveniently and efficiently. o Proactive Monitoring Given the resources available on the monitor, it is potentially helpful for it continuously to run diagnostics and to log network performance. The monitor is always available at the onset of any failure. It can notify the management station of the failure and can store historical statistical information about the failure. This historical information can be played back by the management station in an attempt to perform further diagnosis into the cause of the problem. o Problem Detection and Reporting The monitor can be configured to recognize conditions, most notably error conditions, and continuously to check for them. When one of these conditions occurs, the event may be logged, and management stations may be notified in a number of ways. o Value Added Data Because a remote monitoring device represents a network resource dedicated exclusively to network management functions, and because it is located directly on the monitored portion of the network, the remote network monitoring device has the opportunity to add significant value to the data it collects. For instance, by highlighting those hosts on the network that generate the most traffic or errors, the probe can give the management station precisely the information it needs to solve a class of problems. o Multiple Managers An organization may have multiple management stations for different units of the organization, for different functions (e.g. engineering and operations), and in an attempt to provide disaster Waterman, et al. Standards Track [Page 4] RFC 2613 SMON MIB June 1999 recovery. Because environments with multiple management stations are common, the remote network monitoring device has to deal with more than one management station, potentially using its resources concurrently. 2.2 Switched Networks Monitoring This document addresses issues related to applying "Remote Technology" to Switch Networks. Switches today differ from standard shared media protocols: 1) Data is not, in general, broadcast. This MAY be caused by the switch architecture or by the connection-oriented nature of the data. This means, therefore, that monitoring non-broadcast traffic needs to be considered. 2) Monitoring the multiple entry and exit points from a switching device requires a vast amount of resources - memory and CPU, and aggregation of the data in logical packets of information, determined by the application needs. 3) Switching incorporates logical segmentation such as Virtual LANs (VLANs). 4) Switching incorporates packet prioritization. 5) Data across the switch fabric can be in the form of cells. Like RMON, SMON is only concerned with the monitoring of packets. Differences such as these make monitoring difficult. The current RMON and RMON 2 standards do not provide for things that are unique to switches or switched environments. In order to overcome the limitations of the existing standards, new monitoring mechanisms have been implemented by vendors of switching equipment. All these monitoring strategies are currently proprietary in nature. This document provides the framework to include different switching strategies and allow for monitoring operations consistent with the RMON framework. This MIB is limited to monitoring and control operations aimed at providing monitoring data for RMON probes. 2.3 Mechanisms for Monitoring Switched Networks The following mechanisms are used by SMON devices, for the purpose of monitoring switched networks. Waterman, et al. Standards Track [Page 5] RFC 2613 SMON MIB June 1999 2.3.1 DataSource Objects The RMON MIB standard [17] defines data source objects which point to MIB-II interfaces, identified by instances of ifIndex objects. The SMON MIB extends this concept and allows for other types of objects to be defined as data sources for RMON and/or SMON data. Three forms of dataSources are described: ifIndex. Traditional RMON dataSources. Called 'port-based' for ifType. not equal to 'propVirtual(53)'. is the ifIndex value (see [22]). smonVlanDataSource. A dataSource of this form refers to a 'Packet-based VLAN' and is called a 'VLAN-based' dataSource. is the VLAN ID as defined by the IEEE 802.1Q standard [19]. The value is between 1 and 4094 inclusive, and it represents an 802.1Q VLAN-ID with global scope within a given bridged domain, as defined by [19]. entPhysicalEntry. A dataSource of this form refers to a physical entity within the agent and is called an 'entity-based' dataSource. is the value of the entPhysicalIndex in the entPhysicalTable (see [18]). In addition to these new dataSource types, SMON introduces a new group called dataSourceCapsTable to aid an NMS in discovering dataSource identity and attributes. The extended data source mechanism supported by the SMON MIB allows for the use of external collection points, similar to the one defined and supported by the RMON and RMON 2 MIBs, as well as internal collection points (e.g. propVirtual ifTable entry, entPhysicalEntry). The latter reflects either data sources which MAY be the result of aggregation (e.g. switch-wide) or internal channels of physical entities, which have the capability of being monitored by an SMON probe. Waterman, et al. Standards Track [Page 6] RFC 2613 SMON MIB June 1999 2.3.2 Copy Port In order to make the switching devices support RMON statistics, many vendors have implemented a port copy feature, allowing traffic to be replicated from switch port to switch port. Several levels of configuration are possible: 1) 1 source port to 1 destination port 2) N source ports to 1 destination port 3) N source ports to M destination ports The SMON standard presents a standard MIB interface which allows for the control of this function. Note that this function can apply to devices that have no other SMON or RMON functionality than copy port. The agent of such a device would support only the portCopyCaps and the portCopyConfig MIB groups, out of the whole SMON MIB. Switch vendors are encouraged to implement this subset of the SMON MIB, as it would allow for standard port copy configuration from the same NMS application that does RMON or SMON. Port copy may cause congestion problems on the SMON device. This situation is more likely occur when copying from a port of higher speed to a port of lower speed or copy from multiple port to a single port. Particular implementations MAY chose to build protection mechanisms that would prevent creation of new port copy links when the capacity of the destination port is exceeded. The MIB allows for implementations to (if supported) instrument a destination drop count on port copy to provide NMS applications a sense of the quality of data presented at the destination port. 2.3.3 VLAN Monitoring VLAN monitoring can be accomplished by using a VLAN-based dataSource and/or by configuring smonVlanIdStats and/or smonPrioStats collections. These functions allow VLAN-ID or user priority distributions per dataSource. VLAN monitoring provides a high-level view of total VLAN usages and relative non-unicast traffic usage as well as a profile of VLAN priority as defined in the 3-bit user_priority field. NOTE: priority statistics reflect what was parsed from the packet, not what priority, if any, was necessarily granted by the switch. Waterman, et al. Standards Track [Page 7] RFC 2613 SMON MIB June 1999 2.4 Relationship to Other MIBs 2.4.1 The RMON and RMON 2 MIBs The Remote Monitoring MIB (RMON) [17] provides several management functions that MAY be directly or indirectly applicable to switched networks. The port copy mechanisms defined by the SMON MIB allow for the destination ports to become a data source for any RMON statistics. However, an NMS application SHOULD check whether it is in the device capability (portCopyCap) to filter errors from a source to a destination port and whether this capability is enabled, in order to provide a correct interpretation of the copied port traffic. RMON host and matrix group statistics entries MAY be aggregated by use of the extended dataSource capability defined in SMON. RMON 2 groups are similarly extended through the use of SMON's dataSource definition. RMON also defines a simple thresholding monitoring mechanism, event- logging and event-notification for any MIB instance; SMON utilizes the alarms and events groups from RMON without modification. These groups SHOULD be implemented on SMON devices if a simple thresholding mechanism is desired. The RMON 2 usrHistory group (user-defined history collection) SHOULD be implemented by an SMON device if a history collection mechanism is desired for smonStats entries. 2.4.2 The Interfaces Group MIB The SMON MIB utilizes the propVirtual(53) ifType defined in the Interfaces Group MIB [22] to provide SMON and RMON with new dataSources such as VLANs and internal monitoring points. NMS applications SHOULD consult the SMON dataSource capabilities group (dataSourceCap) for a description of these virtual interfaces. 2.4.3 The Entity MIB The SMON MIB does not mandate Entity MIB [18] support, but allows for physical entities, as defined by this MIB to be defined as SMON data sources. For such cases, the support for the entPhysicalTable is required. Waterman, et al. Standards Track [Page 8] RFC 2613 SMON MIB June 1999 2.4.4 The Bridge MIB One of the important indicators for measuring the effectiveness of a switching device is the ratio between the number of forwarded frames and the number of dropped frames at the switch port. It is out of the scope of this MIB to provide instrumentation information relative to switching devices. However, such indication may be part of other MIB modules. For instance the Bridge MIB [23] provides such MIB objects, for the 802.1 bridges (dot1dTpPortInFrames, dot1dTpPortInDiscards) and switches managed according to the 802.1 bridge model MAY provide this information. 2.5 Relationship with IEEE 802.1 Standards The SMON MIB provides simple statistics per VLAN and priority levels. Those two categories of statistics are important to managers of switched networks. Interoperability for those features is ensured by the use of the IEEE 802.1 p/Q standards ([19], [20]) defined by the IEEE 802.1 WG. Interoperability from the SMON MIB point of view is ensured by referencing the IEEE definition of VLANs and priority levels for the SMON statistics. 3. SMON Groups 3.1 SMON ProbeCapabilities The SMON probeCapabilities BITS object covers the following four capabilities. - smonVlanStats(0) The probe supports the smonVlanStats object group. - smonPrioStats(1) The probe supports the smonPrioStats object group. - dataSource(2) The probe supports the dataSourceCaps object group. - portCopy(4) The probe supports the portCopyConfig object group. Waterman, et al. Standards Track [Page 9] RFC 2613 SMON MIB June 1999 3.2 smonVlanStats The smonVlanStats MIB group includes the control and statistics objects related to 802.1Q VLANs. Specific statistics per 802.1Q virtual LAN are supported. The group provides a high level view of total VLAN usage, and relative non-unicast traffic usage. It is an implementation-specific matter as to how the agent determines the proper default-VLAN for untagged or priority-tagged frames. 3.3 smonPrioStats The smonPrioStatsTable provides a distribution based on the user_priority field in the VLAN header. Note that this table merely reports priority as encoded in VLAN headers, not the priority (if any) given the frame for actual switching purposes. 3.4 dataSourceCaps The dataSourceCaps MIB group identifies all supported data sources on an SMON device. An NMS MAY use this table to discover the RMON and Copy Port attributes of each data source. Upon restart of the agent, the dataSourceTable, ifTable and entPhysicalTable are initialized for the available data sources. The agent MAY modify these tables as data sources become known or are removed (e.g. hot swap of interfaces, chassis cards or the discovery of VLAN usage). It is understood that dataSources representing VLANs may not always be instantiated immediately upon restart, but rather as VLAN usage is detected by the agent. The agent SHOULD attempt to create dataSource and interface entries for all dataSources as soon as possible. For each dataSourceCapsEntry representing a VLAN or entPhysicalEntry, the agent MUST create an associated ifEntry with a ifType value of associated dataSourceCapsIfIndex object. The rationale of the above derives from the fact that according to [16] and [17] an RMON dataSource MUST be associated with an ifEntry. Specifically, the dataSourceCapsTable allows for an agent to map Entity MIB physical entities (e.g., switch backplanes) and entire VLANs to ifEntries with ifType "propVirtual(53)". This ifEntry values will be used as the actual values in RMON control table dataSource objects. This allows for physical entities and VLANs to be treated as RMON data sources, and RMON functions to be applied to this type Waterman, et al. Standards Track [Page 10] RFC 2613 SMON MIB June 1999 of data sources. 3.5 portCopyConfig The portCopyConfig MIB group includes the objects defined for the control of the port copy functionality in a device. The standard does not place a limit on the mode in which this copy function may be used: Mode 1 -- 1:1 Copy Single dataSource copied to a single destination dataSource. Agent MAY limit configuration based on ifTypes, ifSpeeds, half- duplex/full-duplex, or agent resources. In this mode the single instance of the portCopyDestDropEvents object refers to dropped frames on the portCopyDest interface. Mode 2 -- N:1 Copy Multiple dataSources copied to a single destination dataSource. Agent MAY limit configuration based on ifTypes, ifSpeeds, half- duplex/full-duplex, portCopyDest over-subscription, or agent resources. In this mode all N instances of the portCopyDestDropEvents object SHOULD contain the same value, and refer to dropped frames on the portCopyDest interface. Mode 3 -- N:M Copy Multiple dataSources copied to multiple destination dataSources. Agent MAY limit configuration based on ifTypes, ifSpeeds, half- duplex/full-duplex, portCopyDest over-subscription, or agent resources. Since portCopyDestDropEvents is kept per destination port, all instances of the portCopyDestDropEvents object associated with (indexed by) a given portCopyDest SHOULD have the same value (i.e. replicated or aliased for each instance associated with a given portCopyDest). The rows do not have an OwnerString, since multiple rows MAY be part of the same portCopy operation. The agent is expected to activate or deactivate entries one at a time, based on the rowStatus for the given row. This can lead to unpredictable results in Modes 2 and 3 in applications utilizing the portCopy target traffic, if multiple PDUs are used to fully configure the operation. It is RECOMMENDED that an entire portCopy operation be configured in one SetRequest PDU if possible. Waterman, et al. Standards Track [Page 11] RFC 2613 SMON MIB June 1999 The portCopyDest object MAY NOT reference an interface associated with a packet-based VLAN (smonVlanDataSource.), but this dataSource type MAY be used as a portCopySource. 4. Control of Remote Network Monitoring Devices Due to the complex nature of the available functions in these devices, the functions often need user configuration. In many cases, the function requires parameters to be set up for a data collection operation. The operation can proceed only after these parameters are fully set up. Many functional groups in this MIB have one or more tables in which to set up control parameters, and one or more data tables in which to place the results of the operation. The control tables are typically read/write in nature, while the data tables are typically read-only. Because the parameters in the control table often describe resulting data in the data table, many of the parameters can be modified only when the control entry is not active. Thus, the method for modifying these parameters is to de-activate the entry, perform the SNMP Set operations to modify the entry, and then re-activate the entry. Deleting the control entry causes the deletion of any associated data entries, which also gives a convenient method for reclaiming the resources used by the associated data. Some objects in this MIB provide a mechanism to execute an action on the remote monitoring device. These objects MAY execute an action as a result of a change in the state of the object. For those objects in this MIB, a request to set an object to the same value as it currently holds would thus cause no action to occur. To facilitate control by multiple managers, resources have to be shared among the managers. These resources are typically the memory and computation resources that a function requires. The control mechanisms defined and used in this MIB are the same as those defined in the RMON MIB [17], for control functionality and interaction with multiple managers. Waterman, et al. Standards Track [Page 12] RFC 2613 SMON MIB June 1999 5. Definitions SMON-MIB DEFINITIONS ::= BEGIN IMPORTS MODULE-IDENTITY, OBJECT-TYPE, Counter32, Integer32, Counter64 FROM SNMPv2-SMI RowStatus, TEXTUAL-CONVENTION FROM SNMPv2-TC rmon, OwnerString FROM RMON-MIB LastCreateTime, DataSource, rmonConformance, probeConfig FROM RMON2-MIB InterfaceIndex FROM IF-MIB MODULE-COMPLIANCE, OBJECT-GROUP FROM SNMPv2-CONF; switchRMON MODULE-IDENTITY LAST-UPDATED "9812160000Z" ORGANIZATION "IETF RMON MIB Working Group" CONTACT-INFO "IETF RMONMIB WG Mailing list: rmonmib@cisco.com Rich Waterman Allot Networks Inc. Tel: +1-408-559-0253 Email: rich@allot.com Bill Lahaye Xylan Corp. Tel: +1-800-995-2612 Email: lahaye@ctron.com Dan Romascanu Lucent Technologies Tel: +972-3-645-8414 Email: dromasca@lucent.com Steven Waldbusser International Network Services (INS) Tel: +1-650-318-1251 Email: waldbusser@ins.com" DESCRIPTION "The MIB module for managing remote monitoring device implementations for Switched Networks" Waterman, et al. Standards Track [Page 13] RFC 2613 SMON MIB June 1999 -- revision history REVISION "9812160000Z" -- 16 Dec 1998 midemight DESCRIPTION "Initial Version, published as RFC 2613." ::= { rmon 22 } smonMIBObjects OBJECT IDENTIFIER ::= { switchRMON 1 } dataSourceCaps OBJECT IDENTIFIER ::= {smonMIBObjects 1} smonStats OBJECT IDENTIFIER ::= {smonMIBObjects 2} portCopyConfig OBJECT IDENTIFIER ::= {smonMIBObjects 3} smonRegistrationPoints OBJECT IDENTIFIER ::= {smonMIBObjects 4} -- Textual Conventions -- SmonDataSource ::= TEXTUAL-CONVENTION STATUS current DESCRIPTION "Identifies the source of the data that the associated function is configured to analyze. This Textual Convention extends the DataSource Textual Convention defined by RMON 2 to the following data source types: - ifIndex. DataSources of this traditional form are called 'port-based', but only if ifType. is not equal to 'propVirtual(53)'. - smonVlanDataSource. A dataSource of this form refers to a 'Packet-based VLAN' and is called a 'VLAN-based' dataSource. is the VLAN ID as defined by the IEEE 802.1Q standard [19]. The value is between 1 and 4094 inclusive, and it represents an 802.1Q VLAN-ID with global scope within a given bridged domain, as defined by [19]. - entPhysicalEntry. A dataSource of this form refers to a physical entity within the agent (e.g. entPhysicalClass = backplane(4)) and is called an 'entity-based' dataSource." SYNTAX OBJECT IDENTIFIER -- The smonCapabilities object describes SMON agent capabilities. smonCapabilities OBJECT-TYPE SYNTAX BITS { smonVlanStats(0), Waterman, et al. Standards Track [Page 14] RFC 2613 SMON MIB June 1999 smonPrioStats(1), dataSource(2), smonUnusedBit(3), portCopy(4) } MAX-ACCESS read-only STATUS current DESCRIPTION "An indication of the SMON MIB groups supported by this agent." ::= { probeConfig 15 } -- dataSourceCaps MIB group - defines SMON data source and port -- copy capabilities for devices supporting SMON. -- A NMS application will check this MIB group and retrieve -- information about the SMON capabilities of the device before -- applying SMON control operations to the device. -- dataSourceCapsTable: defines capabilities of RMON data sources dataSourceCapsTable OBJECT-TYPE SYNTAX SEQUENCE OF DataSourceCapsEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "This table describes RMON data sources and port copy capabilities. An NMS MAY use this table to discover the identity and attributes of the data sources on a given agent implementation. Similar to the probeCapabilities object, actual row-creation operations will succeed or fail based on the resources available and parameter values used in each row-creation operation. Upon restart of the RMON agent, the dataSourceTable, ifTable, and perhaps entPhysicalTable are initialized for the available dataSources. For each dataSourceCapsEntry representing a VLAN or entPhysicalEntry the agent MUST create an associated ifEntry with a ifType value of 'propVirtual(53)'. This ifEntry will be used as the actual value in RMON control table dataSource objects. The assigned ifIndex value is copied into the associated dataSourceCapsIfIndex object. It is understood that dataSources representing VLANs may not always be instantiated immediately upon restart, but rather as Waterman, et al. Standards Track [Page 15] RFC 2613 SMON MIB June 1999 VLAN usage is detected by the agent. The agent SHOULD attempt to create dataSource and interface entries for all dataSources as soon as possible." ::= { dataSourceCaps 1 } dataSourceCapsEntry OBJECT-TYPE SYNTAX DataSourceCapsEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "Entries per data source containing descriptions of data source and port copy capabilities. This table is populated by the SMON agent with one entry for each supported data source." INDEX { IMPLIED dataSourceCapsObject } ::= { dataSourceCapsTable 1 } DataSourceCapsEntry ::= SEQUENCE { dataSourceCapsObject SmonDataSource, dataSourceRmonCaps BITS, dataSourceCopyCaps BITS, dataSourceCapsIfIndex InterfaceIndex } dataSourceCapsObject OBJECT-TYPE SYNTAX SmonDataSource MAX-ACCESS not-accessible STATUS current DESCRIPTION "Defines an object that can be a SMON data source or a source or a destination for a port copy operation." ::= { dataSourceCapsEntry 1 } dataSourceRmonCaps OBJECT-TYPE SYNTAX BITS { countErrFrames(0), countAllGoodFrames(1), countAnyRmonTables(2), babyGiantsCountAsGood(3) } MAX-ACCESS read-only STATUS current DESCRIPTION Waterman, et al. Standards Track [Page 16] RFC 2613 SMON MIB June 1999 " General attributes of the specified dataSource. Note that these are static attributes, which SHOULD NOT be adjusted because of current resources or configuration. - countErrFrames(0) The agent sets this bit for the dataSource if errored frames received on this dataSource can actually be monitored by the agent The agent clears this bit if any errored frames are not visible to the RMON data collector. - countAllGoodFrames(1) The agent sets this bit for the dataSource if all good frames received on this dataSource can actually be monitored by the agent. The agent clears this bit if any good frames are not visible for RMON collection, e.g., the dataSource is a non-promiscuous interface or an internal switch interface which may not receive frames which were switched in hardware or dropped by the bridge forwarding function. - countAnyRmonTables(2) The agent sets this bit if this dataSource can actually be used in any of the implemented RMON tables, resources notwithstanding. The agent clears this bit if this dataSourceCapsEntry is present simply to identify a dataSource that may only be used as portCopySource and/or a portCopyDest, but not the source of an actual RMON data collection. - babyGiantsCountAsGood(3) The agent sets this bit if it can distinguish, for counting purposes, between true giant frames and frames that exceed Ethernet maximum frame size 1518 due to VLAN tagging ('baby giants'). Specifically, this BIT means that frames up to 1522 octets are counted as good. Agents not capable of detecting 'baby giants' will clear this bit and will view all frames less than or equal to 1518 octets as 'good frames' and all frames larger than 1518 octets as 'bad frames' for the purpose of counting in the smonVlanIdStats and smonPrioStats tables. Agents capable of detecting 'baby giants' SHALL consider them as 'good frames' for the purpose of counting in the smonVlanIdStats and smonPrioStats tables." ::= { dataSourceCapsEntry 2 } dataSourceCopyCaps OBJECT-TYPE Waterman, et al. Standards Track [Page 17] RFC 2613 SMON MIB June 1999 SYNTAX BITS { copySourcePort(0), copyDestPort(1), copySrcTxTraffic(2), copySrcRxTraffic(3), countDestDropEvents(4), copyErrFrames(5), copyUnalteredFrames(6), copyAllGoodFrames(7) } MAX-ACCESS read-only STATUS current DESCRIPTION "PortCopy function capabilities of the specified dataSource. Note that these are static capabilities, which SHOULD NOT be adjusted because of current resources or configuration. - copySourcePort(0) The agent sets this bit if this dataSource is capable of acting as a source of a portCopy operation. The agent clears this bit otherwise. - copyDestPort(1) The agent sets this bit if this dataSource is capable of acting as a destination of a portCopy operation. The agent clears this bit otherwise. - copySrcTxTraffic(2) If the copySourcePort bit is set: The agent sets this bit if this dataSource is capable of copying frames transmitted out this portCopy source. The agent clears this bit otherwise. This function is needed to support full-duplex ports. Else: this bit SHOULD be cleared. - copySrcRxTraffic(3) If the copySourcePort bit is set: The agent sets this bit if this dataSource is capable of copying frames received on this portCopy source. The agent clears this bit otherwise. This function is needed to support full-duplex ports. Else: this bit SHOULD be cleared. - countDestDropEvents(4) If the copyDestPort bit is set: The agent sets this bit if it is capable of incrementing Waterman, et al. Standards Track [Page 18] RFC 2613 SMON MIB June 1999 portCopyDestDropEvents, when this dataSource is the target of a portCopy operation and a frame destined to this dataSource is dropped (for RMON counting purposes). Else: this BIT SHOULD be cleared. - copyErrFrames(5) If the copySourcePort bit is set: The agent sets this bit if it is capable of copying all errored frames from this portCopy source-port, for errored frames received on this dataSource. Else: this BIT SHOULD be cleared. - copyUnalteredFrames(6) If the copySourcePort bit is set: The agent sets the copyUnalteredFrames bit If it is capable of copying all frames from this portCopy source-port without alteration in any way; Else: this bit SHOULD be cleared. - copyAllGoodFrames(7) If the copySourcePort bit is set: The agent sets this bit for the dataSource if all good frames received on this dataSource are normally capable of being copied by the agent. The agent clears this bit if any good frames are not visible for the RMON portCopy operation, e.g., the dataSource is a non-promiscuous interface or an internal switch interface which may not receive frames which were switched in hardware or dropped by the bridge forwarding function. Else: this bit SHOULD be cleared." ::= { dataSourceCapsEntry 3 } dataSourceCapsIfIndex OBJECT-TYPE SYNTAX InterfaceIndex MAX-ACCESS read-only STATUS current DESCRIPTION "This object contains the ifIndex value of the ifEntry associated with this smonDataSource. The agent MUST create 'propVirtual' ifEntries for each dataSourceCapsEntry of type VLAN or entPhysicalEntry." ::= { dataSourceCapsEntry 4 } Waterman, et al. Standards Track [Page 19] RFC 2613 SMON MIB June 1999 -- The SMON Statistics MIB Group -- aggregated statistics for IEEE 802.1Q VLAN environments. -- VLAN statistics can be gathered by configuring smonVlanIdStats -- and/or smonPrioStats collections. These functions allow a -- VLAN-ID or user priority distributions per dataSource, -- auto-populated by the agent in a manner similar to the RMON -- hostTable. -- Only good frames are counted in the tables described in this -- section. -- VLAN ID Stats -- smonVlanStatsControlTable allows configuration of VLAN-ID -- collections. smonVlanStatsControlTable OBJECT-TYPE SYNTAX SEQUENCE OF SmonVlanStatsControlEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "Controls the setup of VLAN statistics tables. The statistics collected represent a distribution based on the IEEE 802.1Q VLAN-ID (VID), for each good frame attributed to the data source for the collection." ::= { smonStats 1 } smonVlanStatsControlEntry OBJECT-TYPE SYNTAX SmonVlanStatsControlEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "A conceptual row in the smonVlanStatsControlTable." INDEX { smonVlanStatsControlIndex } ::= { smonVlanStatsControlTable 1 } SmonVlanStatsControlEntry ::= SEQUENCE { smonVlanStatsControlIndex Integer32, smonVlanStatsControlDataSource DataSource, smonVlanStatsControlCreateTime LastCreateTime, smonVlanStatsControlOwner OwnerString, smonVlanStatsControlStatus RowStatus } Waterman, et al. Standards Track [Page 20] RFC 2613 SMON MIB June 1999 smonVlanStatsControlIndex OBJECT-TYPE SYNTAX Integer32 (1..65535) MAX-ACCESS not-accessible STATUS current DESCRIPTION "A unique arbitrary index for this smonVlanStatsControlEntry." ::= { smonVlanStatsControlEntry 1 } smonVlanStatsControlDataSource OBJECT-TYPE SYNTAX DataSource MAX-ACCESS read-create STATUS current DESCRIPTION "The source of data for this set of VLAN statistics. This object MAY NOT be modified if the associated smonVlanStatsControlStatus object is equal to active(1)." ::= { smonVlanStatsControlEntry 2 } smonVlanStatsControlCreateTime OBJECT-TYPE SYNTAX LastCreateTime MAX-ACCESS read-only STATUS current DESCRIPTION "The value of sysUpTime when this control entry was last activated. This object allows to a management station to detect deletion and recreation cycles between polls." ::= { smonVlanStatsControlEntry 3 } smonVlanStatsControlOwner OBJECT-TYPE SYNTAX OwnerString MAX-ACCESS read-create STATUS current DESCRIPTION "Administratively assigned named of the owner of this entry. It usually defines the entity that created this entry and is therefore using the resources assigned to it, though there is no enforcement mechanism, nor assurance that rows created are ever used." ::= { smonVlanStatsControlEntry 4 } smonVlanStatsControlStatus OBJECT-TYPE SYNTAX RowStatus MAX-ACCESS read-create STATUS current DESCRIPTION "The status of this row. Waterman, et al. Standards Track [Page 21] RFC 2613 SMON MIB June 1999 An entry MAY NOT exist in the active state unless all objects in the entry have an appropriate value. If this object is not equal to active(1), all associated entries in the smonVlanIdStatsTable SHALL be deleted." ::= { smonVlanStatsControlEntry 5 } -- The VLAN Statistics Table smonVlanIdStatsTable OBJECT-TYPE SYNTAX SEQUENCE OF SmonVlanIdStatsEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "Contains the VLAN statistics data. The statistics collected represent a distribution based on the IEEE 802.1Q VLAN-ID (VID), for each good frame attributed to the data source for the collection. This function applies the same rules for attributing frames to VLAN-based collections. RMON VLAN statistics are collected after the Ingress Rules defined in section 3.13 of the VLAN Specification [20] are applied. It is possible that entries in this table will be garbage-collected, based on agent resources, and VLAN configuration. Agents are encouraged to support all 4094 index values and not garbage collect this table." ::= { smonStats 2 } smonVlanIdStatsEntry OBJECT-TYPE SYNTAX SmonVlanIdStatsEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "A conceptual row in smonVlanIdStatsTable." INDEX { smonVlanStatsControlIndex, smonVlanIdStatsId } ::= { smonVlanIdStatsTable 1 } SmonVlanIdStatsEntry ::= SEQUENCE { smonVlanIdStatsId Integer32, smonVlanIdStatsTotalPkts Counter32, smonVlanIdStatsTotalOverflowPkts Counter32, smonVlanIdStatsTotalHCPkts Counter64, smonVlanIdStatsTotalOctets Counter32, smonVlanIdStatsTotalOverflowOctets Counter32, smonVlanIdStatsTotalHCOctets Counter64, smonVlanIdStatsNUcastPkts Counter32, Waterman, et al. Standards Track [Page 22] RFC 2613 SMON MIB June 1999 smonVlanIdStatsNUcastOverflowPkts Counter32, smonVlanIdStatsNUcastHCPkts Counter64, smonVlanIdStatsNUcastOctets Counter32, smonVlanIdStatsNUcastOverflowOctets Counter32, smonVlanIdStatsNUcastHCOctets Counter64, smonVlanIdStatsCreateTime LastCreateTime } smonVlanIdStatsId OBJECT-TYPE SYNTAX Integer32 (1..4094) MAX-ACCESS not-accessible STATUS current DESCRIPTION "The unique identifier of the VLAN monitored for this specific statistics collection. Tagged packets match the VID for the range between 1 and 4094. An external RMON probe MAY detect VID=0 on an Inter Switch Link, in which case the packet belongs to a VLAN determined by the PVID of the ingress port. The VLAN to which such a packet belongs can be determined only by a RMON probe internal to the switch." REFERENCE "Draft Standard for Virtual Bridged Local Area Networks, P802.1Q/D10, chapter 3.13" ::= { smonVlanIdStatsEntry 1 } smonVlanIdStatsTotalPkts OBJECT-TYPE SYNTAX Counter32 UNITS "packets" MAX-ACCESS read-only STATUS current DESCRIPTION "The total number of packets counted on this VLAN." ::= { smonVlanIdStatsEntry 2 } smonVlanIdStatsTotalOverflowPkts OBJECT-TYPE SYNTAX Counter32 UNITS "packets" MAX-ACCESS read-only STATUS current DESCRIPTION "The number of times the associated smonVlanIdStatsTotalPkts counter has overflowed." ::= { smonVlanIdStatsEntry 3 } smonVlanIdStatsTotalHCPkts OBJECT-TYPE SYNTAX Counter64 Waterman, et al. Standards Track [Page 23] RFC 2613 SMON MIB June 1999 UNITS "packets" MAX-ACCESS read-only STATUS current DESCRIPTION "The total nu