Network Working Group C. Chung Request for Comments: 2417 Independent Consultant Obsoletes: 2366 M. Greene Category: Standards Track Independent Contractor (Editor) September 1998 Definitions of Managed Objects for Multicast over UNI 3.0/3.1 based ATM Networks 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 (1998). All Rights Reserved. IANA Note Due to a clerical error in the assignment of the snmpModules in this memo, this RFC provides the corrected number assignment for this protocol. This memo obsoletes RFC 2366. Abstract This memo defines a portion of the Management Information Base (MIB) for use with network management protocols in the Internet community. In particular, it describes managed objects for IP hosts and routers that use a Multicast Address Resolution Server (MARS) to support IP multicast over ATM, as described in 'Support for Multicast over UNI 3.0/3.1 based ATM Networks' [1]. This memo specifies a MIB module in a manner that is both compliant to the SNMPv2 SMI, and semantically identical to the peer SNMPv1 definitions. Chung & Greene Standards Track [Page 1] RFC 2417 Multicast MIB September 1998 Table of Contents 1 The SNMP Network Management Framework ........................ 2 1.1 Object Definitions ......................................... 2 2 Overview ..................................................... 3 2.1 The MARS Client Group ...................................... 4 2.2 The MARS Server Group ...................................... 4 2.3 The MARS Multicast Server Group ............................ 5 3 IP over ATM Multicast Address Resolution Server MIB Definitions ............................................... 6 4 Acknowledgments ..............................................73 5 References ...................................................74 6 Security Considerations ......................................75 7 Authors' Addresses ...........................................75 8 Full Copyright Statement .....................................76 1. The SNMP Network Management Framework The SNMP Network Management Framework presently consists of these components. They are: o the SMI, described in RFC 1902 [2] - the mechanisms used for describing and naming objects for the purpose of management. o the Textual Conventions, described in RFC 1903 [3] for SNMPv2. o the Conformance Statements, described in RFC 1904 [4] for SNMPv2. o the Simple Network Management Protocol, described in STD 15, RFC 1157 [5]. o the Protocol Operations, described in RFC 1905 [6] for SNMPv2. o the MIB-II, STD 17, RFC 1213 [7] - the core set of managed objects for the Internet suite of protocols for SNMPv2. The Framework permits new objects to be defined for the purpose of experimentation and evaluation. 1.1. Object Definitions Managed objects are accessed via a virtual information store, termed the Management Information Base or MIB. Objects in the MIB are defined using the subset of Abstract Syntax Notation One (ASN.1) defined in the SMI. In particular, each object type is named by an OBJECT IDENTIFIER, an administratively assigned name. The object Chung & Greene Standards Track [Page 2] RFC 2417 Multicast MIB September 1998 type together with an object instance serves to uniquely identify a specific instantiation of the object. For human convenience, we often use a textual string, termed the descriptor, to also refer to the object type. 2. Overview This MARS MIB is designed to define managed objects that can be used to manage the MARS clients, servers, and the multicast servers (MCS), as described in the RFC2022[1]. The MIB is supposed to be used on a system where one or more MARS clients are running, or where one or more MARS servers are running, or where one or more MARS multicast servers are running. An understanding of MARS, as defined in [1] is assumed in this MIB module definition. However, the following terms are used frequently and are included here for reference: Multicast Group A group of endpoints that communicate with each other such that packets sent from one endpoint are received by all other members of the multicast group. Multicast Address Resolution Server (MARS) A server that distributes multicast group membership information to endpoints. Client/Endpoint An ATM-attached host or router that registers with a MARS and that is a member of one or more multicast groups. An endpoint may establish ATM Virtual Channels (VCs) to the other group members or may make use of a Multicast Server. Cluster The set of clients managed by a MARS. Multicast Server (MCS) A server that sets up ATM Virtual Channels (VCs) between endpoints in a multicast group and to which the endpoints forward data traffic for transmission on their behalf. The MIB is broken down into three major groups: a MARS client group, MARS (server) group, and MARS Multicast Server (MCS) Group. Chung & Greene Standards Track [Page 3] RFC 2417 Multicast MIB September 1998 2.1. The MARS Client Group This client group defines a collection of objects required to be implemented in a MIB for the management of MARS clients. It contains the following tables: o MARS Client Table Information about a client such as its ATM address, the ATM address of its default MARS, registration status, and timers. o MARS Client Multicast Group Table A list of IP multicast address blocks associated with a MARS client. o MARS Client Backup MARS Group Table A list of backup MARS's associated with a MARS client. o MARS Client VC Table Information about VCs opened by a client. o MARS Client Statistics Table Statistics collected by a MARS client. 2.2. The MARS Server Group This MARS server group defines a collection of objects required to be implemented in a MIB for the management of MARS servers. It contains the following tables: o MARS Table Information about a MARS such as its ATM address, its status and timers. o MARS Multicast Group Table A list of IP multicast address blocks associated with a MARS. o MARS VC Table Information about VCs opened by a MARS. o MARS Registered Client Table Chung & Greene Standards Track [Page 4] RFC 2417 Multicast MIB September 1998 A list of clients registered with a MARS. o MARS Registered Multicast Server Table A list of MCSs registered with a MARS. o MARS Statistics Table Statistics collected by a MARS. o MARS Host Map Table Mappings between multicast groups and clients maintained by a MARS. o MARS Server Map Table Mappings between multicast groups and MCSs maintained by a MARS. 2.3. The MARS Multicast Server Group This MARS multicast server group defines a collection of objects required to be implemented in a MIB for the management of MARS multicast servers. It contains the following tables: This group contains the following tables: o MARS Multicast Server Table Information about a MCS, such as its ATM address, default MARS ATM address, and registration state. o MARS MCS Multicast Group Table A list of IP multicast address blocks associated with a MARS MCS. o MARS MCS Backup Mars Group Table A list of backup MARS's associated with a MARS MCS. o MARS Multicast Server VC Table Information about VCs opened by a MCS. o MARS Multicast Server Statistics Table Statistics collected by a MCS. Chung & Greene Standards Track [Page 5] RFC 2417 Multicast MIB September 1998 3. IP Over ATM Multicast Address Resolution Server MIB Definitions IPATM-IPMC-MIB DEFINITIONS ::= BEGIN IMPORTS MODULE-COMPLIANCE, NOTIFICATION-GROUP, OBJECT-GROUP FROM SNMPv2-CONF snmpModules, MODULE-IDENTITY, NOTIFICATION-TYPE, Counter32, Integer32, Unsigned32, OBJECT-TYPE, IpAddress FROM SNMPv2-SMI AtmAddr FROM ATM-TC-MIB TruthValue, RowStatus FROM SNMPv2-TC ipAdEntAddr FROM RFC1213-MIB InterfaceIndex FROM IF-MIB; marsMIB MODULE-IDENTITY LAST-UPDATED "9809010000Z" -- 01 September 1998 ORGANIZATION "Internetworking Over NBMA (ion) Working Group" CONTACT-INFO " Chris Chung (chihschung@aol.com) Independent Consultant Editor: Maria Greene Postal: Independent Contractor E-mail: maria@xedia.com " DESCRIPTION "This module defines a portion of the managed information base (MIB) for managing classical IP multicast address resolution server (MARS) and related entities as described in the RFC2022. This MIB is meant to be used in conjunction with the ATM-MIB (RFC1695), MIB-II (RFC1213), and optionally the IF-MIB (RFC1573). " REVISION "9809010000Z" -- 01 September 1998 DESCRIPTION "Published as RFC 2417. Changes/fixes: - reroot this MIB from snmpModules to mib-2 to be consistent with location of other MIBs. - obsoletes RFC2366." REVISION "9804150145Z" -- 15 April 1998 DESCRIPTION "Initial version, published as RFC 2366" ::= { mib-2 57 } --*************************************************************** Chung & Greene Standards Track [Page 6] RFC 2417 Multicast MIB September 1998 -- IP ATM MARS Client Object Definitions --*************************************************************** marsClientObjects OBJECT IDENTIFIER ::= { marsMIB 1 } marsClientTable OBJECT-TYPE SYNTAX SEQUENCE OF MarsClientEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "The objects defined in this table are used for the management of MARS clients, ATM attached endpoints." ::= { marsClientObjects 1 } marsClientEntry OBJECT-TYPE SYNTAX MarsClientEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "Each entry contains a MARS client and its associated attributes. An entry in the marsClientTable has a corresponding entry in the ipAddrTable defined in RFC1213. Association between the ipAddrTable and the marsClientTable is made through the index, ipAdEntAddr." INDEX { ipAdEntAddr, marsClientIndex } ::= { marsClientTable 1 } MarsClientEntry ::= SEQUENCE { marsClientIndex Integer32, marsClientAddr AtmAddr, marsClientDefaultMarsAddr AtmAddr, marsClientHsn Unsigned32, marsClientRegistration INTEGER, marsClientCmi INTEGER, marsClientDefaultMtu INTEGER, marsClientFailureTimer INTEGER, marsClientRetranDelayTimer INTEGER, marsClientRdmMulReqAddRetrTimer INTEGER, marsClientRdmVcRevalidateTimer INTEGER, marsClientJoinLeaveRetrInterval INTEGER, marsClientJoinLeaveRetrLimit INTEGER, marsClientRegWithMarsRdmTimer INTEGER, marsClientForceWaitTimer INTEGER, marsClientLmtToMissRedirMapTimer INTEGER, marsClientIdleTimer INTEGER, Chung & Greene Standards Track [Page 7] RFC 2417 Multicast MIB September 1998 marsClientRowStatus RowStatus } marsClientIndex OBJECT-TYPE SYNTAX Integer32(1..65535) MAX-ACCESS not-accessible STATUS current DESCRIPTION "The auxiliary variable used to identify instances of the columnar objects in the MARS MarsClientTable." ::= { marsClientEntry 1 } marsClientAddr OBJECT-TYPE SYNTAX AtmAddr MAX-ACCESS read-create STATUS current DESCRIPTION "The ATM address associated with the ATM Client." ::= { marsClientEntry 2 } marsClientDefaultMarsAddr OBJECT-TYPE SYNTAX AtmAddr MAX-ACCESS read-create STATUS current DESCRIPTION "The default MARS ATM address which is needed to setup the initial signalling path between a MARS client and its associated MARS." ::= { marsClientEntry 3 } marsClientHsn OBJECT-TYPE SYNTAX Unsigned32 MAX-ACCESS read-create STATUS current DESCRIPTION "The cluster membership own 32 bit Host Sequence Number. When a new cluster member starts up, it is initialized to zero. When the cluster member sends the MARS_JOIN to register, the HSN will be correctly set to the current cluster sequence number (CSN) when the Client receives the copy of its MARS_JOIN from the MARS. It is is used to track the MARS sequence number." ::= { marsClientEntry 4 } marsClientRegistration OBJECT-TYPE SYNTAX INTEGER { notRegistered (1), Chung & Greene Standards Track [Page 8] RFC 2417 Multicast MIB September 1998 registering (2), registered (3), reRegisteringFault (4), reRegisteringRedirMap (5) } MAX-ACCESS read-create STATUS current DESCRIPTION "An indication with regards to the registration status of this client. The registration codes of 'notRegistered (1)', 'registered (2)', and registered (3) are self-explanatory. The 'reRegisteringFault (4)' indicates the client is in the process of re-registering with a MARS due to some fault conditions. The 'reRegisteringRedMap (5)' status code shows that client is re-registering because it has received a MARS_REDIRECT_MAP message and was told to register with a different MARS from the current MARS." ::= { marsClientEntry 5 } marsClientCmi OBJECT-TYPE SYNTAX INTEGER (0..65535) MAX-ACCESS read-create STATUS current DESCRIPTION "16 bit Cluster member identifier (CMI) assigned by the MARS which uniquely identifies each endpoint attached to the cluster. The value becomes valid after the 'marsClientRegistration' is set to the value of 'registered (1)'." ::= { marsClientEntry 6 } marsClientDefaultMtu OBJECT-TYPE SYNTAX INTEGER (1..65535) MAX-ACCESS read-create STATUS current DESCRIPTION "The default maximum transmission unit (MTU) used for this cluster. Note that the actual size used for a VC between two members of the cluster may be negotiated during connection setup and may be different than this value. Default value = 9180 bytes." DEFVAL { 9180 } ::= { marsClientEntry 7 } marsClientFailureTimer OBJECT-TYPE SYNTAX INTEGER (1..2147483647) Chung & Greene Standards Track [Page 9] RFC 2417 Multicast MIB September 1998 UNITS "seconds" MAX-ACCESS read-create STATUS current DESCRIPTION "A timer used to flag the failure of last MARS_MULTI to arrive. Default value = 10 seconds (recommended)." DEFVAL { 10 } ::= { marsClientEntry 8 } marsClientRetranDelayTimer OBJECT-TYPE SYNTAX INTEGER (5..10) UNITS "seconds" MAX-ACCESS read-create STATUS current DESCRIPTION "The delay timer for sending out new MARS_REQUEST for the group after the client learned that there is no other group in the cluster. The timer must be set between 5 and 10 seconds inclusive." ::= { marsClientEntry 9 } marsClientRdmMulReqAddRetrTimer OBJECT-TYPE SYNTAX INTEGER (5..10) UNITS "seconds" MAX-ACCESS read-create STATUS current DESCRIPTION "The initial random L_MULTI_RQ/ADD retransmit timer which can be set between 5 and 10 seconds inclusive." ::= { marsClientEntry 10 } marsClientRdmVcRevalidateTimer OBJECT-TYPE SYNTAX INTEGER (1..10) UNITS "seconds" MAX-ACCESS read-create STATUS current DESCRIPTION "The random time to set VC_revalidate flag. The timer value ranges between 1 and 10 seconds inclusive." ::= { marsClientEntry 11 } marsClientJoinLeaveRetrInterval OBJECT-TYPE SYNTAX INTEGER(5..2147483647) UNITS "seconds" MAX-ACCESS read-create STATUS current DESCRIPTION Chung & Greene Standards Track [Page 10] RFC 2417 Multicast MIB September 1998 "MARS_JOIN/LEAVE retransmit interval. The minimum and recommended values are 5 and 10 seconds, respectively." DEFVAL { 10 } ::= { marsClientEntry 12 } marsClientJoinLeaveRetrLimit OBJECT-TYPE SYNTAX INTEGER (0..5) MAX-ACCESS read-create STATUS current DESCRIPTION "MARS_JOIN/LEAVE retransmit limit. The maximum value is 5." ::= { marsClientEntry 13 } marsClientRegWithMarsRdmTimer OBJECT-TYPE SYNTAX INTEGER (1..10) UNITS "seconds" MAX-ACCESS read-create STATUS current DESCRIPTION "Random time to register with MARS." ::= { marsClientEntry 14 } marsClientForceWaitTimer OBJECT-TYPE SYNTAX INTEGER (1..2147483647) UNITS "minutes" MAX-ACCESS read-create STATUS current DESCRIPTION "Force wait if MARS re-registration is looping. The minimum value is 1 minute." ::= { marsClientEntry 15 } marsClientLmtToMissRedirMapTimer OBJECT-TYPE SYNTAX INTEGER (1..4) UNITS "seconds" MAX-ACCESS read-create STATUS current DESCRIPTION "Timer limit for client to miss MARS_REDIRECT_MAPS." ::= { marsClientEntry 16 } marsClientIdleTimer OBJECT-TYPE SYNTAX INTEGER (1..2147483647) UNITS "minutes" MAX-ACCESS read-create STATUS current Chung & Greene Standards Track [Page 11] RFC 2417 Multicast MIB September 1998 DESCRIPTION "The configurable inactivity timer associated with a client. When a VC is created at this client, it gets the idle timer value from this configurable timer. The minimum suggested value is 1 minute and the recommended default value is 20 minutes." DEFVAL { 20 } ::= { marsClientEntry 17 } marsClientRowStatus OBJECT-TYPE SYNTAX RowStatus MAX-ACCESS read-create STATUS current DESCRIPTION "The object is used to create, delete or modify a row in this table. A row cannot be made 'active' until instances of all corresponding columns in the row of this table are appropriately configured and until the agent has also created a corresponding row in the marsClientStatTable. When this object has a value of 'active', the following columnar objects can not be modified: marsClientDefaultMarsAddr, marsClientHsn, marsClientRegstration, marsClientCmi, marsClientDefaultMtu while other objects in this conceptual row can be modified irrespective of the value of this object. Deletion of this row is allowed regardless of whether or not a row in any associated tables (i.e., marsClientVcTable) still exists or is in use. Once this row is deleted, it is recommended that the agent or the SNMP management station (if possible) through the set command deletes any stale rows that are associated with this row." ::= { marsClientEntry 18 } --**************************************************************** Chung & Greene Standards Track [Page 12] RFC 2417 Multicast MIB September 1998 -- IP ATM MARS Client Multicast Group Address Object Definitions --**************************************************************** marsClientMcGrpTable OBJECT-TYPE SYNTAX SEQUENCE OF MarsClientMcGrpEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "This table contains a list of IP multicast group address blocks associated with a MARS client. Entries in this table are used by the client that needs to receive or transmit packets from/to the specified range of multicast addresses. Each row can be created or deleted via configuration." ::= { marsClientObjects 2 } marsClientMcGrpEntry OBJECT-TYPE SYNTAX MarsClientMcGrpEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "Each entry represents a consecutive block of multicast group addresses." INDEX { ipAdEntAddr, marsClientIndex, marsClientMcMinGrpAddr, marsClientMcMaxGrpAddr } ::= { marsClientMcGrpTable 1 } MarsClientMcGrpEntry ::= SEQUENCE { marsClientMcMinGrpAddr IpAddress, marsClientMcMaxGrpAddr IpAddress, marsClientMcGrpRowStatus RowStatus } marsClientMcMinGrpAddr OBJECT-TYPE SYNTAX IpAddress MAX-ACCESS not-accessible STATUS current DESCRIPTION "Minimum multicast group address - the min and max multicast forms multi-group block. If the MinGrpAddr and MaxGrpAddr are the same, it indicates that this block contains a single group address." ::= { marsClientMcGrpEntry 1 } marsClientMcMaxGrpAddr OBJECT-TYPE Chung & Greene Standards Track [Page 13] RFC 2417 Multicast MIB September 1998 SYNTAX IpAddress MAX-ACCESS not-accessible STATUS current DESCRIPTION "Maximum multicast group address - the min and max multicast forms a multi-group block. If the MinGrpAddr and MaxGrpAddr are the same, it indicates that this block contains a single group address." ::= { marsClientMcGrpEntry 2 } marsClientMcGrpRowStatus OBJECT-TYPE SYNTAX RowStatus MAX-ACCESS read-create STATUS current DESCRIPTION "The object is used to create or delete a row in this table. Since other objects in this row are not-accessible 'index-objects', the value of this object has no effect on whether those objects in this conceptual row can be modified." ::= { marsClientMcGrpEntry 3 } --**************************************************************** -- IP ATM MARS Client Backup MARS Object Definitions --**************************************************************** marsClientBackupMarsTable OBJECT-TYPE SYNTAX SEQUENCE OF MarsClientBackupMarsEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "This table contains a list of backup MARS addresses that a client can connect to in case of failure for connecting to the primary server. The list of addresses is in descending order of preference. It should be noted that the backup list provided by the MARS to the client via the MARS_REDIRECT_MAP message has a higher preference than addresses that are manually configured into the client. When such a list is received from the MARS, this information should be inserted at the top of the list. Each row can be created or deleted via configuration." ::= { marsClientObjects 3 } marsClientBackupMarsEntry OBJECT-TYPE SYNTAX MarsClientBackupMarsEntry MAX-ACCESS not-accessible Chung & Greene Standards Track [Page 14] RFC 2417 Multicast MIB September 1998 STATUS current DESCRIPTION "Each entry represents an ATM address of a backup MARS." INDEX { ipAdEntAddr, marsClientIndex, marsClientBackupMarsPriority, marsClientBackupMarsAddr } ::= { marsClientBackupMarsTable 1 } MarsClientBackupMarsEntry ::= SEQUENCE { marsClientBackupMarsPriority Unsigned32, marsClientBackupMarsAddr AtmAddr, marsClientBackupMarsRowStatus RowStatus } marsClientBackupMarsPriority OBJECT-TYPE SYNTAX Unsigned32(0..65535) MAX-ACCESS not-accessible STATUS current DESCRIPTION "The priority associated with a backup MARS. A lower priority value inidcates a higher preference." ::= { marsClientBackupMarsEntry 1 } marsClientBackupMarsAddr OBJECT-TYPE SYNTAX AtmAddr MAX-ACCESS not-accessible STATUS current DESCRIPTION "The ATM address associated with a backup MARS." ::= { marsClientBackupMarsEntry 2 } marsClientBackupMarsRowStatus OBJECT-TYPE SYNTAX RowStatus MAX-ACCESS read-create STATUS current DESCRIPTION "The object is used to create or delete a row in this table. Since other objects in this row are not-accessible 'index-objects', the value of this object has no effect on whether those objects in this conceptual row can be modified." ::= { marsClientBackupMarsEntry 3 } --*************************************************************** Chung & Greene Standards Track [Page 15] RFC 2417 Multicast MIB September 1998 -- IP ATM MARS Client VC Object Definition Table --*************************************************************** marsClientVcTable OBJECT-TYPE SYNTAX SEQUENCE OF MarsClientVcEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "This table contains information about open virtual circuits (VCs) that a client has. For point to point circuit, each entry represents a single VC connection between this client ATM address to another party ATM address. In the case of point to multipoint connection where a single source address is associated with multiple destinations, several entries are used to represent the relationship. An example of point to multi-point VC represented in a table is shown below. Client VPI/VCI Grp Addr1/Addr2 Part Addr 1 0,1 g1,g2 p1 1 0,1 g1,g2 p2 1 0,1 g1,g2 p3 Note: This table assumes the IP multicast address groups (min, max) defined in each entry are always consecutive. In the case of that a client receives a JOIN/LEAVE with mars$flag.punched set, each pair of the IP groups will first be broken into several pairs of consecutive IP groups before each entry row corresponding to a pair of IP group is created." ::= { marsClientObjects 4 } marsClientVcEntry OBJECT-TYPE SYNTAX MarsClientVcEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "The objects contained in the entry are VC related attributes such as VC signalling type, control VC type, idle timer, negotiated MTU size, etc." INDEX { ipAdEntAddr, marsClientIndex, marsClientVcVpi, marsClientVcVci, marsClientVcMinGrpAddr, marsClientVcMaxGrpAddr, Chung & Greene Standards Track [Page 16] RFC 2417 Multicast MIB September 1998 marsClientVcPartyAddr } ::= { marsClientVcTable 1 } MarsClientVcEntry ::= SEQUENCE { marsClientVcVpi INTEGER, marsClientVcVci INTEGER, marsClientVcMinGrpAddr IpAddress, marsClientVcMaxGrpAddr IpAddress, marsClientVcPartyAddr AtmAddr, marsClientVcPartyAddrType INTEGER, marsClientVcType INTEGER, marsClientVcCtrlType INTEGER, marsClientVcIdleTimer INTEGER, marsClientVcRevalidate TruthValue, marsClientVcEncapsType INTEGER, marsClientVcNegotiatedMtu INTEGER, marsClientVcRowStatus RowStatus } marsClientVcVpi OBJECT-TYPE SYNTAX INTEGER (0..4095) MAX-ACCESS not-accessible STATUS current DESCRIPTION "The value of virtual path identifier (VPI). Since a VPI can be numbered 0, this sub-index can take a value of 0." ::= { marsClientVcEntry 1 } marsClientVcVci OBJECT-TYPE SYNTAX INTEGER (0..65535) MAX-ACCESS not-accessible STATUS current DESCRIPTION "The value of virtual circuit identifier (VCI). Since a VCI can be numbered 0, this sub-index can take a value of 0." ::= { marsClientVcEntry 2 } marsClientVcMinGrpAddr OBJECT-TYPE SYNTAX IpAddress MAX-ACCESS not-accessible STATUS current DESCRIPTION "Minimum IP multicast group address - the min and max multicast forms a multi-group consecutive block which is associated with a table entry. Chung & Greene Standards Track [Page 17] RFC 2417 Multicast MIB September 1998 if the MinGrpAddr and MaxGrpAddr are the same, it indicates that the size of multi-group block is 1, a single IP group." ::= { marsClientVcEntry 3 } marsClientVcMaxGrpAddr OBJECT-TYPE SYNTAX IpAddress MAX-ACCESS not-accessible STATUS current DESCRIPTION "Maximum IP multicast group address - the min and max multicast forms a multi-group consecutive block which is associated with a table entry. if the MinGrpAddr and MaxGrpAddr are the same, it indicates that the size of multi-group block is 1, a single IP group." ::= { marsClientVcEntry 4 } marsClientVcPartyAddr OBJECT-TYPE SYNTAX AtmAddr MAX-ACCESS not-accessible STATUS current DESCRIPTION "An ATM party address in which this VC is linked. The party type is identified by the marsClientVcPartyAddrType." ::= { marsClientVcEntry 5 } marsClientVcPartyAddrType OBJECT-TYPE SYNTAX INTEGER { called (1), calling (2) } MAX-ACCESS read-create STATUS current DESCRIPTION "The party type is associated with the party address. The 'called (1)' indicates that the party address is a destination address which implies that VC is originated from this client. The 'calling (2)' indicates the VC was initiated externally to this client. In this case, the party address is the source address." ::= { marsClientVcEntry 6 } marsClientVcType OBJECT-TYPE Chung & Greene Standards Track [Page 18] RFC 2417 Multicast MIB September 1998 SYNTAX INTEGER { pvc (1), svc (2) } MAX-ACCESS read-create STATUS current DESCRIPTION "Circuit Connection type: permanent virtual circuit or switched virtual circuit." ::= { marsClientVcEntry 7 } marsClientVcCtrlType OBJECT-TYPE SYNTAX INTEGER { pointToPointVC (1), clusterControlVC (2), pointToMultiPointVC (3) } MAX-ACCESS read-create STATUS current DESCRIPTION "Control VC type used to specify a particular connection. pointToPointVC (1): used by the ATM Clients for the registration and queries. This VC or the initial signalling path is set up from the source Client to a MARS. It is bi-directional. clusterControlVC (2): used by a MARS to issue asynchronous updates to an ATM Client. This VC is established from the MARS to the ATM Client. pointToMultiPointVC (3): used by the client to transfer multicast data packets from layer 3. This VC is established from the source ATM Client to a destination ATM endpoint which can be a multicast group member or an MCS. The destination endpoint was obtained from the MARS." ::= { marsClientVcEntry 8 } marsClientVcIdleTimer OBJECT-TYPE SYNTAX INTEGER (1..2147483647) UNITS "minutes" MAX-ACCESS read-create STATUS current DESCRIPTION "The idle timer associated with this VC. The minimum suggested value is 1 minute and the recommended default value is 20 minutes." Chung & Greene Standards Track [Page 19] RFC 2417 Multicast MIB September 1998 DEFVAL { 20 } ::= { marsClientVcEntry 9 } marsClientVcRevalidate OBJECT-TYPE SYNTAX TruthValue MAX-ACCESS read-create STATUS current DESCRIPTION "A flag associated with an open and active multipoint VC. It is checked every time a packet is queued for transmission on that VC. The object has the value of true (1) if revalidate is required and the value false (2) otherwise." ::= { marsClientVcEntry 10 } marsClientVcEncapsType OBJECT-TYPE SYNTAX INTEGER { other (1), llcSnap (2) } MAX-ACCESS read-create STATUS current DESCRIPTION "The encapsulation type used when communicating over this VC." ::= { marsClientVcEntry 11 } marsClientVcNegotiatedMtu OBJECT-TYPE SYNTAX INTEGER (1..65535) MAX-ACCESS read-create STATUS current DESCRIPTION "The negotiated MTU when communicating over this VC." ::= { marsClientVcEntry 12 } marsClientVcRowStatus OBJECT-TYPE SYNTAX RowStatus MAX-ACCESS read-create STATUS current DESCRIPTION "The object is used to create, delete or modify a row in this table. A row cannot be made 'active' until instances of all corresponding columns in the row of this table are appropriately configured. While objects: marsClientVcIdleTimer and Chung & Greene Standards Track [Page 20] RFC 2417 Multicast MIB September 1998 marsClientVcRevalidate in this conceptual row can be modified irrespective of the value of this object, all other objects in the row can not be modified when this object has a value of 'active'. It is possible for an SNMP management station to set the row to 'notInService' and modify the entry and then set it back to 'active' with the following exception. That is, rows for which the corresponding instance of marsClientVcType has a value of 'svc' can not be modified or deleted." ::= { marsClientVcEntry 13 } --*************************************************************** -- IP ATM MARS Client Statistic Object Definition Table --*************************************************************** marsClientStatTable OBJECT-TYPE SYNTAX SEQUENCE OF MarsClientStatEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "The table contains statistics collected at MARS clients." ::= { marsClientObjects 5 } marsClientStatEntry OBJECT-TYPE SYNTAX MarsClientStatEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "Each entry contains statistics collected at one MARS client." INDEX { ipAdEntAddr, marsClientIndex } ::= { marsClientStatTable 1 } MarsClientStatEntry ::= SEQUENCE { marsClientStatTxReqMsgs Counter32, marsClientStatTxJoinMsgs Counter32, marsClientStatTxLeaveMsgs Counter32, marsClientStatTxGrpLstReqMsgs Counter32, marsClientStatRxJoinMsgs Counter32, marsClientStatRxLeaveMsgs Counter32, marsClientStatRxMultiMsgs Counter32, Chung & Greene Standards Track [Page 21] RFC 2417 Multicast MIB September 1998 marsClientStatRxNakMsgs Counter32, marsClientStatRxMigrateMsgs Counter32, marsClientStatRxGrpLstRplyMsgs Counter32, marsClientStatFailMultiMsgs Counter32 } marsClientStatTxReqMsgs OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "Total number of MARS_REQUEST messages transmitted from a client." ::= { marsClientStatEntry 1 } marsClientStatTxJoinMsgs OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "Total number of MARS_JOIN messages transmitted from a client." ::= { marsClientStatEntry 2 } marsClientStatTxLeaveMsgs OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "Total number of MARS_LEAVE messages transmitted from a client." ::= { marsClientStatEntry 3 } marsClientStatTxGrpLstReqMsgs OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "Total number of MARS_GROUPLIST_REQUEST messages transmitted from a client." ::= { marsClientStatEntry 4 } marsClientStatRxJoinMsgs OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "Total number of MARS_JOIN messages received by Chung & Greene Standards Track [Page 22] RFC 2417 Multicast MIB September 1998 a client." ::= { marsClientStatEntry 5 } marsClientStatRxLeaveMsgs OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "Total number of MARS_LEAVE messages received by a client." ::= { marsClientStatEntry 6 } marsClientStatRxMultiMsgs OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "Total number of MARS_MULTI messages received by a client." ::= { marsClientStatEntry 7 } marsClientStatRxNakMsgs OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "Total number of MARS_NAK messages received by a client." ::= { marsClientStatEntry 8 } marsClientStatRxMigrateMsgs OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "Total number of MARS_MIGRATE messages received by a client." ::= { marsClientStatEntry 9 } marsClientStatRxGrpLstRplyMsgs OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "Total number of MARS_GROUPLIST_REPLY messages received by a client." ::= { marsClientStatEntry 10 } Chung & Greene Standards Track [Page 23] RFC 2417 Multicast MIB September 1998 marsClientStatFailMultiMsgs OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "Total number of timeouts occurred indicating failure of the last MARS_MULTI to arrive." ::= { marsClientStatEntry 11 } --*************************************************************** -- IP ATM MARS Object Definitions --*************************************************************** marsObjects OBJECT IDENTIFIER ::= { marsMIB 2 } marsTable OBJECT-TYPE SYNTAX SEQUENCE OF MarsEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "The objects defined in this table are used for the management of MARS servers." ::= { marsObjects 1 } marsEntry OBJECT-TYPE SYNTAX MarsEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "Each entry contains a MARS and its associated attributes." INDEX { marsIndex, marsIfIndex } ::= { marsTable 1 } MarsEntry ::= SEQUENCE { marsIndex Integer32, marsIfIndex InterfaceIndex, marsAddr AtmAddr, marsLocal TruthValue, marsServStatus INTEGER, marsServType INTEGER, marsServPriority Unsigned32, marsRedirMapMsgTimer INTEGER, marsCsn Unsigned32, marsSsn Unsigned32, marsRowStatus RowStatus } Chung & Greene Standards Track [Page 24] RFC 2417 Multicast MIB September 1998 marsIndex OBJECT-TYPE SYNTAX Integer32(1..65535) MAX-ACCESS not-accessible STATUS current DESCRIPTION "The auxiliary variable used to identify instances of the columnar objects in the MARS table." ::= { marsEntry 1 } marsIfIndex OBJECT-TYPE SYNTAX InterfaceIndex MAX-ACCESS not-accessible STATUS current DESCRIPTION "The ifIndex of the interface that the MARS is associated with." ::= { marsEntry 2 } marsAddr OBJECT-TYPE SYNTAX AtmAddr MAX-ACCESS read-create STATUS current DESCRIPTION "The ATM address associated with the MARS." ::= { marsEntry 3 } marsLocal OBJECT-TYPE SYNTAX TruthValue MAX-ACCESS read-create STATUS current DESCRIPTION "A flag associated with a MARS entry. The object has the value of true (1) if the MARS whose interface is local to the machine that implements this MIB; otherwise the object has the value of false (2)." ::= { marsEntry 4 } marsServStatus OBJECT-TYPE SYNTAX INTEGER { active (1), inactive (2), faulted (3) } MAX-ACCESS read-create STATUS current DESCRIPTION "The current status of MARS." ::= { marsEntry 5 } Chung & Greene Standards Track [Page 25] RFC 2417 Multicast MIB September 1998 marsServType OBJECT-TYPE SYNTAX INTEGER { primary (1), backup (2) } MAX-ACCESS read-create STATUS current DESCRIPTION "Types of MARS servers: primary or backup." ::= { marsEntry 6 } marsServPriority OBJECT-TYPE SYNTAX Unsigned32(0..65535) MAX-ACCESS read-create STATUS current DESCRIPTION "Priority associated with a backup MARS server. A backup MARS server with lower priority value indicates a higher preference than other backup MARS servers to be used as the MARS server when the primary server fails." ::= { marsEntry 7 } marsRedirMapMsgTimer OBJECT-TYPE SYNTAX INTEGER (1..2) UNITS "minutes" MAX-ACCESS read-create STATUS current DESCRIPTION "Periodic interval on which a multi-part MARS_REDIRECT_MAP is sent from this MARS." DEFVAL { 1 } ::= { marsEntry 8 } marsCsn OBJECT-TYPE SYNTAX Unsigned32 MAX-ACCESS read-create STATUS current DESCRIPTION "Current cluster sequence number (CSN) which is global within the context of a given protocol. The CSN is incremented by the MARS on every transmission of a message on ClusterControlVC. A cluster member uses the CSN to track the message loss on ClusterControlVC or to monitor a membership change." ::= { marsEntry 9 } marsSsn OBJECT-TYPE Chung & Greene Standards Track [Page 26] RFC 2417 Multicast MIB September 1998 SYNTAX Unsigned32 MAX-ACCESS read-create STATUS current DESCRIPTION "Current server sequence number (SSN) which is global within the context of a given protocol. The SSN is incremented by the MARS on every transmission of a message on ServerControlVC. A MCS uses the SSN to track the message loss on ServerControlVC or to monitor a membership change." ::= { marsEntry 10 } marsRowStatus OBJECT-TYPE SYNTAX RowStatus MAX-ACCESS read-create STATUS current DESCRIPTION "The object is used to create, delete or modify a row in this table. A row cannot be made 'active' until instances of all corresponding columns in the row of this table are appropriately configured and until the agent has also created a corresponding row in the marsStatTable. When this object has a value of 'active', the following columnar objects can not be modified: marsAddr, marsAddrLocal, marsServStatus, marsServType, marsCsn, marsSsn while other objects in this conceptual row can be modified irrespective of the value of this object. Deletion of this row is allowed regardless of whether or not a row in any associated tables (i.e., marsVcTable) still exists or is in use. Once this row is deleted, it is recommended that the agent or the SNMP management station (if possible) through the set command deletes any stale rows that are associated with this row." ::= { marsEntry 11 } Chung & Greene Standards Track [Page 27] RFC 2417 Multicast MIB September 1998 --**************************************************************** -- IP ATM MARS Multicast Group Address Object Definitions --**************************************************************** marsMcGrpTable OBJECT-TYPE SYNTAX SEQUENCE OF MarsMcGrpEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "This table contains a list of IP multicast address blocks associated with a MARS. Entries in this table are used by the MARS host map table and the server map table. They should be created prior to being referenced as indices by those tables. Each row can be created or deleted via configuration." ::= { marsObjects 2 } marsMcGrpEntry OBJECT-TYPE SYNTAX MarsMcGrpEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "Each entry represents a consecutive block of multicast group addresses." INDEX { marsIndex, marsIfIndex, marsMcMinGrpAddr, marsMcMaxGrpAddr } ::= { marsMcGrpTable 1 } MarsMcGrpEntry ::= SEQUENCE { marsMcMinGrpAddr IpAddress, marsMcMaxGrpAddr IpAddress, marsMcGrpAddrUsage INTEGER, marsMcGrpRxLayer3GrpSets Counter32, marsMcGrpRxLayer3GrpResets Counter32, marsMcGrpRowStatus RowStatus } marsMcMinGrpAddr OBJECT-TYPE SYNTAX IpAddress MAX-ACCESS not-accessible STATUS current DESCRIPTION "Minimum multicast group address - the min and max multicast forms multi-group block. If the MinGrpAddr and MaxGrpAddr are the same, it indicates that this Chung & Greene Standards Track [Page 28] RFC 2417 Multicast MIB September 1998 block contains a single group address." ::= { marsMcGrpEntry 1 } marsMcMaxGrpAddr OBJECT-TYPE SYNTAX IpAddress MAX-ACCESS not-accessible STATUS current DESCRIPTION "Maximum multicast group address - the min and max multicast forms a multi-group block. If The MinGrpAddr and MaxGrpAddr are the same, it indicates that this block contains a single group address." ::= { marsMcGrpEntry 2 } marsMcGrpAddrUsage OBJECT-TYPE SYNTAX INTEGER { hostMap (1), serverMap (2), hostServerMap (3) } MAX-ACCESS read-create STATUS current DESCRIPTION "Usage of the multicast address block. The hostMap (1) indicates that the address block is only used in the MARS host map table. The serverMap (2) indicates that the address block is only used in the MARS server map table. The hostServerMap (3) indicates that the address block is used in both the host map and the server map tables." ::= { marsMcGrpEntry 3 } marsMcGrpRxLayer3GrpSets OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "Number of MARS_JOIN messages received with mars$flags.layer3grp flag set." ::= { marsMcGrpEntry 4 } marsMcGrpRxLayer3GrpResets OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "Number of MARS_JOIN messages received with mars$flags.layer3grp flag reset." Chung & Greene Standards Track [Page 29] RFC 2417 Multicast MIB September 1998 ::= { marsMcGrpEntry 5 } marsMcGrpRowStatus OBJECT-TYPE SYNTAX RowStatus MAX-ACCESS read-create STATUS current DESCRIPTION "The object is used to create, delete or modify a row in this table. The value of this object has no effect on whether other objects in this conceptual row can be modified." ::= { marsMcGrpEntry 6 } --*************************************************************** -- IP ATM MARS Host Map Object Definitions --*************************************************************** marsHostMapTable OBJECT-TYPE SYNTAX SEQUENCE OF MarsHostMapEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "This table caches mappings between IP multicast address to a list of ATM addresses that are configured or dynamically learned from the MARS. This address resolution is used for the host map. It supports the mapping of a block of multicast group addresses to a cluster member address. In the case where a group block is associated with multiple cluster members, several entries are used to representing the relationship." ::= { marsObjects 3 } marsHostMapEntry OBJECT-TYPE SYNTAX MarsHostMapEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "Each entry row contains attributes associated with the mapping between a multicast group block and an ATM address." INDEX { marsIndex, marsIfIndex, marsMcMinGrpAddr, marsMcMaxGrpAddr, marsHostMapAtmAddr } ::= { marsHostMapTable 1 } Chung & Greene Standards Track [Page 30] RFC 2417 Multicast MIB September 1998 MarsHostMapEntry ::= SEQUENCE { marsHostMapAtmAddr AtmAddr, marsHostMapRowType INTEGER, marsHostMapRowStatus RowStatus } marsHostMapAtmAddr OBJECT-TYPE SYNTAX AtmAddr MAX-ACCESS not-accessible STATUS current DESCRIPTION "The mapped cluster member ATM address." ::= { marsHostMapEntry 1 } marsHostMapRowType OBJECT-TYPE SYNTAX INTEGER { static (1), dynamic (2) } MAX-ACCESS read-create STATUS current DESCRIPTION "Method in which this entry row is created. The static (1) indicates that this row is created through configuration. The dynamic (2) indicates that the row is created as the result of group address updates received at this MARS." ::= { marsHostMapEntry 2 } marsHostMapRowStatus OBJECT-TYPE SYNTAX RowStatus MAX-ACCESS read-create STATUS current DESCRIPTION "The object is used to create, delete or modify a row in this table. This object must not be set to 'active' until instances of all corresponding columns in the row of this table are appropriately configured. It is possible for an SNMP management station to set the row to 'notInService' and modify the entry and then set it back to 'active' with the following exception. That is, rows for which the corresponding instance of marsHostMapRowType has a value of 'dynamic' Chung & Greene Standards Track [Page 31] RFC 2417 Multicast MIB September 1998 can not be modified or deleted." ::= { marsHostMapEntry 3 } --*************************************************************** -- IP ATM MARS Server Map Object Definitions --*************************************************************** marsServerMapTable OBJECT-TYPE SYNTAX SEQUENCE OF MarsServerMapEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "This table caches mappings between IP multicast address to a list of MCS ATM addresses that are configured or dynamically learned from the MARS. This address resolution is used for the server map. It supports the mapping of a block of multicast group addresses to a MCS address. In the case where a group block is associated with multiple MCSs, several entries are used to representing the relationship." ::= { marsObjects 4 } marsServerMapEntry OBJECT-TYPE SYNTAX MarsServerMapEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "Each entry row contains attributes associated with the mapping between a multicast group block and an MCS address." INDEX { marsIndex, marsIfIndex, marsMcMinGrpAddr, marsMcMaxGrpAddr, marsServerMapAtmAddr } ::= { marsServerMapTable 1 } MarsServerMapEntry ::= SEQUENCE { marsServerMapAtmAddr AtmAddr, marsServerMapRowType INTEGER, marsServerMapRowStatus RowStatus } marsServerMapAtmAddr OBJECT-TYPE SYNTAX AtmAddr MAX-ACCESS not-accessible Chung & Greene Standards Track [Page 32] RFC 2417 Multicast MIB September 1998 STATUS current DESCRIPTION "The mapped MCS ATM address." ::= { marsServerMapEntry 1 } marsServerMapRowType OBJECT-TYPE SYNTAX INTEGER { static (1), dynamic (2) } MAX-ACCESS read-create STATUS current DESCRIPTION "Method in which this entry row is created. The 'static (1)' indicates that this row is created through configuration. The 'dynamic (2)' indicates that the row is created as the result of group address updates received at this MARS." ::= { marsServerMapEntry 2 } marsServerMapRowStatus OBJECT-TYPE SYNTAX RowStatus MAX-ACCESS read-create STATUS current DESCRIPTION "The object is used to create, delete or modify a row in this table. This object must not be set to 'active' until instances of all corresponding columns in the row of this table are appropriately configured. It is possible for an SNMP management station to set the row to 'notInService' and modify the entry and then set it back to 'active' with the following exception. That is, rows for which the corresponding instance of marsServerMapRowType has a value of 'dynamic' can not be modified or deleted." ::= { marsServerMapEntry 3 } --*************************************************************** -- IP ATM MARS VC Object Definition Table --*************************************************************** marsVcTable OBJECT-TYPE SYNTAX SEQUENCE OF MarsVcEntry MAX-ACCESS not-accessible Chung & Greene Standards Track [Page 33] RFC 2417 Multicast MIB September 1998 STATUS current DESCRIPTION "This table contains information about open virtual circuits (VCs) that a MARS has. For point to point circuit, each entry represents a single VC connection between this MARS ATM address to another party's ATM address. In the case of point to multipoint connection where a ControlVc is attached with multiple leaf nodes, several entries are used to represent the relationship. An example of point to multi-point VC represented in a table is shown below. MARS VPI/VCI MARS Addr Party Addr 1 0,1 m1 p1 1 0,1 m1 p2 1 0,1 m1 p3" ::= { marsObjects 5 } marsVcEntry OBJECT-TYPE SYNTAX MarsVcEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "The objects contained in the entry are VC related attributes such as VC signalling type, control VC type, idle timer, negotiated MTU size, etc." INDEX { marsIndex, marsIfIndex, marsVcVpi, marsVcVci, marsVcPartyAddr } ::= { marsVcTable 1 } MarsVcEntry ::= SEQUENCE { marsVcVpi INTEGER, marsVcVci INTEGER, marsVcPartyAddr AtmAddr, marsVcPartyAddrType INTEGER, marsVcType INTEGER, marsVcCtrlType INTEGER, marsVcIdleTimer INTEGER, marsVcCmi INTEGER, marsVcEncapsType INTEGER, marsVcNegotiatedMtu INTEGER, marsVcRowStatus RowStatus } marsVcVpi OBJECT-TYPE Chung & Greene Standards Track [Page 34] RFC 2417 Multicast MIB September 1998 SYNTAX INTEGER (0..4095) MAX-ACCESS not-accessible STATUS current DESCRIPTION "The value of virtual path identifier (VPI). Since a VPI can be numbered 0, this sub-index can take a value of 0." ::= { marsVcEntry 1 } marsVcVci OBJECT-TYPE SYNTAX INTEGER (0..65535) MAX-ACCESS not-accessible STATUS current DESCRIPTION "The value of virtual circuit identifier (VCI). Since a VCI can be numbered 0, this sub-index can take a value of 0." ::= { marsVcEntry 2 } marsVcPartyAddr OBJECT-TYPE SYNTAX AtmAddr MAX-ACCESS not-accessible STATUS current DESCRIPTION "An ATM party address in which this VC is linked. The party type is identified by the marsVcPartyAddrType." ::= { marsVcEntry 5 } marsVcPartyAddrType OBJECT-TYPE SYNTAX INTEGER { called (1), calling (2) } MAX-ACCESS read-create STATUS current DESCRIPTION "The party type is associated with the party address. The 'called (1)' indicates that the party address is a destination address which implies that VC is originated from this MARS. The 'calling (2)' indicates the VC was initiated externally to this MARS. The party address is the source address." ::= { marsVcEntry 6 } marsVcType OBJECT-TYPE SYNTAX INTEGER { pvc (1), svc (2) Chung & Greene Standards Track [Page 35] RFC 2417 Multicast MIB Se