CISCO-SWITCH-CGMP-MIB device MIB details by Cisco

CISCO-SWITCH-CGMP-MIB file content

The SNMP protocol is used to for conveying information and commands between agents and managing entities. SNMP uses the User Datagram Protocol (UDP) as the transport protocol for passing data between managers and agents. The reasons for using UDP for SNMP are, firstly it has low overheads in comparison to TCP, which uses a 3-way hand shake for connection. Secondly, in congested networks, SNMP over TCP is a bad idea because TCP in order to maintain reliability will flood the network with retransmissions.

Management information (MIB) is represented as a collection of managed objects. These objects together form a virtual information base called MIB. An agent may implement many MIBs, but all agents must implement a particular MIB called MIB-II [16]. This standard defines variables for things such as interface statistics (interface speeds, MTU, octets sent, octets received, etc.) as well as various other things pertaining to the system itself (system location, system contact, etc.). The main goal of MIB-II is to provide general TCP/IP management information.

Use ActiveXperts Network Monitor 2024 to import vendor-specific MIB files, inclusing CISCO-SWITCH-CGMP-MIB.

Vendor:	Cisco
Mib:	CISCO-SWITCH-CGMP-MIB  [download]  [view objects]
Tool:	ActiveXperts Network Monitor 2024 [download]    (ships with advanced SNMP/MIB tools)

-- *****************************************************************
-- MIBS/CISCO-SWITCH-CGMP-MIB.my:  Switch-side CGMP MIB
--
-- May, 1998, Rich Heaton
--
-- Copyright (c) 1998 by cisco Systems, Inc.
-- All rights reserved.
-- *****************************************************************
--

CISCO-SWITCH-CGMP-MIB DEFINITIONS ::= BEGIN

IMPORTS
        TEXTUAL-CONVENTION,
        RowStatus,
        MacAddress                      
            FROM SNMPv2-TC
        MODULE-IDENTITY,
        OBJECT-TYPE                      
            FROM SNMPv2-SMI        
        dot1dBasePort
            FROM BRIDGE-MIB
        ciscoMgmt                        
            FROM CISCO-SMI
        MODULE-COMPLIANCE, OBJECT-GROUP  
            FROM SNMPv2-CONF;

ciscoSwitchCgmpMIB MODULE-IDENTITY
        LAST-UPDATED    "9805070000Z"
        ORGANIZATION    "Cisco Systems, Inc"
        CONTACT-INFO
                "       Cisco Systems
                        Customer Service

                Postal: 170 W Tasman Drive
                        San Jose, CA 95134
                        USA

                        Tel: +1 800 553-NETS

                Email: cs-ipmulticast@cisco.com"
        DESCRIPTION
                "Switch-side Cisco Group Management Protocol MIB for  
                 Layer 2 Switch devices."
        REVISION        "9805070000Z"
        DESCRIPTION
                "Initial version of this MIB module"
        ::= { ciscoMgmt 101 }

ciscoSwitchCgmpMIBObjects OBJECT IDENTIFIER ::= { ciscoSwitchCgmpMIB 1 }

sCgmpInfo OBJECT IDENTIFIER ::= { ciscoSwitchCgmpMIBObjects 1 }

-- Textual Conventions

SCgmpVlanIndex ::= TEXTUAL-CONVENTION
    STATUS       current
    DESCRIPTION
            "The VLAN-id of a VLAN on either ISL trunk, 802.1q trunk
             or port-based VLAN implementations."
    SYNTAX     INTEGER (0..1023)


-- Switch CGMP Info

--
-- Switch side Cisco Group Management Protocol (CGMP) objects
--
-- CGMP provides a mechanism for Layer2-only switches to populate 
-- destination port lists for multicast groups. Multicast routers
-- will relay Internet Group Managment Protocol (IGMP) messages
-- to switches using CGMP. This allows switches to constrain multicast
-- traffic to only those ports that have indicated their membership 
-- in a given group.
--

sCgmpEnable OBJECT-TYPE
        SYNTAX  INTEGER {
                        enabled(1),     -- enable  CGMP
                        disabled(2)     -- disable CGMP
                        }
        MAX-ACCESS  read-write
        STATUS  current
        DESCRIPTION
                "This variable allows user to enable or disable Cisco
                 Group Management Protocol (CGMP)."

         ::= { sCgmpInfo 1 }

sCgmpFastLeaveEnable OBJECT-TYPE
        SYNTAX  INTEGER {
                        enabled(1),     -- enable  CGMP Fast Leave
                        disabled(2)     -- disable CGMP fast Leave
                        }
        MAX-ACCESS  read-write
        STATUS  current
        DESCRIPTION
                "This variable allows user to enable or disable Cisco
                 Group Management Protocol (CGMP) Fast Leave processing."

        ::= { sCgmpInfo 2 }

sCgmpRouterHoldTime OBJECT-TYPE
        SYNTAX INTEGER(10..6000)
        UNITS "seconds"
        MAX-ACCESS  read-write
        STATUS  current
        DESCRIPTION
                "Multicast routers that support CGMP will send CGMP
                 join message to advertise themselves to switches within
                 a network. A switch that receives a CGMP message will save
                 the information and set a timer equal to this router hold
                 time. When the router hold time expires, the switch will
                 remove the Router entry from CGMP. The default value 
                 is 300 seconds."

        ::= { sCgmpInfo 3 }

sCgmpRouterTable OBJECT-TYPE
        SYNTAX SEQUENCE OF SCgmpRouterEntry
        MAX-ACCESS not-accessible
        STATUS current
        DESCRIPTION                   
                "List of Router entries present on the switch."

        ::= { sCgmpInfo 4 } 

sCgmpRouterEntry OBJECT-TYPE
        SYNTAX SCgmpRouterEntry
        MAX-ACCESS not-accessible
        STATUS current
        DESCRIPTION                         
                "Entry containing multicast router information for
                a particular router. These entries are created when a
                router sends a CGMP join for itself on a particular
                vlan. Entries may be removed when a router entry's
                sCgmpRouterHoldTime expires, or when explicitly 
                removed by a user."

        INDEX { sCgmpRouterVlanIndex, dot1dBasePort, sCgmpRouterMacAddress}

        ::= { sCgmpRouterTable 1 } 

SCgmpRouterEntry ::= SEQUENCE {
                sCgmpRouterVlanIndex
                SCgmpVlanIndex,                
                sCgmpRouterMacAddress
                MacAddress,
                sCgmpRouterEntryStatus
                RowStatus
        }

sCgmpRouterVlanIndex OBJECT-TYPE
        SYNTAX SCgmpVlanIndex
        MAX-ACCESS not-accessible
        STATUS current
        DESCRIPTION     
                "An index value that uniquely identifies the 
                vlan on which the router identified by this router entry
                is located. This value may be the same as used in the 
                CISCO-VLAN-MEMBERSHIP-MIB and the CISCO-VTP-MIB for
                the same given vlan, if VTP is present and in use
                on the switch."

        ::= { sCgmpRouterEntry 1 }

sCgmpRouterMacAddress OBJECT-TYPE
        SYNTAX MacAddress
        MAX-ACCESS not-accessible
        STATUS current
        DESCRIPTION     
                "An 802 MAC Address in canonical format. This is the 
                MAC address of the router itself."

        ::= { sCgmpRouterEntry 3 }

sCgmpRouterEntryStatus OBJECT-TYPE
        SYNTAX  RowStatus
        MAX-ACCESS read-write
        STATUS current
        DESCRIPTION 
                "This object is used by a management station to
                 delete the row entry in sCgmpRouterTable following 
                 the RowStatus textual convention. The managment
                 station may remove this entry by setting destroy (6).
                 Entries may not be created. Entries removed may 
                 reappear in normal CGMP operation when the router
                 sends another self join."

        ::= { sCgmpRouterEntry 4 }


-- Notifications 

-- none


-- Conformance

ciscoSwitchCgmpMIBConformance  OBJECT IDENTIFIER ::= 
                                { ciscoSwitchCgmpMIB 3 }
ciscoSwitchCgmpMIBCompliances  OBJECT IDENTIFIER ::= 
                                { ciscoSwitchCgmpMIBConformance 1 }
ciscoSwitchCgmpMIBGroups       OBJECT IDENTIFIER ::= 
                                { ciscoSwitchCgmpMIBConformance 2 }

-- Compliance

ciscoSwitchCgmpMIBCompliance MODULE-COMPLIANCE
        STATUS current
        DESCRIPTION
                "The compliance statement for switches implementing
                the Cisco Group Management Protocol"
        MODULE -- this module
        MANDATORY-GROUPS { sCgmpGroup }

        OBJECT     sCgmpRouterHoldTime
        MIN-ACCESS read-only
        DESCRIPTION "Write access not required"

        ::= { ciscoSwitchCgmpMIBCompliances 1 } 

-- Units of Conformance

sCgmpGroup OBJECT-GROUP
        OBJECTS {
                sCgmpEnable,
                sCgmpFastLeaveEnable,
                sCgmpRouterHoldTime,                
                sCgmpRouterEntryStatus
                }
        STATUS current
        DESCRIPTION
                "Switch-side Cisco Group Management Protocol."
        ::= { ciscoSwitchCgmpMIBGroups 1 }


END