CISCO-VLAN-IFTABLE-RELATIONSHIP-MIB device MIB details by Cisco

CISCO-VLAN-IFTABLE-RELATIONSHIP-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-VLAN-IFTABLE-RELATIONSHIP-MIB.

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

-- *****************************************************************
-- CISCO-VLAN-IFTABLE-RELATIONSHIP-MIB - show the VLAN-ID and 
--    ifIndex for routed VLANs (ISL subinterfaces, and SVIs)
--
-- January 1999, Cliff Sojourner
--
-- Copyright (c) 1999 by cisco Systems, Inc.
-- All rights reserved.
-- *****************************************************************
--

CISCO-VLAN-IFTABLE-RELATIONSHIP-MIB DEFINITIONS ::= BEGIN

IMPORTS
    MODULE-IDENTITY,
    OBJECT-TYPE
        FROM SNMPv2-SMI
    MODULE-COMPLIANCE, OBJECT-GROUP
        FROM SNMPv2-CONF
    ciscoMgmt
        FROM CISCO-SMI
    InterfaceIndexOrZero
        FROM CISCO-TC
    InterfaceIndex
        FROM IF-MIB
    VlanIndex
        FROM CISCO-VTP-MIB;

ciscoVlanIfTableRelationshipMIB MODULE-IDENTITY
    LAST-UPDATED        "9904010530Z"
    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

        E-mail: cs-snmp@cisco.com"
    DESCRIPTION
        "Cisco VLAN ifTable Relationship MIB lists VLAN-id and ifIndex 
         information for routed VLAN interfaces.  

         A routed VLAN interface is the router interface or sub-interface 
         to which the router's IP address on the VLAN is attached.  
         For example, an ISL, SDE, or 802.1Q encapsulated
         subinterface, or Switched Virtual Interface (SVI)."
    ::= { ciscoMgmt 128 }

cviMIBObjects OBJECT IDENTIFIER ::=  { ciscoVlanIfTableRelationshipMIB 1 }
cviGlobals    OBJECT IDENTIFIER ::=  { cviMIBObjects 1 }

cviVlanInterfaceIndexTable OBJECT-TYPE
    SYNTAX     SEQUENCE OF CviVlanInterfaceIndexEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
        "The cviVlanInterfaceIndexTable provides a way to 
        translate a VLAN-id in to an ifIndex, so that 
        the routed VLAN interface's routing configuration 
        can be obtained from interface entry in ipRouteTable.

        Note that some routers can have interfaces to multiple
        VLAN management domains, and therefore can have multiple 
        routed VLAN interfaces which connect to different VLANs 
        having the same VLAN-id.  Thus, it is possible to have 
        multiple rows in this table for the same VLAN-id.

        The cviVlanInterfaceIndexTable also provides a way
        to find the VLAN-id from an ifTable VLAN's ifIndex."
    ::= { cviGlobals 1 }

CviVlanInterfaceIndexEntry ::= SEQUENCE {
    cviVlanId	        VlanIndex,
    cviPhysicalIfIndex  InterfaceIndexOrZero,
    cviRoutedVlanIfIndex      InterfaceIndex
    } 

cviVlanInterfaceIndexEntry OBJECT-TYPE
    SYNTAX     CviVlanInterfaceIndexEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
        "Each entry represents a routed VLAN interface, its
        corresponding physical port if any, and the ifTable entry
        for the routed VLAN interface.

        Entries are created by the agent when the routed VLAN interface
        is created.  Operational status of routing does not affect
        the entries listed here.  For routing configuration please refer
        to ipRouteTable.

        Entries are deleted by the agent when the routed VLAN interface
        is removed from the system configuration."
    INDEX { cviVlanId, cviPhysicalIfIndex }
    ::= { cviVlanInterfaceIndexTable 1 }

cviVlanId  OBJECT-TYPE
    SYNTAX     VlanIndex
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION 
        "The VLAN-id number of the routed VLAN interface."
    ::= { cviVlanInterfaceIndexEntry 1 }

cviPhysicalIfIndex  OBJECT-TYPE
    SYNTAX     InterfaceIndexOrZero
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION 
        "For subinterfaces, this object is the ifIndex of the 
        physical interface for the subinterface.
        
        For Switch Virtual Interfaces (SVIs), this object is zero."
    ::= { cviVlanInterfaceIndexEntry 2 }

cviRoutedVlanIfIndex OBJECT-TYPE
    SYNTAX     InterfaceIndex
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION 
        "The index for the ifTable entry associated with 
        this routed VLAN interface."
    ::= { cviVlanInterfaceIndexEntry 3 }


cviMIBConformance OBJECT IDENTIFIER ::= { cviMIBObjects 3 }
cviMIBCompliances OBJECT IDENTIFIER ::= { cviMIBConformance 1 }
cviMIBGroups      OBJECT IDENTIFIER ::= { cviMIBConformance 2 }

--
-- Conformance
--

cviMIBCompliance MODULE-COMPLIANCE
    STATUS current
    DESCRIPTION
        "The compliance statement for entities which implement
         the CISCO-VLAN-INTERFACE-MIB"
    MODULE        -- this module
        MANDATORY-GROUPS { cviMIBGroup }
    ::= { cviMIBCompliances 1 }

--
-- Units of Conformance
--

cviMIBGroup OBJECT-GROUP
    OBJECTS {
        cviRoutedVlanIfIndex
    }
    STATUS current
    DESCRIPTION
        "A set of objects to obtain VLAN-ID and ifIndex
         information for routed VLAN interfaces."
    ::= { cviMIBGroups 1 }

END