451 lines
14 KiB
Plaintext
451 lines
14 KiB
Plaintext
-- *****************************************************************
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-- CISCO-BRIDGE-DOMAIN-MIB.my : Cisco Bridge Domain MIB
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--
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-- Oct 2007, Madhavi Dokku
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--
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-- Copyright (c) 2007 by Cisco Systems, Inc.
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--
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-- All rights reserved.
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-- *****************************************************************
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CISCO-BRIDGE-DOMAIN-MIB DEFINITIONS ::= BEGIN
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IMPORTS
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MODULE-IDENTITY,
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OBJECT-TYPE,
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Unsigned32
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FROM SNMPv2-SMI
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MODULE-COMPLIANCE,
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OBJECT-GROUP
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FROM SNMPv2-CONF
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TEXTUAL-CONVENTION,
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TruthValue,
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RowStatus,
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StorageType
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FROM SNMPv2-TC
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ifIndex
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FROM IF-MIB
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ciscoMgmt
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FROM CISCO-SMI;
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ciscoBridgeDomainMIB MODULE-IDENTITY
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LAST-UPDATED "200712290000Z"
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ORGANIZATION "Cisco Systems, Inc."
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CONTACT-INFO
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"Cisco Systems
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Customer Service
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Postal: 170 W Tasman Drive
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San Jose, CA 95134
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USA
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Tel: +1 800 553-NETS
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E-mail: cs-ethermibs@cisco.com"
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DESCRIPTION
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"A bridge domain is one of the means by which it is possible
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to define a broadcast domain on a bridging device. It is an
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alternative to 802.1D bridge-groups and to 802.1Q VLAN
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bridging.
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Bridge domain is the service specification, and specifies the
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broadcast domain number on which this frame of this particular
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service instance must be made available on. The physical and
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virtual interfaces that can comprise a bridge domain are
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heterogeneous in nature comprising Ethernet service instances,
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WAN Virtual Circuit for ATM or Frame Relay and VFIs. However,
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the frame encapsulations for all interface types are
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essentially Ethernet.
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Without bridge-domains, VLANs would have to be globally unique
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per device and one would only be restricted to the theoretical
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maximum of 4095 VLANs for single tagged traffic. However
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with the introduction of bridge-domains, one can
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associate a service instance with a bridge-domain and all
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service instances in the same bridge-domain form a
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broadcast domain. Bridge-domain ID determines the
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broadcast domain and the VLAN id is merely used to match
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and map traffic. With bridge domain feature configured
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VLAN IDs would be unique per interface only and not globally.
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Thus bridge domains make VLAN ids have only local
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significance per port
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Differences between Bridge Domains and 802.1AD Bridges:
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=======================================================
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1. Scope of the VLAN technology which uses 802.1 AD is global to
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the box.
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But in case of Bridge domain, the scope of vlan is local to
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interface
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2. Switchport 802.1AD restricts the number of broadcast domain
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on a box to 4095.
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However, with Bridge domains, we can have up to 16k broadcast
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domain.
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3. Under a single Bridge domain service instance, there can be
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flexible service mapping criterion.(i.e match based on
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outer vlan, outer cos, inner vlan, inner cos and payload
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ethertype).
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Whereas in case of switch port 802.1AD/dot1q this is not
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supported.
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Similarities between Bridge Domains and 802.1AD Bridges:
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=======================================================
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1. Both use the same MAC address lookup for forwarding.
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2. Both work with protocols like STP, DTP etc.
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3. Both of them classify 'ports' in a system into Bridges/Bridge
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Domains.
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Ethernet service instance is the instantiation of an Ethernet
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virtual circuit on a given port on a given router. In other
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words, an Ethernet service instance is an object that holds
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information about the layer 2 service that is being offered
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on a given port of a given router as part of a given Ethernet
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virtual circuit. Bridge domains feature is currently supported
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on ethernet service instances only and can be later extented
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to other interfaces like ATM and Frame Relay.
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This MIB helps the network management personnel to find out the
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details of various broadcast domains configured in the network.
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Definition of terms and acronyms:
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ATM: Asynchronous Transfer mode
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BD: Bridge Domain
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C-mac: Customer MAC
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EVC: Ethernet Virtual Circuit
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FR: Frame Relay
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SH: Split Horizon
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VFI: Virtual Forwarding Instance
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VLAN: Virtual Local Area Network
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WAN: Wide Area Network"
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REVISION "200712290000Z"
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DESCRIPTION
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"Modified the MIB description with details on similarities and
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differences between Bridge Domains and 802.1AD Bridges."
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REVISION "200712040000Z"
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DESCRIPTION
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"Initial version of this MIB module."
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::= { ciscoMgmt 642 }
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ciscoBdMIBNotifications OBJECT IDENTIFIER
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::= { ciscoBridgeDomainMIB 0 }
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ciscoBdMIBObjects OBJECT IDENTIFIER
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::= { ciscoBridgeDomainMIB 1 }
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ciscoBdMIBConformance OBJECT IDENTIFIER
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::= { ciscoBridgeDomainMIB 2 }
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cbdSystemInfo OBJECT IDENTIFIER
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::= { ciscoBdMIBObjects 1 }
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cbdMemberInfo OBJECT IDENTIFIER
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::= { ciscoBdMIBObjects 2 }
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-- Textual Conventions
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CbdType ::= TEXTUAL-CONVENTION
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STATUS current
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DESCRIPTION
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"Defines the different types of bridge domain members:
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'other': none of the following
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'ether': Ethernet Service Instance
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'atmVc': ATM Virtual connection
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'frVc': Frame Relay Virtual Connection"
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SYNTAX INTEGER {
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other(1),
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ether(2),
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atmVc(3),
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frVc(4)
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}
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cbdMembersConfigured OBJECT-TYPE
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SYNTAX Unsigned32
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MAX-ACCESS read-only
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STATUS current
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DESCRIPTION
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"This object indicates the number of bridge domain
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members configured on this bridge domain."
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::= { cbdSystemInfo 1 }
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-- Member Info Table
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cbdMemberInfoTable OBJECT-TYPE
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SYNTAX SEQUENCE OF CbdMemberInfoEntry
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MAX-ACCESS not-accessible
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STATUS current
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DESCRIPTION
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"This table provides the bridge domain member attributes
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of the members currently configured for each bridge
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domain."
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::= { cbdMemberInfo 1 }
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cbdMemberInfoEntry OBJECT-TYPE
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SYNTAX CbdMemberInfoEntry
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MAX-ACCESS not-accessible
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STATUS current
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DESCRIPTION
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"A conceptual row in cbdMemberInfoTable. This is indexed
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by ifIndex and cbdSIIndex. Each row is created when a bridge
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domain member is configured under a service instance."
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INDEX {
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ifIndex,
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cbdSIIndex
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}
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::= { cbdMemberInfoTable 1 }
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CbdMemberInfoEntry ::= SEQUENCE {
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cbdSIIndex Unsigned32,
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cbdMemberType CbdType,
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cbdMemberOperState INTEGER ,
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cbdMemberAdminState INTEGER ,
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cbdMemberSplitHorizon TruthValue,
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cbdMemberSplitHorizonNum Unsigned32,
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cbdMemberStorageType StorageType,
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cbdMemberStatus RowStatus,
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cbdMembercMac TruthValue
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}
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cbdSIIndex OBJECT-TYPE
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SYNTAX Unsigned32 (1..4294967295 )
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MAX-ACCESS not-accessible
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STATUS current
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DESCRIPTION
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"This object indicates an arbitary index that uniquely
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identifies the Service Instance to which this bridge domain
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member belongs to."
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::= { cbdMemberInfoEntry 1 }
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cbdMemberType OBJECT-TYPE
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SYNTAX CbdType
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MAX-ACCESS read-create
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STATUS current
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DESCRIPTION
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"This object identifies the type of the bridge domain member
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like ATM VC, Frame Relay VC, or Ethernet service."
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DEFVAL { other }
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::= { cbdMemberInfoEntry 2 }
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cbdMemberOperState OBJECT-TYPE
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SYNTAX INTEGER {
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unknown(1),
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up(2),
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down(3)
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}
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MAX-ACCESS read-only
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STATUS current
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DESCRIPTION
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"This object indicates the operational state of the bridge
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domain Member. Operational state of the Bridge domain member
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is same as the operational state of the underlying service
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instance. Bridge domain members are configured under service
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instances and multiple service instances can be attached to a
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single physical interface defining various kinds of services.
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Bridge domain members have many to one relationship with
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interface
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Indexes. When ifOperStatus of the underlying interface is down,
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the state of cbdMemberOperState should be down. When
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ifOperStatus
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of the underlying interface is up, cbdMemberOperState can be
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either up or down based on the state of underlying service
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instance.
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'unknown': the bridge domain member is an unknown state.
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'up': the bridge domain member is fully operational and
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able to bridge the traffic. This means that both the
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physical interface and the underlying service instance
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are administratively up.
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'down': the Bridge Domain member is down and not
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capable of bridging. This state means either the underlying
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service instance is down or the interface is down."
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::= { cbdMemberInfoEntry 3 }
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cbdMemberAdminState OBJECT-TYPE
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SYNTAX INTEGER {
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unknown(1),
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up(2),
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down(3)
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}
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MAX-ACCESS read-create
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STATUS current
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DESCRIPTION
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"This object indicates the administrative state of the
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bridge domain Member. Admin state of the Bridge domain member
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is same as the admin state of the underlying service instance.
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Bridge domain members are configured under service instances
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and multiple service instances can be attached to a single
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physical interface defining various kinds of services. Bridge
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Domain members have many to one relationship with interface
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Indexes. When ifAdminStatus of the unerlying interface is down
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the state of cbdMemberAdminState should be down. When ifOperStatus
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of the underlying interface is up cbdMemberAdminState can be
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either up or down based on the state of underlying service
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instance.
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'unknown': the bridge domain member is in unknown
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administrative state.
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'up': the Bridge Domain member is administratively up. This
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means that both the physical interface and the underlying service
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instance are administratively up.
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'admindown': the Bridge Domain member is down as it is
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administratively configured to be down and is not
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capable of bridging. This means that either the underlying
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service instance is configured as administratively down or
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the physical interface is configured as administratively
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down."
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::= { cbdMemberInfoEntry 4 }
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cbdMemberSplitHorizon OBJECT-TYPE
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SYNTAX TruthValue
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MAX-ACCESS read-create
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STATUS current
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DESCRIPTION
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"This object indicates whether split horizon is
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configured on this bridge domain member."
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::= { cbdMemberInfoEntry 5 }
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cbdMemberSplitHorizonNum OBJECT-TYPE
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SYNTAX Unsigned32 (0..65535 )
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MAX-ACCESS read-create
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STATUS current
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DESCRIPTION
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"This object indicates the split horizon number if
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configured on the bridge domain member. Split horizon
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is used to avoid sending traffic between interfaces.
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Frames are not forwarded to the members belonging to the
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same split horizon group."
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DEFVAL { 0 }
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::= { cbdMemberInfoEntry 6 }
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cbdMemberStorageType OBJECT-TYPE
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SYNTAX StorageType
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MAX-ACCESS read-create
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STATUS current
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DESCRIPTION
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"This object specifies the storage type of this conceptual
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row. This object can only have a value 'nonVolatile'. Other
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values are not applicable for this conceptual row and are
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not supported."
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DEFVAL { nonVolatile }
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::= { cbdMemberInfoEntry 7 }
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cbdMemberStatus OBJECT-TYPE
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SYNTAX RowStatus
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MAX-ACCESS read-create
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STATUS current
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DESCRIPTION
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"This object enables the SNMP agent to create, modify,
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and delete rows in the cbdMemberInfoTable."
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DEFVAL { active }
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::= { cbdMemberInfoEntry 8 }
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cbdMembercMac OBJECT-TYPE
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SYNTAX TruthValue
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MAX-ACCESS read-create
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STATUS current
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DESCRIPTION
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"This object indicates if cmac is configured on this
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bridge domain member. Cmac denotes if this bridge domain is
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configured as a customer domain."
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::= { cbdMemberInfoEntry 9 }
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-- Notifications
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ciscoBdNotificationPrefix OBJECT IDENTIFIER
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::= { ciscoBdMIBNotifications 0 }
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-- Conformance
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ciscoBdMIBCompliances OBJECT IDENTIFIER
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::= { ciscoBdMIBConformance 1 }
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ciscoBdMIBGroups OBJECT IDENTIFIER
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::= { ciscoBdMIBConformance 2 }
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ciscoBdMIBComplianceRev1 MODULE-COMPLIANCE
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STATUS current
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DESCRIPTION
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"The compliance statement for entities which implement
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the CISCO-BRIDGE-DOMAIN-MIB."
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MODULE -- this module
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MANDATORY-GROUPS {
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cbdSystemInfoGroup,
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cbdMemberInfoGroup
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}
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::= { ciscoBdMIBCompliances 1 }
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-- Units of Conformance
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cbdSystemInfoGroup OBJECT-GROUP
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OBJECTS { cbdMembersConfigured }
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STATUS current
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DESCRIPTION
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"This group contain information about bridge domain."
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::= { ciscoBdMIBGroups 1 }
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cbdMemberInfoGroup OBJECT-GROUP
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OBJECTS {
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cbdMemberType,
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cbdMemberOperState,
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cbdMemberAdminState,
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cbdMemberSplitHorizon,
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cbdMemberSplitHorizonNum,
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cbdMemberStorageType,
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cbdMemberStatus,
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cbdMembercMac
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}
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STATUS current
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DESCRIPTION
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"This group contain information related to bridge domain
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members."
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::= { ciscoBdMIBGroups 2 }
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END
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