CISCO-MPOA-EXT-MIB

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Organization: Cisco Systems, Inc.

Last Updated: 2000-01-10

Category: ATM, Cisco Devices

Description: Extends Multiprotocol Over ATM (MPOA) management with Cisco-specific client and server configuration objects.

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What Is CISCO-MPOA-EXT-MIB?

CISCO-MPOA-EXT-MIB is a Cisco extension to the ATM Forum's Multiprotocol Over ATM (MPOA) MIB, adding objects to retrieve information about MPOA shortcut virtual channel connections (VCCs) and to bind MPOA client (MPC) and server (MPS) entities to physical interfaces. It exposes configuration and state data for shortcut VCCs (VPI/VCI, destination ATM address) and interface-to-MPC/MPS mappings. Its monitoring focus is on the software/protocol state of ATM shortcut paths: verifying that shortcut VCCs are correctly established with the expected VPI/VCI and destination address, and that MPC/MPS bindings to interfaces are active (row status), which helps diagnose failed or missing ATM shortcuts. It explicitly builds on and depends on the ATM Forum's base MPOA MIB. It is deployed in legacy Cisco ATM-based campus/WAN networks using MPOA for efficient inter-subnet routing shortcuts over ATM. Engineers can download the CISCO-MPOA-EXT-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in CISCO-MPOA-EXT-MIB. Use the built-in SNMP Monitoring Browser to explore available variables, view their current values and descriptions, and select the objects you want to monitor. You can then create SNMP monitors, configure thresholds, and receive alerts when monitored values change.

Supported Devices

Cisco ATM switch/router (MPOA client/server platform)

Monitoring Examples

An administrator would poll cMpcExtShortcutVCCTable (cmpcSCVpi, cmpcSCVci, cmpcDestAtmAddr) to confirm a shortcut VCC was established to the expected destination ATM address, revealing a misrouted or failed shortcut if the values don't match. cMpcInterfaceMappingTable and cMpsInterfaceMappingTable (indexed by cMpcInterfaceMappingIndex) show whether an interface is correctly bound to an MPC or MPS entity via cMpcInterfaceMappingRowStatus. A shortcut VCC entry that never populates or times out would indicate an MPOA cut-through failure between client and server.

What Can Be Monitored

shortcut VCC VPI/VCI values
shortcut VCC destination ATM address
MPC-to-interface binding status
MPS-to-interface binding status
row status of interface mappings

Imported Objects

From ATM-FORUM-TC-MIB

AtmAddress

From CISCO-SMI

ciscoMgmt

OBJECT-IDENTITY

From IF-MIB

InterfaceIndex

From LAN-EMULATION-CLIENT-MIB

VciInteger
VpiInteger

From MPOA-MIB

mpcIndex	OBJECT-TYPE
mpsIndex	OBJECT-TYPE

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

MODULE-IDENTITY
OBJECT-TYPE

From SNMPv2-TC

RowStatus

OIDs

OID symbolic	OID numeric	Type	Access	Description
ciscoMpoaExtMIB	1.3.6.1.4.1.9.9.99999			This MIB module is a Cisco extension to the ATM Forum's MPOA MIB. This MIB module consists of object groups to retrieve information about MPOA shortcut VCCs and to bind MPOA entities (MPC & MPS) to physical interfaces.
ciscoMpoaExtMIBObjects	1.3.6.1.4.1.9.9.99999.1
cMpcExtShortcutVCC	1.3.6.1.4.1.9.9.99999.1.1
cMpcExtShortcutVCCTable	1.3.6.1.4.1.9.9.99999.1.1.1		not-accessible	An extension to the mpcConfig table in the MPOA-MIB. This table identifies the VCI and VPI of each shortcut that is setup by an MPC. A shortcut is a VCC that is setup between the Ingress and Egress MPC.
cMpcExtShortcutVCCEntry	1.3.6.1.4.1.9.9.99999.1.1.1.1		not-accessible	Entries in the table for the shortcut VCCs setup by an MPC.
NUM cmpcSCVpi	1.3.6.1.4.1.9.9.99999.1.1.1.1.1	VpiInteger	not-accessible	The VPI of the shortcut VCC setup by the MPC specified by MPC index. The destination of the shortcut VCC is specified by cmpcDestAtmAddr.
NUM cmpcSCVci	1.3.6.1.4.1.9.9.99999.1.1.1.1.2	VciInteger	not-accessible	The VCI of the shortcut VCC setup by the MPC specified by the MPC index. The destination of the shortcut VCC is specified by cmpcDestAtmAddr.
ADR cmpcDestAtmAddr	1.3.6.1.4.1.9.9.99999.1.1.1.1.3	AtmAddress	read-only	The ATM address of the destination of this shortcut VCC.
cMpcInterface	1.3.6.1.4.1.9.9.99999.1.2
cMpcInterfaceMappingTable	1.3.6.1.4.1.9.9.99999.1.2.1		not-accessible	Table that contains information about the MPC interface binding.
cMpcInterfaceMappingEntry	1.3.6.1.4.1.9.9.99999.1.2.1.1		not-accessible	Each row in this table specifies the interface (by ifIndex) to which an MPC (specified by mpcIndex) is bound. Creation of an MPC does not create an entry in this table. After successfully creating an MPC, the MPC has to be bound to an interface in order to create an entry in this table.
NUM cMpcInterfaceMappingIndex	1.3.6.1.4.1.9.9.99999.1.2.1.1.1	InterfaceIndex	read-create	The Interface (specified by the cMpcInterfaceMappingIndex) to which the MPS (specified by mpcIndex) is bound to. This interface has to be an ATM physical interface.
ROW cMpcInterfaceMappingRowStatus	1.3.6.1.4.1.9.9.99999.1.2.1.1.2	RowStatus	read-create	Row status of the row in the mapping table. Specifying a 'valid' value for the cMpcInterfaceMappingIndex (interface index of an ATM physical interface) in the set operation, along with a value of 4 (createAndGo) for the cMpcInterfaceMappingRowStatus, will bind the MPC specified by mpcIndex to the specified physical interface and create a row entry in this table.
cMpsInterface	1.3.6.1.4.1.9.9.99999.1.3
cMpsInterfaceMappingTable	1.3.6.1.4.1.9.9.99999.1.3.1		not-accessible	Table that contains information about the MPS interface binding.
cMpsInterfaceMappingEntry	1.3.6.1.4.1.9.9.99999.1.3.1.1		not-accessible	Each row in this table specifies the interface (by ifIndex) to which an MPS (specified by mpsIndex) is bound. Creation of an MPS does not create an entry in this table. After successfully creating an MPS, the MPS has to be bound to an interface in order to create an entry in this table.
NUM cMpsInterfaceMappingIndex	1.3.6.1.4.1.9.9.99999.1.3.1.1.1	InterfaceIndex	read-create	The Interface (specified by the cMpsInterfaceMappingIndex) to which the MPS (specified by mpsIndex) is bound to. This interface has to be an ATM physical interface.
ROW cMpsInterfaceMappingRowStatus	1.3.6.1.4.1.9.9.99999.1.3.1.1.2	RowStatus	read-create	Row status of the row in the mapping table. Specifying a 'valid' value for the cMpsInterfaceMappingIndex (interface index of an ATM physical interface) in the set operation, along with a value of 4 (createAndGo) for the cMpsInterfaceMappingRowStatus, will bind the MPS specified by mpsIndex to the specified physical interface and create a row entry in this table. Similarly, specifying a value of 6 (destroy) for the cMpsInterfaceMappingRowStatus, along with the mpsIndex of the MPS, will detach the specified MPS from the physical interface(i.e. if it is already attached).
ciscoMpoaExtMIBNotificationPrefix	1.3.6.1.4.1.9.9.99999.2
ciscoMpoaExtMIBNotifications	1.3.6.1.4.1.9.9.99999.2.0
ciscoMpoaExtMIBConformance	1.3.6.1.4.1.9.9.99999.3
ciscoMpoaExtMIBCompliances	1.3.6.1.4.1.9.9.99999.3.1
ciscoMpoaExtMIBCompliance	1.3.6.1.4.1.9.9.99999.3.1.1			This module should be implemented by all Cisco devices supporting MPOA Clients.
ciscoMpoaExtMIBGroups	1.3.6.1.4.1.9.9.99999.3.2
ciscoMpoaExtShorcutVCCMIBGroup	1.3.6.1.4.1.9.9.99999.3.2.1			A collection of objects related to identifying a shorcut VCC setup by an MPC.
ciscoMpoaExtMpcInterfaceMappingGroup	1.3.6.1.4.1.9.9.99999.3.2.2			A collection of objects related to identify the interface to which an MPC is bound to.
ciscoMpoaExtMpsInterfaceMappingGroup	1.3.6.1.4.1.9.9.99999.3.2.3			A collection of objects related to identify the interface to which an MPS is bound to.

RFC description

Manages MPOA shortcut VCC configuration and binding to physical interfaces on ATM devices.

Start monitoring Cisco ATM switch/router (MPOA client/server, legacy) with a free 30-day trial of IPNetwork Monitor. Import MIBs, browse SNMP OIDs, create custom SNMP monitors, configure alerts, and monitor any SNMP-enabled network device from a single console.

Download CISCO-MPOA-EXT-MIB

What Is CISCO-MPOA-EXT-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description