CISCO-WAN-ATM-PREF-ROUTE-MIB

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Organization: Cisco System Inc.

Last Updated: 2002-06-25

Category: ATM, Vendor: Cisco Devices

Description: Manages Cisco WAN ATM preferred route configurations for explicit path selection in ATM networks.

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What Is CISCO-WAN-ATM-PREF-ROUTE-MIB?

CISCO-WAN-ATM-PREF-ROUTE-MIB manages preferred-route configuration for ATM connections on Cisco WAN switching platforms, letting operators define explicit paths (sequences of nodes and ports) that an ATM connection should prefer over the network's default dynamic routing. It exposes a route table (cwaPrefRouteConfTable) describing each preferred route and a nested element table (cwaPrefRouteNwElemTable) listing the ordered node/port hops that make up the path. Its monitoring role is largely configuration/state verification: an operator checks cwaPrefRouteRowStatus and cwaPrefRouteNwElemRowStatus to confirm a preferred route is active and correctly provisioned, since a route stuck in a non-active row status indicates a configuration or path-availability fault rather than a hardware failure per se. It is a Cisco-specific WAN switching MIB with no direct dependency on IETF ATM standards beyond general ATM addressing concepts. It is used in Cisco MGX/BPX ATM WAN cores where traffic engineering requires explicit path control. Engineers can download the CISCO-WAN-ATM-PREF-ROUTE-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in CISCO-WAN-ATM-PREF-ROUTE-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 MGX/BPX WAN ATM switches

Monitoring Examples

An operator would inspect cwaPrefRouteConfTable entries by cwaPrefRouteId, checking cwaPrefRouteNwElemCount against the actual number of rows in cwaPrefRouteNwElemTable to verify the full path was provisioned, then walk cwaPrefRouteNwElemPos/cwaPrefRouteNwElemNodeId/cwaPrefRouteNwElemPortId in order to confirm the intended node-by-node path. A cwaPrefRouteRowStatus other than active suggests the preferred route failed to come up, likely falling back to default routing.

What Can Be Monitored

preferred route configuration and status
route element count
ordered node/port hop sequence
row status of route and element entries

Imported Objects

From CISCO-SMI

ciscoMgmt

OBJECT-IDENTITY

From PNNI-MIB

PnniNodeId
PnniPortId

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

MODULE-IDENTITY
OBJECT-TYPE
Unsigned32

From SNMPv2-TC

RowStatus
TEXTUAL-CONVENTION

OIDs

OID symbolic	OID numeric	Type	Access	Description
ciscoWanATMPrefRouteMIB	1.3.6.1.4.1.9.9.99996			This MIB facilitates the maintenance of preferred routes configuration.
ciscoWanATMPrefRouteMIBNotifs	1.3.6.1.4.1.9.9.99996.0
ciscoWanATMPrefRouteMIBObjects	1.3.6.1.4.1.9.9.99996.1
cwaPrefRouteConfTable	1.3.6.1.4.1.9.9.99996.1.1		not-accessible	This table contains a list of preferred routes configured at the master node.
cwaPrefRouteConfEntry	1.3.6.1.4.1.9.9.99996.1.1.1		not-accessible	An entry in the preferred routes table. Each entry is keyed by a route identifier. The number of leading network elements to be used are specified by the object cwaPrefRouteNetwElemCount.
ROU cwaPrefRouteId	1.3.6.1.4.1.9.9.99996.1.1.1.1	RouteId	not-accessible	A unique identifier to an entry of the preferred routes table. The identifier cannot be zero.
U32 cwaPrefRouteNwElemCount	1.3.6.1.4.1.9.9.99996.1.1.1.2	Unsigned32	read-create	A value that indicates in the preferred route entry the number of leading network elements which are integral to the preferred route.
ROW cwaPrefRouteRowStatus	1.3.6.1.4.1.9.9.99996.1.1.1.3	RowStatus	read-create	To create, modify and delete a preferred route entry. Only the value 'active', 'createAndGo', and 'destroy' are supported. The value of this variable is set to 'active' by the managed system for each valid entry. If a management station wants to delete an entry from the database, this value is set to 'destroy'. If a management station wants to create a new entry, this value is set to 'createAndGo'. The modification of an 'active' row is permitted.
cwaPrefRouteNwElemTable	1.3.6.1.4.1.9.9.99996.1.2		not-accessible	The table contains a list of network elements, each of which is indexed by the route identifier and the position of the network element within the preferred route. Position 1 refers to the first network element, while position 20 refers to the last network element.
cwaPrefRouteNwElemEntry	1.3.6.1.4.1.9.9.99996.1.2.1		not-accessible	An entry in the preferred route network element table. The entry can be modified on the fly. The entry will not be used in the preferred route if its position specified by cwaPrefRouteNwElemPos is greater than cwaPrefRouteNwElemCount.
U32 cwaPrefRouteNwElemPos	1.3.6.1.4.1.9.9.99996.1.2.1.1	Unsigned32	not-accessible	The network element position identifies the position of the network element within the preferred route.
PNN cwaPrefRouteNwElemNodeId	1.3.6.1.4.1.9.9.99996.1.2.1.2	PnniNodeId	read-create	The 22-octet logical node identifier of a PNNI node.
PNN cwaPrefRouteNwElemPortId	1.3.6.1.4.1.9.9.99996.1.2.1.3	PnniPortId	read-create	The 32-bit logical port identifier of an egress port on the associated PNNI node for the network element.
ROW cwaPrefRouteNwElemRowStatus	1.3.6.1.4.1.9.9.99996.1.2.1.4	RowStatus	read-create	To create, modify and delete a network element (node identifier and port identifier). Only the value 'active', 'createAndGo', and 'destroy' are supported. The value of this variable is set to 'active' by the managed system for each valid entry. If a management station wants to delete an entry from the database, this value is set to 'destroy'. If a management station wants to create a new entry, this value is set to 'createAndGo'. The modification of an 'active' row is permitted.
cwaPrefRouteConformance	1.3.6.1.4.1.9.9.99996.2
cwaPrefRouteCompliances	1.3.6.1.4.1.9.9.99996.2.1
cwaPrefMIBCompliance	1.3.6.1.4.1.9.9.99996.2.1.1			The compliance statement for SNMPv2 entities which implement the preferred route.
cwaPrefMIBGroups	1.3.6.1.4.1.9.9.99996.2.2
cwaPrefRouteMIBGroups	1.3.6.1.4.1.9.9.99996.2.2.1			This group contains a list of objects which identify a preferred route.

RFC description

A Cisco SNMP MIB for managing preferred route selections and policies for ATM (Asynchronous Transfer Mode) connections in Cisco WAN networks.

Start monitoring Cisco MGX/BPX ATM switches 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-WAN-ATM-PREF-ROUTE-MIB

What Is CISCO-WAN-ATM-PREF-ROUTE-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description