TOKENRING-STATION-SR-MIB

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Organization: IETF Interfaces MIB Working Group

Last Updated: 1994-12-16

Category: Network Interfaces, Routing Protocols

Description: Defines managed objects for IEEE 802.5 end-stations to manage source routing on Token Ring networks.

IPNetwork Monitor uses several OIDs from this MIB in network discovery and polling the applicable devices. Start monitoring TOKENRING-STATION-SR-MIB with a free 30-day trial of IPNetwork Monitor.

What Is TOKENRING-STATION-SR-MIB?

TOKENRING-STATION-SR-MIB is an IETF standards-track MIB (RFC 1749, dot5SrMIB under mib-2) that models source-route management for end-stations on IEEE 802.5 Token Ring networks. Its single table, dot5SrRouteTable, holds the station's Routing Information Field (RIF) database — one entry per destination MAC address discovered via Single Path or All Paths Explorer frames — recording the Routing Control field and the embedded bridge/ring ID sequence that defines the source route to that destination, along with row lifecycle status. While primarily a configuration/topology-discovery MIB rather than a counter-heavy statistics MIB, monitoring it reveals whether a station has learned valid source routes to its peers and whether those routes remain active, important for diagnosing connectivity failures or suboptimal (longer) paths on source-routed segments. It depends on RFC1213-MIB for interface indexing and has no vendor-specific dependencies, applying to any IEEE 802.5 Token Ring end-station implementing source routing, and the TOKENRING-STATION-SR-MIB MIB remains useful today mainly for maintaining legacy Token Ring infrastructure.

IPNetwork Monitor allows you to monitor SNMP objects defined in TOKENRING-STATION-SR-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

vendor-neutral, standards-based MIB (RFC 1749), applicable to IEEE 802.5 Token Ring end-stations from any manufacturer

Monitoring Examples

An operator polls dot5SrRouteTable for a given ifIndex/destination pair to inspect the embedded bridge/ring ID sequence and dot5SrRouteStatus; a route stuck in a non-active status, or a route descriptor that grows longer over time for the same destination, would indicate the direct path was lost and traffic is now traversing a longer, less efficient source route.

What Can Be Monitored

source route table entries per destination MAC
routing control field values
embedded bridge/ring ID sequence (route path)
route row status (active/lifecycle)

Imported Objects

From RFC1213-MIB

ifIndex
mib-2

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

MODULE-IDENTITY
OBJECT-TYPE

From SNMPv2-TC

MacAddress
RowStatus
TEXTUAL-CONVENTION

OIDs

OID symbolic	OID numeric	Type	Access	Description
dot5SrMIB	1.3.6.1.2.1.42			The MIB module for managing source routes in end-stations on IEEE 802.5 Token Ring networks.
dot5SrMIBObjects	1.3.6.1.2.1.42.1
dot5SrRouteTable	1.3.6.1.2.1.42.1.1		not-accessible	The table of source-routing routes. This represents the 802.5 RIF database.
dot5SrRouteEntry	1.3.6.1.2.1.42.1.1.1		not-accessible	Information on a specific route. An entry is created whenever a 'Single Path Explorer' or an 'All Paths Explorer' discovers a route to a neighbor not currently in the table, or whenever an 'All Paths Explorer' discovers a better (e.g., shorter) route than the route currently stored in the table. This is done on behalf of any network layer client. The ifIndex value in the INDEX clause refers to the value of MIB-II's ifIndex object for the interface on which the route is in effect.
MAC dot5SrRouteDestination	1.3.6.1.2.1.42.1.1.1.2	MacAddress	not-accessible	The destination of this route.
OCT dot5SrRouteControl	1.3.6.1.2.1.42.1.1.1.3	OCTET STRING	read-create	The value of Routing Control field for this route.
SOU dot5SrRouteDescr	1.3.6.1.2.1.42.1.1.1.4	SourceRoute	read-create	The embedded sequence of bridge and ring ID's for this route. For destinations on the local ring, the value of this object is the zero-length string.
ROW dot5SrRouteStatus	1.3.6.1.2.1.42.1.1.1.5	RowStatus	read-create	The status of this row. Values of the instances of dot5SrRouteControl and dot5SrRouteDescr can be modified while the row's status is 'active.
dot5SrConformance	1.3.6.1.2.1.42.2
dot5SrGroups	1.3.6.1.2.1.42.2.1
dot5SrRouteGroup	1.3.6.1.2.1.42.2.1.1			A collection of objects providing for the management of source routes in stations on IEEE 802.5 source-routing networks.
dot5SrCompliances	1.3.6.1.2.1.42.2.2
dot5SrCompliance	1.3.6.1.2.1.42.2.2.1			The compliance statement for SNMPv2 entities which implement the IEEE 802.5 Station Source Route MIB.

RFC description

Manages source routing tables for end-stations on IEEE 802.5 Token Ring networks.

Start monitoring vendor-neutral, standards-based MIB (RFC 1749), IEEE 802.5 Token Ring end-stations (source-route RIF binding status) 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.

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What Is TOKENRING-STATION-SR-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description