RBN-BRIDGE-MIB

All MIBs › RBN-BRIDGE-MIB

Organization: Redback Networks, Inc.

Last Updated: 2008-08-27

Category: Vendor: Ericsson

Description: Manages bridge domain configuration and MAC forwarding on Redback SmartEdge routers.

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What Is RBN-BRIDGE-MIB?

RBN-BRIDGE-MIB is a vendor-specific module for Redback SmartEdge routers that manages bridge domain configuration and MAC-layer forwarding, including bridge group naming, per-circuit bridge port status, and bridge ID assignment. It exposes tables mapping bridge groups to circuit descriptors and port states, plus notifications for bridge circuit state changes. Its monitoring value centers on layer-2 fault and status detection: the rbnBridgeCircuitStateEvent notification, together with rbnBridgeCircuitStatus and rbnBridgePortPreviousState, reveals when a bridged circuit/port transitions (e.g., goes down or changes forwarding state), which is the primary hardware/software fault signal this MIB provides for bridge domains. It builds on standard bridge/MAC forwarding concepts (conceptually related to the IETF BRIDGE-MIB) though implemented as a Redback-specific enterprise module. It is typically deployed on Redback SmartEdge routers providing Ethernet bridging/VPLS-style services in metro and access networks. Engineers can download the RBN-BRIDGE-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in RBN-BRIDGE-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

Redback SmartEdge router

Monitoring Examples

An administrator would subscribe to rbnBridgeCircuitStateEvent and check rbnBridgeCircuitStatus per rbnBridgeCircuitDescriptor to detect when a bridged circuit transitions to a down or degraded state. rbnBridgePortPreviousState would be inspected to understand the port's state immediately before the change, aiding root-cause analysis of a bridge domain flap. rbnBridgeIdTable/rbnBridgeIdEntry (rbnBridgeName, rbnBridgeId) would be checked to confirm bridge group naming and ID assignment are correct, and rbnBridgePortCctDescrTable/rbnBridgePortCctDescrEntry to verify which circuits belong to which bridge port.

What Can Be Monitored

bridge circuit port status
bridge circuit state-change notifications
bridge group to circuit mapping
bridge ID assignment
previous port state history

Imported Objects

From BRIDGE-MIB

dot1dBasePortEntry	OBJECT-TYPE
dot1dStpPortState

From RBN-SMI

rbnMgmt

OBJECT-IDENTITY

From SNMP-FRAMEWORK-MIB

SnmpAdminString

From SNMPv2-CONF

MODULE-COMPLIANCE
NOTIFICATION-GROUP
OBJECT-GROUP

From SNMPv2-SMI

Integer32
MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE

From SNMPv2-TC

TruthValue

OIDs

OID symbolic	OID numeric	Type	Access	Description
rbnBridgeMib	1.3.6.1.4.1.2352.2.42			Defines the objects necessary to support the management of Bridge objects. Add rbnBridgeCircuitStateEvent notification along with the associated objects. Defined rbnBridgeNotifyObjectGroup and rbnBridgeNotifyGroup for compliance.
rbnBridgeNotifications	1.3.6.1.4.1.2352.2.42.0
NTF rbnBridgeCctStateEvent	1.3.6.1.4.1.2352.2.42.0.1			This notification signifies that a loop has been detected leading to the bridge circuit being blocked/cleared.
NTF rbnBridgeNewRootEvent	1.3.6.1.4.1.2352.2.42.0.2			This notification indicates that the sending agent has become the new root of the Spanning Tree; the trap is sent by a bridge soon after its election as the new root.
NTF rbnBridgeTopologyChangeEvent	1.3.6.1.4.1.2352.2.42.0.3			This notification is sent by a bridge when any of its configured ports transitions from the Learning state to the Forwarding state, or from the Forwarding state to the Blocking state.
rbnBridgeObjects	1.3.6.1.4.1.2352.2.42.1
rbnBridgeNotify	1.3.6.1.4.1.2352.2.42.1.1
T/F rbnBridgeNotifyEnable	1.3.6.1.4.1.2352.2.42.1.1.1	TruthValue	read-write	This object will provide a mechanism for enabling and disabling bridge circuit state notifications. A value of 1 (true) indicates that bridge circuit state notifications are enabled. A value of 2 (false) indicates that bridge circuit state notifications are disabled.
STR rbnBridgeGroupName	1.3.6.1.4.1.2352.2.42.1.1.2	SnmpAdminString	accessible-for-notify	Identifier for the bridge instance.
STR rbnBridgeCircuitDescriptor	1.3.6.1.4.1.2352.2.42.1.1.3	SnmpAdminString	accessible-for-notify	A descriptor for identifying the Bridge circuit.
INT rbnBridgeCircuitStatus	1.3.6.1.4.1.2352.2.42.1.1.4	INTEGER	accessible-for-notify	The status of the circuit in the Bridge if it is blocked/cleared based on loop detection.
STR rbnBridgeGroupContextName	1.3.6.1.4.1.2352.2.42.1.1.5	SnmpAdminString	accessible-for-notify	The context in which the circuit is defined.
INT rbnBridgePortPreviousState	1.3.6.1.4.1.2352.2.42.1.1.6	INTEGER	accessible-for-notify	This object contains the previous state of the same port as dot1dStpPortState in the same notification.
rbnBridgeBase	1.3.6.1.4.1.2352.2.42.1.2
rbnBridgeIdTable	1.3.6.1.4.1.2352.2.42.1.2.1		not-accessible	A table contains Bridge identifier.
rbnBridgeIdEntry	1.3.6.1.4.1.2352.2.42.1.2.1.1		not-accessible	Bridge ID table entry.
STR rbnBridgeName	1.3.6.1.4.1.2352.2.42.1.2.1.1.1	SnmpAdminString	not-accessible	The Bridge name. It is the same as rbnBridgeGroupName.
I32 rbnBridgeId	1.3.6.1.4.1.2352.2.42.1.2.1.1.2	Integer32	read-only	The Bridge identifier referring to this Bridge.
rbnBridgePortCctDescrTable	1.3.6.1.4.1.2352.2.42.1.2.2		not-accessible	A table contains Bridge port number and its circuit description.
rbnBridgePortCctDescrEntry	1.3.6.1.4.1.2352.2.42.1.2.2.1		not-accessible	Bridge port circuit description table entry.
STR rbnBridgePortCctDescr	1.3.6.1.4.1.2352.2.42.1.2.2.1.1	SnmpAdminString	read-only	The circuit description of this Bridge port.
rbnBridgeConformance	1.3.6.1.4.1.2352.2.42.2
rbnBridgeCompliances	1.3.6.1.4.1.2352.2.42.2.1
rbnBridgeCompliance	1.3.6.1.4.1.2352.2.42.2.1.1			The compliance statement for SNMP entities which implement the Redback Bridge MIB.
rbnBridgeCompliance2	1.3.6.1.4.1.2352.2.42.2.1.2			The compliance statement for SNMP entities which implement the Redback Bridge MIB.
rbnBridgeGroups	1.3.6.1.4.1.2352.2.42.2.2
rbnBridgeNotifyObjectGroup	1.3.6.1.4.1.2352.2.42.2.2.1			The collection of objects related to Bridge notifications.
rbnBridgeStateNotifyObjectGroup	1.3.6.1.4.1.2352.2.42.2.2.2			The collection of objects related to Bridge notifications.
rbnBridgeNotifyGroup	1.3.6.1.4.1.2352.2.42.2.2.3			Notification for tracking the bridge circuit blocked/cleared on detecting a loop.
rbnBridgeStateNotifyGroup	1.3.6.1.4.1.2352.2.42.2.2.4			Notification for tracking the new root and topology changes in the bridge.
rbnBridgeBaseObjectGroup	1.3.6.1.4.1.2352.2.42.2.2.5			The collection of objects related to Bridge base objects.

RFC description

Bridge management objects for monitoring spanning tree port state changes, topology events, and bridge circuit states.

Start monitoring Redback SmartEdge router (bridge domain/MAC forwarding management) 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 RBN-BRIDGE-MIB

What Is RBN-BRIDGE-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description