ERICSSON-ROUTER-BRIDGE-MIB

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Organization: Ericsson AB.

Last Updated: 2015-01-14

Category: Technology: Bridging, Vendor: Ericsson

Description: Manages Layer 2 bridging domains, MAC forwarding tables, and bridge port configuration on Ericsson multi-service routers.

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What Is ERICSSON-ROUTER-BRIDGE-MIB?

ERICSSON-ROUTER-BRIDGE-MIB manages Layer 2 bridging on Ericsson multi-service routers (the SmartEdge/SE product line inherited from Redback Networks), defining objects to configure and monitor bridge groups, bridge circuits, and bridge port state. It belongs to the Layer-2 switching/bridging category within a broader routing platform, exposing bridge identity information, per-circuit descriptors and status, and port-state-change tracking. Its monitoring value centers on software/service status of bridging entities: eriRouterBridgeCircuitStatus indicates whether a bridge circuit is up, and eriRouterBridgePortPreviousState combined with the eriRouterBridgeCircuitStateEvent notification lets an operator detect and audit bridge port flaps or unexpected state transitions. It is closely related to, and presumably complements, standard bridge MIBs such as the IETF BRIDGE-MIB, while being an Ericsson-specific extension for its multi-service router bridging implementation. It is typically deployed on Ericsson/Redback-heritage multi-service edge routers used by service providers to deliver Layer 2 VPN and Ethernet aggregation services. Engineers can download the ERICSSON-ROUTER-BRIDGE-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in ERICSSON-ROUTER-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

Ericsson (Redback-heritage) multi-service edge routers

Monitoring Examples

An operator would poll eriRouterBridgeIdTable/eriRouterBridgeIdEntry to look up eriRouterBridgeName and eriRouterBridgeId for a given bridge group, then check eriRouterBridgePortCctDescrTable/eriRouterBridgePortCctDescrEntry entries via eriRouterBridgeCircuitDescriptor and eriRouterBridgeCircuitStatus to confirm a customer's bridge circuit is up. If eriRouterBridgePortPreviousState shows an unexpected transition and a corresponding eriRouterBridgeCircuitStateEvent notification fires, that flags a flapping circuit likely caused by a physical-layer or upstream provisioning issue.

What Can Be Monitored

bridge group name and identifier
bridge circuit status (up/down)
bridge port previous/current state
bridge circuit state-change events
circuit descriptor per bridge port

Imported Objects

From BRIDGE-MIB

dot1dBasePortEntry	OBJECT-TYPE
dot1dStpPortState

From ERICSSON-ROUTER-SMI

eriRouterMgmt

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
eriRouterBridgeMib	1.3.6.1.4.1.193.218.2.42			Defines the objects necessary to support the management of Bridge objects. Add eriRouterBridgeCircuitStateEvent notification along with the associated objects. Defined eriRouterBridgeNotifyObjectGroup and eriRouterBridgeNotifyGroup for compliance.
eriRouterBridgeNotifications	1.3.6.1.4.1.193.218.2.42.0
NTF eriRouterBridgeCctStateEvent	1.3.6.1.4.1.193.218.2.42.0.1			This notification signifies that a loop has been detected leading to the bridge circuit being blocked/cleared.
NTF eriRouterBridgeNewRootEvent	1.3.6.1.4.1.193.218.2.42.0.2			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 eriRouterBridgeTopologyChangeEvent	1.3.6.1.4.1.193.218.2.42.0.3			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.
eriRouterBridgeObjects	1.3.6.1.4.1.193.218.2.42.1
eriRouterBridgeNotify	1.3.6.1.4.1.193.218.2.42.1.1
T/F eriRouterBridgeNotifyEnable	1.3.6.1.4.1.193.218.2.42.1.1.1	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 eriRouterBridgeGroupName	1.3.6.1.4.1.193.218.2.42.1.1.2	SnmpAdminString	accessible-for-notify	Identifier for the bridge instance.
STR eriRouterBridgeCircuitDescriptor	1.3.6.1.4.1.193.218.2.42.1.1.3	SnmpAdminString	accessible-for-notify	A descriptor for identifying the Bridge circuit.
INT eriRouterBridgeCircuitStatus	1.3.6.1.4.1.193.218.2.42.1.1.4	INTEGER	accessible-for-notify	The status of the circuit in the Bridge if it is blocked/cleared based on loop detection.
STR eriRouterBridgeGroupContextName	1.3.6.1.4.1.193.218.2.42.1.1.5	SnmpAdminString	accessible-for-notify	The context in which the circuit is defined.
INT eriRouterBridgePortPreviousState	1.3.6.1.4.1.193.218.2.42.1.1.6	INTEGER	accessible-for-notify	This object contains the previous state of the same port as dot1dStpPortState in the same notification.
eriRouterBridgeBase	1.3.6.1.4.1.193.218.2.42.1.2
eriRouterBridgeIdTable	1.3.6.1.4.1.193.218.2.42.1.2.1		not-accessible	A table contains Bridge identifier.
eriRouterBridgeIdEntry	1.3.6.1.4.1.193.218.2.42.1.2.1.1		not-accessible	Bridge ID table entry.
STR eriRouterBridgeName	1.3.6.1.4.1.193.218.2.42.1.2.1.1.1	SnmpAdminString	not-accessible	The Bridge name. It is the same as eriRouterBridgeGroupName.
I32 eriRouterBridgeId	1.3.6.1.4.1.193.218.2.42.1.2.1.1.2	Integer32	read-only	The Bridge identifier referring to this Bridge.
eriRouterBridgePortCctDescrTable	1.3.6.1.4.1.193.218.2.42.1.2.2		not-accessible	A table contains Bridge port number and its circuit description.
eriRouterBridgePortCctDescrEntry	1.3.6.1.4.1.193.218.2.42.1.2.2.1		not-accessible	Bridge port circuit description table entry.
STR eriRouterBridgePortCctDescr	1.3.6.1.4.1.193.218.2.42.1.2.2.1.1	SnmpAdminString	read-only	The circuit description of this Bridge port.
eriRouterBridgeConformance	1.3.6.1.4.1.193.218.2.42.2
eriRouterBridgeCompliances	1.3.6.1.4.1.193.218.2.42.2.1
eriRouterBridgeCompliance	1.3.6.1.4.1.193.218.2.42.2.1.1			The compliance statement for SNMP entities which implement the Bridge MIB.
eriRouterBridgeCompliance2	1.3.6.1.4.1.193.218.2.42.2.1.2			The compliance statement for SNMP entities which implement the Bridge MIB.
eriRouterBridgeGroups	1.3.6.1.4.1.193.218.2.42.2.2
eriRouterBridgeNotifyObjectGroup	1.3.6.1.4.1.193.218.2.42.2.2.1			The collection of objects related to Bridge notifications.
eriRouterBridgeStateNotifyObjectGroup	1.3.6.1.4.1.193.218.2.42.2.2.2			The collection of objects related to Bridge notifications.
eriRouterBridgeNotifyGroup	1.3.6.1.4.1.193.218.2.42.2.2.3			Notification for tracking the bridge circuit blocked/cleared on detecting a loop.
eriRouterBridgeStateNotifyGroup	1.3.6.1.4.1.193.218.2.42.2.2.4			Notification for tracking the new root and topology changes in the bridge.
eriRouterBridgeBaseObjectGroup	1.3.6.1.4.1.193.218.2.42.2.2.5			The collection of objects related to Bridge base objects.

RFC description

Ericsson router bridge management for spanning tree topology, port state transitions, and circuit events.

Start monitoring Ericsson SmartEdge/SM/SSR router (Redback Networks heritage) (Layer 2 bridging/VPLS) 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 ERICSSON-ROUTER-BRIDGE-MIB

What Is ERICSSON-ROUTER-BRIDGE-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description