RBN-ICR-MIB

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Organization: Ericsson AB.

Last Updated: 2011-01-10

Category: Protection and Redundancy, Vendor: Ericsson

Description: Manages inter-chassis redundancy (ICR) configuration and failover state for Ericsson SmartEdge BRAS pairs.

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What Is RBN-ICR-MIB?

RBN-ICR-MIB is a Redback Networks/Ericsson SmartEdge enterprise MIB for managing Inter-Chassis Resilience (ICR) — a high-availability pairing scheme where two SmartEdge BRAS chassis synchronize state so one can take over if the other fails. It exposes a table of ICR peer relationships identifying each pairing by local and peer IP address/port, priority, keepalive interval, and hold time, along with notifications and conformance groupings. Its central monitoring purpose is failover/redundancy health: the keepalive interval and hold-time settings, together with associated notifications, indicate whether the ICR peer link is alive and whether a failover has occurred, making this MIB directly useful for detecting an unplanned chassis switchover or a lost redundancy link. It depends on basic IP transport (the peer/local address and port objects) rather than another SNMP standard, and complements chassis-level hardware-status MIBs by covering the resilience/failover software layer specifically. It is deployed in pairs of Redback/Ericsson SmartEdge BRAS routers configured for high-availability subscriber-edge service. Engineers can download the RBN-ICR-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in RBN-ICR-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 (Ericsson) BRAS router pair configured for high availability

Monitoring Examples

An operator polls rbnIcrTable/rbnIcrEntry to check rbnIcrPriority and rbnIcrKeepAliveInterval/rbnIcrHoldTime for each rbnIcrId, and watches for rbnIcrNotifications traps indicating that the peer at rbnIcrPeerAddress has stopped responding within the hold time, signaling a possible failover to the standby chassis. Comparing rbnIcrLocalAddress/rbnIcrLocalPort and rbnIcrPeerAddress/rbnIcrPeerPort across both chassis confirms the ICR pairing is correctly configured before relying on it for redundancy.

What Can Be Monitored

ICR peer pairing configuration
keepalive interval and hold time
ICR priority
peer reachability/failover notifications

Imported Objects

From INET-ADDRESS-MIB

InetAddress
InetAddressType
InetPortNumber

From RBN-SMI

rbnMgmt

OBJECT-IDENTITY

From SNMPv2-CONF

MODULE-COMPLIANCE
NOTIFICATION-GROUP
OBJECT-GROUP

From SNMPv2-SMI

Integer32
MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE

From SNMPv2-TC

RowStatus

OIDs

OID symbolic	OID numeric	Type	Access	Description
rbnIcrMIB	1.3.6.1.4.1.2352.2.101			This MIB describes objects used for managing Inter Chassis Resilience(ICR).
rbnIcrNotifications	1.3.6.1.4.1.2352.2.101.0
NTF rbnIcrNewActive	1.3.6.1.4.1.2352.2.101.0.1			This notification is sent when the state of the ICR node has changed to active.
NTF rbnIcrNewStandby	1.3.6.1.4.1.2352.2.101.0.2			This notification is sent when the state of the ICR node has changed to standby.
NTF rbnIcrNewPendingStandby	1.3.6.1.4.1.2352.2.101.0.3			This notification is sent when the state of the ICR node has changed to pendingStandby.
NTF rbnIcrInconsistency	1.3.6.1.4.1.2352.2.101.0.4			This notification is sent when an ICR inconsistency error is encountered.
rbnIcrMIBObjects	1.3.6.1.4.1.2352.2.101.1
rbnIcrTable	1.3.6.1.4.1.2352.2.101.1.1		not-accessible	This table consists of ICR management objects.
rbnIcrEntry	1.3.6.1.4.1.2352.2.101.1.1.1		not-accessible	Each entry contains management objects of an ICR node.
I32 rbnIcrId	1.3.6.1.4.1.2352.2.101.1.1.1.1	Integer32	not-accessible	The unique identifier of the ICR node.
IPt rbnIcrLocalAddressType	1.3.6.1.4.1.2352.2.101.1.1.1.2	InetAddressType	read-create	This object indicates the type of 'rbnIcrLocalAddress'.
IP rbnIcrLocalAddress	1.3.6.1.4.1.2352.2.101.1.1.1.3	InetAddress	read-create	This object indicates the local address used to send/receive ICR messages. The type of the address is determined by the corresponding 'rbnIcrLocalAddressType'.
INE rbnIcrLocalPort	1.3.6.1.4.1.2352.2.101.1.1.1.4	InetPortNumber	read-create	This object indicates the local port number used to send/receive ICR messages.
IPt rbnIcrPeerAddressType	1.3.6.1.4.1.2352.2.101.1.1.1.5	InetAddressType	read-create	This object indicates the type of 'rbnIcrPeerAddress'.
IP rbnIcrPeerAddress	1.3.6.1.4.1.2352.2.101.1.1.1.6	InetAddress	read-create	This object indicates the address used by the peer ICR node to send/receive ICR messages. The type of the address is determined by the corresponding 'rbnIcrPeerAddressType'.
INE rbnIcrPeerPort	1.3.6.1.4.1.2352.2.101.1.1.1.7	InetPortNumber	read-create	This object indicates the port number used by the peer ICR node to send/receive ICR messages.
INT rbnIcrPriority	1.3.6.1.4.1.2352.2.101.1.1.1.8	INTEGER	read-create	This object indicates the ICR priority. The priority is used for setting the initial preference level when the prefixes are advertised and is used for tie-break in case both the local ICR node and its peer node are booted up at the same time. The local and the peer ICR nodes MUST configure different priorities
I32 rbnIcrKeepAliveInterval	1.3.6.1.4.1.2352.2.101.1.1.1.9	Integer32	read-create	This object indicates the interval that the node sends ICR keep alive messages to its peer node.
I32 rbnIcrHoldTime	1.3.6.1.4.1.2352.2.101.1.1.1.10	Integer32	read-create	This object indicates the time, after which, if the node has not received a ICR keep alive message from its peer node, it declares the peer loss.
INT rbnIcrState	1.3.6.1.4.1.2352.2.101.1.1.1.11	INTEGER	read-only	The current ICR state: - 'initialize', which indicates that the node is in the process of deciding its role(active or standby). - 'active', which indicates that the node operates as ICR active node. - 'standby', which indicates that the node operates as ICR standby node. - 'pendingStandby', which indicates that the node(previously in 'active' state) is waiting for operator intervention to transit to 'standby' state after ICR switchover.
INT rbnIcrAdminStatus	1.3.6.1.4.1.2352.2.101.1.1.1.12	INTEGER	read-create	This object controls ICR node. Setting this object to 'up' will enable the ICR node. The node will transition from 'initialize' state to 'active' or 'standby' state depending on the value of 'rbnIcrPriority'. Setting this object to 'down' will disable the ICR node. The node will transition from its current state to 'initialize'. To modify other 'read-create' objects in the conceptual row, the 'rbnIcrAdminStatus' object must be set to 'down'. The value of the 'rbnIcrRowStatus' object must be 'active' in order for this object to be set to 'up'.
ROW rbnIcrRowStatus	1.3.6.1.4.1.2352.2.101.1.1.1.13	RowStatus	read-create	The object is used to create and delete 'rbnIcrEntry' conceptual rows. Except 'rbnIcrAdminStatus', 'read-create' objects in the conceptual row cannot be modified when rbnIcrRowStatus is set to active(1). To change 'rbnIcrRowStatus' from 'active' to a different value, the 'rbnIcrAdminStatus' object must be 'down'. To create a row in this table, 'rbnIcrRowStatus' could be set to either 'createAndGo(4)' or 'createAndWait(5)'. Until all objects in the conceptual row are appropriately configured, 'rbnIcrRowStatus' will transit to 'notReady(3)'.
INT rbnIcrInconsistencyError	1.3.6.1.4.1.2352.2.101.1.2	INTEGER	accessible-for-notify	This object indicates the ICR inconsistency error code.
rbnIcrMIBConformance	1.3.6.1.4.1.2352.2.101.2
rbnIcrMIBCompliances	1.3.6.1.4.1.2352.2.101.2.1
rbnIcrMIBCompliance	1.3.6.1.4.1.2352.2.101.2.1.1			The compliance statement for ICR MIB implementations.
rbnIcrMIBGroups	1.3.6.1.4.1.2352.2.101.2.2
rbnIcrGroup	1.3.6.1.4.1.2352.2.101.2.2.1			Conformance group for ICR objects.
rbnIcrNotificationObjectGroup	1.3.6.1.4.1.2352.2.101.2.2.2			Conformance group for objects contained in ICR notifications.
rbnIcrNotificationGroup	1.3.6.1.4.1.2352.2.101.2.2.3			Conformance group for ICR notifications.

RFC description

Inter-Chassis Resilience (ICR) management for redundant Ericsson systems, including peer discovery and communication configuration.

Start monitoring Redback/Ericsson SmartEdge BRAS router pair (Inter-Chassis Resilience high-availability) 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-ICR-MIB

What Is RBN-ICR-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description