ERICSSON-ROUTER-MC-LAG-MIB

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Organization: Ericsson AB.

Last Updated: 2016-04-11

Category: Technology: High Availability, Technology: Link Aggregation, Vendor: Ericsson

Description: Manages Multi-Chassis Link Aggregation Group configuration and redundancy state across Ericsson router chassis.

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What Is ERICSSON-ROUTER-MC-LAG-MIB?

ERICSSON-ROUTER-MC-LAG-MIB is an Ericsson vendor MIB (renamed from an earlier LAG-MIB) that manages Multi-Chassis Link Aggregation Group configuration and redundancy across pairs of Ericsson SmartEdge/SM/SSR router chassis. It exposes per-MC-LAG objects describing the aggregation group's identity, system priority, system MAC address, revertive failover mode/timer, and current operational state. This MIB is squarely about monitoring the hardware/software redundancy status of a chassis pair: operational state and error codes reveal whether an MC-LAG is actively forwarding correctly, while switchover time and switchover reason objects log when and why a failover between chassis occurred. It builds on standard link aggregation concepts (IEEE 802.3ad/802.1AX LACP) extended by Ericsson to span multiple chassis. It is deployed in high-availability network cores where two Ericsson router chassis are paired for redundant uplinks and must fail over transparently on a chassis or link failure. Engineers can download the ERICSSON-ROUTER-MC-LAG-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in ERICSSON-ROUTER-MC-LAG-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 SmartEdge (SE) Multi-service Edge Router
Ericsson SM Metro Ethernet platform
Ericsson Smart Service Router (SSR)

Monitoring Examples

An operator would poll eriRouterMcLagTable/eriRouterMcLagEntry using eriRouterMcLagName and eriRouterMcLagId to identify a specific aggregation group, then check eriRouterMcLagOperState and eriRouterMcLagOperErrorCode to confirm the group is fully up rather than degraded on one chassis. eriRouterMcLagSwitchOverTime and eriRouterMcLagSwitchOverReason are reviewed after an alert to determine whether a recent failover was caused by a link failure, chassis reboot, or manual switchover, and eriRouterMcLagRevertiveMode/eriRouterMcLagRevertiveHoldTimer are checked to confirm the group will (or won't) revert automatically once the primary chassis recovers.

What Can Be Monitored

MC-LAG operational state
switchover time and reason
revertive mode and hold timer
system priority and MAC address
aggregation error codes

Imported Objects

From ERICSSON-ROUTER-SMI

eriRouterMgmt

OBJECT-IDENTITY

From ERICSSON-ROUTER-TC

EriRouterPort
EriRouterSlot

From IF-MIB

InterfaceIndex

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

DateAndTime
MacAddress
TruthValue

OIDs

OID symbolic	OID numeric	Type	Access	Description
eriRouterMcLagMIB	1.3.6.1.4.1.193.218.2.102			Creating new file with same renamed contents from ERICSSON-ROUTER-LAG-MIB.my. Renaming: Lag to McLag.
eriRouterMcLagNotifications	1.3.6.1.4.1.193.218.2.102.0
NTF eriRouterMcLagSwitchOverEvent	1.3.6.1.4.1.193.218.2.102.0.1			An MC-LAG switch-over trap indicates that a switch-over has happened and also it identifies which LAG will become active LAG.
NTF eriRouterMcLagOperFailed	1.3.6.1.4.1.193.218.2.102.0.2			This trap indicates an MC-LAG has failed and why.
NTF eriRouterMcLagOperFailureCleared	1.3.6.1.4.1.193.218.2.102.0.3			This trap indicates an MC-LAG has recovered from a failure.
NTF eriRouterMcLagConstituentPortUp	1.3.6.1.4.1.193.218.2.102.0.4			This trap indicates whether LACP on a constituent link is active in a LAG of an MC-LAG.
NTF eriRouterMcLagConstituentPortDown	1.3.6.1.4.1.193.218.2.102.0.5			This trap indicates whether LACP on a constituent link has failed in a LAG of an MC-LAG.
eriRouterMcLagObjects	1.3.6.1.4.1.193.218.2.102.1
eriRouterMcLagTable	1.3.6.1.4.1.193.218.2.102.1.1		not-accessible	This table consists of MC-LAG management objects.
eriRouterMcLagEntry	1.3.6.1.4.1.193.218.2.102.1.1.1		not-accessible	Each entry contains management objects of an MC-LAG node.
STR eriRouterMcLagName	1.3.6.1.4.1.193.218.2.102.1.1.1.1	SnmpAdminString	not-accessible	This string name uniquely identifies an MC-LAG within an MC-LAG cluster. Within an MC-LAG cluster, there could not be two LAG with the same name on the same chassis. The MC-LAGs with the same name on different chassis are peer to each other.
I32 eriRouterMcLagId	1.3.6.1.4.1.193.218.2.102.1.1.1.2	Integer32	read-only	The identifier is assigned to a LAG on individual chassis at the time of LAG configuration. This identifier could be different between LAG in the same MC-LAG. There is no coordination between the two id manager on the two chassis in assigning the LAG ID on different chassis.
I32 eriRouterMcLagSystemPriority	1.3.6.1.4.1.193.218.2.102.1.1.1.3	Integer32	read-only	This is a configurable value. The system priority will form part of the link-group system id. System priority priority will occupy the last 32 bit of the system-id.
MAC eriRouterMcLagSystemMacAddress	1.3.6.1.4.1.193.218.2.102.1.1.1.4	MacAddress	read-only	The .
T/F eriRouterMcLagRevertiveMode	1.3.6.1.4.1.193.218.2.102.1.1.1.5	TruthValue	read-only	This boolean value indicates whether revertive mode is set for an MC-LAG. If revertive mode is set, the LAG with higher priority starts the revertive process once it recovers from some failures to a state where it has regained capacity to take over as the active LAG of an MC-LAG.
I32 eriRouterMcLagRevertiveHoldTimer	1.3.6.1.4.1.193.218.2.102.1.1.1.6	Integer32	read-only	This is a configurable value in revertive mode. If this value is configured, the LAG with higher priority will hold off for the seconds configured by the value before starting the revertive procedure.
INT eriRouterMcLagOperState	1.3.6.1.4.1.193.218.2.102.1.1.1.7	INTEGER	read-only	The current MC-LAG state: Up - When the MC-LAG is active on one of the two chassis. In this state, the traffic are flowing through the active LAG. Down - When the MC-LAG is down, the LAG is not in a position to take over as active LAG of an MC-LAG. Standby - When the MC-LAG is standby, the LAG is ready to take over as the active LAG fails.
INT eriRouterMcLagOperErrorCode	1.3.6.1.4.1.193.218.2.102.1.1.1.8	INTEGER	read-only	The reason that MC-LAG is Down. configMismatch - MC-LAG is down because LAG related configuration is not the same between the two LAGs in an MC-LAG. priorityError - MC-LAG is down because the configured port priority values between the two LAGs of an MC-LAG are ambiguous as to which LAG is higher in priority. downMinLink - MC-LAG is down because the LAG doesn't have enough links that are up to satisfy the configured minimum link requirement.
DAT eriRouterMcLagSwitchOverTime	1.3.6.1.4.1.193.218.2.102.1.1.1.9	DateAndTime	read-only	This indicated the last time MC-LAG was switched-over.
STR eriRouterMcLagSwitchOverReason	1.3.6.1.4.1.193.218.2.102.1.1.1.10	SnmpAdminString	read-only	This indicate in text the reason for MC-LAG switchover.
eriRouterMcLagConstituentTable	1.3.6.1.4.1.193.218.2.102.1.2		not-accessible	This is a table of constituent links for a LAG
eriRouterMcLagConstituentEntry	1.3.6.1.4.1.193.218.2.102.1.2.1		not-accessible	A constituent link of an MCLAG. A constituent link is uniquely identified by a slot, port, and port priority.
STR eriRouterMcLagConstituentName	1.3.6.1.4.1.193.218.2.102.1.2.1.1	SnmpAdminString	not-accessible	This string name uniquely identifies an MC-LAG within an MC-LAG cluster. Within an MC-LAG cluster, there could not be two LAG with the same name on the same chassis. The MC-LAGs with the same name on different chassis are peer to each other.
ERI eriRouterMcLagConstituentSlot	1.3.6.1.4.1.193.218.2.102.1.2.1.2	EriRouterSlot	not-accessible	This indicates the slot number of the constituent link.
ERI eriRouterMcLagConstituentPort	1.3.6.1.4.1.193.218.2.102.1.2.1.3	EriRouterPort	not-accessible	This indicates the port number of the constituent link.
I32 eriRouterMcLagConstituentPortPriority	1.3.6.1.4.1.193.218.2.102.1.2.1.4	Integer32	read-only	This indicates the configured priority of the constituent link.
NUM eriRouterMcLagConstituentPortIfIndex	1.3.6.1.4.1.193.218.2.102.1.2.1.5	InterfaceIndex	read-only	The hardware interface index associated with the constituent link.
INT eriRouterMcLagConstituentLACPErrorCode	1.3.6.1.4.1.193.218.2.102.1.2.1.6	INTEGER	read-only	The reason LACP on a constituent is down. portFailure - LACP is down because the consitutent port is down. ccmFailure - LACP is down because the ccm is down. bfdFailure - LACP is down because bfd is down.
eriRouterMcLagConformance	1.3.6.1.4.1.193.218.2.102.2
eriRouterMcLagGroups	1.3.6.1.4.1.193.218.2.102.2.1
eriRouterMcLagObjectGroup	1.3.6.1.4.1.193.218.2.102.2.1.1			Collection of scalar objects required for Multi-chassis Link-group management.
eriRouterMcLagNotificationGroup	1.3.6.1.4.1.193.218.2.102.2.1.2			Objects required for Multi-chassis Link-group notifications.
eriRouterMcLagCompliances	1.3.6.1.4.1.193.218.2.102.2.2
eriRouterMcLagModuleCompliance	1.3.6.1.4.1.193.218.2.102.2.2.1			Compliance statement for agents that provide support for the ERICSSON-ROUTER-LAG-MIB

RFC description

Monitors Multi-Chassis Link Aggregation Group (MC-LAG) configuration and state changes on Ericsson routers.

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Download ERICSSON-ROUTER-MC-LAG-MIB

What Is ERICSSON-ROUTER-MC-LAG-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description