Nortel-MsCarrier-MscPassport-ImaMIB

MIB Reference — IPNetwork Monitor · Updated October 06, 2026

All MIBs › Nortel-MsCarrier-MscPassport-ImaMIB

Category: ATM Networking, Nortel MsCarrier MscPassport

Description: Defines SNMP objects for Inverse Multiplexing over ATM (IMA) group configuration on Nortel MsCarrier MscPassport switches.

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What Is Nortel-MsCarrier-MscPassport-ImaMIB?

Nortel-MsCarrier-MscPassport-ImaMIB defines SNMP objects for Inverse Multiplexing over ATM (IMA) group configuration on Nortel MsCarrier MscPassport switches over DS3 facilities, bonding multiple physical DS3-based links into one logical high-bandwidth ATM link. It exposes RowStatus provisioning tables for IMA group components along with link selection criteria, maximum differential delay, and link retry timeout configuration, mirroring the equivalent Magellan Passport IMA MIB. These objects give direct visibility into bonded-link hardware health, since a member link whose differential delay approaches mscLpDS3ImaMaxDiffDelay or that repeatedly hits its retry timeout signals a failing physical DS3 link within the group. It shares the RowStatus/component conventions of the MsCarrier MscPassport MIB suite and implements the ATM Forum IMA specification. It is deployed on MscPassport switches in mobile carrier backbone networks, where Nortel-MsCarrier-MscPassport-ImaMIB SNMP monitoring tracks DS3 links bonded via IMA for added capacity.

IPNetwork Monitor allows you to monitor SNMP objects defined in Nortel-MsCarrier-MscPassport-ImaMIB. 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

  • Nortel MsCarrier Passport switch (DS3 IMA bonded links)

Monitoring Examples

An operator reviews mscLpDS3ImaProvTable/mscLpDS3ImaProvEntry to check the configured mscLpDS3ImaLinkSelectionCriterion, mscLpDS3ImaMaxDiffDelay, and mscLpDS3ImaLinkRetryTimeout for an IMA group (mscLpDS3ImaIndex). A member link consistently exceeding the retry timeout or differential delay threshold points to a specific failing DS3 facility, which mscLpDS3ImaTest diagnostic objects can help confirm, while mscLpDS3ImaRowStatusTable/mscLpDS3ImaRowStatusEntry verifies the group component remains active overall.

What Can Be Monitored

  • IMA group row status
  • link selection criterion
  • maximum differential delay
  • link retry timeout
  • storage type
Imported Objects

From Nortel-MsCarrier-MscPassport-LogicalProcessorMIB

mscLpOBJECT-IDENTITY
mscLpDS3OBJECT-IDENTITY
mscLpDS3IndexOBJECT-TYPE
mscLpIndexOBJECT-TYPE

From Nortel-MsCarrier-MscPassport-StandardTextualConventionsMIB

Counter32
DisplayString
Gauge32
Integer32
RowStatus
StorageType
Unsigned32

From Nortel-MsCarrier-MscPassport-TextualConventionsMIB

AsciiString
Hex
Link
NonReplicated
PassportCounter64

From Nortel-MsCarrier-MscPassport-UsefulDefinitionsMIB

mscPassportMIBsOBJECT-IDENTITY

From RFC-1212

OBJECT-TYPE
OIDs

RFC description

Manages inverse multiplexing for ATM (IMA) groups on Nortel carrier network systems.

Start monitoring Nortel MsCarrier Passport switches 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 Nortel-MsCarrier-MscPassport-ImaMIB