Nortel-Magellan-Passport-ApsMIB

MIB Reference — IPNetwork Monitor · Updated October 06, 2026

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Category: Optical Networking

Description: Manages Nortel Magellan Passport Automatic Protection Switching configuration and switchover state.

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What Is Nortel-Magellan-Passport-ApsMIB?

Nortel-Magellan-Passport-ApsMIB is a proprietary Nortel MIB module for the Magellan Passport family of wide-area packet/ATM switches, focused on Automatic Protection Switching (APS) functionality. It exposes configuration and status data organized as RowStatus-based provisioning tables, customer identifier records, and APS-specific test/switchover controls for redundant transmission facilities. Because APS exists specifically to detect and react to hardware line/facility failures, this MIB is central to monitoring the health of protection groups, tracking whether a working line has failed and whether traffic has switched over to a protection line, effectively surfacing hardware fault and failover status rather than CPU or memory metrics. It follows the common RowStatus/StorageType textual-convention pattern shared across the whole Magellan Passport MIB suite, and its APS concept parallels ITU-T/Bellcore protection-switching standards for transmission equipment. It is deployed on legacy Nortel Magellan Passport multiservice switches in carrier and enterprise WAN backbones where physical-layer redundancy must be tracked via SNMP. Network engineers evaluating or troubleshooting this functionality can download the Nortel-Magellan-Passport-ApsMIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in Nortel-Magellan-Passport-ApsMIB. 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 Magellan Passport WAN switch
  • ATM/packet multiservice switch

Monitoring Examples

An operator polls apsRowStatusTable/apsRowStatusEntry (indexed by apsIndex) to confirm an APS component is active and correctly provisioned, and queries apsProvTable/apsProvEntry for the configured working/protection pairing. apsCidDataTable/apsCidDataEntry with apsCustomerIdentifier lets the operator correlate a specific customer circuit to its APS group. If a facility fault triggers a switchover, the apsRowStatus and related apsTest objects reveal that traffic has moved to the protection line, prompting dispatch of a repair crew for the failed working facility.

What Can Be Monitored

  • APS row status
  • working/protection line switchover state
  • customer identifier per APS group
  • provisioning table entries
  • component storage type
Imported Objects

From Nortel-Magellan-Passport-StandardTextualConventionsMIB

Counter32
DisplayString
Integer32
PassportCounter64
RowStatus
StorageType
Unsigned32

From Nortel-Magellan-Passport-TextualConventionsMIB

AsciiString
FixedPoint1
Hex
Link
NonReplicated

From Nortel-Magellan-Passport-UsefulDefinitionsMIB

componentsOBJECT-IDENTITY
passportMIBsOBJECT-IDENTITY

From RFC-1212

OBJECT-TYPE
OIDs

RFC description

Nortel Magellan Passport platform MIB for automatic protection switching (APS); manages carrier-class optical network protection and failover.

Start monitoring Nortel Magellan 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-Magellan-Passport-ApsMIB