Nortel-Magellan-Passport-DcmeMIB

MIB Reference — IPNetwork Monitor · Updated October 06, 2026

All MIBs › Nortel-Magellan-Passport-DcmeMIB

Category: Telephony/VoIP

Description: Manages Nortel Magellan Passport Digital Circuit Multiplication Equipment configuration and compression.

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What Is Nortel-Magellan-Passport-DcmeMIB?

Nortel-Magellan-Passport-DcmeMIB is a component-level SNMP module for the Nortel (Northern Telecom) Magellan Passport multiservice WAN switching platform, covering the Digital Circuit Multiplication Equipment (DCME) feature used to compress voice and data channels onto shared WAN trunks. It exposes provisioning and operational-state data for each DCME component, including row status, storage type, component naming/indexing, preestablished connection counts, and trunk reservation management (TRM) thresholds. This lets an operator monitor whether a DCME compression component is active, provisioned, or faulted, and whether trunk bandwidth reservation is nearing its configured limit -- a direct read on the hardware/software health and loading of the compression subsystem. Like other Passport component MIBs it relies on the shared RowStatus/StorageType conventions from SNMPv2-TC and the Passport component-indexing model, so it is normally deployed alongside sibling Passport MIBs rather than in isolation. It is used on legacy Nortel Magellan Passport DPN/ATM/Frame Relay carrier WAN switches that carry compressed voice/data trunks in telecom backbone networks. Network engineers evaluating or troubleshooting this functionality can download the Nortel-Magellan-Passport-DcmeMIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in Nortel-Magellan-Passport-DcmeMIB. 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
  • Nortel Passport DPN multiservice switch

Monitoring Examples

An operator polls dcmeRowStatusTable and dcmeProvTable (keyed by dcmeIndex) to confirm a DCME compression component is provisioned and active, and checks dcmePreestablishedConnections to see how many pre-established channel connections are configured on it. Comparing live usage against dcmeTrmThreshold reveals when trunk reservation management is approaching its ceiling, an early warning of trunk congestion. dcmeComponentName and dcmeStorageType identify the component and whether its configuration persists across restarts.

What Can Be Monitored

  • DCME component row/operational status
  • preestablished connection count
  • trunk reservation management (TRM) threshold
  • component storage type
  • DCME profile configuration
Imported Objects

From Nortel-Magellan-Passport-StandardTextualConventionsMIB

Counter32
DisplayString
Gauge32
Integer32
PassportCounter64
RowPointer
RowStatus
StorageType
Unsigned32

From Nortel-Magellan-Passport-TextualConventionsMIB

AsciiString
DigitString
EnterpriseDateAndTime
FixedPoint1
Hex
Link
NonReplicated

From Nortel-Magellan-Passport-UsefulDefinitionsMIB

componentsOBJECT-IDENTITY
passportMIBsOBJECT-IDENTITY

From RFC-1212

OBJECT-TYPE
OIDs

RFC description

Nortel Magellan Passport MIB for data communications equipment (DCE) monitoring and management, part of Nortel's infrastructure for network device management and status reporting.

Start monitoring Nortel Magellan Passport / Passport DPN multiservice switch (DCME voice compression) 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-DcmeMIB