DECATM-MIB

MIB Reference — IPNetwork Monitor · Updated September 09, 2026

All MIBsDECATM-MIB

Category: ATM, Vendor: DEC/Digital

Description: Tracks operation, connections, and performance statistics for DEC ATM switches.

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What Is DECATM-MIB?

DECATM-MIB is a Digital Equipment Corporation (DEC) vendor module for managing ATM switch hardware, covering switch-level identity, port inventory, and connection/virtual-circuit handling. It exposes objects describing switch and port counts, ATM-specific capabilities like escape support and flow-mastering, and per-port type/subtype configuration. Its monitoring value is in tracking the operational hardware status of ATM ports and connections — how many ports exist, what type each is, and which switch element is acting as flow master — useful for detecting misconfigured or failed ATM interfaces on legacy DEC ATM gear. It follows the conventions of the DEC private enterprise MIB tree and complements the standard ATM-MIB (RFC 1695) rather than replacing it. It would be deployed on legacy DEC ATM switching equipment in older enterprise or carrier backbone networks, and loading DECATM-MIB in a MIB Browser exposes the switch/port inventory and per-port type/subtype objects described above for direct polling on that legacy DEC ATM hardware.

IPNetwork Monitor allows you to monitor SNMP objects defined in DECATM-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

  • DEC (Digital Equipment Corporation) ATM switch

Monitoring Examples

An admin would poll adPortTable/adPortTableEntry, keyed by adpPortIndex, to check adpType and adpSubType for each ATM port and compare the count against adNumPorts to confirm all expected ports are enumerated. A mismatch, or a change in which unit reports adFlowMaster, would reveal a failed port card or an unexpected flow-master failover on the ATM switch.

What Can Be Monitored

  • total ATM port count
  • per-port type and subtype
  • flow master/escape support status
  • restricted virtual circuit (RVC) configuration
Imported Objects

From RFC-1212

OBJECT-TYPE

From RFC1155-SMI

enterprises
OIDs

RFC description

Manages DEC ATM switch operation, connections, and performance statistics.

Start monitoring DEC (Digital Equipment Corporation) ATM switch (legacy) 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 DECATM-MIB