A3COM0024-EVENT-EXTENSION

MIB Reference — IPNetwork Monitor · Updated October 05, 2026

All MIBs › A3COM0024-EVENT-EXTENSION

Category: SNMP Framework

Description: Extends RMON event and alarm objects for 3Com device-specific notification handling.

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What Is A3COM0024-EVENT-EXTENSION?

This MIB extends the standard RMON event and alarm MIB with 3Com-specific event-action objects, adding vendor-defined behavior when an RMON alarm fires. It exposes an extended event table with an eventAction object specifying what the device should do (beyond the standard log/trap actions) when a monitored alarm condition triggers. Its monitoring role is indirect: it doesn't expose new hardware counters itself, but rather governs how the device responds to threshold-crossing events already being monitored via RMON alarms/statistics on interface or other performance counters. It directly depends on and extends the IETF RMON MIB (RFC 2819) event/alarm mechanism, requiring RMON to already be configured and running. It's deployed on 3Com switches/routers that support RMON-based threshold alerting. Engineers can download the A3COM0024-EVENT-EXTENSION file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in A3COM0024-EVENT-EXTENSION. 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

  • 3Com switches/routers with RMON support

Monitoring Examples

An admin configuring an RMON alarm on an interface error counter would set extEventTable's eventAction for the corresponding extEventEntry to define the vendor-specific response beyond a standard SNMP trap, then verify via the same table that the intended action is correctly bound to that RMON event, ensuring the device reacts appropriately (not just logs) when the threshold is crossed.

What Can Be Monitored

  • RMON event extended action configuration
Imported Objects

From A3COM0027-RMON-EXTENSIONS

eventExtensionsOBJECT-IDENTITY

From RFC-1212

OBJECT-TYPE

From RFC-1215

TRAP-TYPE

From RMON-MIB

DisplayString
eventDescriptionOBJECT-TYPE
eventIndexOBJECT-TYPE
OIDs

RFC description

Extends RMON event functionality with custom event generation and configuration capabilities for 3Com devices.

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Download A3COM0024-EVENT-EXTENSION