AT-TRIGGER-MIB

Description: Manages event trigger and threshold rules for automated SNMP notifications on Allied Telesis network devices.

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AT-TRIGGER-MIB is a proprietary Allied Telesis enterprise MIB module for the network switch/router management domain, defining objects that configure event-triggered rules and threshold-based actions. It exposes configuration data describing trigger conditions and the SNMP notifications or actions fired when those conditions are met, rather than raw performance counters themselves. Because trigger rules reference underlying system health indicators, this MIB is used to build automated monitoring workflows that watch hardware and software status — such as interface link state changes, counter threshold crossings, or environmental alarms — and generate proactive alerts without constant manual polling. It commonly works alongside standard MIBs like IF-MIB and SNMPv2-MIB (to identify monitored interfaces/objects) and Allied Telesis's own enterprise MIBs for device-specific counters. Typical deployment is on Allied Telesis managed switches and routers, where network operations staff define automated trigger-response rules to reduce reliance on manual SNMP polling. Engineers can download the AT-TRIGGER-MIB file directly to load it into their MIB browser.

The available source excerpt contains only the module identity description ('definitions of managed objects for the TRIGGER module') with no specific object or table names, so exact objects cannot be confirmed from this source. In practice, Allied Telesis trigger MIBs of this kind typically expose a trigger-definition table (rule index, monitored OID, threshold, comparison operator) and an action table specifying the notification to invoke. An administrator would configure a trigger tied to an interface error counter or CPU-utilization OID and rely on the resulting SNMP trap to catch a fault before it escalates.

Allied Telesis vendor-specific MIB for managing trigger modules on AlliedWare Plus devices; defines trigger configuration and activation objects.