ERICSSON-ROUTER-SLA-MIB

Description: Manages SLA probes measuring latency, jitter, and packet loss for service level assurance on Ericsson routers.

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ERICSSON-ROUTER-SLA-MIB is an Ericsson vendor-specific MIB that defines objects and notifications for service level agreement (SLA) threshold monitoring on Ericsson router platforms, layered on top of TWAMP-based active measurement jobs. Its single eriRouterSlaReactionTable, indexed by job ID, monitored element, and threshold type, tracks which SLA measurement job is being watched (eriRouterSlaJobID), which metric is being checked -- near-end, far-end, or two-way delay, delay variation, or packet loss (eriRouterSlaMonitoredElement) -- and whether the configured threshold is currently violated (eriRouterSlaReactionStatus). Rather than carrying raw measurement data itself, the MIB is purely a reaction/alerting layer: it fires one of eighteen paired rising/falling NOTIFICATION-TYPE traps (for example eriRouterSlaNearEndDelayRisingThresholdMet and its falling counterpart) whenever a job's delay, jitter, or loss threshold is crossed in either direction. It depends on the eriRouterMgmt/ERICSSON-ROUTER-SMI enterprise tree and on the underlying TWAMP measurement jobs configured elsewhere on the router (eriRouterSlaJobType currently only supports twamp(1)), and it is deployed on Ericsson routers running active SLA measurement, giving operators ERICSSON-ROUTER-SLA-MIB SNMP monitoring of threshold breaches without having to poll raw delay/loss counters directly.

An operator subscribes to eriRouterSlaTwoWayDelayRisingThresholdMet and eriRouterSlaTwoWayLostPacketsRisingThresholdMet traps for a given eriRouterSlaJobID to get near-real-time alerts on SLA degradation, then checks eriRouterSlaReactionStatus in eriRouterSlaReactionTable to confirm the violation is still active; a rising trap with no corresponding falling trap minutes later would indicate a sustained SLA breach rather than a transient blip.

Service Level Agreement definitions with objects for monitoring SLA violations and thresholds in routers.