System Management Configuration Guide for Cisco 8000 Series Routers, Cisco IOS XR Releases

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System Management Configuration Guide for Cisco 8000 Series Routers, Cisco IOS XR Releases

Monitor the packet loss

Updated: June 12, 2026

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Use SNMP traps to monitor packet loss when it exceeds defined thresholds.

Configure SNMP EVENT-MIB traps to automate monitoring of packet loss events if thresholds are breached.

This procedure helps you detect and respond to packet loss on interfaces, as SNMP notifications are generated automatically for network monitoring systems.

Before you begin

  • Ensure SNMP is enabled and properly configured on your device.

  • Confirm that your SNMP management system can receive and process EVENT-MIB traps.

Procedure

Configure SNMP to monitor packet loss by specifying the falling (lower) threshold, sampling interval, and rising (upper) threshold:

Example:

Router#configure
Router(config)#snmp-server mibs eventmib packet-loss falling 1 interval 5 rising 2
Router(config)#end
Note

  • <lower-threshold>: Minimum packet loss percentage to trigger a falling trap.

  • <sampling-interval>: How often (in minutes, 5–1440) packet loss is polled.

  • <upper-threshold>: Packet loss percentage to trigger a rising trap.

  • Up to 100 interfaces can be monitored.

The device generates SNMP EVENT-MIB traps when packet loss on configured interfaces exceeds the upper threshold or drops below the lower threshold. These entries cannot be modified with SNMP SET operations.