Question

A network engineer configures CoPP on an edge router to rate-limit management traffic. The NMS uses SNMPv2c to poll the router. After deployment, the NMS reports intermittent timeouts and gaps in interface statistics graphs. The engineer runs 'show policy-map control-plane' and sees the SNMP class matching only a small number of packets while a large and increasing conform/exceed drop count appears under the 'class-default' policer, which is configured with a low 8 kbps rate. Which action most likely resolves the SNMP polling problem?

Accepted Answer

Correct the ACL referenced by the SNMP class so that it matches UDP port 161 traffic sourced from the NMS, ensuring the packets hit the SNMP class instead of class-default

Answer

Increase the police rate of the SNMP class to a higher value such as 64 kbps

Answer

Remove the class-default policer entirely so no control-plane traffic is ever dropped

Answer

Change the SNMP class to match TCP port 162 instead of UDP, since SNMP notifications require TCP