Intermittent SNMP

[jvmanansala]

Hi To All,

I have issue on my Cisco Router ISR4221/K9 with iOS 16.08.1.

On my LibreNMS Monitoring the router is monitored down because SNMP is unreachable.

Upon checking on the logs of the router this "SNMP-3-RESPONSE_DELAYED: processing GetNext of ciscoMgmt.810.1.2.1.1 (24012 msecs)" is on the log list.

[Spooster IT Services]

Hi,
This looks to be a bug in IOS 16.08.1. Bug ID is CSCvm07355.
https://quickview.cloudapps.cisco.com/quickview/bug/CSCvm07355

[jvmanansala]

Hi Spooster,

Thank you for this, i will check the bug details and give you feedback.

[Georg Pauwen]

Hello,

SNMP by default has low priority, so in case of e.g. high CPU utilization, SNMP traffic could be delayed or dropped.

Try and configure:

Switch(config)#snmp-server ip precedence 7

Or as an alternative increase the snmpwalk timeout on your LibreNMS management system...

[jvmanansala]

Hi Georg

Thank you for this, i will try also this suggestion and observe what will happen.