Symptom
Device stopped sending cflows to the configured Netflow Collector.
The status of the flow monitor cache showed the flows collected according the flow record configured, however, they were not being sent to the collector.
Reachability to the Collector is ok, only cflows are not being seen on captures taken.
Conditions
Device is a Catalyst 9500X and Catalyst 9600X including supervisor 2, running the software version Dublin 17.12.1 and 17.13.1
Workaround
Upgrade to suggested release 17.12.3
Further Problem Description
The Netflow configuration is working correctly on the device. The Netflow Records shows the correct information, the cache table of the Flow Monitor shows the flows collected throughout the interfaces configured to work as a Monitor.
The only problem is that the flows are not being sent to the configured Netflow Collector.
