Cisco CDN (Alarm 550001 (SEKeepalive) SE keepalive timed-out )
The alarm message that you are querying is indicating the keepalive between SR and SE has timed out.
There is UDP based keepalive messages sent from each SE to all SR periodically, by default it is 2 seconds. It is configurable via CDSM GUI. The destination port is 2323. This message has SE load information inside.
To check the keepalive message, you can execute following command on SR
check any error message popup. quit by Ctrl+C, then undebug all
Between 2.6.3 and 3.2.1, there is major difference in the format of packet. We do not recommend you to mix the version in production network. If you are requesting urgent assistance because of the service impact by this alarm, please do contact Cisco TAC support.
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