Forum Discussion
hooleylist
Jun 14, 2011Cirrostratus
Hi Kenny,
I don't think there is anything special you're doing in the iRule which would trigger a load balancing failure and the LB_FAILED event to run. You can check the LB_FAILED wiki page for details on when this event is triggered:
http://devcentral.f5.com/wiki/default.aspx/iRules/lb_failed
If this happens frequently, you could try capturing a tcpdump of the client and serverside traffic to see if the pool member is in fact not responding to LTM SYNs. For details on using tcpdump, check SOL411:
sol411: Overview of packet tracing with the tcpdump utility
http://support.f5.com/content/kb/en-us/solutions/public/0000/400/sol411.html
Aaron