Weird timeouts - any insight

Hi PJ,

 

 

I can't think of a reason that this would be happening. Maybe incompatible source port reuse? Are you using SNAT for the communication from LTM to the pool members?

 

 

Anyhow, I'd suggest capturing tcpdumps on LTM of a failure. You'll want to get the client and serverside communication. You can use a tcpdump command like this to get both sides of traffic:

 

 

tcpdump -ni 0.0 -s0 -w/var/tmp/trace.1.dmp host VIP_IP or host NODE_1_IP or host NODE_2_IP or host NODE_3_IP

 

 

As this captures all traffic to the virtual server and pool member IP addresses, it could get big quickly. So try to stop the trace as soon as a failure occurs. You can use WinSCP to copy the trace off the unit and Wireshark to analyze it. If you need any help with the capture and analysis you can open a case with F5 Support.

 

 

Aaron