our ACE module in our 6509 seems to not forward all tcp-retransmitions to the servers in the server farm.
We have an issue with a particular application over our WAN and I can see that after the servers send duplicate acks for missing segments, the client does respond with retransmissions which get received by the outside interface of the ACE module, but I cannot see those retransmissions being passed to the server farm which I think is causing the TCP session to drop.
Has anyone had any experience with this before?
I found a document at http://www.cisco.com/en/US/docs/interfaces_modules/services_modules/ace/v3.00_A1/configuration/security/guide/tcpipnrm.html#wp1071390 which advises that you can use the command "set tcp queue-limit" to increase the queue size of out of order tcp segments from the default of 5. I cannot seem to tyoe this command in to our ACE module.
not sure if that command is valid any more.
ACE module details are:
loader: Version 12.2
system: Version A2(3.2) [build 3.0(0)A2(3.2)]
system image file: [LCP] disk0:c6ace-t1k9-mz.A2_3_2.bin
installed license: no feature license is installed
Hope i've explained the issue clearly enough. Please let me know if you need anything elaborating.