Forum Discussion
I am using BIG-IP Virtual Edition version 11.6.0 (Build 0.0.401).
Yes - i am using the same profile for clients and servers:
Protocol Profile (Client): tcp-slow
Protocol Profile (Server): Use client profile
All those sessions are accepted and then marked as abandoned
root@(f5)(cfg-sync Standalone)(Active)(/Common)(tmos) show ltm profile tcp
.....
-------------------------------------
Ltm::TCP Profile: tcp-slow
-------------------------------------
Virtual Server Name N/A
Connections
Open 0
Current in CLOSE-WAIT/LAST-ACK 0
Current in FIN-WAIT/CLOSING 0
Current in TIME-WAIT 0
Accepted 33
Not Accepted 0
Established 0
Failed 0
Expired 0
Abandoned 36
I have noticed that F5 is sending TCP RST even after 110 us after sending SYN to real server.
I am also a bit surprised because when i have tried to use ipother profile TCP checksum was not recalculated (even after i have set TM.TcpUdpTxChecksum software-only) by F5 and my Linux servers were dropping such TCP SYN packets - but since it's not L4 profile it's expected ?
How to troubleshoot my problem ? Is there any way to check why that RST packet is being sent that quickly ?
Thanks, Michal