Virtual Server send an R flag and reset the connection

Hello my dear friends!

 

 

I've used this forum multiple times and you guys have helped me a lot in some of the weird issues I have had!

 

 

So here I go again....

 

 

When I hit my VS I see the 3 way handshake taking place.... Then I see a P flag but my VS returns an R flag and terminates the connection before I can actually reach my pool members

 

 

Please see a small tcpdump I capture that ilustrates my problem

 

 

 

 

root@f5-dmz1-dc1:/S1-green-P:Active] config tcpdump -i vlan_ext_dmz_sofia dst host 172.25.9.37 and dst port 8480

 

tcpdump: verbose output suppressed, use -v or -vv for full protocol decode

 

listening on vlan_ext_dmz_sofia, link-type EN10MB (Ethernet), capture size 96 bytes

 

 

02:22:47.613194 IP 10.0.21.111.52532 > 172.25.9.37.8480: S 399411341:399411341(0) win 65535

 

 

02:22:47.637368 IP 10.0.21.111.52532 > 172.25.9.37.8480: . ack 550784591 win 65535

 

 

02:22:47.638539 IP 10.0.21.111.52532 > 172.25.9.37.8480: P 0:299(299) ack 1 win 65535

 

 

 

 

[root@f5-dmz1-dc1:/S1-green-P:Active] config tcpdump -i vlan_ext_dmz_sofia src host 172.25.9.37 and dst host 10.0.21.111

 

tcpdump: verbose output suppressed, use -v or -vv for full protocol decode

 

listening on vlan_ext_dmz_sofia, link-type EN10MB (Ethernet), capture size 96 bytes

 

 

02:20:43.753877 IP 172.25.9.37.8480 > 10.0.21.111.52528: S 3354986010:3354986010(0) ack 1443934967 win 4380

 

 

02:20:43.800308 IP 172.25.9.37.8480 > 10.0.21.111.52528: . ack 300 win 4679

 

 

02:20:43.800317 IP 172.25.9.37.8480 > 10.0.21.111.52528: R 1:1(0) ack 300 win 4679

 

 

I tried to change setting in the TCP profile Im using with out positive results :S

 

 

Anyone facing an issue like this before?

 

 

Where I am right now id 3:00 in the morning and I've been awake for 18 straight hours now and Im running out of ideas here...

 

 

 

Any suggestion will be highly appreciated!!

 

 

 

Glenn