SNAT POOL AUTOMAP ISSUE
Hi: Here is the topology:
Client-192.168.81.61--------F5-130.97.120.19---------------Server-130.97.121.131
the client(192.168.81.61) want to connect the server(130.97.121.131) with a virtual ip 192.168.120.131:9000.For this purpose,I configure a standard VS at LTM using a vitual IP 192.168.120.131:9000.If I choose AUTOMAP as my SNAT POOL,the connection is fine,but the source ip will translate to 130.97.120.19,and I really don't want this happen.If I set SNAT POOL to NONE,then the source IP remain to 192.168.81.61,but the tcp connection will fail...In order to find out what's going on,I do some captue in both client and server
For client, I can see these packet:
192.168.81.61----SYN---->192.168.120.131
192.168.120.131---SYN ACK---->192.168.81.61
192.168.81.61---ACK--->192.168.120.131
For server, I can only see these packet
192.168.81.61---SYN--->130.97.121.131
130.97.121.131---SYN ACK--->192.168.81.61
Apparently,the ACK from F5 to server is missing,I don't know why F5 wouldn't send the ACK.But when I used the AUTO MAP at SNAT POOL,F5 would send the ACK,that's why the connection can be success.
Have anybody met this issue before? Appreciate for your helpging.