After upgrade from ACE20 with A2(3.5) to ACE30 with A5(1.2) I get failures in a number of serverfarm's, where before upgrade the number was zero. No drops in VIP and logs from applications do not notice any new errors. 192.168.4.44:12001 8 OPERATIONAL 125 257 38
Here is the explanation of the failures, it would have occurred at the time of upgrade but do you still see that happen
Total Conn-failures
Total number of connection attempts that failed to establish a connection to the real server.
For Layer 4 traffic with normalization on, the count increments if the three-way handshake fails to be established for either of the following reasons:
•A RST comes from the client or the server after a SYN-ACK.
•The server does not reply to a SYN. The connection times out.
For Layer 4 traffic with normalization off, the count does not increment.
For L7 traffic (normalization is always on), the count increments if the three-way handshake fails to be established for either of the following reasons:
•A RST comes from the server after the front-end connection is established
•The server does not reply to a SYN. The connection times out.
I clear the counters every night and this is the second day I am running ACE30. Something new is happening because the counter is increasing for servers that before had counter failure equel zero.
Regards
Mats
Learn, share, save
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
A RST comes from the client or the server after a SYN-ACK. 
