First of all, our error has persisted for a while on Developing section (Real-Server).
Overview of the configuration is .... We has client running web-service request to rserver though ACE4710. There is traditional VIP. After passing VIP before going to rserver we do NATed 1-to-1 (for some reason, for ease of deployment on existing environment). Then to rserver.
Problem raised when there is too much 'Connection Reset' with error logs of 'TCP Port numbers reused' and consequence of Error Connection Reset. If we inject much more web-client request then much more RST. Please see my captured packet from my enclosed files.
Our done action plan. We did bypass VIP then connect web-client directly through NAT then rserver. Error has not been found!!!
Is there any parameter or configuration we could tune?
Is any running-configure needed. I will pose asap.
By default, the ACE removes the timestamp option parameter, but, the TCP implementation on Red Hat needs timestamp parameter to check whether the connection is new one(fast port reuse) or original one. As the timestamp option parameter has been removed, so the Red Hat can’t handle the SYN for new connection(port reuse) correctly.
On ACE, parameter map ‘tcp-options timestamp allow’ will change ACE’s default behavior and ACE will not remove the timestamp option parameter from SYN packet.
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