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Connection Resets on CSM w/ Apache Web Servers???

We have a CSM w/ 4.1.6 and are seeing unusual connection resets w/ our new Apache Web Servers. We are getting inconsistent connection behaviors with various servers. Here is a recent config and sniff from our issue. Thoughts?

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Cisco Employee

Re: Connection Resets on CSM w/ Apache Web Servers???

This is a L4 vserver, so the CSM will just forward the SYN to the servers [no spoofing].

So, if the server does not respond to the SYN, as we can see in the trace, this should be investigated on the server side.

I believe the CSM sends a RESET because the seq# of the last SYN does not match the previous 2 packets.

But the main issue, is why the server are not responding to SYN ?

You could try to capture a port-channel trace so we can see at the same time traffic from client to CSM and traffic from CSM to server.

Gilles.

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