I have a setup with 3 Windows 2003 servers connected to a Catalyst 3560.
The Catalyst has an uplink to an ASA5510.
I have an issue with that the servers every now and then cannot communicate with each other.
Communication to and from host behing the ASA works fine.
In the servers and catalyst I can se the ASA interface mac-address in the ARP table when it's not working. This happens when i flush servers ARP chance.
For now it working since I added the no proxyarp on that interface in the ASA.
I'm not sure if that is how it should be.
How can I trouble shoot this?