Off one of our Cisco ASA firewall interfaces I have created a DMZ network. Connected to our ASA on the inside interface (behind a 3com switch) is a Cisco 2921 router that connects us with our corporate office. Whenever I have a server running on the DMZ network, we get a lot of input errors / overruns on the LAN facing interface on the 2921 router. No other interface is getting these errors, just on the 2921. Performance does not seem to be impacted at all but it just seems really strange. Jumbo frames is disabled throughout, I have also tried to enable flow control but it doesn't seem to make any difference. Anyone have any clue as to why we are seeing massive input errors?
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