This was an inside facing FastEthernet interface on a border router. I solicited the help of our security guy who did track this down to a host infected with some form of Command and Control IRC ...

A Cisco switch connected to Cisco PIX firewall via cat5. The switch-side sees CRCs, the firewall side doesn't. Both are hard-set for 100/full. Is this just likely a bad cable, or could it be something ...

Interface packet loss provides indications of link problems that shouldn’t go ignored. But then you have to decide on an alerting threshold that indicates a problem without creating too many false ...