Hi, I have a Cisco VXR 7200. I have several 100Base TX module cards in it. All of them are running at full duplex/100, except for this one.
It will only run in half/duplex mode. I have tried replacing the card. Replacing the cable. Replace the switch (actually just tried a different switch... a cisco switch even!) it is connected to.
When I hard code the interface to "duplex half", things seem honky dorry. When I hard code the interface to "duplex full", if I connect to the dell switch, the dell detects it as duplex half. The cisco switch auto detects as duplex half. If I hard code the cisco switch to "duplex full" I then get errors.
Any thoughts on what the heck is going on here? There are several other identical module cards in this router running at FULL/100, so I'm not sure what's going on.