Management port is configured as half duplex...

Mmm....

 

 

You don't have the switchports hardset to full-duplex instead of auto do you? Cisco switches have a 'feature' where they don't advertise their config if you hard-set them. The default for devices that are auto-detecting speed and duplex is then to do half-duplex...

 

 

Not sure I agree it's a feature no matter how much my friend the CCIE tries to convince me :)

 

 

H