I have encountered a strange issue I have never seen before.
I have a 2811 router Fa0/0 interface connected directly to a C3750E gigabit switchport with a normal UTP patchcable.
Both sides are configured with speed 100, duplex full, but the switchport operational status is 100Mbps, Half-duplex.
Any ideas on what might cause this situation?
This is the switchport configuration:
0001#sh run int Gi1/0/44
switchport access vlan 102
switchport mode access
no snmp trap link-status
spanning-tree bpduguard disable