I have a couple Cisco Aironet 1200 APs on my network. I keep getting the same error message over and over on these and can't figure out why.
The error is: %CDP-4-DUPLEX_MISMATCH: duplex mismatch discovered on FastEthernet0 (not half duplex), with SPR-SPL Ethernet1/0 (half duplex).
"SPR-SPL" is the hostname of my Cisco 3600 router for my P2P. I have checked and Ethernet1/0 is set to full duplex and not auto. I don't understand why this error is being thrown from the AP anyway as they are both plugged into switches and not into each other. The AP is plugged into an edge switch that goes to the core and the router is directly into the core.