Hi, all, When I plug in a Cisco837 router into the swich, it gives me a warning message: CDP-4-DUPLEX_MISMATCH: duplex mismatch discovered on Ethe rnet0 (not half duplex). When I do a "sh interface ethernet0", it shows: "Full-duplex, 10Mb/s". The IOS is: 12.3(8). Is there anyway to change it to half duplex? Thanks.