I have 2 cisco switches connected using a cross cable
C3560 FA0/22 <-> C2950 FA0/24
Both ports have configured to be in full duplex, 100 mbps mode. However, recently, I see messages that complain that duplex mismatch. The problem was resolved by resetting the duplex to auto on both sides.
Jun 24 09:11:08: %CDP-4-DUPLEX_MISMATCH: duplex mismatch discovered on FastEthernet0/24 (not full du
plex), with JDAP_DEV_FS1 FastEthernet0/22 (full duplex).
Hardcode both sides as the following and it should get rid of the message. Between cisco switches leaving them as auto for both speed and duplex will work fine also . If you don't specify the duplex it will usually default to half duplex .
We are pleased to announce availability of Beta software for 16.6.3. 16.6.3 will be the second rebuild on the 16.6 release train targeted towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are looking for early feedback from custome...