[c-nsp] %CDP-4-DUPLEX_MISMATCH - But they aren't connected!

Tuc at T-B-O-H.NET ml at t-b-o-h.net
Sun Dec 2 22:59:58 EST 2007


Hi,

	I'm getting on a 3640 running (C3640-JK9S-M), Version 12.4(13a) :

Dec  1 13:07:26 EST: %CDP-4-DUPLEX_MISMATCH: duplex mismatch discovered on Ethernet0/0 (not full duplex), with c2924-1.house.tucs-beachin-obx-house.com FastEthernet0/15 (full duplex).

	The problem is that E0/0 is 10/half and facing a transit provider,
while E0/1 is part of a bridge group with E1/1, and E0/1 also at 10/half
 connects to port FA0/24 on c2924-1.house.tucs-beachin-obx-house.com (At
10/half). Port FA0/15 is connected to a consumer Ethernet over Power extender....
(And yea, THAT is 100 full).

	Does CDP need EVERYTHING to be running the same speed/duplex even
when not connected directly together?

		Thanks, Tuc


More information about the cisco-nsp mailing list