Ethernet and Fastethernet connection

[leeyuetfoong]

Hi,

When I issue show log command i saw a lot of the following error message

Nov 28 03:16:57.079 UTC: %CDP-4-DUPLEX_MISMATCH: duplex mismatch discovered on Ethernet0/0 (not full duplex), with GZOFF-24AREA01.china.nokia.com FastEthernet0/4 (full duplex).

Nov 28 03:17:57.086 UTC: %CDP-4-DUPLEX_MISMATCH: duplex mismatch discovered on Ethernet0/0 (not full duplex), with GZOFF-24AREA01.china.nokia.com FastEthernet0/4 (full duplex).

Nov 28 03:18:57.090 UTC: %CDP-4-DUPLEX_MISMATCH: duplex mismatch discovered on Ethernet0/0 (not full duplex), with GZOFF-24AREA01.china.nokia.com FastEthernet0/4 (full duplex).

but when i check my Ethernet 0/0 is actually set to full duplex.

gv-rtr11#show run

interface Ethernet0/0

ip address 172.28.68.2 255.255.255.0

ip access-group WORM_PROTECTION in

ip access-group WORM_PROTECTION out

ip accounting output-packets

load-interval 30

full-duplex

service-policy input marking

traffic-shape group 80 256000 7936 7936 1000

standby 1 ip 172.28.68.1

standby 1 preempt

gv-rtr11#show clo

03:31:43.781 UTC Mon Nov 28 2005

can anyone tell what happen ???

best regards

Lee

[nhabib]

What about FastEthernet0/4 on GZOFF-24AREA01.china.nokia.com?

Does it also say "full-duplex" in the config?

[leeyuetfoong]

I'm not sure because i don't have access to the switch. but can we trust the error message? since the error message give us the wrong information on the Ethernet0/0, should be full duplex.

according to the error message the Fastethernet0/4 should be in full duplex mode

thanks for your reply

best regards

Lee

[nhabib]

I suspect that the other side is not set to full duplex, but possibly auto

[spremkumar]

Hi

Can you hardcode the duplex to full in the remote fastethernet 0/4 and check for the logs ?

If you are still getting the error logs would suggest to change the duplex in the ethernet0/0 to half and also in fastethernet 0/4 and verify ??

regds

[leeyuetfoong]

Fastethernet0/4 already in full deplex mode as stated in the error log

best regards

Lee Yuet Foong