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Gigabit Link Problem

Cisco 7507 's [GEIP+] and Catalyst 6509 's [WS-X6516-GBIC(WS-G5484)] Connection  Problem.

Error Log : %CDP-4-DUPLEX_MISMATCH...

I know that Gigabit Ethernet allow only Full-Duplex.

What's wrong?

1 ACCEPTED SOLUTION

Accepted Solutions
Cisco Employee

Re: Gigabit Link Problem

This is not my area of expertise, but I suspect you are hitting CSCdz59223. The workaround is to disable cdp on the interface. The ddts was resolved recently, but has not yet been integrated in an IOS image. Here is the Release Note:

After upgrading 7500 router from 12.1(11)E9 based image to 12.1(14)E image,

keeps getting these messages:

Dec 17 17:22:41.666 AEST: %CDP-4-DUPLEX_MISMATCH: duplex mismatch discovered on GigabitEthernet1/0/0 (n

ot full duplex), with c06-7600-2-P-D2-SM2 GE-WAN8/1 (full duplex).

Dec 17 17:23:41.663 AEST: %CDP-4-DUPLEX_MISMATCH: duplex mismatch discovered on GigabitEthernet1/0/0 (n

ot full duplex), with c06-7600-2-P-D2-SM2 GE-WAN8/1 (full duplex).

** also affects 7200s

- Ray

1 REPLY
Cisco Employee

Re: Gigabit Link Problem

This is not my area of expertise, but I suspect you are hitting CSCdz59223. The workaround is to disable cdp on the interface. The ddts was resolved recently, but has not yet been integrated in an IOS image. Here is the Release Note:

After upgrading 7500 router from 12.1(11)E9 based image to 12.1(14)E image,

keeps getting these messages:

Dec 17 17:22:41.666 AEST: %CDP-4-DUPLEX_MISMATCH: duplex mismatch discovered on GigabitEthernet1/0/0 (n

ot full duplex), with c06-7600-2-P-D2-SM2 GE-WAN8/1 (full duplex).

Dec 17 17:23:41.663 AEST: %CDP-4-DUPLEX_MISMATCH: duplex mismatch discovered on GigabitEthernet1/0/0 (n

ot full duplex), with c06-7600-2-P-D2-SM2 GE-WAN8/1 (full duplex).

** also affects 7200s

- Ray

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