Issue with WS-X6704-10GE module and port status

[vesk01]

Hello,

we have the following strange behaviour and I would like to know how to troubleshoot further on.

We have two 6509 switches with one WS-X6704-10GE module in each of them. There is an optical cable between the two switches plugged in  WS-X6704-10GE module on both sides. When you shut down the port on one side the other port still stays as up and you need phisycally to unplug the cable to have it down. The same behaviour is seen no matter on which of the two switches you shut down the port, the opposite one always stays as up and only removal of the cable makes it go down.

Is that a known behaviour and if not, how to proceed.

The ports are configured quite simply:

interface TenGigabitEthernet1/1

switchport

switchport trunk encapsulation dot1q

switchport trunk allowed vlan 1-10

no ip address

udld port

The IOS version is 12.2(18)SXF8

Thanks in advance for all the help,

Vesko

[get_rthym]

Hello, I suppose thats typical Ethernet behavior if u have other switches in between.

Sent from Cisco Technical Support iPhone App

[chris-hart]

From the description of your fault it appears that when the "shut" command is entered on the interface the laser is not being shutdown, easy to test with a light meter.

Problem has been reported before:

https://supportforums.cisco.com/thread/181680

[vesk01]

Hi Chris-hart,

I have checked out the link which you have sent me but there no solution is mentioned. Do you eventually know if this issue ended up with a Bug ID, so that I can check out the solution there?

Vesko

[chris-hart]

Sorry I don't know if the problem ended up with a Bug ID, I just happend to come across the problem while looking for something else.

Have you tried a later IOS release, it may have been fixed in a later release as it looks like lots of people are having the same problem.