XENPAK-10G-LR does not switch off the laser

Unanswered Question
Jan 19th, 2009


We have a problem with the XENPAK-10G-LR that doesn't switch off the lasser in shutdown state, installed in 6509 with WS-X6704-10GE. The other side of the connection doesn't detects the shut.

I have checked that the X2-10G-LR disables the light, then the other side see the interface as down/down.

What is the cause?

Any method for disable the laser?



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kbrinker Tue, 11/03/2009 - 11:58


We have a LR Xenpak that does the same thing. What was done to fix your problem?


Tom Randstrom Tue, 11/03/2009 - 19:42

What IOS release are you running?

Have you checked the release notes to see if this issue has been identified?

jyubero Wed, 11/04/2009 - 03:45


We have had the same problem in 7600 (12.2SR) and 6500 (12.2SX).

I checked the realase notes and field notices, without results.

As a workaround, you can activate 'ethernet oam' to check that link is really up (if the other box supports it).



Tom Randstrom Wed, 11/04/2009 - 06:10

I guess you will have to report it as a bug so that it can be fixed in a future release.


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