2851 and NM-HDV2 modules

Unanswered Question
Jul 14th, 2010
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Hello all,

I have plugged a NM-HDV2-2 T1/E1 on slot1 on a 2851 router.

IOS does not recognize, it tells me that there is a "unknown" module. My IOS is SPServices 12.4

Any help?


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Overall Rating: 3 (2 ratings)
Leo Laohoo Wed, 07/14/2010 - 02:32
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My IOS is SPServices 12.4

This is information is not complete.  You need to use the "T" train.

Please don't forget to rate useful posts.  Thanks.

mcecilia Wed, 07/14/2010 - 02:49
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More detail about the version:

Cisco IOS Software, 2800 Software (C2800NM-SPSERVICESK9-M), Version 12.4(22)T4, RELEASE SOFTWARE (fc2)

Nagaraja Thanthry Wed, 07/14/2010 - 06:42
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Can you please post the output of "show diag" from the router here?



mcecilia Wed, 07/14/2010 - 07:47
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Now I can not get the show diag, but before I runned it and in module 1 (where it was plugged) it said something like "unknown module". I will update with the result may be in some hours.

Also I tried to plug into Module 2, but, strange, it didn´t fit.

Thanks for your help.

Brandon Lynch Wed, 07/14/2010 - 09:23
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Per the following link, this card was first supported in 12.3T code so you should already have support for it in 12.4(22)T4 -


I presume that you are powering the box down, installing the card, and then powering it back up.  Are you seeing any errors with regard to this module on boot-up?


mcecilia Thu, 07/15/2010 - 22:55
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It is strange how was solved. Tried to unplug and plug the module several times (of course, with the 2851 powered of). Then, as I had not result plugged it in another 2851 and worked. Then, in the first 2851 and ... worked.

Thanks all for your help.


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