3850 & 10G Network Module

[Bob Greer]

Hi there,

Thanks for reading! 

I've got a WS-C3850-24T with a  C3850-NM-4-10G inserted.  A show inventory reveals the switch doesn't see the 10G module.  I've swapped:

The failing module into 3850 #2 and it was recognized

A recognized module from 3850 #2 into 3850 #1 and the module was not recognized. 

Have you seen this before?  Almost forgot: 3850 #1 is a 2-member stack. 

Thanks!

Bob

[Reza Sharifi]

Hi Bob,

I have not seen that but I think you should reproduce it and call TAC.  They may need to replace the switch if there is something wrong with the slot on switch#1.  Since they are stacked I am assuming you have installed the same IOS in both switches right?

HTH

[Bob Greer]

Hi Reza,

Thanks for writing.

Yes, the stack is running in INSTALL mode; same IOSs on both members.

I usually figure if the stuff doesn't work, then it's probably my process.

I'm opening a ticket with TAC.

Thanks again for writing,

Bob

[adwang_bing · Accepted solution]

Is the switch you inserted the NM-4-10G into in 3850#2 a 48 port or 24 port switch?  The 24 port 3850 does not support the NM-4-10G and will only support the NM-2-10G and NM-4-1G. 

[Philip D'Ath]

adwang_bing  is correct.  C3850-NM-4-10G is not supported in a WS-C3850-24T.   You'll need to use a C3850-NM-2-10G.