[c-nsp] 3750E to stack of 2960x.....

[Blake Pfankuch - Mailing List]

What kind of uplinks?  Fiber or Copper?  SFP?  1gig or 10gig?  Cisco Branded SFP?  IOS Versions on all affected devices?

Thanks,
Blake

-----Original Message-----
From: cisco-nsp [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Scott Voll
Sent: Tuesday, March 4, 2014 8:19 AM
To: cisco-nsp at puck.nether.net
Subject: [c-nsp] 3750E to stack of 2960x.....

I have a building that has a 3750E at the core and access layer with some new 2960X's

I have both a stack of two and a single.

Both have a port channel up to the 3750E.

Both have now lost there uplinks to the 3750E within two days of being installed.

Anyone have any ideas as to what to look for?

I see nothing in the syslogs of either the 2960x or the 3750E.

I'm thinking Spanning tree?  or VTP?  or ??????

Areas you would look at?

TIA

Scott
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