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

[Scott Voll]

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