We are currently running 4.3.4 and are looking at upgrading to the 5.x.x train.
FWIW, our local SE recommended against 5.1.2 and waiting for 5.1.3
mainly because of the bug fixes and how they relate to what we do here.
Supposedly 5.1.3 is due out in the next couple of weeks if you're not in a
this
possibility by setting allowed lists on the trunk ports of switches that
have used up their allocation of spanning-tree instances.
And I know the "feature" exists on the classic 10/100 Catalyst 3750s as
I have seen it happen on them as well.
Bill Foster
Network Support Spe
