I have a network with Cat 6500 as distribution and 3750 stacks as access. The access stacks is connected to distribution with 10Gig links in a layer 2 solution with STP.
I use 10GigSR X2 modules and 6708+6716 linecards.
My problem: UDLD aggressive is enabled och both distribution switches. But UDLD seems to work only on a few access switches. When I enable UDLD on some of the 3750 stacks, the link goes to err-disable (even though the link seems to be ok).
The configuration on the 3750 stacks are identical.
I run 12.2.33SXH and 12.2.46
Anybody have any idea?