I have an access switch WS-C4506 (122-25.EWA.bin) which is redundant connected over trunks to two distribution Switches WS-C6509-E (122-33.SXH.bin)and I use rapid spanning tree.
One Vlan (not vlan1) is blocked on access switch and the other is in forwarding state on access switch.
The problem is that I have still traffic on blocked Vlan (interface), although this Vlan is blocked ??
I receive no failure message or errors.
Thank you for your comments and help.