I have a customer who has a 3550. He is getting very poor performance with clients in the same VLAN. I have traced the problem back to the VLAN filter. With this removed there are no permformance issues.
I've noticed that the CPU on the switch at sat at around 50% with the VLAN Filters active.
I would assume that the filter should be applied in hardware and therefore the CPU should not be hit.
Can anyone offer any advice on how to change the the VLAN filter to improve performace? (if not I plan to just remove it and put ACL's on the layer3 vlan interfaces).
vlan access-map VMap1 1
match ip address 101
vlan filter VMap1 vlan-list 1-6,10,15,20-30,32-33,40,100-117,210-211
ACL 101 attached.