MAC Filter 3560

From: Chris Grammer <cgrammer_at_essilorusa.com>
Date: Thu, 9 Sep 2010 14:49:44 -0500

I have run into an interesting issue.

If I create a MAC filter such as:

mac access-list extended BLOCK3
 deny host 0012.d993.d5c2 any
 permit any any

I apply the access-list to the fa1/0/1 interface of the switch:

interface FastEthernet1/0/1
 switchport access vlan 40
 switchport mode access
 mac access-group BLOCK3 in

The problem is, the access list will not block the MAC address unless I
shut/no shut the interface.
If I apply the MAC access-list to a vlan access-map it exhibits the same
behavior.
If I apply an IP access list to the interface or access-map, the change is
immediate.

Is this normal behavior for a layer 2 access-list on a switch?

Thanks,

Chris

Blogs and organic groups at http://www.ccie.net
Received on Thu Sep 09 2010 - 14:49:44 ART

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