mac access-list

From: Mark Stephanus Chandra (mark.chandra@gmail.com)
Date: Wed Jan 21 2009 - 07:08:58 ARST


Guys,

 

Continuing discuss about port-security the other day,

 

I choose to use Pavel Bykov recommendation to use mac access-list, but what
a surprise, After I implement this configuration, it's not really works.

 

Why I said that "NOT REALLY WORKS". I am using

 

Extended MAC access list mark

    deny any any

 

and configure it on a port fast 0/35

mac access-group executive in

 

Why I use deny any, this is to make sure I get my packet block.

 

First I plug it, it block my packet but when I release my address and renew
and obtain an ip address from DHCP. It doesn't block my packet.

 

After a while, idle on my laptop, it blocks my packet again.

 

Is this a normal behavior of a cisco switch ?

 

Regards

 

Mark Stephanus Chandra

Blogs and organic groups at http://www.ccie.net



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