Hello, I'm trying to block a specific mac address at a catalyst 3524 switch. I've tried RTFM'ing but it seems like all I can come up with is setting up IP based ACL's on the 3524. I'd like a method to do a MAC ACL. Thank you for your advise! Regards, Christopher J. Wolff VP CIO Broadband Laboratories, Inc. http://www.bblabs.com