Security Basics mailing list archives
RE: how to flood the mac address table of a switch?
From: "David Gillett" <gillettdavid () fhda edu>
Date: Wed, 3 Dec 2003 10:45:51 -0800
1. Turn off spanning tree. 2. Connect a cross-over cable between two switch ports. 3. Wait a few minutes. WARNING: This may temporarily cripple the performance of your network. Remember to re-enable spanning tree as soon as you're through testing (which should shut down one of the cross-connected ports almost immediately). The result, though, is that every MAC address on your network issues a broadcast packet will be "learned" on both the cross- connected ports. If that doesn't fill up the table, your network is probably too small to worry about this issue. David Gillett
-----Original Message----- From: Hans Müller [mailto:ndof () gmx li] Sent: December 1, 2003 09:17 To: security-basics () securityfocus com Subject: how to flood the mac address table of a switch? How can flood the mac address table of a switch, to see that the security function of my switch work? -------------------------------------------------------------- ------------- -------------------------------------------------------------- --------------
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Current thread:
- how to flood the mac address table of a switch? Hans Müller (Dec 01)
- RE: how to flood the mac address table of a switch? Jim Laverty (Dec 01)
- RE: how to flood the mac address table of a switch? Blake Wiedman [Icons] (Dec 01)
- RE: how to flood the mac address table of a switch? dave kleiman (Dec 01)
- Re: how to flood the mac address table of a switch? Ranjeet Shetye (Dec 02)
- RE: how to flood the mac address table of a switch? David Gillett (Dec 03)
- <Possible follow-ups>
- RE: how to flood the mac address table of a switch? Jim Laverty (Dec 01)
- RE: how to flood the mac address table of a switch? Shawn Jackson (Dec 01)