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RE: Caching a sniffer
From: Fernando Gont <fernando () gont com ar>
Date: Wed, 24 Mar 2004 19:26:49 -0300

At 08:58 24/03/2004 -0800, David Gillett wrote:

  I presume that some switches, faced with something like macoff, will
overflow the table such that legitimate addresses that should have been
learned start flooding to all ports as well.
  But this is not the only possible reaction of a switched network to
macoff!  If Cisco's port security is enabled, the switch may just shut
down the port running macoff.

How does it detect this? By realizing that frames from a given port come from several different MAC source addresses?

Fernando Gont
e-mail: fernando () gont com ar || fgont () acm org

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