RE: unswitched behavior of a switched network...

["Erin Carroll" <amoeba () amoebazone com>]

All,

I've let the last few posts on this subject today go through (you'll be
seeing them hit your inbox shortly) but unless this steers back toward a
pen-test focused discussion I'll reject further posts. The topic is
interesting and has covered a lot of routing concepts and aspects but this
is a pen-testing list and not Cisco support :)

Thanks,

--
Erin Carroll
Moderator
SecurityFocus pen-test list
"Do Not Taunt Happy-Fun Ball" 


> -----Original Message-----
> From: listbounce () securityfocus com
> [mailto:listbounce () securityfocus com] On Behalf Of Jon Hart
> Sent: Monday, October 16, 2006 2:54 PM
> To: Buz Dale
> Cc: Krugger; pen-test () securityfocus com
> Subject: Re: unswitched behavior of a switched network...
>
> On Mon, Oct 16, 2006 at 03:55:43PM -0400, Buz Dale wrote:
> > I can think if a couple of possibilities.  1) This is
> > broadcast/multicast traffic. 2) The mac addresses are unknown to the
> > switch (So it will flood to find them.) 3) The port could be a trunk
> > or a mirror of a trunk.
>
> I am also seeing normal broadcast/multicast traffic, but that is to be
> expected.  #3 is not the case here.
>
> As for #2, thats kinda where I was going with my original question --
> why would a switch that is processing a session between two endpoints
> suddently forget the MAC? Yes, there are timeouts in play here, but
> aren't those along the lines of several minutes?
>
> Thanks,
>
> -jon
>
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