[108654] in North American Network Operators' Group
RE: Network topology [Solved]
daemon@ATHENA.MIT.EDU (Holmes,David A)
Wed Oct 15 14:54:16 2008
Date: Wed, 15 Oct 2008 11:53:06 -0700
In-reply-to: <48F63B1C.7070105@cox.net>
From: "Holmes,David A" <dholmes@mwdh2o.com>
To: "Larry Sheldon" <LarrySheldon@cox.net>
Cc: NANOG list <nanog@nanog.org>
Errors-To: nanog-bounces@nanog.org
If the switches are Cisco, then Cisco Works has a L2 STP forwarding path
graphical display which can be used in cases where the L3 path is a
logical abstraction overlaid on the underlying L2 topology.
-----Original Message-----
From: Larry Sheldon [mailto:LarrySheldon@cox.net]=20
Sent: Wednesday, October 15, 2008 11:49 AM
Cc: NANOG list
Subject: Re: Network topology [Solved]
Colin Alston wrote:
> Maybe there should be something (I mean like, someone should come up=20
> with a standard :P) to trace switches in a path... Problem is I think=20
> even then the simple devices won't bother to support it.
I have been away from it for ma while and in truth don't know the=20
answer--but--
To the best of my knowledge, "Layer two Switches" in fact operate as=20
multi-port bridges.
If that is true, then they ought to be transmitting BDUs which should be
detectable and used for mapping.
If the switches are all from the same manufacturer, there is a chance=20
that the manufacture has a proprietary mapping tool.
--=20
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