[99272] in North American Network Operators' Group
Re: Anyone using uvlan out there?
daemon@ATHENA.MIT.EDU (Deepak Jain)
Thu Sep 13 17:55:12 2007
Date: Thu, 13 Sep 2007 17:53:07 -0400
From: Deepak Jain <deepak@ai.net>
Reply-To: deepak@ai.net
To: Steven Haigh <netwiz@crc.id.au>
CC: NANOG <nanog@merit.edu>
In-Reply-To: <D802CE78-670D-4D23-8BAA-5FEDF8829FCC@crc.id.au>
Errors-To: owner-nanog@merit.edu
> How does it work?
> Using the libpcap (winpcap for windows users) library, uvlan listens to
> a specific ethernet device. If a broadcast frame is seen, then it is
> sent off to all the peers so they can add it to their records and emit
> the broadcast on their local network. Once this happens, the device
> (computer, router, gaming console, etc) which sent the broadcast will be
> known by all the peers and remote machines will know of the device's
> existance and how to route traffic to it.
I'd be very concerned if you had a lot of machines running on the same
side of a hardware switch and all were "nodes"... they'd replicate all
the broadcast frames and n^2 plus the hardware switch's contribution :).
Sounds like a problem for machines that are reasonably close together
and/or large implementations of these.
Kind of cool otherwise.
Deepak
