Path: utzoo!utgpu!news-server.csri.toronto.edu!mailrus!wuarchive!zaphod.mps.ohio-state.edu!ncar!boulder!daemon
From: jliv@foghorn.sfsu.edu (John Loiacono IV)
Newsgroups: comp.dcom.sys.cisco
Subject: Re: Cisco configuration to boot 3Com terminal servers across subnets
Message-ID: <24898@boulder.Colorado.EDU>
Date: 19 Aug 90 07:38:59 GMT
Sender: news@boulder.Colorado.EDU
Lines: 14

> I recall that the protocol that Bridge/3com devices use to boot from can
> only be bridged. Unfortunately I do not recall what protocol it is. Maybe
> someone else on this list can help out?  If you have some sort of ethernet
> monitor you can easily determine what protocol the devices emit when they
> try to boot. This requires that you have the bridging software option in
> your cisco routers.
> 
> Greg Satz

If you can filter on Ethernet packet type, try the values 9001 and 9002.
I am pretty sure this is all you need.

jliv
SFSU