Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!wasatch!haas
From: haas@wasatch.UUCP (Walt Haas)
Newsgroups: comp.dcom.lans
Subject: Re: CATV data networking question
Message-ID: <1026@wasatch.UUCP>
Date: 3 Feb 89 19:34:24 GMT
References: <1422@ucsd.EDU> <27676@bu-cs.BU.EDU>
Distribution: all
Organization: University of Utah CS Dept
Lines: 22

In article <27676@bu-cs.BU.EDU>, kwe@bu-cs.BU.EDU (kwe@bu-it.bu.edu (Kent W. England)) writes:
> 	You might want to be careful about committing to the broadband
> token bus standard [802.4].  It may not go anywhere in terms of
> installed base.
> 	Ungermann-Bass has dropped support for the broadband token bus
> medium.  They say it is due to lack of market interest.

The lack of market interest might just be, lack of interest in UB products.

> Doesn't someone make a .3-.4 bridge already? 

Sytek and Concord make bridge products which allow you to encapsulate
either Ethernet or 802.3 packets and ship them over 802.4 broadband to
a distant Ethernet.  Chipcom has a new product that does this, and also
has on 802.3<=>802.4 conversion mode so that 802.3 and 802.4 networks
can talk to each other.  The big advantage that this type of product
has over a CSMA/CD on broadband approach is that the distance limits
are greater.  Our campus is too big for CSMA/CD over broadband products
like the Chipcom Ethermodem or Applitek Bandmaster.  We chose the
802.4 on broadband bridge approach because of our network diameter.

Cheers  -- Walt Haas    haas@cs.utah.edu    utah-cs!haas