NetNews Usenet Archive 1993 #3/NN_1993_3.iso/spool/comp/dcom/isdn/1201

Internet Message Format | 1993-01-21 | 1.6 KB

Xref: sparky comp.dcom.isdn:1201 comp.protocols.nfs:3191
Path: sparky!uunet!olivea!sgigate!sgi!rigden.wpd.sgi.com!rpw3
From: [e-mail] (Rob Warnock)
Newsgroups: comp.dcom.isdn,comp.protocols.nfs
Subject: Re: Low cost ether/isdn brouters (was PC-NFS PPP Serial/ISDN driver wanted)
Message-ID: <[e-mail]>
Date: 22 Jan 93 00:37:38 GMT
Sender: [e-mail]
Organization: Silicon Graphics, Inc.  Mountain View, CA
Lines: 28

[e-mail] (Dave Carr) writes:
+---------------
| Interesting.  Could you tell me more.  With ISDN, we are basically talking
| about a point-to-point link.  Our view is with the right software mods, you
| can get the desired performance out of a bridge.  The trickiest part is the
| handling of multicast and broadcast.  If we can eliminate these packets
| without doing the entire routing function, do we have what you need?
+---------------

It's not the broadcasts/multicasts that hurt so much, but the total lack of
filtering ("learning") on your low-end product. As we told your sales folk
when they visited here, anybody who has an Ethernet at home probably has
more than one device on that Ethernet, which makes a bridge that doesn't
do filtering worse than useless!

Actually, what I'd prefer even more is a cheap *router*, not a bridge. That
would completely avoid the questions of "learning"/filtering, broadcast,
and multicast. And since we all *know* somebody could make a cheap router
with a PC, an Ethernet card, and an ISDN card...


-Rob

-----
Rob Warnock, MS-9U/510        [e-mail]
Silicon Graphics, Inc.        [phone]
2011 N. Shoreline Blvd.
Mountain View, CA  94043