Path: utzoo!mnetor!uunet!husc6!rutgers!ucla-cs!zen!ucbvax!LABS-N.BBN.COM!mckenzie
From: mckenzie@LABS-N.BBN.COM (Alex McKenzie)
Newsgroups: comp.protocols.tcp-ip
Subject: Re:  More than one IP (sub)network on one ethernet cable
Message-ID: <8712211456.AA26212@ucbvax.Berkeley.EDU>
Date: 21 Dec 87 14:06:50 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The ARPA Internet
Lines: 11

A (temporary) reason we had at BBN for having two IP nets on a single Ethernet
was a restructuring of our campus network.  We built one big Ethernet to
replace several smaller ones.  It was extremely convenient to be able to
change which physical Ethernet a system was connected to asynchronously from
changing what IP address that host was using.  In fact, if I recall correctly,
some hosts began using their new IP address before discontinuing use of their
old IP address, as another way of maintaining uninterrupted service during the
cutover.

Alex McKenzie