Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Path: utzoo!mnetor!uunet!seismo!columbia!rutgers!topaz.rutgers.edu!hedrick
From: hedrick@topaz.rutgers.edu (Charles Hedrick)
Newsgroups: comp.unix.wizards
Subject: Re: Dual Networks on One Ethernet
Message-ID: <13746@topaz.rutgers.edu>
Date: Wed, 5-Aug-87 21:57:06 EDT
Article-I.D.: topaz.13746
Posted: Wed Aug  5 21:57:06 1987
Date-Received: Sat, 8-Aug-87 07:04:09 EDT
References: <322@pollux.UUCP>
Organization: Rutgers Univ., New Brunswick, N.J.
Lines: 20
To: jgd@pollux.UUCP


You asked how to put two networks on one Ethernet.  You need to use a
variant of "route add" to tell your machine that the other network is
present.  Assume that the other network is 192.13.2.0.  You would say
  route add 192.13.2.0 `/bin/hostname` 0
The hop count of 0 says that the network specified is directly
connected.  Note that you have to put the command in /etc/rc.local
for every machine on your network.  Machines on the other network
of course get a command that points at your network.

I note that your network addresses seem a bit odd.  180.0 is certainly
a legal class B network number, but it has not been allocated.  You
don't just make up network numbers: they are allocated by the Network
Information Center.  SMU is quite likely to be connected to the rest
of the Internet at some point, if it isn't already.  When that
happens, if you are using random addresses, other sites are likely to
get quite upset at you.  It's better to start out with officially
allocated numbers from the beginning, since otherwise you'll have to
change all your addresses, which is a painful process.  To start the
process for having a network number assigned, send mail to
registrar@sri-nic.arpa.