Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!swrinde!zaphod.mps.ohio-state.edu!think!ames!haven!umbc3!tron!kerr
From: kerr@tron.UUCP (Dave Kerr)
Newsgroups: comp.sys.apollo
Subject: Re: Using the same IP class C adress with a domain-ring and an ethernet
Keywords: tcp-ip
Message-ID: <464@tron.UUCP>
Date: 5 Dec 89 23:18:42 GMT
References: <1531@geocub.greco-prog.fr>
Reply-To: kerr@tron.UMD.EDU (Dave Kerr)
Organization: Westinghouse Electric Corporation
Lines: 27

In article <1531@geocub.greco-prog.fr> am%iefups@inria.inria.fr writes:
>
>	My site has for a short time an internet class C adress. We have a
>small (15 machines) domain-ring, and an equal number of others computers
>on an ethernet. Presently (sr10) all the machines communicate without problems
>with tcp ip. We have 2 different domains, and an apollo gateway.
>	Now, we must renumber all the machines, with respect to our class C 
>adress. My problem is : how can i use the same class C adress with a domain
>ring and a plain ethernet ? I am not a tcp/ip expert and the documentation
>did not seem to be very helful (at least to me !). Could somebody
>give me some hints ?




You have to have your domain ring be one network and the ethernet be another 
network Your apollo gateway can run /etc/routed to route between the two
networks. These networks can be subnets, where you divide the host portion
of your class C address into a network and host portion. This is done with
the mask option to /etc/ifconfig. Alternatively you could get another
class C address for the token ring.


-- 
Dave Kerr (301) 765-4453
kerr%tron.UUCP@umbc3.UMBC.EDU             from an Internet site
kerr@tron.UUCP                            from a smart uucp mailer