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From: warelock@netrun.cts.com (Tom Zacharoff)
Newsgroups: comp.os.386bsd.questions
Subject: Seeking help with a SLIP network
Followup-To: poster
Date: 8 Jul 1993 21:33 PST
Organization: San Diego State University
Lines: 47
Sender: accnt1485@bestsd.sdsu.edu (sharon lightner)
Distribution: world
Message-ID: <8JUL199321331518@bestsd.sdsu.edu>
Reply-To: warelock@netrun.cts.com
NNTP-Posting-Host: 130.191.1.4
News-Software: VAX/VMS VNEWS 1.4-b1
I am participating in a tcp/ip networking experiment using
three pc's running netbsd and one pc running windows and ka9q. The
systems are daily-chained together with slip lines. The slip lines
work just fine and I'm able to start at the system on the end of
the network and telnet to it's neighbor via its slip line. Once
logged in there I can then telnet to the next host in line and so
on.
What I want to do is be able to have the two systems in the
middle (netbsd boxes) route packets from one slip line to the other
slip line depending on which system it's supposed to go to. I've
done some reading on this and it looks like these interior systems
should function as gateways. I've also read that in order to set up
a gateway system you need to establish two unique ip addresses and
hostnames in the /etc/hosts file. My current understanding of ip
addresses is where you would have a machine connected to an
ethernet network and that system would be assigned an ip address of
its own.
My question is: Do I have to set up these interior systems as
gateways and is my thinking correct on how to do this? This must be
a common occurrence on the internet as it is a network-of-networks
and the link between the networks are gateway systems.
I want to be able to sit an end site and ping the other end.
This currently fails. Initially we had configured each system with
just one unique ip address. It understands a ping from its neighbor
and will respond accordingly but it won't pass that packet out the
other com port to the correct system. I've added routing table
entries up the kazoo and nothing seems to help.
Below is a diagram of our network:
(slip lines)
|
+-------------+-----------------+
/ | \
v v v
caymen ========== altair ========== goomba ========== yoshi
^ ^ ^ ^
\ | | /
----------------+--------+---------+--------------+
|
(network hosts)
Please help if you understand this stuff or have gone through
this already. Or if you can point me in the right direction... :-)