SUMMARY: ethernet routing problem

From: Steve Ozoa (sozoa@atmel.com)
Date: Tue Sep 14 1993 - 01:02:46 CDT


My original question was:
>
>Our problem is that we've got a subnet and currently no way to route to it.
>See the diagram below. We'd like to get the two Sun4's (SunOS 4.1.2) to route
>to the 192.199.3 network over their existing 192.199.1 interface. Is there any
>way to do this?
>
>We know we need a router; that's the eventual plan, but while we're shopping
>around, we need to get the subnets talking to each other.
>
>
>
> 192.199.1.x 192.199.3.x
>T---+----------+------...----+------------T T-----------+---...--T
> | | | | | |
> | (1) | (2) | (3) +---------------+ +--+---+
>+---+---+ +---+------+ +---+---+ | Ether Bridge | | HOST |
>| SUN 4 | |TTY Server| | SUN 4 | +---------------+ +------+
>+---+---+ +----------+ +---+---+ (one of many)
> | (1) | (3)
>T---+------------...---------+-----T
> 192.199.2.x (multiple hosts here)
>
>
>Thanks for any help; I'll summarize if there's interest.
>
>
>Steve Ozoa
>sozoa@atmel.com
>
>

There were lots of replies, but two main themes:

1. Use the 'route add...' command to set up static routing
2. Put a host on both .1 and .3, either by renumbering a current interface or
    by adding another ethernet card

There was also some question about why we're using a bridge there, and some
useful suggestions about rearranging the network. We know this is a mess;
we're in the middle of cleaning it up, and this is only a step along the way.
(there's also a bigger mess not shown, but that's another story)

Suggestion 1 was the simple answer we couldn't find (our problem was that our
sun expert isn't a network expert, and our network expert isn't a sun expert:).
Unfortunately, it didn't work, probably because the hosts on .3 are rather
brain-damaged about networking (one Novell server with a Novell TCP-IP package,
and several SCO Unix 386/486 PC's with a non-SCO network package). We're still
experimenting with it though.

Suggestion 2 we had actually thought of ourselves, and may implement, depending
on what we do with the Novell server, and whether we can get a real router.

Thanks to everyone who replied.

Steve Ozoa
sozoa@atmel.com



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