SUMMARY: Ethernet host on Token ring network

Magnus Hammarstrom ST/TAA (etxhaom@nrks1b.ericsson.se)
Wed, 17 Sep 1997 08:10:30 +0200

Thank you very much for all the answers.

The original question was:

>Hi Managers,
>
>I'm transfering some equipment from one factory to another,
>and ran into the problem that the factory receiving the
>equipment is running an Token Ring network. And the equipment
>is running ethernet (10BaseT tranceiver in AUI port).
>
>This would normally not be any problem, sun have token ring
>sbus boards, BUT we have run out of sbus slots on the three
>sun machines which are the transfer objects, we only have
>the AUI port availible.
>
>So my question's is:
>
>Does it exist any external box for this type of conversion?
> Vendor?

The solution is as suggested by Glenn Satchell, to add a ethernet
port to a tokenring client, and make a subnet.

For information, blackbox have a tokenring to ethernet bridge, but
this will be an expensive solution (See also David Sinn's response).

** Hera are the answers i received :

----- Begin Included Message -----

From: Glenn Satchell - Uniq Professional Services <Glenn.Satchell@uniq.com.au>

On one of your other boxes hang an ethernet hub off its ethernet port
and make another subnet. If it's a Sun then routing, etc, should all work.

----- End Included Message -----

----- Begin Included Message -----

From: ramindur@vossnet.co.uk (Ramindur Singh)

I cannot remember what the part number is, as it was a long time when I
messed around with token ring/ethernet bridges, but IBM do make a bridge.
You can also get AUI to BNC or RJ-45 transceviers to convert.

I hope this helps.

----- End Included Message -----

----- Begin Included Message -----

From: "F. David Sinn" <dsinn@psa.pencom.com>

You will need a router. There are some manufacturers that make Token Ring
to Ethernet bridges, by from my experience they are not worth the trouble
(the problem stems from the fact that Ethernet has a smaller maximum packet
size then does Token Ring, to properly handle this you need a router).

Cisco makes a small router in their 2500 series that has both Token Ring
and Ethernet ports.

----- End Included Message -----

----- Begin Included Message -----

From: "Mark T. Thomas" <markt.thomas@hsc.hac.com>

Look at "http://www.blackbox.com/". They may have what you need.
They can sometimes be expensive, but have things you cannot find
elsewhere.

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