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Posting-Version: version B 2.10.1 6/24/83; site sphinx.UChicago.UUCP
Path: utzoo!watmath!clyde!cbosgd!ihnp4!gargoyle!sphinx!ronr
From: ronr@sphinx.UChicago.UUCP (Ron Rusnak)
Newsgroups: net.lan
Subject: Codenoll 2020 to 3Com 3C400 Multibus problem
Message-ID: <1156@sphinx.UChicago.UUCP>
Date: Tue, 1-Oct-85 19:45:44 EDT
Article-I.D.: sphinx.1156
Posted: Tue Oct  1 19:45:44 1985
Date-Received: Thu, 3-Oct-85 04:23:29 EDT
Organization: U. Chicago - Computation Center
Lines: 17

We have built several ethernet gateways using 68000 multibus
and 3com multibus ethernet controllers.  They work quite 
well when connected to coax transceivers.  We are now
trying to connect them to Codenoll 2020 fiber optic transceivers.
The result is that the 3Com board's throughput drops by a factor
of six.  

Both the 3com controllers and the Codenoll transceivers claim
to meet Ethernet 1.0 specifications. 

Has anyone out there run into a similar problem or does anyone
have any advice on how to get around the problem?

Ron Rusnak (...!ihpn4!gargoyle!sphinx!ronr)

University of Chicago
Computation Center


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