On Thu, 20 Jul 2000, Chuck Martin wrote:
> Here's what I'm doing. I recently picked up two used IBM ethernet
> cards (pcmcia - cardmgr reports them as "IBM Credit Card Ethernet"
> in /var/log/messages). These have BNC connectors on them. I also
> picked up two BNC tee connectors, two terminators, two BNC to RJ11
> adapters, and a 2' cord with an RJ11 plug on each end. I hook
Acckkkk!!! This cable setup is *not* a valid configuration!
You must use only 50ohm coax with a terminater at each end, and no stubs
longer than 5cm (most of which is used by the card). Those BNC-to-RJ11
converters are for an obsolete IBM cabling system, not for Ethernet.
Twisted pair is now so much better than coax that I recommend forgetting
about ever setting up a coax network, and any that still exist should be
replaced at the first failure.
You should buy a well-marked Cat-5 cross-over cable for your system if your
network cards support 10baseT. If you have a choice, buy either a yellow
cable with molded grey ends, or red cables.
Donald Becker [EMAIL PROTECTED]
Scyld Computing Corporation http://www.scyld.com
410 Severn Ave. Suite 210 Beowulf Clusters / Linux Installations
Annapolis MD 21403
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