


Connecting LocalTalk Devices to Ethernet Networks
I'm the network manager for a school district in the process of
upgrading five schools to ethernet, category-5 wiring, etc. We are
not planning on supporting LocalTalk in our wiring closets at any of
these sites, so if a device is to be on the network, it's going to
have to have an ethernet
card, transceiver, or LocalTalk
bridge of some kind. Right now we plan to put cards and
transceivers on all LC-class machines and above. That includes the
original LC, II, III, 475, 520, 575, 5200, 5260, and 5300, in
addition to other PowerMacs (we have a lot of 6100s).
Our dilemna is what to do with the older machines, and our
printers. We have a lot of SEs and Classics (several hundred) that
get heavily used, many of which are a teacher's primary e-mail
source. These machines we *have* to put on the network. We also have
a big investment in AppleTalk ImageWriters, HP DeskWriters, and
LaserWriters.
What are the best ways to network these devices? One solution we
are considering is clustering the machines and printers and put them
on an EtherPrint device that connects up to 8 LocalTalk devices to
ethernet. This would be more cost effective than putting a single
device on each EtherPrint, as the premium to go from 1 to 8 ports is
relatively small ($200 to $230 or so).
Can you recommend vendors for these devices? Who makes a good
ethernet card for the SE, and is it worth it? Can an SE PDS card be
used in a IIsi? Can an SE/30 PDS card be used in a IIsi or IIci? Are
there any good external ethernet devices for the SE? We have used
some Farallon EtherWave products, but that is expensive ($300+ per
machine). We've seen SE ethernet cards for $130, is this reasonable?
Does the card require System 7?
Are there any economical internal upgrades for LaserWriters to give
them an ethernet port, or do they have to use a LocalTalk bridge
device? Again, what are the best solutions for connecting older
LaserWriters to ethernet?
Our solution:
We have purchased 150 SE ethernet cards, and a like number of
Asante EN/SC adpaters and Asante MicroPrint adapters to put our SEs,
Classics, and printers on ethernet. My boss remained adamant about
allowing any LocalTalk at the new sites, so we opened our wallets for
the hardware.
Suggestions:
The answers validated our current LocalTalk network, which uses Farallon StarControllers (though people preferred the Shiva Fastpath over the Farallon I/5, which we use), and also our decision to purchase Asante ethernet NICs/adapters for our older machines. We recently installed close to 100 of the Asante SE cards, the only glitches being full hard drives and the System 6.0.8 requirement (we're upgrading to System 7.0.1).
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Mike Owen mowen@removme.shorelin.wednet.edu
Network Manager Shoreline School District
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