appleshare servers disappeared

Hi,

A few weeks ago a two appleshare servers disappeared from one of the zones
on the campus network. I can still see the zone and a laserwriter print
spooler in it, however  when I select appleshare the two servers are
nowhere to be found.  Within the zone they are present, and I can see
servers and printers outside the zone from within the zone without
problems.

I was wondering if anyone has experienced similar problems and might have
an idea what's going in or what else I can do to troubleshoot this?

Thanks,

Mark Rosenberg
College of Education - MSU
MRosenbergAsked:
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FastjackCommented:
sounds like the servers have been misconfigured.
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PCMACCommented:
it may be that routers between departments have disallowed Appleshare servers from broadcasting their services outside of its zone.

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northwindCommented:
You most probably have a physical network problem here. My guess is that you are running 10-base-2 (coax) ethernet.
One of the segments (or *the* segment) is to long or you have some bad trancievers.
Ethernet is a collision network, and the noise level in yours is to high. It is diffiicult to explain, but as it is a transmission line you will get into the problem that it is the physical placement on the line that determines the noise level. So two computers a few feet from each other may be aware of totally different machines on the network.
It doesn't better things, that AppleTalk is *very* sensitive to this situation. Due to the packet retransmission times (15sec) you will very fast get to a 50% packet loss which will mean that the station will disappear from the name-table.
On the station right next to it - it might still be there.
I have had such a situation where I could access the disk on a station 400 feet from my machine while I  couldn't contact the machine in the next office.
Solution: Get a Time Domaine Reflectometer and measure the ethernet out. Get sufficient numbers of repeaters inserted if nescessary.
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neil_bertramCommented:
Their filesharing might have been turned off, or they are using corrupt/missing Filesharing extensions
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