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Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!swrinde!zaphod.mps.ohio-state.edu!sunybcs!sbcs!sbmiclr.Berkeley.EDU!vallon
From: vallon@sbmiclr.Berkeley.EDU (Justin Vallon)
Newsgroups: comp.sys.mac,comp.sys.mac.hardware
Subject: Re: PhoneNet woes
Keywords: AppleTalk PhoneNet LocalTalk unreliable
Message-ID: <4145@sbcs.sunysb.edu>
Date: 4 Dec 89 22:24:31 GMT
References: <21@caslon.cs.arizona.edu>
Sender: news@sbcs.sunysb.edu
Reply-To: vallon@sbmiclr.Berkeley.EDU (Justin Vallon)
Lines: 39

> [ A PhoneNet net (?) with 50 nodes.  Last 4 SE's on right can't spool. ]

> 
> Terminator---16 SEs---10 SE/30s---MacII---LW---LW---20 SEs---4
SEs---Terminator
>                      LONG Cable ^             Problem Machines ^
> 
> Have we surpassed the limits of a PhoneNet Network?  What are they anyway?
> What can we do about it?  Any help would be appreciated.

The limit of PhoneNet is 3000 feet.  I would find it hard to believe that your
lab has 3000 feet of wire (that about 3/5 mile).

The problem might be that you've got too many nodes on the network.  It seems
as though the 4 SE's are further (counting the number of nodes the signal
goes through) from the Mac II than all others.  You might want to try buying
some repeaters (two would probably be enough) to boost the signal.  Or, think
about getting a bridge.  Although, traffic would probably not be reduced,
because most of the traffic is probably directed to the Mac II & LW's.  Not
much traffic between SE's, right?  I'm assuming that this is a "public" cluster
with few AppleTalk applications.

> 
> 	Thanks in Advance.
> 
>
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