[comp.protocols.appletalk] TOPS Problems!

fc156111@seas.gwu.edu (Timothy A. Waire Jr.) (12/01/90)

We are having problems with one of our small LocalTalk networks.  This network
consist of 5 Mac IIs daisy chained together with 3 printers.  It looks like the
following:
 
     ___   ___   ___   ___   ___   ___   ___   ___
    | 1 | | 2 | | 3 | | 4 | | 5 | | 6 | | 7 | | 8 |
    |   |_|   |_|   |_|   |_|   |_|   |_|   |_|   |
    |___| |___| |___| |___| |___| |___| |___| |___|
 
1   Printer
2-4 Mac IIs
5   FileServer
6-7 Printers
8   Mac II
 
Mac II #8 is the problem Mac.  It can see all devices on the network except #5
the fileserver (a IIx with seperate folders published via TOPS).  All other
Macs can see each other and the problem Mac (#8).
 
We tested with InterPoll and Mac #8 cannot see Mac #5 by this method either.
All the obvious solutions have been attempted: replacing PhoneNet boxs, cables
etc...
 
The fileserver does not have a monitor so we are not positive that it can see
Mac #8.
 
Help!

-- 
Timothy A. Waire, Jr. (Whitegold)            Executive Office of the President
INTERNET: fc156111@seas.gwu.edu              Office of Management & Budget 
The George Washington University             Washington, D.C.  20503 
Electrical Engineering & Computer Science    (202) 395-4922 

pyrros@cis.udel.edu (Christos Pyrros) (12/03/90)

>We are having problems with one of our small LocalTalk networks. 
>All the obvious solutions have been attempted: replacing PhoneNet boxs, cables
>etc...

We have been using TurboNET ST's (made by NuvoTech) lately.  They have a
very useful feature: diagnostic LED's which indication data transmissions.
In addition, they are automatically self-terminating (!) and provide
distances up to 5000 feet w/o addition gadgets.

They make troubleshooting much easier, and are about the same price as 
PhoneNET connectors.