[comp.protocols.appletalk] Appletalk routing between ethernets

bjb@pyramid.pyramid.com (Bruce Beare) (05/12/89)

We have a large network with several ethernets and several appletalk
networks. The ethernets are connected together via gateway (unix)
boxes. The appletalk networks are connected via either a Gatorbox or
a Fastpath. Here is a simplified sketch of the topology:


       ------------------------------------------------- AT'net1
       FP1
       |
======================================================== E'net1
|
|
UGW1
|
|
======================================================== E'net2
|
|
UGW2
|
|
======================================================== E'net3
       |
      GB1
       ------------------------------------------------- AT'net2


We have static routings for the appletalk sub-nets set up on
UGW1 (Unix gateway 1) and UGW2. NCSA telnet will work from either
appletalk network.

The problem is that Macs on AT'net1 can not see the zones or the
printers on AT'net2 (and vice-versa). I believe that the problem is
that UGW1 and UGW2 (quite properly) don't forward the broadcast
packets that the chooser depends upon.

Perhaps the simplest solution to this problem would be to write
programs for UGW1 and UGW2 that performs the appletalk broadcast
routing. I am looking for such a program. Please send me any
information on the existence of such a program - or the code!

Bruce Beare
Pyramid Technology