[comp.protocols.appletalk] ZIP questions

tony@scotty.dccs.upenn.edu (Anthony Olejnik) (06/06/91)

The zone list that I see on my EtherTalk connected Mac in the
chooser (obtained by the ZIP function "GetZoneList") is a superset
of the zone list that I see in the control panel (under the Network
CDEV and Ethertalk icon (obtained by the ZIP function "GetLocalZones")).

This presents a problem for users whose zone is not seen in the control
panel; they cannot select their zone to make it their 'home' or individual
default zone.  They can still access AppleTalk services via the chooser
(since *ALL* zones appear there), however for administrative purposes
they would like to be associated with their own zone.

QUESTIONS:

	1.) Since we share a common ethernet backbone, I'm expecting
            both zone lists to be identical.  Why isn't it?
	    (I suspect an improperly configured AppleTalk router)

	2.) Using Watch (*GREAT* program from Cayman), I`m able to
            determine which router is responding to each request.
            How come sometimes I see the *SAME* router responding
            differently to each of the requests?  Is this my
            improperly configured router?

	3.) Again, using Watch, How come I sometimes see *DIFFERENT*
            routers responding to each of the requests?  Is it random
            that a different router just so happened to respond each
            time?  I was under the impression that in AppleTalk Phase
            2, your Mac keeps, in its own internal table, the address of
            the router it last 'heard' from.  If so, shouldn't it
            always try to query that particular router?

Any help would be *GREATLY* appreciated.

Thanks in advance.

--Tony Olejnik
  Network Engineer
  University of Pennsylvania
  Data Communications and Computing Services
  3401 Walnut Street
  Suite 221A
  Philadelphia, Pennsylvania 19104-6228
  (215) 898-9408
  tony@scotty.dccs.upenn.edu