Path: utzoo!mnetor!uunet!lll-winken!lll-tis!ames!pasteur!ucbvax!CUNIXA.COLUMBIA.EDU!cck
From: cck@CUNIXA.COLUMBIA.EDU (Charlie C. Kim)
Newsgroups: comp.protocols.appletalk
Subject: AlisaTalk and KIP
Message-ID: <8805041441.AA01360@columbia.edu>
Date: 4 May 88 14:42:25 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 45

Nobody has really outlined their configuration, so I assume they are
all the "simple" case: one kbox connected to a ethernet and localtalk.

First, let me note that IP functionality does not mean that AppleTalk
will work correctly.  There are items in atalkatab used for AppleTalk
routing that are not used when doing IP.

Now, there are couple of items to examine.

1. "Chooser" shows the names.

Well, this tells us that something is working :-), but that's about
it.  There are number of senarios that allow this to work without
allow full functionality.  One in particular I outline below.

2. Connects do not work/Kbox not responding to ZIP query packets.

Yes, this is a clue.  My guess is that the RTMP "Here I am" packets
being sent by the KBOX are being ignored or the ZIP query packet is
out of sync with what KIP is expecting.  KIP 1/88 sends the RTMP
packets on EtherTalk as Short DDP.  This is technically within
specifications, but not the recommended method (all packets on
EtherTalk should be Long DDP).  It is possible that AlisaTalk is
ignoring these short RTMP "Here I am" packets (that identify) and thus
does not know where the bridge is.  This can be verified by (a)
contacting the publisher of AlisaTalk or (b) see following.  The RTMP
request packet should be sent to the 'nearest known bridge' (should be
the EtherTalk kbox -- this is (b) above).  If it is getting sent the
nearest bridge and no response is coming back then there is probably
something about the packet that KIP 1/88 does not like.

If someone verifies
	(a) Short DDP packets on EtherTalk are not accepted by AlisaTalk
then this can be fixed easily (well, it is a pain, but easy enough) or
if they are accepted then
	(b) Grab a copy of the RTMP request packet going to the KBOX
and send it to me.  I'll try to figure out what's going on with it.

As far as names showing up in chooser and disappearing.  This usually
happens when many packets are getting dropped (and is usually a
hardware problem, but can also be due to very very heavy congestion or
problems with inter-bridge communications).

Charlie C. Kim
User Services
Columbia University