Path: utzoo!utgpu!water!watmath!clyde!cbosgd!ucbvax!SCCGATE.SCC.COM!oconnor
From: oconnor@SCCGATE.SCC.COM (Michael J. O'Connor)
Newsgroups: comp.protocols.tcp-ip
Subject: Re: routing problems?  Core gateways?
Message-ID: <8801151520.AA04835@sccgate.scc.com>
Date: 15 Jan 88 15:20:35 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Distribution: world
Organization: The ARPA Internet
Lines: 19

Brian,
	Your problem is similar to the one we experience with PSN 7.0
software.  In our case, the incoming VC would be created but only one
packet would be received.  If we pinged the origin of the VC, traffic
would begin flowing.  The problem was attributed to the new PSN code
expecting an X.25 RR after the first packet which our X.25 didn't provide.
This was a change from PSN 6 behavior.  We also set up a periodic pinging
of the mailbridges in order to keep mail flowing (the suggestion came from
BBN).
	What is dissimilar is the fact that we are an Arpanet node while
you are Milnet.  I didn't think PSN 7.0 was to be installed in the Milnet
just yet so unless someone slipped up reloading your PSN I don't know how
you could have the same problem as us.
	We are using Sun's X.25 in our gateway and were told that only Sun
users experienced the "hung VC" problem with PSN 7.0.
	I'd be interested to know whether or not you have the resources to
determine whether you get no incoming packets on the bad VCs or just one.

			Mike