Path: utzoo!mnetor!uunet!lll-winken!lll-lcc!ames!ucbcad!ucbvax!SRI-NIC.ARPA!STJOHNS
From: STJOHNS@SRI-NIC.ARPA (Michael St. Johns)
Newsgroups: comp.protocols.tcp-ip
Subject: UVax ULTRIX Blues
Message-ID: <12362433592.14.STJOHNS@SRI-NIC.ARPA>
Date: 29 Dec 87 22:35:56 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The ARPA Internet
Lines: 27

I'm in the process of trying to get a micro vax II running Ultrix
up and operational on an ether net behind a cisco gateway attached
to the Arpanet.  I am experiencing some problems.

When I try to transfer (FTP or TELNET) more data
than will fill a 512 byte TCP segment, the connection hangs
on me.  This transfer is either by doing something like "more /etc/termcap"
or starting an FTP transgfer of a file larger than 512 bytes .

Here's the kicker... this only happens on transfers outbound
from the micro vax, inbound transfers seems to work fine.  

Transfers on the same ethernet seem to work fine in either direction and
with any amount of data.

Raw PINGs seems to work fine for ANY size ping packet.  In either direction.

We've swapped the ether interface card in the gateway
with no effect.

Has anyone else seen this type of behavior?  This is an ULTRIX 2.0
system (binary version *sigh*) so I haven't been able
to peek real closely at the innards.

Help!

Mike
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