Path: utzoo!news-server.csri.toronto.edu!rutgers!cs.utexas.edu!uunet!shl!phil
From: phil@shl.com (Phil Trubey)
Newsgroups: comp.dcom.lans
Subject: TELNET slow through bridge.
Message-ID: <1991Mar11.161437.13053@shl.com>
Date: 11 Mar 91 16:14:37 GMT
Organization: SHL Systemhouse Inc.
Lines: 31

I have a problem.  We have just connected an HP 3000 computer to a remote LAN
connected to a campus ethernet through a 56 kbps line and bridge:

PCs, Vax, etc   ===========B---------B======  HP 3000
            Campus ethernet  56 kbps   Remote ethernet

The problem is with ordinary telnet sessions from PCs on the campus ethernet 
to the remote ethernet to the HP 3000.  You can start a telnet session fine
from a PC to the HP.  Intermittantly, when you display a large amount of
text on the screen, the telnet session slows to a crawl.  You can see the
individual packets coming through, one every few seconds.  The problem
fixes itself after about 30 seconds of this, and then activity is normal
again, until the next time it happens.  This occurs with a single telnet
session active through the bridge.

We are running Wollongong's TCP/IP package on the HP, and used both FTP's
PC/TCP and Wollongong's Win/TCP on the PCs.  The problem occurs more
frequently with FTP's software.

Interestingly enough, if we telnet from a terminal attached to the VAX, this
problem does not occur.

The campus ethernet has lots of hosts and PCs on it, the remote ethernet
has just the bridge and HP 3000 connected to it.

Any ideas?

-- 
Phil Trubey
SHL Systemhouse Inc.
(Internet: phil@shl.com      UUCP: ...!uunet!shl!phil)