From: Dr. David Kirkby (drkirkby@ntlworld.com)
Date: Fri Jul 18 2003 - 22:34:32 EDT
Hi,
I have a Dec Alpha Personal Workstation 600a as a home computer,
running Tru64 5.1B. I had some problems with the SSH version in Tru64
some time back when trying to use passwordless connections to systems
running OpenSSH. In the end I installed an OpenSSH server on the Dec
Alpha.
I thought OpenSSH would solve all my problems, but now I have another,
which may or may not be related.
In order to copy via scp a file of say 2 Mb from the Sun Ultra 80 to
the Alpha, it can take about a minute using full-duplex 100 Mbit/s
ethernet. Sometimes the transfer stalls and times out, but usually
only after over half the file is transferred. Most times it does
eventually transfer the file, but after a long time.
Moving the same file between the Sun and other machines (IBM RS/6000,
HP, PC etc.), there are no such problems. All these machines run the
same version of ssh as on the Alpha. Copying via sftp, rather than scp
from the Sun to the Alpha works okay too.
The Sun is running Solaris 9 and Sun's version of SSH, which is based
on OpenSSH, but with some tweaks by Sun. The Dec Alpha is running
OpenSSH_3.6p1, SSH protocols 1.5/2.0, OpenSSL 0x0090607f
I know there might be some problems in not using the ssh supplied with
Tru64, but I believe this will only affect large clusters, not single
user workstations. Hence I don't think the switch to OpenSSH should
cause problems, but it seems to be if I use scp.
The Dec Alpha is configured to auto-negotiate the ethernet speed. If
forced to full-duplex, it actually runs half-duplex. I understand this
is not unusual with low-end 3COM switches. I can't recall how the Sun
is configured, but it's been working for over a year with no hassle.
Any suggestions how to solve this?
-- Dr. David Kirkby, Senior Research Fellow, Department of Medical Physics, University College London, 11-20 Capper St, London, WC1E 6JA. Tel: 020 7679 6408 Fax: 020 7679 6269 Internal telephone: ext 46408 e-mail davek@medphys.ucl.ac.uk
This archive was generated by hypermail 2.1.7 : Sat Apr 12 2008 - 10:49:27 EDT