[HPADM] Slow FTP Summary

From: Andrews, Mark R (mark.r.andrews@boeing.com)
Date: Wed Jun 04 2003 - 14:03:53 EDT


Many thanks to all who responded including:
Dan Butler
David Lodge
Corne Beerse
Andy Cranston
Joel Breger
Rizwan Mohammed Abdul Shafique
You guys got it right......

 Here's the original question:

I hope it's OK to post this question here. I'm having trouble with some a
Sun Ultra 10 running Solaris 2.6. It is my development server so I am doing
all of my coding and testing on this device, then ftp'ing the finished
product to 3 Sun E450 servers also running Solaris 2.6. The ftp between the
Ultra 10 and the E450's is incredibly slow i.e. 50K will take 20 minutes. If
I ftp from the Ultra 10 to one of my HPUX servers, it runs at a typical
speed. If I use Hummingbird's ftp to transfer files from the Ultra 10 to the
E450's it works fine. Any idea what could be causing this? BTW all 4 servers
are physically co-located and running on the same subnet and ftp's between
the E450's work fine, it's only the ftp between the Ultra 10 and the E450's
that is slow.

Almost everyone thought that I had incompatible network card settings
(although there were a few that suggested I throw the Sun boxes out the
window and buy HP). Dan Butler pointed me to a handy script on Sunsolve
called test-interfaces.ksh which utilizes the ndd command to determine
network interface information. Sure enough the settings on my Ultra 10 were
10MB Half Duplex, the E450's were set to 100mb Full Duplex. The actual
culprit in all of this was the settings at the switch that the Ultra 10 was
connected to.
Thanks again to everyone who took the time to respond. This is an incredible
group.

Mark Andrews
Senior Computer Specialist
BCA-Long Beach Division
(562) 496-5144
e-mail: mark.r.andrews@boeing.com

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