topic Re: FTP with Unix in Operating System - OpenVMS

FTP with Unix

Mgr Sys Adm USI — Fri, 30 Jul 2004 05:03:18 GMT

I try to transmit files via FTP, between Alpha server (running OVMS 7.2-1 TCPIP V5.0A ECO 1) and Unix machine.

Depending on the type of transfer, I got different results:
- sending to Unix, good transfer rate
- sending to Alpha BAD transfer rate with a lot of timeout

The problem seem to be not on Unix, because sending the same file Unix to Unix is OK.

Have someone ideas on the problem ?

Thanks and regards

Re: FTP with Unix

Wim Van den Wyngaert — Fri, 30 Jul 2004 05:22:59 GMT

Could you post a tcptrace ?
$ tcptrace /full/pack=1000 unix_name /out=trace.txt

Re: FTP with Unix

Bojan Nemec — Fri, 30 Jul 2004 07:05:17 GMT

Hi,

What about switch settings? If the Alpha server is connected to a switch , disable speed autonegotiation on the switch!

Bojan

Re: FTP with Unix

Antoniov. — Fri, 30 Jul 2004 07:49:44 GMT

Hi,
two server are on same network or in WAN? Because if connection line is widebroadband it's assimetric bandwidth.
If you are on same network, disable autonegotation.

Antonio Vigliotti

Re: FTP with Unix

Wim Van den Wyngaert — Fri, 30 Jul 2004 08:02:57 GMT

Just checked how ftp reacts if I set the network connection to no full duplex while it should be full duplex.

Receive as well as sending files : 3 K/sec.
The test was done with 2 AXP's.

Wim

Re: FTP with Unix

Mgr Sys Adm USI — Fri, 30 Jul 2004 08:31:16 GMT

The problem was in the switch port setting.
Changed from autonegotiaton to 100/Full now FTP work fine in both case (sending & receiving)
Thanks to all.

Re: FTP with Unix

Martin Vorlaender — Fri, 30 Jul 2004 08:38:41 GMT

Just FYI:

The rule of thumb "disable auto-negotiation" no longer applies with the Intel-based Ethernet cards.

BUT: Regardless whether you switch off (or on) auto-negotiation, be sure to have the same setting on both ends.

A switch port set to auto-negotiate will _not_ talk 100MBit with an Ethernet cards fixed to Fast Full Duplex.

cu,
Martin

Re: FTP with Unix

Uwe Zessin — Fri, 30 Jul 2004 13:22:19 GMT

Good point, Martin.

I know from my colleague that the Tru64 Unix people have written a detailled guide on how to set up the network cards for their TruCluster Server environment.

Does something like this exist for the OpenVMS world?