FTP with Unix

[Mgr Sys Adm USI]

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

[Wim Van den Wyngaert]

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

[Bojan Nemec · Accepted solution]

Hi,

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

Bojan

[Antoniov.]

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

[Wim Van den Wyngaert]

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

[Mgr Sys Adm USI]

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.

[Martin Vorlaender]

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

[Uwe Zessin]

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?