ftp performance

[Gian Luca Gobbi]

Hi forum,

I have a problem with ftp perfromance.
From a Windows system to an HP-UX system I get slow ftp and from this HP-UX system to Windows is the same.
But this problem doesn't appear from my computer with Windows and a Sun Solaris system and then I think that the problem is about HP-UX side.
Ping and telnet work fine.
Name resolution is ok.

I hope on your hints, thanks!

Gian Luca

[Robert-Jan Goossens · Accepted solution]

Goodmorning Gian Luca,

Check your LAN speed and duplex settingd on the HPUX box, attached a script.

Regards,
Robert-Jan

[Sunil Sharma_1]

Hi,

Check you network setting at both ends
in switch and HP Server.it should be same.
no auto negotiation.


Sunil

[Gian Luca Gobbi]

I don't know what is the speed on switch but I know the speed of HP-UX system. By FANTASTIC!!! script of Robert:

Card at PPA 0 - IP Address: 10.1.1.254 - Speed = 100 Full-Duplex Auto-Negotiation-OFF

How to know what is the speed on switch side in order to set the same speed on HP-UX system? Also I think to set Auto-Negotiation ON, have you experiences about it to set ON? Are there known problems?

Thanks again for your useful helps!!!

[Antoniov.]

Hello Gian Luca
in VMS area we have already same problem because due to Hub/Switch configuration. The telnet protocol is less sense to this problem.

Bye
Antoniov
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[Also a little of Italian tongue in this forum] :-P
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Ciao Gian Luca
nella sezione VMS abbiamo avuto un problema analogo al tuo dovuto alla configurazione del Hub/Switch; il protocollo telnet per sue caratteristiche risente meno di questo problema.

[rick jones]

_if_ you have a duplex mismatch, and the interface is reporting full-duplex, then lanadmin -g mibstats should also report FCS errors.

_if_ you have a duplex mismatch, and the interfaces is reporting half-duplex, then lanadmin -g mibstats should also report _late_ collisions.

otherwise, you do not have a duplex mismatch - well, if I were to be _really_ picky you at least are not driving the interface in a way to expose one.

[Gian Luca Gobbi]

Rick you are right at the first point:

lanadmin reports FCS errors. Sure, there is a mismatch between switch speed and HP-UX speed.
Lan card file configuration sees as follows (exactly is hpbase100conf):

HP_BASE100_INTERFACE_NAME[0]=lan0
HP_BASE100_STATION_ADDRESS[0]=
HP_BASE100_SPEED[0]=100FD

I think to set Auto-Negotiation ON, have you experiences about it to set ON? Are there known problems?

[Gian Luca Gobbi]

Guys, I launched

# lanadmin -X AUTO_ON 0

and ftp works fine.
In this way I think to set Auto-Negotiation ON and the speed is set automatically.
Do you know about any known problems with Auto-Negotiation ON?

Thanks!
Gian Luca

[Pete Randall]

Gian Luca,

If it works OK for you, then don't worry about it. However, the standard recommendation is to *NOT* let 100 Base/T auto-negotiate. It just doesn't (normally) work very well and the solution is to force both the switch and the NIC to 100FD without auto-negotiate.

But, as I said, if it's working for you and you see no other problems, then go with it!


Pete

[rick jones]

I have always been a proponent of letting everything autoneg until it is proven that something cannot autoneg and cannot be either fixed or replaced.