AIX 4.3.3 - FTP

[alfa1024]

Hi everyone!

Does anyone know if there is a way to increase the speed of FTP on an AIX box. I find it is really slow.

 

[bi]

When I had a problem with ftp speed on an aix box, it turned out to be a network problem. But you should check the speed of your network card, first. Make sure it is set at 100 full duplex. I also had an IBM person tell me the AutoNegotiate was better, but I was never fully convinced of that.

 

[alfa1024]

Thanks. The card is at full duplex and is also on full duplex switch. Can't detect any network problems. FTP from other boxes seem fine. I am wondering if the FTP program on the AIX box is limited to a certain speed? May be far fetched.

 

[franksoprano]

bi,

I completely agree with you about staying away from the "Auto-Configuration" setting, that is best used as a last resort, unless using a GIG-E Card...

 

[sectorseveng]

Couple of things to check:
1) Network options.
Ensure that the networks allow option rfc1323 (no -o rfc1323=1).
Also check for the values of thewall, tcp_sendspace, tcp_recvspace & tcp_mssdflt, you may need to change them.

What is the base hardware of the system? Note, MCA boxes have a limit of 262144 for thewall .
What is the oslevel?
How much memory do you have?

2) Try running a traceroute between source/target systems to show if the mtu is being renegotiated.

 

[fieldcoma]

Try reading the redbook study guide communications, it will give you lots of information regarding no-settings, ftp trouble shooting and so on.

 

[alfa1024]

Thanks guys!! Info helped alot.