RE: Intermittent problem with FTP client V5R2 over PPP

["Urbanek, Marty" <Marty_Urbanek@xxxxxxxxxxxx>]

Carl,

I bet you're just having good ol' fashioned modem problems maintaining the 
connection. Can you tell, after the PPP lockup, whether the modems have 
actually lost their connection (perhaps status of line description)?

I am not familiar with the 7258 but I was never a big fan of the 7852-400 
compared to IBM's older "serious" modems.

Kind of tough since you don't have physical access. Given that restriction, I 
would try to find the commands to add to the modem initialization string, 
perhaps even a change in the LIND, that would DECREASE the speed of the 
connection between the two modems (DCE-to-DCE rate) perhaps to 14400 or even 
9600. Also, I would try telling the modem NOT to dynamically try to negotiate a 
higher rate during the connection. Basically just make things real easy on the 
modems and see if that improves the consistency of your PPP link. Sure this is 
going to hurt your performace but if the reliability improves markedly then 
you'll know where the problem lies.

My two cents.

-Marty

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date: Fri, 3 Dec 2004 12:06:38 -0500
from: "Carl Galgano" <cgalgano2@xxxxxxxxxxxxxxxxx>
subject: RE: Intermittent problem with FTP client V5R2 over PPP

Marty, all good suggestions.  
The comm adapters are different between my machine and the customers, also
the modems, I am using a UDS V.3xxx and the customer is using an IBM
7258-400.
The standard IBM FTP client does hang as well.  Sometimes it works
perfectly, other times it does not.  The modem is external, but I am in
Atlanta, with the systems group, the AS400 and other hardware is in Omaha,
so looking at the modem is out.  They have a production box I am going to
load up as well and see if the problem follows the box, the OS or the
hardware.  That will give me an idea where to hunt next.  It appears the
entire PPP link locks up, rather than just my FTP session.
cjg