Martin, 

You could downgrade your TCPIP buffer sizes and other TCPIP parameters
on your Stack.

However, IMHO 

I would go with setting up Quality of Service (QoS) mechanisms on your
CISCO router, if FTP traffic is impacting your interactive workload. 


Kevin 


-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[email protected]] On
Behalf Of Martin Kline
Sent: Tuesday, June 09, 2009 4:13 PM
To: [email protected]
Subject: Throttling FTP

We have some large batch FTP processes that were recently identified as
the 
cause of major network slowdowns for online processing. More
specifically, 
one of our CIP routers becomes a bottleneck when batch FTP jobs start 
flooding it.

We are working on a process to ensure that particular FTP batch
processes 
are run on a system that will not affect the problem router.

IFAIR, VTAM has/had pacing options that could help manage just this sort
of 
situation. Does FTP or TCPIP have a similar capability? I found nothing
in the 
FTP configuration about throttling or pacing. Maybe someone else has run
into 
a similar situation. How did or would you deal with this situation?

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