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  2. MIDRANGE-L
  3. April 2003

RE: TCP/IP Performance

Chris,

The MTU on the line is 1496. On the routers it is 1500.   For today the 
average packet size being transmitted was 1348 bytes. Our network person 
says everything looks okay on the router on the receiving end.  I am not 
sure how I would check if it is bottle necked on the target system. 

Mark Garton
DR Team Leader
O'Reilly Auto Parts





Start looking at your MTU on your routers.  What is the average size of 
the
data packets being sent.  Tune your MTU on the routers and AS400's, both
sides, to 1. match all the way around, 2. Size it for your average packet
size + TCP/IP overhead.

Also is the bottle neck on the receiving system?  Increase Base memory, 
that
is where your communication buffers are.

HTH,

Chris Bipes

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