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MQSeries.net Forum Index » General IBM MQ Support » MQ Series TCP/IP data packet size

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msuggala
PostPosted: Wed Nov 20, 2002 2:10 pm    Post subject: MQ Series TCP/IP data packet size Reply with quote

Novice

Joined: 06 Sep 2001
Posts: 11
Is it possible to configure TCP/IP data packet size in MQ Series?
Or MQ uses network settings?. If MQ uses network values, how can I find the data packet size that MQ using?.
One of my application guy wants to know why MQ using very less packet size (538 bytes)

Thanks for your help!.
- Murthy
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Murthy Suggala
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kolban
PostPosted: Wed Nov 20, 2002 4:27 pm    Post subject: Reply with quote

Grand Master

Joined: 22 May 2001
Posts: 1072
Location: Fort Worth, TX, USA
This is an interesting question. I would have imagined that MQ would be making TCP/IP socket calls to send messages across channels. I can't imagine that it would even know about number of bytes/packet. That is hidden by the TCP/IP implementation through fragmentation.
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bower5932
PostPosted: Thu Nov 21, 2002 7:41 am    Post subject: Reply with quote

Jedi Knight

Joined: 27 Aug 2001
Posts: 3023
Location: Dallas, TX, USA
I'd have to agree with kolban that what you are seeing is being done by tcp/ip itself. There is a section in the Intercommunication manual that gives buffer sizes based on platform/protocol and the numbers are 16K (os/400) and 32K (other platforms) for tcp/ip. The text is in the Writing and Compiling Channel-exit programs section of Chapter 46.
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