TCP Buffer window size is not getting updated

[Saurav Dasgupta]

Hi,

We are facing the issue with TCP connection buffer size.

TCP session is up. By default the rx buffer window size is 64k.Traffic flow is fine. When the buffer size is increased while connection is up, rx buffer window size is updated automatically with the new value.
But if we decrease the buffer size below the default value i.e. 64k, window size is not getting updated. To get it updated, we need to prune the connection and setup with the new value(which is lesser than the default window size).

Is this a expected behavior in FreeBSD IP stack. Currently we are using FreeBSD v7.2.

Thanks and Regards,
Saurav

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