tcp scale window

[carl_townshend]

Hi all

Can amyone tell me what this is and what it is for? is it the amount of data that can be sent without an ack ?

[Joseph W. Doherty]

It provides a method to have a receive window larger than permitted by the original TCP specification (16 bits, or 64K). You can "scale" the 16 bit value by some power of 2.

[carl_townshend]

what is the receive window?

[Joseph W. Doherty]

You might start here:

http://en.wikipedia.org/wiki/TCP_tuning, where RWIN (TCP receive window) is mentioned. Much more can be found if you use an Internet search engine.