Command History Release


This command was introduced.

Usage Guidelines

Do not use this command unless you clearly understand why you want to change the default value.

If your TCP window size is set to 1000 bytes, for example, you could have 1 packet of 1000 bytes or 2 packets of 500 bytes, and so on. However, there is also a limit on the number of packets allowed in the window. There can be a maximum of 5 packets if the connection has TTY; otherwise there can be 20 packets.


The following example sets the TCP window size to 1000 bytes:

ip tcp window-size 1000

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