Bug 1860

Summary:	TCP needs the Window Scale option
Product:	ns-3	Reporter:	Tommaso Pecorella <tommaso.pecorella>
Component:	internet	Assignee:	George Riley <riley>
Status:	RESOLVED FIXED
Severity:	enhancement	CC:	m.kheirkhah, ns-bugs, tomh
Priority:	P5
Version:	ns-3-dev
Hardware:	All
OS:	All

Description Tommaso Pecorella 2014-02-18 17:45:29 UTC

http://tools.ietf.org/html/rfc1323

The discussion is here:
https://groups.google.com/forum/#!topic/ns-3-users/V6NLMQaTAEg

Without the WSopt, the TCP throughput is limited in high bandwidth-delay networks, e.g.:
P2P link, 100Mbps, 10ms delay (20ms RTT) -> 20Mbps max TCP throughput (between 25 and 26 considering the IP and P2P headers overhead).

Note: the above example isn't very high bandwidth-delay !

Comment 1 Tom Henderson 2014-02-21 13:40:55 UTC

There is an active codereview for this:
https://codereview.appspot.com/24900043/

We expect it to be merged for ns-3.20, once comments are resolved.

Comment 2 Tommaso Pecorella 2014-09-07 15:35:00 UTC

Added in changeset 10885:462d70f54ada