Bug 1333

Summary:	Wrong initial estimation after reset in RttEstimator
Product:	ns-3	Reporter:	Alex Afanasyev <alexander.afanasyev>
Component:	tcp	Assignee:	Adrian S.-W. Tam <adrian.sw.tam>
Status:	RESOLVED DUPLICATE
Severity:	normal	CC:	ns-bugs, tommaso.pecorella
Priority:	P5
Version:	ns-3-dev
Hardware:	All
OS:	All
See Also:	https://www.nsnam.org/bugzilla/show_bug.cgi?id=1351
Bug Depends on:	1351
Bug Blocks:
Attachments:	Patch

Description Alex Afanasyev 2012-01-03 14:00:48 UTC

Upon reset, initial estimation in RttEstimator is set to 1ns.  As a result, on large-RTT links (>minRTT) there is always timeout, real RTT is never calculated, and congestion window cannot grow beyond initial value.

The following patch introduces a new variable to remember the initial estimate configured by ns-3 object system

Comment 1 Alex Afanasyev 2012-01-03 14:01:22 UTC

Created attachment 1295 [details]
Patch

Comment 2 Adrian S.-W. Tam 2012-01-03 14:39:29 UTC

Confirm about this bug. I will post here again when the bug is fixed in ns-3-dev tree.

Comment 3 Tommaso Pecorella 2012-03-21 13:54:01 UTC


*** This bug has been marked as a duplicate of bug 1351 ***