Last Modified: Sep 13, 2023
Affected Product(s):
BIG-IP LTM
Known Affected Versions:
11.5.0, 11.5.1, 11.5.2, 11.5.3, 11.5.4, 11.5.5, 11.5.6, 11.5.7, 11.5.8, 11.5.9, 11.5.10, 11.6.0, 11.6.1, 11.6.2, 11.6.3, 11.6.3.1, 11.6.3.2, 11.6.3.3, 11.6.3.4, 11.6.4, 11.6.5, 11.6.5.1, 11.6.5.2, 11.6.5.3, 12.0.0, 12.0.0 HF1, 12.1.0 HF1, 12.0.0 HF2, 12.1.0 HF2, 12.1.1 HF1, 12.1.1 HF2, 12.1.2 HF1, 12.1.2 HF2
Fixed In:
12.1.0, 12.0.0 HF3
Opened: Nov 23, 2015 Severity: 3-Major
At times, CHD congestion control can store a very large congestion window, resulting in release of data well beyond that warranted by network conditions.
Possible network congestion.
The client advertises a receive window less than 1 MSS, and CHD tries to decrease the window.
Change congestion control algoirhtm from CHD.
This fix checks the bounds on the congestion window when CHD congestion control is enabled.