Bug ID 476097: TCP Server MSS option is ignored in verified accept mode

Last Modified: Feb 13, 2019

Bug Tracker

Affected Product:  See more info
BIG-IP All(all modules)

Known Affected Versions:
11.3.0, 11.4.0, 11.4.1, 11.5.0, 11.5.1, 11.5.1 HF1, 11.5.1 HF10, 11.5.1 HF11, 11.5.1 HF2, 11.5.1 HF3, 11.5.1 HF4, 11.5.1 HF5, 11.5.1 HF6, 11.5.1 HF7, 11.5.1 HF8, 11.5.1 HF9, 11.5.2, 11.5.2 HF1, 11.5.3, 11.5.3 HF1, 11.6.0, 11.6.0 HF1, 11.6.0 HF2, 11.6.0 HF3, 11.6.0 HF4, 11.6.0 HF5

Fixed In:
12.0.0, 11.6.0 HF6, 11.5.3 HF2, 11.4.1 HF9

Opened: Aug 19, 2014
Severity: 3-Major
Related AskF5 Article:
K15274113

Symptoms

After enabling 'verified-accept' in the TCP profile, window scaling is not working on server side connection. More specifically, the BIG-IP system ignores window scaling from the back-end server.

Impact

the BIG-IP system ignores window scaling from the back-end server.

Conditions

Enabling 'verified-accept' in TCP profile.

Workaround

Disable 'verified-accept' in the TCP profile.

Fix Information

Window scaling with back-end server now works when 'verified-accept' is enabled in the TCP profile.

Behavior Change