Bug ID 985749: TCP exponential backoff algorithm does not comply with RFC 6298

Last Modified: Jan 06, 2023

Bug Tracker

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

Known Affected Versions:
15.1.0, 15.1.0.1, 15.1.0.2, 15.1.0.3, 15.1.0.4, 15.1.0.5, 15.1.1, 15.1.2, 15.1.2.1, 15.1.3, 15.1.3.1, 15.1.4, 15.1.4.1, 15.1.5, 15.1.5.1, 15.1.6, 15.1.6.1, 15.1.7, 15.1.8, 15.1.8.1

Opened: Jan 21, 2021
Severity: 3-Major

Symptoms

The algorithms used for TCP exponential backoff are different for SYN and non-SYN packets.

Impact

Retransmission timeout interval depends on the inclusion/exclusion of SYN flag.

Conditions

Using TCP.

Workaround

None

Fix Information

None

Behavior Change