Last Modified: Sep 13, 2023
Affected Product(s):
BIG-IP LTM
Known Affected Versions:
12.1.2, 12.1.3, 12.1.3.1, 12.1.3.2, 12.1.3.3, 12.1.3.4, 12.1.3.5, 13.0.0
Fixed In:
13.1.0, 13.0.0 HF1, 12.1.3.6
Opened: Oct 07, 2016 Severity: 4-Minor
TCP Lossfilter function doesn't work properly, although the first few losses will be properly ignored.
Sending rate declines due to packet losses improperly interpreted as congestion.
TCP profile has ALL of the following settings: mptcp disabled; rate-pace disabled; tail-loss-probe disabled; fast-open disabled; cmetrics-cache-timeout = 0; congestion ctrl is reno, new-reno, high-speed, or scalable; nagle enabled or disabled; rtx_thresh = 3; loss-filter settings are both > 0. an iRule changes any of the above settings except loss-filter.
Change any of the conditions above.
Properly handle loss-filter state when switching TCP stacks.