Last Modified: Apr 28, 2025
Affected Product(s):
BIG-IP LTM
Known Affected Versions:
12.1.0, 12.1.0 HF1, 12.1.0 HF2, 12.1.1, 12.1.1 HF1, 12.1.1 HF2, 12.1.2, 12.1.2 HF1, 12.1.2 HF2, 12.1.3, 12.1.3.1, 12.1.3.2, 12.1.3.3, 12.1.3.4, 12.1.3.5
Fixed In:
13.0.0, 12.1.3.6
Opened: Jul 14, 2016 Severity: 3-Major
Although the user has configured TCP Analytics to store statistics for a certain entity, it reports data for that entity in a single "Aggregated" row.
Defect eliminates nearly all data granularity for TCP Analytics.
ALL of these conditions must be true: The TCP Analytics profile is attached to a virtual with both clientside or serverside collection turned off in the profile. TCP profile has mptcp, rate-pace, tail-loss-probe, fast-open, AND enhanced-loss-recovery all disabled. Also, Nagle, send-buffer, receive-window, proxy-buffer are not in AUTO mode. Finally, rexmt-thresh is 3 and the congestion control algorithm is not delay-based (NewReno, HighSpeed, Cubic). Regrettably, this matches the default TCP profile. An iRule enables TCP-Analytics when disabled by default in the tcp-analytics profile.
Change the TCP profile on the virtual to violate any of the conditions listed above. The easiest is probably to enable rate pace or mptcp. For all affected versions, this will result in a noticeable CPU performance penalty.
Load entity information for both TCP stacks.