Bug ID 435296: Some TCP connection statistics were too high after a reset of virtual server statistics.

Last Modified: Nov 22, 2021

Bug Tracker

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

Known Affected Versions:
10.2.3, 10.2.4, 11.0.0, 11.1.0, 11.2.0, 11.2.1, 11.3.0, 11.4.0, 11.4.1

Fixed In:
11.5.0

Opened: Oct 24, 2013
Severity: 3-Major
Related Article:
K14963

Symptoms

After TCP virtual server statistics are reset, the counters for open connections, close_wait, fin_wait, time_wait, and accepts remained too high.

Impact

The customers cannot rely on our TCP statistics: you may have for example 100 open connections, but if you reset virtual server stats enough times, the system may report 1 billion open connections. Additionally, this doesn't affect only our customers. We have hundreds of support engineers that every day try to solve cases with the data contained in our qkviews. Having incorrect statistics about the TCP connections can be misleading for F5 support personnel too.

Conditions

The TCP virtual server statistics were reset while the counters for open connections, close_wait, fin_wait, time_wait or accept were not zero.

Workaround

Don't reset the TCP virtual server statistics.

Fix Information

A reset of statistics for a TCP virtual server will no longer cause the counters for the number of open connections, close_wait, fin_wait, time_wait or accepts to remain high.

Behavior Change