Bug ID 655628: TCP analytics does not release resources under specific sequence of packets

Last Modified: Sep 13, 2023

Affected Product(s):
BIG-IP AVR, LTM(all modules)

Known Affected Versions:
12.1.0, 12.1.1, 12.1.2, 13.0.0, 13.0.0 HF1, 13.0.0 HF2, 13.0.0 HF3

Fixed In:
13.1.0, 13.0.1, 12.1.3

Opened: Apr 06, 2017

Severity: 2-Critical


TCP analytics does not release memory when a specific sequence of packets is observed, and memory usage increases as more such flows occur.


Main memory occupied by TCP analytics is not released which might lead to memory exhaustion on the BIG-IP system.


-- A TCP analytics profile is configured to collect clientside/serverside analytics data. -- AVR is provisioned. -- FastL4 and HTTP profiles are configured. -- A specific sequence of packets (on the serverside) occurs.


Turn off collecting TCP analytics data for the virtual server.

Fix Information

TCP analytics now releases resources properly.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips