Bug ID 499950: In case of intra_cluster ha, node flapping may still lead to inconsistent persistence entries across TMMs

Last Modified: Jul 18, 2026

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

Known Affected Versions:
11.5.1, 11.5.1 hf1, 11.5.1 hf2, 11.5.1 hf3, 11.5.1 hf4, 11.5.1 hf5, 11.5.1 hf6, 11.5.1 hf7, 11.5.1 hf8, 11.5.1 hf9, 11.5.1 hf10, 11.5.1 hf11, 11.5.2, 11.5.2 hf1, 11.6.0, 11.6.0 hf1, 11.6.0 hf2, 11.6.0 hf3, 11.6.0 hf4, 11.6.0 hf5, 11.6.0 hf6, 11.6.0 hf7, 11.6.0 hf8, 11.6.1, 11.6.1 hf1, 11.6.1 hf2, 11.6.2, 11.6.2 hf1, 11.6.3, 11.6.3.1, 11.6.3.2, 11.6.3.3, 11.6.3.4, 11.6.4, 11.6.5, 11.6.5.1, 11.6.5.2, 11.6.5.3

Fixed In:
12.0.0, 11.5.3

Opened: Jan 07, 2015

Severity: 3-Major

Related Article: K16802

Symptoms

Inconsistent persistence entries across TMMs.

Impact

Inconsistent persistence behaviors.

Conditions

This occurs under the following conditions are met: -- intra_cluster HA configuration. -- node flapping.

Workaround

Add an iRule command to the PERSIST_DOWN event that deletes the persistence entry for this connection. One example might be: when PERSIST_DOWN { persist delete source_addr [IP::client_addr] } For more information, see SOL14918: Node flapping may cause inconsistent persistence records, available here: http://support.f5.com/kb/en-us/solutions/public/14000/900/sol14918.html.

Fix Information

An issue involving inconsistent behavior of persistence across TMMs is fixed.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips