Bug ID 649914: Auto reselect does not work for cookie persistence

Last Modified: Aug 19, 2026

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

Known Affected Versions:
13.0.0, 13.0.0 hf1, 13.0.0 hf2, 13.0.0 hf3, 13.0.1

Opened: Mar 08, 2017

Severity: 3-Major

Symptoms

A connection failure occurs when a pool member picked by cookie persistence goes down.

Impact

Connection failure. The BIG-IP system tries to persist to the pool member that's down.

Conditions

-- Configure cookie persistence. -- Make a connection to get a cookie. -- Force the pool member down. -- Make a connection with the same cookie.

Workaround

None.

Fix Information

None

Behavior Change

Previous behavior: The cookie is not deleted when reselecting a pool member. New behavior: The BIG-IP system removes cookie persistence for the server-side traffic when pool-member reselect fails (e.g., Connection Limit)

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips