Bug ID 571573: Persistence may override node/pmbr connection limit

Last Modified: Oct 10, 2018

Bug Tracker

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

Known Affected Versions:
11.4.1, 11.5.0, 11.5.1, 11.5.1 HF1, 11.5.1 HF10, 11.5.1 HF11, 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, 11.5.2, 11.5.2 HF1, 11.5.3, 11.5.3 HF1, 11.5.3 HF2, 11.5.4, 11.5.4 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, 12.0.0, 12.0.0 HF1, 12.0.0 HF2, 12.0.0 HF3, 12.0.0 HF4

Fixed In:
12.1.0, 11.6.1 HF2, 11.5.4 HF2

Opened: Feb 03, 2016
Severity: 3-Major
Related AskF5 Article:
K20320811

Symptoms

In certain circumstances the BIG-IP system may load balance connections to a node or poolmember over the configured connection limit.

Impact

BIG-IP system may load balance connections to a node or pool member over the configured connection limit.

Conditions

- Node or pool member configured with connection limit. - L4 or L7 virtual server. - Persistence configured on the Virtual Server. - Very high load on unit.

Workaround

Remove persistence or use another method of limiting the connections (rate limiting or connection limit on the Virtual Server).

Fix Information

The BIG-IP system now correctly enforces the pool member/node connection limit.

Behavior Change