Bug ID 475109: [GTM] offline pools (status red) should be excluded for load balance

Last Modified: Apr 10, 2019

Bug Tracker

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

Known Affected Versions:
10.2.0, 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, 11.5.4 HF2, 11.5.4 HF3, 11.5.4 HF4, 11.5.5, 11.5.6, 11.5.7, 11.5.8, 11.5.9

Opened: Aug 09, 2014
Severity: 3-Major

Symptoms

If dns profile with "Unhandled Query Actions" set to "Reject", dns queries could return successfully every other query and REFUSED every other query too. If dns profile with "Unhandled Query Actions" set to "Allow", dns queries might return differently for wideip and its alias

Impact

DNS queries might get REFUSED even though there are other pools available.

Conditions

1. Wideip contains some UP and some DOWN pools. 2. Return2DNS LB method configured as failback for pools.

Workaround

Modify the pools to use 'none' as the Fallback Load Balancing Method

Fix Information

None

Behavior Change