Bug ID 427475: CGNAT: TMM cores when running low on translation addresses and ports

Last Modified: Feb 13, 2019

Bug Tracker

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

Known Affected Versions:
11.4.0, 11.4.1

Fixed In:
11.5.0, 11.4.1 HF2, 11.4.0 HF4

Opened: Aug 08, 2013
Severity: 2-Critical
Related AskF5 Article:
K14897

Symptoms

TMM core error under higher load, particularly when running low on translation addresses and ports.

Impact

Traffic disrupted while tmm restarts.

Conditions

lsn-pool configured with NAPT or a DNAT backup pool More exposed: small range of addresses and lots of traffic. But can happen anytime.

Workaround

None

Fix Information

CGNAT: TMM no longer cores when running low on translation addresses and ports.

Behavior Change