Bug ID 463470: Active Translation Mappings count is too high

Last Modified: Feb 13, 2019

Bug Tracker

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

Known Affected Versions:
11.3.0, 11.4.0, 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

Fixed In:
11.6.0, 11.5.2

Opened: May 20, 2014
Severity: 3-Major
Related AskF5 Article:
K16034

Symptoms

In addition to mappings used by successful connections, the Active Translation Mappings count incorrectly counts some pending translation mappings that ultimately are unused. These translation mappings are not active and should not be counted. Additionally, the Active Translation Mappings count is not decremented for these pending translation mappings when the mapping is recovered and made available for new connections.

Impact

Because of the miscounting, the Active Translation Mappings count tends to grow over time and become much larger than the connection count. The high count does not represent a memory leak or translation endpoints that are not available.

Conditions

The high counts are associated with connection failures and can occur with heavy traffic or when there is a limited number of available translation endpoints.

Workaround

None

Fix Information

The Active Translation Mappings now count only translation mappings that are actively in use.

Behavior Change