Bug ID 793005: 'Current Sessions' statistic of MRF/Diameter pool may be incorrect

Last Modified: Nov 01, 2019

Bug Tracker

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

Known Affected Versions:
13.1.0, 13.1.0.1, 13.1.0.2, 13.1.0.3, 13.1.0.4, 13.1.0.5, 13.1.0.6, 13.1.0.7, 13.1.0.8, 13.1.1, 13.1.1.1, 13.1.1.2, 13.1.1.3, 13.1.1.4, 13.1.1.5, 13.1.3, 13.1.3.1, 14.0.0, 14.0.0.1, 14.0.0.2, 14.0.0.3, 14.0.0.4, 14.0.0.5, 14.0.1, 14.0.1.1, 14.1.0, 14.1.0.1, 14.1.0.2, 14.1.0.3, 14.1.0.4, 14.1.0.5, 14.1.0.6, 14.1.2, 14.1.2.1, 15.0.0, 15.0.1

Opened: Jun 13, 2019
Severity: 5-Cosmetic

Symptoms

In MRF/Diameter deployment, the LTM pool 'Current Sessions' statistics may show an unusually large number, such as 18446744073709551606.

Impact

'Current Sessions' statistics can be used to track number of pending requests in the queue. When it underflows, the number becomes useless, making troubleshooting more difficult.

Conditions

There is a Diameter answer that does not match a pending request, the answer message is dropped, but BIG-IP system still decrements the 'Current Sessions' counter. If the counter is already zero, it can underflow.

Workaround

None.

Fix Information

None

Behavior Change