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

Last Modified: May 29, 2024

Affected Product(s):
BIG-IP LTM(all modules)

Known Affected Versions:
13.1.0,,,,,,,,, 13.1.1,,,,, 13.1.3,,,, 14.0.0,,,,,, 14.0.1,, 14.1.0,,,,,, 14.1.2,,,,,,, 15.0.0, 15.0.1,,,,, 15.1.0,,,,

Fixed In:

Opened: Jun 13, 2019

Severity: 5-Cosmetic


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


'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.


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.



Fix Information

'Current Sessions' statistics of MRF/Diameter pool reports correctly.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips