Bug ID 515139: Active FTP session with inherit profile and address translation disabled may not decrement pool member current connections statistics

Last Modified: Sep 13, 2023

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

Known Affected Versions:
11.4.1, 11.6.0, 11.6.1, 11.6.2, 11.6.3, 11.6.3.1, 11.6.3.2, 11.6.3.3, 11.6.3.4, 11.6.4, 11.6.5, 11.6.5.1, 11.6.5.2, 11.6.5.3, 12.1.0 HF1, 12.1.0 HF2, 12.1.1 HF1, 12.1.1 HF2, 12.1.2 HF1, 12.1.2 HF2

Fixed In:
12.0.0, 11.5.3 HF2

Opened: Mar 30, 2015

Severity: 3-Major

Related Article: K17067

Symptoms

Current connections seen in the poolmember statistics via tmsh might show a non-decremented number over time.

Impact

The current connections statistics value does not decrement upon data connection closure. While this is primarily cosmetic, it might impact connections when used in combination with limit calculations.

Conditions

This occurs when the following conditions are met: - FTP virtual server with address translate disabled. - FTP profile with inherit parent profile. - Active FTP session. Running the command: tmsh show ltm pool pool_name.

Workaround

Disable inherit parent profile in the FTP profile.

Fix Information

The BIG-IP system now correctly represents the pool current connections in the specific configuration combination.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips