Bug ID 1127117: High Memory consumption for NAT translations of NAPT/PBA End Point Independent modes

Last Modified: Dec 07, 2023

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

Known Affected Versions:
15.0.0, 15.0.1,,,,, 15.1.5,, 15.1.6,, 15.1.7, 15.1.8,,, 16.0.0,, 16.0.1,,, 17.0.0,,

Fixed In:
17.1.0, 16.1.4, 15.1.9

Opened: Jul 18, 2022

Severity: 3-Major


Memory consumption increases with the number of connections.


Memory keeps increasing and eventually might reach 100% utilization. Sample Comparison table below: Connection_Count: 30M Memory_Usage_on_14.x_Version: ~3GB Memory_usage_on_15+_Version: ~30GB


1. Configure LSN Pool in CGNAT with Persistence mode with Address and Port. OR 1. Configure AFM NAT source Translations with DPAT and PBA with End Point Independent Mode


-- Increase the available RAM if possible OR -- Reduce the connection timeout interval OR -- Try using other options like Address Pooling Paired Mode in PBA

Fix Information


Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips