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

Last Modified: Dec 02, 2022

Bug Tracker

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

Known Affected Versions:
15.0.0, 15.0.1, 15.0.1.1, 15.0.1.2, 15.0.1.3, 15.0.1.4, 15.1.0, 15.1.0.1, 15.1.0.2, 15.1.0.3, 15.1.0.4, 15.1.0.5, 15.1.1, 15.1.2, 15.1.2.1, 15.1.3, 15.1.3.1, 15.1.4, 15.1.4.1, 15.1.5, 15.1.5.1, 15.1.6, 15.1.6.1, 15.1.7, 15.1.8, 16.0.0, 16.0.0.1, 16.0.1, 16.0.1.1, 16.0.1.2, 17.0.0, 17.0.0.1

Opened: Jul 18, 2022
Severity: 3-Major

Symptoms

Memory consumption increases with the number of connections.

Impact

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

Conditions

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

Workaround

-- 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

None

Behavior Change