Bug ID 632838: Deterministic NAT performance may be degraded

Last Modified: Nov 07, 2022

Bug Tracker

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

Known Affected Versions:
13.0.0, 13.0.0 HF1, 13.0.0 HF2, 13.0.0 HF3, 13.0.1

Fixed In:
13.1.0

Opened: Dec 09, 2016
Severity: 3-Major

Symptoms

Deterministic NAT performance may be degraded compared to performance in 12.1.x.

Impact

CPU utilization will be higher, and the system may pass traffic with less speed.

Conditions

Deterministic NAT configuration in use in version 13.0.

Workaround

Enable the db variable pva.fwdaccel to see DNAT performance improve with a fastL4 profile.

Fix Information

Deterministic NAT performance and scalability is improved relative to 13.0.0. Forward flow acceleration is always on for Deterministic NAT.

Behavior Change