Bug ID 2291313: Azure/Hyper-V BIG-IP VE uses only a fraction of available memory

Last Modified: May 05, 2026

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

Known Affected Versions:
17.5.0, 17.5.1, 17.5.1.2, 17.5.1.3, 17.5.1.4, 17.5.1.5, 17.5.1.6, 21.0.0, 21.0.0.1

Opened: Apr 30, 2026

Severity: 3-Major

Symptoms

On Azure and Hyper-V deployments, BIG-IP VE allocates memory, but TMM only uses a small portion of it. In larger instances, a significant amount of memory remains unused.

Impact

Reduced memory available for traffic processing. Larger instance sizes do not provide a proportional memory benefit to TMM.

Conditions

BIG-IP VE is deployed on Microsoft Azure or Hyper-V with multiple data interfaces.

Workaround

None

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips