Bug ID 483719: vlan-groups configured with a single member VLAN result in memory leak

Last Modified: Sep 13, 2023

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

Known Affected Versions:
11.4.1, 11.5.0, 11.5.1, 11.5.2, 11.5.3, 11.6.0, 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, 11.6.1, 11.5.4

Opened: Oct 09, 2014

Severity: 2-Critical

Related Article: K16260


If a vlan-group contains only a single member VLAN, tmm begins to leak memory as observed in 'tmctl memory_usage_stat'.


Continuous memory leaks might eventuallyresult in traffic disruptions.


Configure a vlan-group with a single member VLAN.


Remove vlan-groups containing a single member VLAN or configure at least two member VLANs per vlan-group

Fix Information

Single-member vlan-groups no longer leak memory.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips