Last Modified: Apr 28, 2025
Affected Product(s):
BIG-IP LTM
Known Affected Versions:
12.0.0, 12.0.0 HF1, 12.0.0 HF2, 12.0.0 HF3, 12.0.0 HF4, 12.1.0, 12.1.0 HF1, 12.1.0 HF2, 12.1.1, 12.1.1 HF1, 12.1.1 HF2, 12.1.2, 13.0.0
Fixed In:
13.1.0, 13.0.0 HF1, 12.1.2 HF1
Opened: Oct 05, 2016 Severity: 3-Major Related Article:
K38094257
When you modify the connection.vlankeyed database key, some asymmetrically routed connections unexpectedly fail.
Some connections using asymmetrical routing do not reach their destination.
This issue occurs when the following condition is met: You modify the connection.vlankeyed database key. For example, you set the database key value to disable. For more information, refer to K13558: Allowing asymmetrically routed connections across multiple VLANs (11.x - 13.x) :: https://support.f5.com/csp/article/K13558.
Restarting TMM resolves the issue, though this briefly interrupt traffic so should be performed during a maintenance window. To do so, run one of the following tmsh commands: -- On an appliance (BIG-IP platform): bigstart restart tmm -- On a clustered system (a VIPRION or VIPRION-based vCMP guest): clsh bigstart restart tmm
Asymmetrically routed connections no longer fail with Connection.VlanKeyed disabled.