Bug ID 745261: The TMM process may crash when the 'cmp-hash' of a VLAN is set to a non-default value.

Last Modified: Feb 05, 2019

Bug Tracker

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

Known Affected Versions:
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, 12.1.2 HF1, 12.1.2 HF2, 12.1.3, 12.1.3.1, 12.1.3.2, 12.1.3.3, 12.1.3.4, 12.1.3.5, 12.1.3.6, 12.1.3.7, 12.1.4

Opened: Sep 26, 2018
Severity: 3-Major

Symptoms

When Direct Server Return (DSR) or asymmetric routing with a tunnel is deployed, the TMM process may crash if the 'cmp-hash' setting of a VLAN is set to a non-default value.

Impact

The TMM process crashes and traffic disrupted.

Conditions

There are two scenarios that may lead to this issue: Scenario 1: DSR - DSR is deployed. - The 'cmp-hash' setting of a VLAN is set to a non-default value. Scenario 2: Asymmetric routing - The sys db variable connection.vlankeyed is set to 'disable'. - A VLAN and a tunnel are used to handle asymmetric routing. - The 'cmp-hash' setting of a VLAN is set to a non-default value.

Workaround

Keep the 'cmp-hash' setting of a VLAN to the default value.

Fix Information

None

Behavior Change