Bug ID 1012009: MQTT Message Routing virtual may result in TMM crash

Last Modified: Jan 20, 2023

Bug Tracker

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

Known Affected Versions:
15.1.0, 15.1.0.1, 15.1.0.2, 15.1.0.3, 15.1.0.4, 15.1.0.5, 15.1.1, 15.1.2, 15.1.2.1, 15.1.3, 15.1.3.1, 15.1.4, 16.0.0, 16.0.0.1, 16.0.1, 16.0.1.1, 16.0.1.2, 16.1.0, 16.1.1, 16.1.2, 16.1.2.1, 16.1.2.2, 16.1.3, 16.1.3.1, 16.1.3.2, 16.1.3.3, 17.0.0, 17.0.0.1, 17.0.0.2

Fixed In:
15.1.4.1

Opened: Apr 16, 2021
Severity: 3-Major

Symptoms

The BIG-IP system provides an option to use Message Routing virtual servers for MQTT traffic. It uses a different approach to associate a client side and a server side than a standard virtual server. In some instances, a server side is incorrectly handled.

Impact

Traffic disrupted while tmm restarts.

Conditions

-- A Message Routing virtual with MQTT protocol. -- A client attempts to reconnect.

Workaround

None

Fix Information

When a client attempts to reconnect, and an existing server side connection is used, TMM correctly handles the connection's state and no longer crashes for this reason.

Behavior Change