Bug ID 1756313: TMM crashes with LTM monitor configured.

Last Modified: Nov 29, 2025

Affected Product(s):
BIG_IP_NEXT(CNF) CNF(all modules)

Known Affected Versions:
1.3.2, 1.3.3

Fixed In:
1.4.0

Opened: Nov 27, 2024

Severity: 2-Critical

Symptoms

The TMM pod crashes periodically with the LTM monitor configured.

Impact

Traffic disrupted while tmm restarts.

Conditions

-- DNS, ICMP, or TCP LTM monitor is configured. -- The VLAN used by the monitor traffic has a non-default value cmp-hash configured.

Workaround

Set the VLAN cmp-hash property value to default.

Fix Information

The TMM pod no longer crashes and traffic is not disrupted.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips