Bug ID 1121013: A blade enters a failed state and traffic across the chassis is disrupted.

Last Modified: Jun 19, 2025

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

Known Affected Versions:
17.1.0, 17.1.0.1, 17.1.0.2, 17.1.0.3, 17.1.1, 17.1.1.1, 17.1.1.2, 17.1.1.3, 17.1.1.4, 17.1.2, 17.1.2.1, 17.1.2.2

Opened: Jun 23, 2022

Severity: 3-Major

Symptoms

Traffic across the entire chassis will be disrupted. /var/log/ltm will show a message from clusterd such as "Marking slot <nr> SS_FAILED". In "tmsh show sys cluster", blade availability will be "unknown" and clusterd state will be "shutdown".

Impact

Traffic will not be forwarded across the entire chassis.

Conditions

-- A chassis platform. -- Clusterd heartbeats from a remote blade fail to arrive. This can happen for many reasons such as Linux kernel driver issues.

Workaround

Reboot the blade in the failed state.

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips