Bug ID 1797681: F5OS device fails to block port based on STP path cost

Last Modified: Oct 19, 2025

Affected Product(s):
F5OS F5OS-A(all modules)

Known Affected Versions:
F5OS-A 1.8.0, F5OS-A 1.8.3

Opened: Jan 30, 2025

Severity: 2-Critical

Symptoms

F5OS fails to change the port to BLOCK based on STP Path Cost.

Impact

The port is not blocked in the STP topology which leads to loop.

Conditions

Large path cost applied to a port that is still in a Forwarding state.

Workaround

None

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips