Bug ID 1196085: Disabling and re-enabling a port on rSeries can leave the port in a DOWN state

Last Modified: May 29, 2024

Affected Product(s):
F5OS Velos(all modules)

Known Affected Versions:
F5OS-A 1.3.0, F5OS-A 1.3.1

Fixed In:
F5OS-A 1.4.0, F5OS-A 1.3.2

Opened: Nov 29, 2022

Severity: 2-Critical

Related Article: K000132166


Disabling a port and then re-enabling it can result in the port staying DOWN.


Port stays DOWN and traffic is impacted.


Port Disable followed by Port Enable. The condition is aggravated when the port "enable" follows the "disable" too quickly. For example port "enable" within 15 seconds of the port "disable".


There is no guaranteed workaround. Sometimes disabling/re-enabling the port on the other side will bring the port back up. Also, waiting 30-45 seconds before re-enabling the port minimizes the risk of this issue occurring.

Fix Information

Improve port "disable" such that subsequent port "enable" does not leave the port DOWN.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips