Bug ID 1289029: Toggling lag-type can sometimes cause an F5OS LACP aggregation to pass traffic while the peer does not have LACP configured.

Last Modified: May 29, 2024

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

Opened: Apr 14, 2023

Severity: 3-Major

Symptoms

An F5OS LACP aggregation can sometimes allow traffic to pass when it should not.

Impact

Traffic will pass on an aggregation when LACP has not negotiated for affected interfaces.

Conditions

1) With peer devices that cause link status to flap on aggregation configurations: Toggle F5OS aggregation lag-type from LACP, to STATIC. Toggle peer aggregation from LACP to STATIC. Toggle F5OS aggregation lag-type from STATIC to LACP. 2) Create an aggregation interface with STATIC lag-type, change the lag-type to LACP, then create a lacp interface. Configure the peer aggregation as a STATIC aggregation.

Workaround

Disable, then enable affected interfaces.

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips