Bug ID 663051: BIG-IP trunk goes down after MLAG peer disconnect

Last Modified: Oct 16, 2023

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

Known Affected Versions:
12.1.2, 12.1.3,,,,,,,, 12.1.4,, 12.1.5,,,, 12.1.6, 13.0.0, 13.0.0 HF1, 13.0.0 HF2, 13.0.0 HF3, 13.0.1

Opened: May 04, 2017

Severity: 3-Major


When a BIG-IP trunk is connected to an Arista multi-chassis link aggregation (MLAG) pair, the trunk may go completely down if the Arista MLAG peer link is disconnected.


Entire trunk goes down. Note: This is a race condition that is an issue with the Arista MLAG configuration and not the BIG-IP system behavior. According to Arista, the issue appears to be limited to the Arista 7050 switches.


-- BIG-IP system connected to Arista MLAG switch pair. -- Trunk with two or more physical interfaces. -- Interfaces spanning both of the MLAG peers. -- Arista MLAG peer link is disconnected.



Fix Information


Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips