Bug ID 421964: One-way packet loss on a LACP-enabled link and link aggregation

Last Modified: Nov 07, 2022

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

Known Affected Versions:
11.2.0, 11.2.1, 11.3.0, 11.4.0, 11.4.1, 11.5.0, 11.5.1, 11.5.1 HF1, 11.5.1 HF10, 11.5.1 HF11, 11.5.1 HF2, 11.5.1 HF3, 11.5.1 HF4

Fixed In:
11.6.0, 11.5.1 HF5, 11.4.1 HF6, 11.2.1 HF11

Opened: May 28, 2013

Severity: 3-Major

Related Article: K15964


When there is one-way packet loss on a LACP-enabled link, the packet-loss side BIG-IP system still aggregates the LACP link.


Unidirectional packet loss causes only one unit to remove link from LACP aggregation


LACP configured.



Fix Information

BIG-IP system now correctly aggregates an LACP-enabled link.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips