Bug ID 819281: HSB and switch interface pause frames

Last Modified: Feb 11, 2023

Bug Tracker

Affected Product:  See more info
BIG-IP TMOS(all modules)

Known Affected Versions:
12.1.0, 12.1.0 HF1, 12.1.0 HF2, 12.1.1, 12.1.1 HF1, 12.1.1 HF2, 12.1.2, 12.1.2 HF1, 12.1.2 HF2, 12.1.3,,,,,,,, 12.1.4,, 12.1.5,,,, 12.1.6

Opened: Aug 30, 2019
Severity: 3-Major


The interface between the HSB and switch may experience a high number of pause frames, which can be observed in the switch interface stats counters.rx_pause value. This may also be seen by impacted traffic in the ltm logs, such as lacpd errors: -- info lacpd[8992]: 01160010:6: Link 2.3 removed from aggregation -- info lacpd[8992]: 01160011:6: Link 2.3 Actor Out of Sync -- info lacpd[8992]: 01160012:6: Link 2.3 Partner Out of Sync


Network traffic is dropped.


This issue can occur if there are hardware-accelerated flows and IPv6 traffic.


Although there is no workaround, the fix for this issue has been added to HSB firmware images for BIG-IP v14.1.x. This includes the B4450N and iSeries platforms.

Fix Information


Behavior Change