Bug ID 1042589: Wrong trunk_id is associated in bcm56xxd.

Last Modified: Jan 14, 2022

Bug Tracker

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

Known Affected Versions:
13.1.0,,,,,,,,, 13.1.1,,,,, 13.1.3,,,,,,, 13.1.4,, 14.1.0,,,,,, 14.1.2,,,,,,,,, 14.1.3,, 14.1.4,,,,,, 15.1.0,,,,,, 15.1.1, 15.1.2,, 15.1.3,, 15.1.4,, 15.1.5, 16.0.0,, 16.0.1,,, 16.1.0, 16.1.1, 16.1.2,

Opened: Aug 24, 2021
Severity: 3-Major


When a set of interfaces are moved from one trunk to another, the now empty trunk is left with a valid association in bcm56xxd, and deleting that trunk can cause a valid trunk to be removed in the BCM hardware. 'tmsh show net trunk MY_TRUNK' shows the trunk is UP, but in fact the trunk is unconfigured in hardware.


May cause an L2 traffic loop.


Moving the interfaces across trunks. i.e. tmsh modify net trunk MY_OLD_TRUNK interfaces none tmsh modify net trunk MY_NEW_TRUNK interfaces add { 1.1 1.2 } tmsh delete net trunk MY_OLD_TRUNK



Fix Information


Behavior Change