Three physical interfaces have been added to the link-group group.

If any interface in group A fails, the system sets the status of other interfaces in the group to down.

Any interface in group B fails, and the status of other interfaces in the group does not change.

After the interfaces in the group are restored to normal, the interfaces in the entire group are reset to up.

After all the interfaces in the group are restored, the interfaces in the entire group are reset to up.