Alcatel Carrier Internetworking Solutions Omni Switch/Router - Manual (Page 550)

Mobile Groups
Page 19-8
Secondary Group
Switch ports and devices may become members of multiple mobile groups. A switch port
starts in its default group, which initially is also its primary group. The primary group may
change if the move_from_def variable is enabled. Any subsequent mobile groups to which a
port gains membership beyond the primary group are “secondary” mobile groups. A port can
age out of these secondary groups if the move_to_def variable is enabled (see diagram on
page 19-11).