Mobile Groups
Page 19-10
How a Port’s Primary Mobile Group Changes (move_from_def)
Default/Primary
Port assigned to default
group 1 or another group
through crgp or addvp.
Mobile Group 1
If move_from_def is enabled....
Device on port matches poli-
cy in another mobile group
(3). Group 3 becomes prima-
ry group.
Default Group 1
Primary Group 3
Helpful Hints:
• Reduces broadcasts to the default group.
• Best used when only one device is
attached to each port.
If move_from_def is disabled....
Default/Pri
Device on port matches poli-
cy in another mobile group
(3). Group 1 remains primary
group. Group 3 is now a
“secondary” group for this
port.
Mobile Group 1
Secondary
Mobile Group 3
Why disable move_from_def?
• When multiple devices are attached to
the switch port, the port must support
multiple traffic in the default group as
well as traffic in the secondary mobile
groups.
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