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Mobile Groups
Page 19-5
Mobile Groups
Switch ports can be dynamically assigned to mobile groups through AutoTracker policies.
Support for dynamic port assignment is one of the main differences between mobile groups
and non-mobile groups. AutoTracker rules are assigned directly to a mobile group. In
contrast, AutoTracker rules are assigned to the VLANs within a non-mobile group. No
AutoTracker VLANs are contained within a mobile Group, and each mobile group constitutes
a single spanning tree.
A switch port can belong to multiple mobile groups, whereas a switch port can belong to
only one non-mobile group. However, a port can not belong to a mobile and a non-mobile
group at the same time.
Ports can be assigned to mobile groups either statically or dynamically. A port is statically
assigned to a mobile group when one of the following occurs:
• Port by default assigned to default group 1
• Port assigned to a group through
crgp or addvp commands
Although switch ports can belong to multiple mobile groups, it is not possible to assign a port
to two different groups using the
addvp command. However, a switch port could be assigned
to one mobile group via the addvp command and then gain membership to another mobile
group by matching the policy criteria for that group.
A switch port is dynamically assigned to a mobile group after one of its attached devices
matches an AutoTracker policy for that mobile group. An overview of how ports and devices
are dynamically assigned to mobile Groups can be found in How Ports Are Assigned to Groups
on page 19-2.
Authenticated Groups
Mobile groups provide the added flexibility of user-authentication policies. Using Authentica-
tion Management Console (
AMC) software, you can configure mobile groups to use log-in
procedures as a means of assigning group membership. Mobile groups that use authentica-
tion are a special group type called an Authenticated Group. Authenticated Groups are
described in more detail in the Switch Network Services User Manual.
Configuring Mobile Groups
You configure mobile Groups through the crgp command. During the crgp procedure you
will receive a prompt asking if you want to create a mobile Group
Enable Group Mobility on this Group ? [y/n] (n):
You must answer Yes to this prompt to set up a mobile group. After this question, you will be
asked to configure virtual ports and AutoTracker policies for the Group. Documentation for
the full crgp procedure can be found in Creating a New Group on page 19-18.