You canenable or disable IP mobility in a virtual AP profile (IP mobility is enabled by default).When IP mobility is
enabledin a virtualA P profile, the ESSID that is configuredfor the virtual AP supports layer-3 mobility. If you
disable IP mobility for a virtual AP , any clients that associate to the virtual AP will not have mobility service.
Configuring a Mo bility Domain
You configuremobi lity domains on master Dell controllers. All local Dellc ontrollersmanaged by the master
controllershare the list of mobility domains configured on the master. Mobility is disabled by default and must be
explicitly enabledon all Dell controllers that will support client mobility. Disabling mobility does not delete any
mobility-relatedc onfiguration.
The homeagent table (HAT) maps a user VLAN IP subnet to potential home agent addresses.The mobility feature
uses the HAT table to locate a potential home agent for each mobile client, and then uses this information to
performhome agent discovery. To configure a mobility domain, you must assign a home agent address to at least
one controllerwit h direct access to the user VLAN IP subnet. (Some network topologies may require multiple home
agents.)
Dell recommendsyou configure the switch IP address to match the AP ’s localcontroller
or
definet he Virtual Router
RedundancyProt ocol(V RRP) IP addresst omatc hthe VRRP I P usedfor controller redundancy.Do not configure
both a switch IP address and a VRRP IP address as a home agent address, or multiplehome agent discoveries may
be sent to the controller.
NOTE:All userVLANs that are part ofa m obility domain must have an IP addressthat can correctly forward layer-3 broadcast
multicasttraffic to clients when they are away from home network.
Configurethe HAT with a list of every subnetwork, mask, VLAN ID, VR RP IP, and home agent IP address in the
mobility domain. Include an entry for every homeagent and user VLAN to which an IP subnetwork maps. If there is
more thano necontroller in the mobility domain providing service for the same user VLAN, you must configure an
entry fort heV LAN for eachc ontroller.Dell recommends using the sameV RRP IP used by the AP.
The mobility domain named “default” is the default active domain for all Dell controllers.If y ou needo nlyo ne
mobility domain, you can use this default domain. However, you also have the flexibility to create one or more user-
defineddomains to meet the uniqueneeds of your network topology. Once you assign a controller to a user-defined
domain, it automatically leaves the “default” mobility domain. If you want a controller to belong to both the
“default”and a user-defined mobility domain at the same time, you must explicitly configure the “default” domain
as an active domain for the controller.
Using the WebUI
The followingprocedure illustrates configuring mobility domain on a master controller.
1. Navi gate to the Configuration >Advanced Services >IP Mobility page. Select the Enable IP Mobility
checkbox.
2. To configuret hedefault mobility domain, select the “default” domain in the Mobility Domain list.
To create a new mobility domain, enter the nameof the domain in Mobility Domain Name and click Add; the
new domain name appearsi n the Mobility Domain list.
3. Select the newly-created domain name. Click Add under the Subnet column.Enter the subnetwork, mask, VLAN
ID, VRIP, and home agent IP address and click Add. Repeat this step for each HAT entry.
4. Click Apply.
Using the CLI
The followingco mmandconfigures mobility do main on a master controller.
router mobile
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