You can enable or disable IP mobility in a virtual AP profile (IP mobility is enabled by default). When IP mobility is enabled in a virtual AP profile, the ESSID that is configured for 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 Mobility Domain

You configure mobility domains on master Dell controllers. All local Dell controllers managed by the master controller share the list of mobility domains configured on the master. Mobility is disabled by default and must be explicitly enabled on all Dell controllers that will support client mobility. Disabling mobility does not delete any mobility-related configuration.

The home agent 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 perform home agent discovery. To configure a mobility domain, you must assign a home agent address to at least one controller with direct access to the user VLAN IP subnet. (Some network topologies may require multiple home agents.)

Dell recommends you configure the switch IP address to match the AP’s local controlleror define the Virtual Router Redundancy Protocol (VRRP) IP address to match the VRRP IP used for controller redundancy. Do not configure both a switch IP address and a VRRP IP address as a home agent address, or multiple home agent discoveries may be sent to the controller.

NOTE: All user VLANs that are part of a mobility domain must have an IP address that can correctly forward layer-3 broadcast multicast traffic to clients when they are away from home network.

Configure the HAT with a list of every subnetwork, mask, VLAN ID, VRRP IP, and home agent IP address in the mobility domain. Include an entry for every home agent and user VLAN to which an IP subnetwork maps. If there is more than one controller in the mobility domain providing service for the same user VLAN, you must configure an entry for the VLAN for each controller. Dell recommends using the same VRRP IP used by the AP.

The mobility domain named “default” is the default active domain for all Dell controllers. If you need only one mobility domain, you can use this default domain. However, you also have the flexibility to create one or more user- defined domains to meet the unique needs 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 following procedure illustrates configuring mobility domain on a master controller.

1.Navigate to the Configuration > Advanced Services > IP Mobility page. Select the Enable IP Mobility checkbox.

2.To configure the default mobility domain, select the “default” domain in the Mobility Domain list.

To create a new mobility domain, enter the name of the domain in Mobility Domain Name and click Add; the new domain name appears in 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 following command configures mobility domain on a master controller.

router mobile

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