Extreme Networks Summit WM3000 Series Reference Manual page 286

Controller Services
2 Select the Use Default Management Interface checkbox to use the controller's default management
interface IP address for MUs roaming amongst different Layer 3 subnets. The IP address displayed
to the right of the checkbox is used by Layer 3 MU traffic.
3 If wanting to use a local IP addresses (non controller management interface) for MUs roaming
amongst different Layer 3 subnets, select the Use this Local Address checkbox and enter an IP address.
4 Use the Roam Interval to define maximum length of time MUs within selected WLAN are allowed to
roam amongst different subnets.
5 Refer to the table of WLANs and select the checkboxes of those WLANs you wish to enable Layer 3
mobility for.
Once the settings are applied, MUs within these WLANs can roam amongst different subnets.
6 Select the Enable Mobility checkbox to enable a MU to maintain the same Layer 3 address while
roaming throughout a multi-VLAN network.
7 Select the All WLANs On button to enable mobility for each WLAN listed.
If unsure if you want to enable mobility for each WLAN, manually select just those you want to
enable.
8 Select the All WLANs Off button to disable mobility for each WLAN listed.
9 Click the Apply button to save the changes made within this screen. Clicking Apply overwrites the
previous configuration.
10 Click the Revert button to disregard any changes made within this screen and revert back to the last
saved configuration.
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Summit WM3000 Series Controller System Reference Guide