HP Manager Software manual Getting Started

90CHAPTER 3: GETTING STARTED

Defining a Mobility A Mobility Domain is a collection of WX switches that work together to

Domainsupport roaming users. One of the WX switches is defined as a seed device, which distributes information to the other WX switches defined in the Mobility Domain.

A Mobility Domain allows users to roam geographically from one WX switch to another without losing network connectivity. Users connect as a member of a VLAN through their authorized identities. If the native VLAN for a user is not present on the WX to which the user connects, the WX creates a tunnel to that VLAN.

A network plan can contain more than one Mobility Domain. Standalone

WX switches and third-party APs do not need to be configured within a

Mobility Domain.

You use 3WXM to create a Mobility Domain and define its seed device and the other WX switches in the Mobility Domain. If you already have WX switches installed and configured, you can upload the configurations of the switches to 3WXM to have them included in a Mobility Domain.

Roaming Behavior For a client session to be considered a roaming session (and not a new session), the following criteria must be met:

„The client associates or reassociates with a MAP in the Mobility Domain, and the client already has a session on a different MAP in the Mobility Domain. The existing session can be in one of two states:

„Active—The normal state for a client that has left radio range without sending a request to disassociate

„Deassociated—The state of a client that has sent an 802.11 disassociate frame, but has not roamed or aged out yet

„Mobility Domain communications are stable. Generally, the communications required for roaming are the same as those required for VLAN tunneling. Roaming between ports on a WX is possible even if the Mobility Domain is down.

„Authentication, authorization, and accounting (AAA) on the MAP to which the client roams is successful on the first attempt. An authentication or authorization failure clears the client session. Depending on when the failure occurs, roaming can be disqualified or delayed.