User's Guide

Table Of Contents
Configuring Mobility
hwc_mobility.fm
Mobility overview
9034530-02, March 2010
406 HiPath Wireless Controller, Access Points and Convergence Software V7.11, User Guide
Open mode – A new agent is automatically able to register itself with the
mobility manager and immediately becomes part of the mobility domain
Secure mode – The mobility manager does not allow a new agent to
automatically register. Instead, the connection with the new agent is
placed in pending state until the administrator approves the new device.
Listens for connection attempts from mobility agents.
Establishes connections and sends a message to the mobility agent
specifying the Heartbeat interval, and the mobility manager's IP address if it
receives a connection attempt from the agent.
Sends regular Heartbeat messages containing wireless device session
changes and agent changes to the mobility agents and waits for a returned
update message
The HiPath Wireless Controller designated as a mobility agent:
Uses SLP or a statically configured IP address to locate the mobility manager
Defines at the agent the IP address of the mobility manager, which allows for
the bypass of SLP. Agents directly find and attempt to register with the
mobility manager.
Attempts to establish a TCP/IP connection with the mobility manager
In response to the ‘heartbeat’ message, the mobility agent sends updates on
the wireless device users and the data tunnels to the mobility manager.
If a controller configured as the mobility manager is lost, the following occurs:
Agent to agent connections will remain active.
Mobility agents will continue to operate based on the mobility information last
coordinated before the manager link was lost. The mobility location list
remains relatively unaffected by the controller failure. Only entries associated
with the failed controller are cleared from the registration list, and users that
have roamed from the manager controller to other agents are terminated and
required to re-register as local users with the agent where they are currently
located.
The data link between active controllers remains active after the loss of a
mobility manager
Mobility agents continue to use the last set of mobility location lists to service
known users
Existing users:
Existing users remain in the mobility scenario, and if the users are known
to the mobility domain, they continue to be able to roam between
connected controllers