Extreme wm100 Guía Del Usuario
Availability and Mobility configuration
HWC_GSG_Avail&MobilConfiguration.fm
Mobility overview
120385-00 Rev 01, March 2007
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Summit WM, Getting Started Guide
9.3 Mobility overview
The Summit WM-Series WLAN Switch Software Solution allows multiple Summit
WM Switches (up to 12) on a network to discover each other and exchange
information about a client session. This feature enables a wireless device user to
roam seamlessly between Altitude APs that are registered with separate Summit
WM Switches.
WM Switches (up to 12) on a network to discover each other and exchange
information about a client session. This feature enables a wireless device user to
roam seamlessly between Altitude APs that are registered with separate Summit
WM Switches.
The solution introduces the concept of a mobility manager and mobility agents;
the concept requires designating one Summit WM Switch as the mobility
manager and other Summit WM Switches as mobility agents.
the concept requires designating one Summit WM Switch as the mobility
manager and other Summit WM Switches as mobility agents.
The wireless device keeps the IP address, WM-AD assignment, and filtering rules
it received from its home Summit WM Switch— the Summit WM Switch to which
it was first connected.
it received from its home Summit WM Switch— the Summit WM Switch to which
it was first connected.
The WM-AD on each Summit WM Switch must have the same SSID and RF
privacy parameter settings for seamless roaming to occur.
privacy parameter settings for seamless roaming to occur.
The mobility manager and the mobility agents use the following two options for
the discovery process.
the discovery process.
•
SLP with DHCP Option 78. The mobility agent on each Summit WM Switch
will discover the address of the mobility manager using Option 78.
will discover the address of the mobility manager using Option 78.
•
Direct IP address option: Defined while configuring the mobility agent. By
explicitly defining the manager’s IP address while configuring the agents,
enables the manager and agents to find each other directly without using the
SLP discovery mechanisms.
explicitly defining the manager’s IP address while configuring the agents,
enables the manager and agents to find each other directly without using the
SLP discovery mechanisms.
Note: In order to provide tighter control of the registration steps for multi-domain
installations, direct IP address definition option is recommended.
installations, direct IP address definition option is recommended.
The mobility manager:
•
Defines the registration behavior for a multi-Summit WM Switch mobility
domain set:
domain set:
•
Open mode – A new agent automatically registers itself with the mobility
manager and immediately becomes part of the mobility domain.
manager and immediately becomes part of the mobility domain.
•
Secure mode – The 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 connection.
register. Instead, the connection with the new agent is placed in pending
state until the administrator approves the connection.
•
Listens for connection attempts from mobility agents.
•
Establishes connection and sends a message to the mobility agent specifying
the heartbeat interval and the IP address in Mobility Permission List.
the heartbeat interval and the IP address in Mobility Permission List.
•
Sends regular Heartbeat messages containing wireless device session
changes and waits for a return update message.
changes and waits for a return update message.