User guide

Mobility manager
Summit WM Series WLAN Switch and Altitude Access Point Software Version 4.1 User Guide
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When the Altitude APs connect to the second Summit WM series switch, they will be assigned to the
WM-AD that is defined in the system’s default AP configuration. The wireless device users will log in
again and be authenticated on the second Summit WM series switch.
When the failed Summit WM series switch recovers, each Summit WM series switch in the pair goes
back to normal mode. They exchange information that includes the latest lists of registered Altitude
APs. The administrator must release the Altitude APs manually on the second Summit WM series
switch, so that they may re-register with their home Summit WM series switch. Foreign APs can now all
be released at once by using the Foreign button on the Access Approval screen to select all foreign APs,
and then clicking Released.
To support the availability feature during a failover event, administrators need to do the following:
1 Monitor the critical messages for the failover mode message, in the information log of the remaining
Summit WM series switch (in the Reports and Displays section of the Summit WM series switch).
2 After recovery, on the Summit WM series switch that did not fail, select the foreign Altitude APs and
click on the Release button on the Access Approval screen.
Mobility manager
The Summit WM series switch, access points, and WLAN switch software system allows multiple
Summit WM series switches (up to 8) on a network discover each other and exchange information
about a client session. This technique enables a wireless device user to roam seamlessly between
different Altitude APs on different Summit WM series switches.
The solution introduces the concept of a mobility manager, where one Summit WM series switch on the
network is designated as the mobility manager and all others are designated as mobility agents.
The wireless device keeps the IP address, WM-AD assignment, and filtering rules it received from its
home Summit WM series switch—the Summit WM series switch that it first connected to. The WM-AD
on each Summit WM series switch must have the same SSID and RF privacy parameter settings.
NOTE
For the mobility manager you have two options:
> Rely on SLP with DHCP Option 78.
> Define at the agent the IP address of the mobility manager. By explicitly defining the IP address, the agent and
the mobility manager are able to find each other directly without using the SLP discovery mechanisms. Direct IP
definition is recommended in order to provide tighter control of the registration steps for multi-domain installations.
The Summit WM series switch designated as the mobility manager:
● The mobility manager is explicitly identified as the manager for a specific mobility domain. Agents
will connect to this manager to establish a mobility domain.
● 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.
● Uses SLP, if this method is preferred, to register itself with the SLP Directory Agent as ExtremeNet