MSM7xx Controllers Configuration Guide v6.4.0

3. Define settings as follows:
• Controller name: Specify a name to identify the controller.
• Ethernet base MAC: Specify the MAC address of the controller. This value cannot be
changed once the controller information is saved.
• Product: Displays the product type of the controller.
• Contact: Specify contact information for the controller.
• Location: Specify the location where the controller is installed.
4. Select Save.
5. The new controller will appear in the team members list with a red status light until it is
discovered on the network.
Discovery of a controller team by controlled APs
For a complete discussion of controller discovery, see “Discovery of controllers by controlled APs”
(page 148).
Failover
During normal operation, the team manager and team members are in continuous contact to ensure
the integrity of the team. This allows for quick detection of an inoperative or unreachable team
member, and implementation of failover procedures to ensure continuity of network services.
NOTE: When a team member becomes inoperative and failover occurs, all services provided
by the failed controller are temporarily interrupted. Once failover is complete and services return,
users that were connected to an access-controlled VSC on this controller must login again.
Supporting N + N redundancy
The MSM720 only supports N + 1 redundancy with a maximum of 40 APs.
A controller team can be configured to provide different levels of redundancy, from N + 1 up to
N + 3. Use the following formula to calculate the number of team members you will need based
on the number of APs that you want to deploy and the required level of redundancy.
Required team members = ( APs / 200 ) + Redundancy_level
(If there is a remainder after performing the division, round up.)
Where:
• APs is the total number of APs you want to deploy. You must buy one license for each controlled
AP. Although licenses are installed on individual team members, licenses are pooled across
the entire team and are automatically re-allocated when a team member becomes inoperative.
• Redundancy_level: This is the number of redundant controllers that you want to support: 1, 2,
or 3.
Discovery of a controller team by controlled APs 271