Interface Configuration Guide, Cisco IOS XE Release 3SE (Cisco 5700 Series WLC)
Configuring Multiple AP Manager Interfaces
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Configuring Multiple AP Manager Interfaces

Configuring Multiple AP Manager Interfaces

This module lists the following sections:

Finding Feature Information

Your software release may not support all the features documented in this module. For the latest feature information and caveats, see the release notes for your platform and software release. Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to http:/​/​www.cisco.com/​go/​cfn. An account on Cisco.com is not required.

Pre-requisites For Configuring AP Manager Interfaces

You must ensure that you have a separate dynamic AP-manager interface per controller port before configuring the controller's AP manager interfaces.

Restrictions for Configuring Multiple AP Manager Interfaces

The following restrictions apply while configuring the multiple AP manager interfaces in the controller:

  • You must assign an AP-manager interface to each port on the controller.
  • Before implementing multiple AP-manager interfaces, you should consider how they would impact your controller’s port redundancy.

Information About Multiple AP-Manager Interfaces

When you create two or more AP-manager interfaces, each one is mapped to a different port. The ports should be configured in sequential order so that AP-manager interface 2 is on port 2, AP-manager interface 3 is on port 3, and AP-manager interface 4 is on port 4.

Before an access point joins a controller, it sends out a discovery request. From the discovery response that it receives, the access point can tell the number of AP-manager interfaces on the controller and the number of access points on each AP-manager interface. The access point generally joins the AP-manager with the least number of access points. In this way, the access point load is dynamically distributed across the multiple AP-manager interfaces.


Note


Access points may not be distributed completely evenly across all of the AP-manager interfaces, but a certain level of load balancing occurs.


For CAPWAP, the controller needs one management interface for all controller-controller communications. AP-manager interfaces manages the communications from controller to access points. The access points join the controller using the IP address of the AP manager. The IP address of the AP manager is used as the tunnel source for the CAPWAP packets from the controller to the access points and the destination source for the CAPWAP packets from the access points to the controller. The AP manager is a Layer3 interface that maps to an SVI in Cisco IOS software.

You can configure the AP-manager and management interface in any order, however; we recommend that you configure the management interface before configuring an AP-manager interface.

Mapping of an AP-manager interface to an SVI that does not have a mapped VLAN is valid, however; you must map the AP-manager interface to an SVI that contains a mapped VLAN. The controller assumes that the mapping of an SVI to an existing VLAN; in the absence of which the SVI status would be operationally down indicating that no access points join the controller.

Configuring Multiple AP Manager Interfaces

This section has the following topics:

Feature History and Information For Configuring Multiple AP Manager Interfaces

Command History

Release

Modification

Cisco IOS XE 3.2SECisco IOS XE 3.2SE

This command was introduced.