
Chapter 3 Configuring Ports and Interfaces
Overview of Ports and Interfaces
Interfaces
An interface is a logical entity on the controller. An interface has multiple parameters associated with it, including an IP address,
These five types of interfaces are available on the controller. Four of these are static and are configured at setup time:
•Management interface (Static and configured at setup time; mandatory)
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•Virtual interface (Static and configured at setup time; mandatory)
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•Dynamic interface
Each interface is mapped to at least one primary port, and some interfaces (management and dynamic) can be mapped to an optional secondary (or backup) port. If the primary port for an interface fails, the interface automatically moves to the backup port. In addition, multiple interfaces can be mapped to a single controller port.
Note Refer to the “Enabling Link Aggregation” section on page
Management Interface
The management interface is the default interface for
The management interface is also used for Layer 2 communications between the controller and Cisco 1000 series lightweight access points. It must be assigned to distribution system port 1 but can also be mapped to a backup port and can be assigned to WLANs if desired. It may be on the same VLAN or IP subnet as the
•Sends messages through the Layer 2 network to autodiscover and communicate with other controllers through all distribution system ports.
•Listens across the Layer 2 network for Cisco 1000 series lightweight access point LWAPP polling messages to autodiscover, associate to, and communicate with as many Cisco 1000 series lightweight access points as possible.
When LWAPP communications are set to Layer 2 (same subnet) mode, the controller requires one management interface to control all
Cisco Wireless LAN Controller Configuration Guide
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