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

Configuring Dynamic 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:/​/​​go/​cfn. An account on is not required.

Pre - requisites for Configuring Dynamic Interfaces

While configuring on the dynamic interface of the controller, you must ensure the following:

  • A controller’s dynamic interface and all wireless clients in the WLAN that are local to the controller must have IP addresses in the same subnet.
  • You must use tagged VLANs for dynamic interfaces.

Restrictions for Configuring Dynamic Interfaces

The following restrictions apply for configuring the dynamic interfaces on the controller:

  • You must not configure a dynamic interface in the same subnetwork as a server that is reachable by the controller CPU, such as a RADIUS server, as it might cause asymmetric routing issues.
  • The controller does not respond to SNMP requests if the source address of the request comes from a subnet that is configured as a dynamic interface.

Information About Dynamic AP Management

A dynamic interface is created as a WLAN interface by default. However, any dynamic interface can be configured as an AP-manager interface, with one AP-manager interface allowed per physical port. A dynamic interface with the Dynamic AP Management option enabled is used as the tunnel source for packets from the controller to the access point and as the destination for CAPWAP packets from the access point to the controller. The dynamic interfaces for AP management must have a unique IP address and are usually configured on the same subnet as the management interface.


If link aggregation (LAG) is enabled, there can be only one AP-manager interface.

We recommend having a separate dynamic AP-manager interface per controller port.

Configuring Dynamic Interfaces

Before You Begin

You must create the Layer 2 interface that you plan to use in the WLAN.

You can configure the dynamic interface using the following steps:


    1.    show VLAN

    2.    show int VLAN

    3.    configure terminal

    4.    wlan wlan-name wlan-ID wlan-SSID

    5.    client vlan vlan-name

    6.    show vlan

    7.    end

    8.    Show WLAN summary

      Command or Action Purpose
    Step 1 show VLAN

    Displays all the VLANs.

    Step 2 show int VLAN

    Displays all the VLAN interfaces.

    Step 3 configure terminal

    Enters global configuration mode.

    Step 4 wlan wlan-name wlan-ID wlan-SSID

    Configures the WLAN.

    Step 5 client vlan vlan-name

    Configures the client VLAN.

    Step 6 show vlan

    Displays all the VLANs in the WLAN.

    Step 7 end

    Exit configuration mode.

    Step 8 Show WLAN summary

    Displays a summary of all the configured VLANs.


    Feature History and Information For Configuring Dynamic Interfaces

    Command History



    Cisco IOS XE 3.2SECisco IOS XE 3.2SE

    This command was introduced.