Converting a Cisco WLAN Solution from Layer 2 to Layer 3 Mode
When you wish to convert a Cisco WLAN Solution from Layer 2 to Layer 3 Mode, use one of the following procedures:
•Using the Web User Interface
•Using the Cisco WCS User Interface
Using the Web User Interface
When you wish to convert a Cisco WLAN Solution from Layer 2 to Layer 3 LWAPP Transport Mode using the Web User Interface, complete the following steps:
CAUTION: This procedure will cause your Cisco 1000 Series lightweight access points to go offline until the Cisco Wireless LAN Controller reboots and the associated Cisco 1000 Series lightweight access points reassociate with the Cisco Wireless LAN Controller.
Note: Layer 3 Mode requires that all subnets that the Cisco Wireless LAN Controllers are connected to include at least one DHCP server. When you have completed this procedure, the Cisco Wireless LAN Controller stores its IP address in its associated Cisco 1000 Series lightweight access points. When each Cisco 1000 Series light- weight access point is powered up, it obtains an IP address from the local DHCP server, and connects to its Primary, Secondary, or Tertiary Cisco Wireless LAN Controller.
Note: Layer 3 Mode requires that all subnets that contain Cisco Wireless LAN Controllers and Cisco 1000 Series lightweight access points are routable to each other.
1.To use the Cisco WLAN Solution in Layer 3 mode, you must create an AP Manager Interface, which manages communications between each Cisco Wireless LAN Controller and its associated Cisco 1000 Series lightweight access points. This AP Manager Interface will require a fixed IP address, which must be different from the Management Interface IP address, but which can be on the same subnet as the Management Interface.
2.MAKE SURE that all the Cisco Wireless LAN Controllers and Cisco 1000 Series lightweight access points are on the same subnet: that they are only connected through Layer 2 devices.
CAUTION: This step is very important! You must configure the Cisco Wireless LAN Controllers and associated Cisco 1000 Series lightweight access points to operate in Layer 3 mode BEFORE completing the conversion.
3.Verify that the Cisco 1000 Series lightweight access points are assigned to the desired Cisco Wireless LAN Controller. If you do not complete this step, the Cisco 1000 Series lightweight access points will fail to associate with the Cisco Wireless LAN Controller after completing the conversion.
A.In the Web User Interface, select WIRELESS/Cisco APs to navigate to the Cisco APs page, and click Detail to have the Web User Interface display the Cisco APs > Details page.
B.On the Cisco APs > Details page for each Cisco 1000 Series lightweight access point, verify that the Primary, Secondary, and Tertiary Controller Names are correct. If you change the Primary, Secondary, or Tertiary Controller Names, click Apply to save the change to the Cisco 1000 Series lightweight access point.
5/26/05 Converting a Cisco WLAN Solution from Layer 2 to Layer 3 Mode
