How do I join AP to WLC?

How do I join AP to WLC?

Step 1. AP begins with a WLC discovery & join phase. AP send CAPWAP discovery request messages to WLC….

1. AP issues a DHCP discover request to get an IP address, unless it has previously configured static IP.
2. AP send a layer 3 local broadcast(255.255.255.255) message to find a WLC.
3. DHCP Option 43 in the DHCP offer messages.

What protocol does the WLC use to learn about the AP?

Control and Provisioning of Wireless Access Points (CAPWAP) is a standard and interoperable protocol that enables a Wireless LAN Controller (WLC) to manage access points (AP) or wireless termination points (WTP). CAPWAP is based on the Lightweight Access Point Protocol (LWAPP).

What is the master controller mode on WLC?

Q. When should I use the master controller mode on a WLC? A. When there is a master controller enabled, all newly added access points with no primary, secondary, or tertiary controllers assigned associate with the master controller on the same subnet.

How do we prevent loops on the WLC?

You can enable STP on the WLC to prevent loops. From the WLC GUI click Controller, then navigate to the Advanced submenu located on the left side of the application. Click the Spanning Tree option, and choose Enable for Spanning Tree Algorithm located on the right side of the application.

What is the difference between Lwapp and CAPWAP?

LWAPP is abbreviation for Lightweight Access Point Protocol. CAPWAP is abbreviation for Control and Provisioning of Wireless Access Points and interoperable protocol that enables a Wireless LAN Controller (WLC) to manage access points (AP) or wireless termination points (WTP).

Is CAPWAP a TCP or UDP?

CAPWAP uses UDP ports 5246 (control channel) and 5247 (data channel).

How many lightweight APs can you have in a mobility domain?

For example, a single Wireless Integrated Service Module (WiSM) controller supports up to 150 APs for a total of 300 APs per WiSM blade. Therefore, if you have 12 WiSMs, or 24 controllers total, the maximum number of APs in that mobility group would be 3600.

What does a Cisco WLC do?

A WLAN controller manages wireless network access points that allow wireless devices to connect to the network. What a wireless access point does for your network is similar to what an amplifier does for your home stereo.

What is difference between Capwap and Lwapp?

What is option 43 used for?

Lync Server 2010 introduced the usage of DHCP Option 43 which is used to provide clients and devices on a network the ability to locate the Lync Server’s Certificate Provisioning service, and thus automatically download a certificate required to support secure HTTPS and TLS communications for the remainder of the …

What to do if AP does not join WLC?

If it can, enter this command in enable mode: capwap ap controller ip address 10-24-2012 03:05 AM 10-24-2012 03:05 AM does the ap hits wlc. check ap join status on wlc from monitor tab. i see one ap already joined, are ap model in question similar to the one joined. old ap require ssc. also, get debug dtls.

What kind of firmware does Cisco 4402 WLC use?

Cisco 4402 Series WLC that runs firmware 5.2.178.0 This configuration works with any other Cisco WLC and any lightweight AP. The information in this document was created from the devices in a specific lab environment. All of the devices used in this document started with a cleared (default) configuration.

How to troubleshoot AP not joining wireless LAN?

If the controller debugs do not indicate a join request, you can debug the process from the AP as long as the AP has a console port. You can see the AP boot up process with these commands, but you must first get into enable mode (default password is Cisco): debug dhcp detail : Shows DHCP option 43 information.

Why is my AP unable to join my controller?

Unable to join 1200 series AP with 4402 controller running 5.2.178 version and AP was just converted from autonomous to lwapp. Here is what the AP is showing when it is booting up and fails to join.