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WL0006 - WLC Access Point Authentication (Part 2)

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The video walks you through different methods that Cisco Access Point uses to discover Wireless LAN Controller and how an AP makes a decision on which controllers to join. Each method will be demonstrated with their order of priority explained. We will mention the purpose of Master Controller and stress on importance of controller priming. Wireshark analysis will be performed throughout the lab for us to examine controller discovery and AP registration processes. 
Part 2 of this video covers 802.1x authentication
  • Controller Discovery
  • L3 Broadcast
  • Directed L3 Broadcast
  • DHCP Option 43
  • DNS Resolution
  • Master Controller
  • Controller Priming
  • Controller Failover

About Author

Metha Cheiwanichakorn, CCIE#23585 (RS, Sec, SP), is a Cisco networking enthusiast with years of experience in the industry. He is currently working as a consulting engineer for a Cisco partner. As a founder of and an instructor at, Metha enjoys learning and challenges himself with new Cisco technologies.


What is the main difference between the MIC and LSC.

MIC is signed by Cisco Manufacture Cert which comes by default on AP. LSC is when you have the controller sign the AP cert.

What is the use of the SSC certificate

SSC is a self-signed cert. AP can use it for authentication but LSC is usually preferred.

1) what is the use of the networking level authentication compared to controller level?
2) this is all for the AP authentication only or for clients also?
3) ip radius source interface loopback0 what is this command and why we are using?
4) what about aaa model1 ?
5) will it be done after AP integration with the Wlc or before?
6) why you give aaa server 802.1x user name and password ?