what is different primary controller between master controller ?

[Arvin.hsu]

Cisco Wireless LAN Controller Failover Protection

In multiple-controller deployments, if one controller fails, the access points perform the following tasks:

If the access point has no primary, secondary, or tertiary controllers assigned or if its primary, secondary, or tertiary controllers are unavailable, it attempts to associate with a master controller.

Hi guys

I have questions ,

1,what is master controller ?

2,I don't understand what is different between primary controller and master controller ?

[jonatrod · Accepted solution]

Hi mikehsueh, thank you for using our forum, my name is Johnnatan I am part of the Small business Support community. I found information related your concern, I will share to you a link with all information regarding Wireless LAN Controllers,

http://www.cisco.com/en/US/docs/wireless/controller/7.0/configuration/guide/c70ovrv.html in Cisco Wireless LAN Controllers section you can see a brief explanation about it.

I hope you find this answer useful

“Please rate useful posts so other users can benefit from it”

Greetings, 
Johnnatan Rodriguez Miranda.
Cisco Network Support Engineer.