Cisco Cisco 5520 Wireless Controller 기술 참조

The phone client device starts the auto discovery process by reading 802.11u information from the 
beacon or probe response of the 802.11u/HotSpot 2.0 capable AP. Once a phone client device recognizes 
and identifies neighboring AP’s Passpoint capability, the phone client device starts an ANQP query to 
get the 3GPP Cellular Information (3GPP CI) or realm name and domain name information. The 3GPP 
CI & Realm name will reveal the list of service providers that the phone client device may initiate 
authentication request. The ANQP response also contains a domain name list. The domain name list will 
provide information if responding AP in the hotspot venue is operating as the home network or visitor 
(roaming) network. Once the phone client device gathers all of the required information, and if the phone 
client device successfully passes its own connection criteria, which is defined as Passpoint configuration 
file called “Cred.conf” in its user directory, the phone client device begins the 802.1x/EAP 
authentication process to establish a secure connection to the AP. In this example, the “Cred.conf” file 
name is unique to Samsung Galaxy S4. If there are any other Passpoint 1.0 certified devices, it can have 
a different name or format of the client configuration file

The following topics contain equipment matrices, drawings, configurations, and steps necessary to 
implement Passpoint configuration, using Cisco AP/WLC infrastructure.