Improving the eduroam experience with Interworking (802.11u)

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Presentation transcript:

Improving the eduroam experience with Interworking (802.11u) Scott Armitage #tnc2013

Introduction What is IEEE 802.11u / HS20 /Passpoint? How can eduroam benefit from 802.11u? Interworking in action

IEEE 802.11-2012 Interworking (11u) Previously known as 802.11u Provides pre-association information to client Two-way communication Uses Access Network Query Protocol (ANQP) Use Generic Advertisement Service (GAS) 2 Way Provides Layer 2 transport for ANQP

IEEE 802.11-2012 Interworking Cont. Provides standardised information to client Access Network Type (Private, Guest Access, etc.) Internet Available Captive portal (ASRA) Emergency Services Reachable (ESR) and (UESA) Venue Information (Group and Type) e.g. Education / University Venue Name (eng:Loughborough University Library) HESSID

IEEE 802.11-2012 Interworking cont. Roaming Consortium ID Identifies a roaming network e.g. eduroam TERENA OUI – 001bc50460 Domain Name Identifies WLAN operators home domain(s) e.g. lboro.ac.uk NAI Realm List of realms which can use the WLAN Vendor Specific Attributes e.g. 50-6f-9a (WiFi Alliance Hotspot 2.0)

Hotspot 2.0 / Passpoint Hotspot 2.0 Specification published by Wi-Fi Alliance Hotspot 2.0 Task Group Passpoint Device certification program Devices which implement HS20 can be Passpoint certified

Use Case for eduroam Clients prefer home eduroam service over roaming Useful in crowded cities like London Providing users with information about the eduroam Service Provider Including support information for reporting problems Better load balancing between Service Providers HS20 Connection metrics Easier client configuration

Testing TERENA OUI - 001bc50460 Cisco Unified Wireless Hostapd Ubuntu / wpa_supplicant Samsung Galaxy S3 Samsung Galaxy S4

Cisco 802.11u Configuration

Cisco Hotspot 2.0 Configuration

Samsung Galaxy S3 / S4 Galaxy S3 Passpoint menu options enabled *#468776820# (*#hotspot20#) cred.conf in the root storage Galaxy S4 Passpoint menus available ‘out of the box’

Samsung S3 / S4 cred.conf

Samsung Galaxy S3 / S4

Samsung S4 Scan

Samsung S4 Home / Roaming

Samsung S4 Debug

Samsung S4 Debug

Problems Requirement for (NAI) Realm Attribute Lack of GAS/ANQP server implementation to lookup eduroam realms Client implementations may not support lookup Lack of support in Client devices and APs Standard being driven by commercial hotspot operators and mobile phone carriers. Different priorities to eduroam

Questions? @armitasp s.p.armitage@lboro.ac.uk