Description:
IAPP (Inter Access Point Protocol) is used for exchanging information between access points. In the process information regarding logged in WiFi devices is transmitted. If a WiFi devices switches to another access point, this access point informs the old one, which removes the WiFi device from its station table. In doing so all login information is retained and the roaming takes place nearly seamlessly ("soft roaming"). Whereas when a "hard roaming" takes place, the WiFi device has to authenticate itself anew with the new access point.
When a WLAN Controller is in conjunction with a WLC Tunnel the roaming information is transmitted via the CAPWAP-DATA Tunnel.
IAPP uses the Multicast group 224.0.1.76 to communicate. Therefore communication withis this group must be ensured in the IGMPv3 settings on the switches.
Additional Knowledge Base articles regarding IAPP:
- Roaming bei LANCOM Access Points und WLAN Routern
- LCOS ab Version 10.20: Verwendung des Client Management bei LANCOM Access Points
- IAPP pro ARF-Netz schaltbar
- LCOS ab Version 10.12: Änderung bei Steuerung der Kommunikationsmöglichkeit zwischen WLAN-Clients
- Einrichtung von IGMP-Snooping für mehrere VLANs auf einem Switch der GS-3xxx Serie
