Lancom Systems LCOS 9.10 Referenzhandbuch Seite 13

10.19.3 Verschlüsselung der Pakete - das ESP-Protokoll.................................................................693
10.19.4 Die Authentifizierung - das AH-Protokoll...........................................................................694
10.19.5 Management der Schlüssel - IKE.......................................................................................697
10.19.6 Replay-Detection ...............................................................................................................697
10.20 Anwendungskonzepte für LANconfig.................................................................................................698
10.20.1 1-Click-VPN für Netzwerke (Site-to-Site).............................................................................698
10.20.2 1-Click-VPN für Advanced VPN Client.................................................................................698
11 Virtuelle LANs (VLANs)..................................................................................................700
11.1 Was ist ein Virtuelles LAN?...................................................................................................................700
11.2 So funktioniert ein VLAN......................................................................................................................700
11.2.1 Frame-Tagging.....................................................................................................................701
11.2.2 Umsetzung in den Schnittstellen des LANs...........................................................................702
11.2.3 VLAN Q-in-Q-Tagging..........................................................................................................702
11.2.4 Anwendungsbeispiele..........................................................................................................702
11.3 Konfiguration von VLANs.....................................................................................................................704
11.3.1 Allgemeine Einstellungen.....................................................................................................705
11.3.2 Die Netzwerktabelle.............................................................................................................706
11.3.3 Die Porttabelle.....................................................................................................................706
11.4 Konfigurierbare VLAN-IDs....................................................................................................................707
11.4.1 VLAN-IDs für WLAN-Clients..................................................................................................707
11.4.2 VLAN-IDs für DSL-Interfaces.................................................................................................708
11.4.3 VLAN-IDs für DSLoL-Interfaces.............................................................................................708
11.5 VLAN-Tags auf Layer 2/3 im Ethernet...................................................................................................708
11.5.1 Einleitung............................................................................................................................708
11.5.2 Konfiguration des VLAN-Taggings auf Layer 2/3..................................................................709
12 Wireless LAN - WLAN...................................................................................................711
12.1 Einleitung............................................................................................................................................711
12.2 LANCOM Active Radio Control (ARC)...................................................................................................711
12.3 Anwendungsszenarien.........................................................................................................................712
12.3.1 Infrastruktur-Modus.............................................................................................................712
12.3.2 Hotspot oder Gastzugang....................................................................................................713
12.3.3 Managed-Modus.................................................................................................................714
12.3.4 WLAN-Bridge (Point-to-Point)..............................................................................................714
12.3.5 WLAN-Bridge im Relais-Betrieb............................................................................................715
12.3.6 WLAN-Bridge zum AP - managed und unmanaged gemischt..............................................715
12.3.7 Wireless Distribution System (Point-to-Multipoint)...............................................................716
12.3.8 Client-Modus.......................................................................................................................716
12.3.9 Client-Modus bei bewegten Objekten im Industriebereich....................................................717
12.4 WLAN-Standards.................................................................................................................................717
12.4.1 IEEE 802.11n.......................................................................................................................718
12.4.2 IEEE 802.11a: 54 MBit/s......................................................................................................726
12.4.3 IEEE 802.11h - ETSI 301 893...............................................................................................726
12.4.4 IEEE 802.11g: 54 MBit/s......................................................................................................729
12.4.5 IEEE 802.11b: 11 MBit/s......................................................................................................729
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