Datasheet

LANCOM 1821+ Wireless ADSL
WLAN
Frequency band 2.4 GHz or 5 GHz (EU
compliance)
2400 -2483.5 MHz (ISM) or 5150 -5750 MHz or 5725-5825 MHz (UK only)
Transfer rates 2.4 GHz 54 Mbps to IEEE 802.11g (fallback to 48, 36 , 24, 18, 12, 9, 6 Mbps, Automatic Rate Selection) compatible to IEEE 802.11b (11,
5.5, 2, 1 Mbps, Automatic Rate Selection), 802.11 b/g compatibility mode or pure g or pure b, Super A/G with Turbo Mode (108
Mbps), bursting, compression
Transfer rates 5 GHz 54 Mbps to IEEE 802.11a/h (fallback to 48, 36 , 24, 18, 12, 9, 6 Mbps, Automatic Rate Selection), Super A/G with Turbo Mode
(108 Mbps), bursting, compression, fully compatible with TPC (adjustable power output) and DFS (automatic channel selection,
radar detection) according to ETSI regulations
Range * Up to 150 m (up to 30 m in buildings) *
Maximum transmission power 2.4 GHz 802.11b: +19 dBm @ 1 and 2 Mbps, +19 dBm @ 5.5 and 11 Mbps
Maximum transmission power 2.4 GHz 802.11g: +19 dBm @ 6 Mbps, +14 dBm @ 54 Mbps
Maximum transmission power 5 GHz 802.11a/h: +18 dBm @ 6 Mbps, +12 dBm @ 54 Mbps with transmission power control (TPC) and manual power settings
Minimum transmission power Transmission power reduction in software by 1 dB steps to min. 0.5 dBm
Reception sensitivity 2.4 GHz 802.11b: -87 dBm @ 11 Mbps, -94 dBm @ 1 Mbps
Reception sensitivity 2.4 GHz 802.11g: -87 dBm @ 6 Mbps, -70 dBm @ 54 Mbps
Reception sensitivity 5 GHz 802.11a/h: -87 dBm @ 6 Mbps, -67 dBm @ 54 Mbps
Radio channels 2.4 GHz Up to 13 channels, max. 3 non-overlapping (2.4 GHz band)
Radio channels 5 GHz Up to 19 non-overlapping channels (5 GHz band) with automatic dynamic channel selection (DFS)
Roaming Seamless handover between radio cells, IAPP support, IEEE 802.11d support
WPA2 fast roaming Pre-authentication and PMK caching for fast 802.1x authentication
Fast client roaming With background scanning, mobile access points in client mode can switch to alternative access points which offer a better
signal before the connection to the first access point fails
VLAN Support of up to 4094 VLAN IDs for WLAN connections, 32 simultaneously usable
VLAN Dynamic assignment of VLAN tags to 802.11x clients
Multi SSID Simultaneous use of up to 8 independent WLAN networks per WLAN interface
Security IEEE 802.11i / WPA2 with passphrase or 802.1x and hardware-accelerated AES, closed network, WEP64, WEP128, WEP152,
user authentication, 802.1x /EAP
RADIUS server Integrated RADIUS server for MAC address list management
Quality of Service Prioritization according to Wireless Multimedia Extensions (WME, integral to IEEE 802.11e)
Bandwidth limitation Each WLAN client (MAC address) can be assigned maximum transmit and receive rates and an individual VLAN ID
Background scanning The detection of rogue access points and the channel properties is carried out almost unnoticeably for all WLAN channels during
normal AP operation.
Client detection Rogue WLAN client detection based on probe requests
802.1x supplicant Authentication of an access point in WLAN client mode at another access point via 802.1X (EAP-TLS, EAP-TTLS and PEAP)
Notice * The effective distance and transmission rate that can be achieved are depending of the given building conditions.
WLAN operating modes
WLAN access point Infrastructure mode
WLAN bridge Point-to-multipoint connection of up to 7 Ethernet LANs (mixed operation optional), broken link detection, blind mode, up to
32 VLANs simultaneously for WLAN connections
WLAN client Transparent WLAN client mode for wireless Ethernet extensions, e.g. connecting PCs or printers by Ethernet; up to 64 MAC
addresses
Routing functions
Router IP, IPX and NetBIOS/IP multi-protocol router
HTTP HTTP and HTTPS server for configuration by web interface
DNS DNS client, DNS server, DNS relay, DNS proxy and dynamic DNS client
DHCP DHCP client, DHCP relay and DHCP server with autodetection
NetBIOS NetBIOS/IP proxy
NTP NTP client and SNTP server, automatic adjustment for daylight-saving time
Policy-based routing Policy-based routing based on routing tags. Based on firewall rules, certain data types are marked for specific routing, e.g. to
particular remote sites or lines.
Dynamic routing Dynamic routing with RIPv2. Learning and propagating routes; separate settings for LAN and WAN