Lancom Systems 1821n LS61380 Benutzerhandbuch

LANCOM 1821n Wireless

Scope of features: as of LCOS version LCOS 7.7x

Frequency band 2.4 GHz or 5 GHz

2400- 2483.5 MHz (ISM) or 5150- 5825 MHz (depending on country- specific restrictions)

Data rates 802.11b/g

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

Data rates 802.11a/ h

54 Mbps (fallback to 48, 36 , 24, 18, 12, 9, 6 Mbps, Automatic Rate Selection), fully compatible with TPC (adjustable power 
output) and DFS 2 (automatic channel selection, radar detection) according to ETSI regulations. 

Data rates 802.11n

300 Mbps according to IEEE 802.11n Draft 2.0 with MSC15 (Fallback to 6,5 Mbps with MSC0)

Range 802.11a/b/g *

Up to 150 m (up to 30 m in buildings) *

Range 802.11n

Up to 250 m @ 6.5 Mbps (up to 20 m @ 300 Mbps indoor)*

Output power at antenna connector, 
2.4 GHz

802.11b: +19 dBm @ 1 and 2 Mbps, +19 dBm @ 5.5 und 11 Mbps

Output power at antenna connector, 
2.4 GHz

802.11g: +18 dBm @ 6 to 36 Mbps, +17 dBm @ 48 Mbps, +16 dBm @ 54 Mbps 

802.11n: +19 dBm @ 6,5/13 Mbps (MCS0/8, 20 MHz), +10 dBm @ 65/130 Mbps (MCS7/15, 20 MHz), +17 dBm @ 15/30 Mbps 
(MCS0/8, 40 MHz), +10 dBm @ 150/300 Mbps (MCS7/15, 40 MHz)

Output power at antenna connector, 5 
GHz

802.11a/h: +18 dBm @ 6 to 24 Mbps, +17 dBm @ 36 Mbps, +16 dBm @ 48 Mbps, +15 dBm @ 54 Mbps 

802.11n: +18 dBm @ 6,5/13 Mbps (MCS0/8, 20 MHz), +10 dBm @ 65/130 Mbps (MCS7/15, 20 MHz), +17 dBm @ 15/30 Mbps 
(MCS0/8, 40 MHz), +10 dBm @ 150/300 Mbps (MCS7/15, 40 MHz)

Max. radiated power (EIRP), 2.4 GHz 
band

802.11b/g: Up to 20 dBm / 100 mW EIRP (transmission power control according to TPC or manual settings)

Max. radiated power (EIRP), 5 GHz 
band

802.11a/h: Up to 30 dBm / 1000 mW or up to 36 dBm / 4000 mW EIRP (depending on national regulation on channel usage and 
subject to further obligations such as TPC and DFS)

Minimum transmission power

Transmission power reduction in software in 1 dB steps to min. 0.5 dBm

Receiver sensitivity 2.4 GHz

802.11b: - 91 dBm @ 11 MBit/s, - 96 dBm @ 1 MBit/s; '802.11g: - 96 dBm @ 6 MBit/s, - 83 dBm @ 54 MBit/s; 

802.11n: - 96 dBm @ 6,5 Mbps (MCS0, 20 MHz), - 79 dBm @ 65 Mbps (MCS7, 20 MHz); - 95 dBm @ 13 Mbps (MCS8, 20 MHz), 
- 75 dBm @ 130 Mbps (MCS15, 20 MHz); - 90 dBm @ 15 Mbps (MCS0, 40 MHz), - 75 dBm @ 150 Mbps (MCS7, 40 MHz); - 90 dBm 
@ 30 Mbps (MCS8, 40 MHz), - 71 dBm @ 300 Mbps (MCS15, 40 MHz)

Receiver sensitivity 5 GHz

802.11a/h: - 95 dBm @ 6 MBit/s, - 82 dBm @ 54 MBit/s; 802.11n: - 95 dBm @ 6,5 Mbps (MCS0, 20 MHz), - 77 dBm @ 65 Mbps 
(MCS7, 20 MHz); - 94 dBm @ 13 Mbps (MCS8, 20 MHz), - 74 dBm @ 130 Mbps (MCS15, 20 MHz); - 91 dBm @ 15 Mbps (MCS0, 
40 MHz), - 74 dBm @ 150 Mbps (MCS7, 40 MHz); - 91 dBm @ 30 Mbps (MCS8, 40 MHz), - 70 dBm @ 300 Mbps (MCS15, 40 MHz)

Radio channels 2.4 GHz

Up to 13 channels, max. 3 non- overlapping (2.4 GHz band)

Radio channels 5 GHz

Up to 26 non- overlapping channels (available channels and further obligations such as automatic DFS2 dynamic channel 
selection depending on national regulation)

Roaming

Seamless handover between radio cells, IAPP support, IEEE 802.11d  support

WPA2 fast roaming

Pre- authentication and PMK caching for fast roaming

Fast client roaming

With background scanning, moving LANCOM "client mode" access points pre- authenticate to alternative access points which 
offer a better signal before Roaming fails

VLAN

VLAN ID definable per interface, WLAN SSID, point- to- point connection and routing context (4094 IDs)

Dynamic VLAN assignment

Dynamic VLAN assignment for target user groups based on MAC addresses, BSSID or SSID by means of external RADIUS server.

Q- in- Q tagging

Support of layered 802.1q VLANs (double tagging)

Multi- SSID

Simultaneous use of up to 8 independent WLAN networks per WLAN interface

IGMP snooping

Support for Internet Group Management Protocol (IGMP) in the WLAN bridge for WLAN SSIDs and LAN interfaces for specific 
switching of multicast packets (devices with integrated WLAN only). Multicast groups of ports (SSIDs, LAN interfaces) and router 
ports to route multicast packets over layer- 3- networks. Detailled configuration of request, request- reply and advertisement 
interval as well as robustness. Automated detection of multicast groups. Configurable action for multicast packets without 
registration (router- ports- only, flood, discard). Configuration of static multicast group members per VLAN ID. Configuration of 
query simulation for multicast membership per VLAN ID

Security

IEEE 802.11i / WPA2 with passphrase or 802.1x and hardware- accelerated AES, closed network, WEP64, WEP128, WEP152, 
user authentication, 802.1x /EAP, LEPS, WPA1/TKIP

RADIUS server

Integrated RADIUS server for MAC address list management

EAP server

Integrated EAP server for authentication of 802.1x clients via EAP- TLS, EAP- TTLS, PEAP, MSCHAP or MSCHAPv2

Quality of Service

Prioritization according to Wireless Multimedia Extensions (WME, subset of IEEE 802.11e)

U- APSD/WMM Power Save

Extension of power saving according to IEEE 802.11e by Unscheduled Automatic Power Save Delivery (equivalent to WMM Power 
Save). U- APSD supports the automatic switch of clients to a doze mode between predicted voice packet arrival due to the 
previous negotiation of a service profile (for supporting terminal devices, especially for Voice over WLAN). Display of U- APSD 
capability per SSID in status menu and display of negotiated category for each client in the station table in status menu

Bandwidth limitation

Each WLAN client (MAC address) can be assigned maximum transmit and receive rates and an individual VLAN ID