Datasheet

WLAN
Authentication of an access point in WLAN client mode at another access point via 802.1X (EAP-TLS, EAP-TTLS and PEAP)802.1X supplicant
Layer-3 Tunneling in conformity with the CAPWAP standard allows the bridging of WLANs per SSID to a separate IP subnet. Layer-2 packets are
encapsulated in Layer-3 tunnels and transported to a LANCOM WLAN controller. By doing this the access point is independent of the present
infrastructure of the network. Possible applications are roaming without changing the IP address and compounding SSIDs without using VLANs.
Layer-3 Tunneling
The WLAN standard IEEE 802.11u (Hotspot 2.0) allows for a seamless transition from the cellular network into WLAN hotspots. Authentication
methods using SIM card information, certificates or username and password, enable an automatic, encrypted login to WLAN hotspots - without
the need to manually enter login credentials.
IEEE 802.11u
The effective distances and transmission rates that can be achieved are depending of the site RF conditions*) Note
LANCOM Spectral Scan
Up to 13 channels (2.4 GHz) or up to 26 channels (5 GHz) (depending on national regulations and manual configuration)RF spectrum scan
Illustration of signal strength on individual WLAN channels at a certain point of timeSignal strength of WLAN channels
IEEE 802.11n Features
MIMO technology is a technique which uses multiple transmitters to deliver multiple data streams via different spatial channels. Depending on the
existing RF conditions the throughput is multiplied with MIMO technology.
MIMO
Two adjacent 20 MHz channels are combined to create a single 40 MHz channel. Depending on the existing RF Conditions channel bonding doubles
the throughput.
40 MHz Channels
Support of coexisting accesspoints with 20 and 40MHz channels in 2.4GHz band.20/40MHz Coexistence Mechanisms in the
2.4GHz Band
MAC Aggregation increase the 802.11 MAC efficiency by combining MAC data frames and sending it out with a single header. The receiver
acknowledges the combined MAC frame with a Block Acknowledgement. Depending on existing RF conditions, this technique improves throughput
by up to 20%.
MAC Aggregation and Block
Acknowledgement
Maximal Ratio Combining (MRC) enables the receiver (access point), in combination with multiple antennas, to optimally combine MIMO signals
to improve the client reception at long-range.
Maximal Ratio Combining (MRC)
The guard interval is the time between OFDM symbols in the air. 802.11n gives the option for a shorter 400 nsec guard interval compared to the
legacy 800 nsec guard interval. Under ideal RF conditions this increases the throughput by upto 10%
Short Guard Interval
WLAN operating modes
Infrastructure mode (autonomous operation or managed by LANCOM WLAN Controller)WLAN access point
Point-to-multipoint connection of up to 16 Ethernet LANs (mixed operation optional), broken link detection, blind mode, supports VLAN When
configuring Pt-to-Pt links, pre-configured names can be used as an alternative to MAC Adresses for creating a link. Rapid spanning-tree protocol
to support redundant routes in Ethernet networks
WLAN bridge
Use of the LAN connector for simultaneous DSL over LAN, IP router, NAT/Reverse NAT (IP masquerading) DHCP server, DHCP client, DHCP relay
server, DNS server, PPPoE client (incl.Multi-PPPoE), PPTP client and server, NetBIOS proxy, DynDNS client, NTP, port mapping, policy-based routing
based on routing tags, tagging based on firewall rules, dynamic routing with RIPv2, VRRP
WLAN router
Transparent WLAN client mode for wireless Ethernet extensions, e.g. connecting PCs or printers by Ethernet; up to 64 MAC addresses. Automatic
selection of a WLAN profile (max. 8) with individual access parameters depending on signal strength or priority
WLAN client
By scanning the RF spectrum, intererences are identified and graphically illustrated.Spectral Scan
Firewall
Incoming/Outgoing Traffic inspection based on connection information. Trigger for firewall rules depending on backup status, e.g. simplified rule
sets for low-bandwidth backup lines. Limitation of the number of sessions per remote site (ID)
Stateful inspection firewall
Check based on the header information of an IP packet (IP or MAC source/destination addresses; source/destination ports, DiffServ attribute);
remote-site dependant, direction dependant, bandwidth dependant
Packet filter
Network Address Translation (NAT) based on protocol and WAN address, i.e. to make internal webservers accessible from WANExtended port forwarding
N:N IP address mapping for translation of IP addresses or entire networksN:N IP address mapping
The firewall marks packets with routing tags, e.g. for policy-based routing; Source routing tags for the creation of independent firewall rules for
different ARF contexts
Tagging
Forward, drop, reject, block sender address, close destination port, disconnectActions
Via e-mail, SYSLOG or SNMP trapNotification
Quality of Service
Dynamic bandwidth management with IP traffic shapingTraffic shaping
LANCOM L-320agn Wireless
Features as of: LCOS 8.82 ( > REL. D)