AirLive WN-151ARM - Manual (Page 108)

AirLive WN-151ARM User’s Manual 108
802.11n
802.11n is a recent amendment which improves upon the previous 802.11 standards by adding multiple-input
multiple-output (MIMO) and many other newer features. The IEEE has approved the amendment and it was
published in October 2009. Enterprises, however, have already begun migrating to 802.11n networks based
on the Wi-Fi Alliance's certification of products conforming to a 2007 draft of the 802.11n proposal.
802.11n provides a throughput up to 300Mbps using OFDM technology.
802.3ad
802.3ad is an IEEE standard for bonding or aggregating multiple Ethernet ports into one virtual port (also
known as trunking) to increase the bandwidth.
802.3af
This is the PoE (Power over Ethernet) standard by IEEE committee. 803.af uses 48V POE standard that can
deliver up to 100 meter distance over Ethernet cable.
802.1d STP
Spanning Tree Protocol. It is an algorithm to prevent network from forming. The STP protocol allows net work
to provide a redundant link in the event of a link failure. It is advise to turn on this option for multi-link bridge
network.
802.1Q Tag VLAN
In 802.1Q VLAN, the VLAN information is written into the Ethernet packet itself. Each packet carries a VLAN
ID (called Tag) as it traveled across the network. Therefore, the VLAN configuration can be configured across
multiple switches. In 802.1Q spec, possible 4096 VLAN ID can be created. Although for some devices, they
can only view in frames of 256 ID at a time.
802.1x
802.1x is a security standard for wired and wireless LANs. In the 802.1x parlance, there are usually
supplicants (client), authenticator (switch or AP), and authentication server (radius server) in the network.
When a supplicants request a service, the authenticator will pass the request and wait for the authentication
server to grant access and register accounting. The 802.1x is the most widely used method of authentication
by WISP.
Ad-hoc
A Peer-to-Peer wireless network. An Ad-hoc wireless network do not use wireless AP or router as the central
hub of the network. Instead, wireless client are connected directly to each other. The disadvantage of Adhoc
network is the lack of wired interface to Internet connections. It is not recommended for network more than 2
nodes.