AirLive WN-301USB - Manual (Page 62)

WN-301USB User’s Manual 56
Gateway
In the global Internet network, the gateways are core routers that connect networks in different IP
subnet together. In a LAN environment with an IP sharing router, the gateway is the router. In an
office environment, gateway typically is a multi-function device that integrates NAT, firewall,
bandwidth management, and other security functions.
Hotspot
A place where you can access Wi-Fi service. The term hotspot has two meanings in wireless
deployment. One is the wireless infrastructure deployment, the other is the Internet access billing
system. In a hotspot system, a service provider typically need an authentication and account system
for billing purposes, and a wireless AP network to provide access for customers.
IGMP Snooping
Internet Group Management Protocol (IGMP) is a Layer 3 protocol to report IP multicast
memberships to neighboring multicast switches and routers. IGMP snooping is a feature that allows
an Ethernet switch to "listen in" on the IGMP conversation between hosts and routers. A switch
support IGMP snooping has the possibility to avoid multicast traffic being treated as broadcast traffic;
therefore, reducing the overall traffic on the network.
Infrastructure Mode
A wireless network that is built around one or more access points to provide wireless clients access
to wired LAN / Internet service. The opposite of Infrastructure mode is Ad-hoc mode.
IP address
IP (Internet Protocol) is a layer-3 network protocol that is the basis of all Internet communication. An
IP address is 32-bit number that identifies each sender or receiver of information that is sent across
the Internet. An IP address has two parts: an identifier of a particular network on the Internet and an
identifier of the particular device (which can be a server or a workstation) within that network. The
new IPv6 specification supports 128-bit IP address format.