5. Wireless Network Glossary
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X.USB
User’s Manual
Fragment Threshold
Frame Size larger than this will be divided into smaller fragment. If there are
interferences in your area, lower this value can improve the performance. If there
are not, keep this parameter at higher value. The default size is 2346. You can try
1500, 1000, or 500 when there are interference around your network.
Full Duplex
The ability of a networking device to receive and transmit data simultaneously. In
wireless environment, this is usually done with 2 or more radios doing load
balancing.
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.
