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NET ACCESS BROADBAND ROUTER W/4-PORT SWITCH USERS' MANUAL
R
Router: A device which forwards traffic between networks. If you request
information from a location on your network or the Internet, the router will route
the request to the appropriate destination. The router's job is to listen for requests
for IP addresses that are not part of your LAN. It routes them to the appropriate
network, which may either be the Internet or another subnetwork on your LAN.
S
Server: A provider of resources (e.g.,file servers and name servers). For example,
your Broadband provides Internet Access and can be thought of as an Internet
Access Server.
Subnet: A portion of a network that shares a common address component. On
TCP/IP networks, subnets are defined as all devices whose IP Addresses have the
same prefix. For example, all devices with IP addresses that start with 213.0.0.
would be part of the same subnet.
SubnetMask/IPAddressMask: A subnet mask is what'
s used to determine what subnet an IP address belongs to. Subnetting enables the
network administrator to further divide the host part of the address into two or
more subnets.
T
TCP/IP (Transmission Control Protocol/Internet Protocol): A suite of
communication protocols used to connect hosts on the Internet. Every computer
that wants to communicate with another computer on the Internet must use the
TCP/IP protocol to transmit and route data packets. The format of an IP address is
a 32-bit numeric address written as four octets separated by periods. Each number
can be zero to 255. Within an isolated network, you can assign IP addresses at
random as long as each one is unique. However, connecting a private network to
the Internet requires using registered IP addresses to avoid duplication.
The four groups of numbers (octets) are used to identify a particular network and
host on that network. The InterNIC assigns Internet addresses as Class A, Class B,
or Class C. Class A supports 16 million hosts on each of 127 networks. Class B
supports 65,000 hosts on each of 16,000 networks. Class C supports 254 hosts on
each of 2 million networks. Due to the large increase in access to the Internet, new
classless schemes are gradually replacing the system based on classes.
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