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Wireless IAD User Manual
Chapter 6 : Glossary
ARP (Address Resolution Protocol)
ARP is a TCP/IP protocol for mapping an IP address to a physical machine
address that is recognized in the local network, such as an Ethernet
address.
A host wishing to obtain a physical address broadcasts an ARP request
onto the TCP/IP network. The host on the network that has the IP address in
the request then replies with its physical hardware address.
DHCP (Dynamic Host Configuration Protocol)
When operates as a DHCP server, the ADSL Router assign IP addresses to
the client PCs on the LAN. The client PCs "leases" these Private IP
addresses for a user-defined amount of time. After the lease time expires,
the private IP address is made available for assigning to other network
devices.
The DHCP IP address can be a single, fixed public IP address, an ISP
assigned public IP address, or a private IP address.
If you enable DHCP server on a private IP address, a public IP address will
have to be assigned to the NAT IP address, and NAT has to be enabled so
that the DHCP IP address can be translated into a public IP address. By this,
the client PCs are able to access the Internet.
LAN (Local Area Network) & WAN (Wide Area Network)
A LAN is a computer network limited to the immediate area, usually the
same building or floor of a building. A WAN, on the other hand, is an outside
connection to another network or the Internet.
The Ethernet side of the ADSL Router is called the LAN port. It is a
twisted-pair Ethernet 10Base-T interface. A hub can be connected to the
LAN port. More than one computers, such as server or printer, can be
connected through this hub to the ADSL Router and composes a LAN.
The DSL port of the ADSL Router composes the WAN interface, which
supports PPP or RFC 1483 connecting to another remote DSL device.
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