Netgear WG602 V2 사용자 설명서

Network, Routing, Firewall, and Cabling Basics

C-9

The WG602 v2 Access Point also functions as a DHCP client when connecting to the ISP. The 
firewall can automatically obtain an IP address, subnet mask, DNS server addresses, and a 
gateway address if the ISP provides this information by DHCP.

Many of the resources on the Internet can be addressed by simple descriptive names such as 
www.netgear.com. This addressing is very helpful at the application level, but the descriptive name 
must be translated to an IP address in order for a user to actually contact the resource. Just as a 
telephone directory maps names to phone numbers, or as an ARP table maps IP addresses to MAC 
addresses, a domain name system (DNS) server maps descriptive names of network resources to 
IP addresses.

When a PC accesses a resource by its descriptive name, it first contacts a DNS server to obtain the 
IP address of the resource. The PC sends the desired message using the IP address. Many large 
organizations, such as ISPs, maintain their own DNS servers and allow their customers to use the 
servers to look up addresses.

Two protocols routers use extensively are:

•

Routing Information Protocol (RIP) 

•

Address Resolution Protocol (ARP)

These two protocols are introduced below.

One of the protocols used by a router to build and maintain a picture of the network is RIP. Using 
RIP, routers periodically update one another and check for changes to add to the routing table.

The WG602 v2 Access Point supports both the older RIP-1 and the newer RIP-2 protocols. 
Among other improvements, RIP-2 supports subnet and multicast protocols. RIP is not required 
for most home applications.