ZyXEL Communications P-660RU-T V2 사용자 설명서
Chapter 5 LAN Setup
P-660RU-T v2 User’s Guide
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5.2 DNS Server Addresses
DNS (Domain Name System) maps a domain name to its corresponding IP address and vice
versa. The DNS server is extremely important because without it, you must know the IP
address of a computer before you can access it. The DNS server addresses you enter when you
set up DHCP are passed to the client machines along with the assigned IP address and subnet
mask.
versa. The DNS server is extremely important because without it, you must know the IP
address of a computer before you can access it. The DNS server addresses you enter when you
set up DHCP are passed to the client machines along with the assigned IP address and subnet
mask.
There are two ways that an ISP disseminates the DNS server addresses.
• The ISP tells you the DNS server addresses, usually in the form of an information sheet,
when you sign up. If your ISP gives you DNS server addresses, enter them in the DNS
Server fields in the LAN Setup screen.
Server fields in the LAN Setup screen.
• Some ISPs choose to disseminate the DNS server addresses using the DNS server
extensions of IPCP (IP Control Protocol) after the connection is up. If your ISP did not
give you explicit DNS servers, chances are the DNS servers are conveyed through IPCP
negotiation. The ZyXEL Device supports the IPCP DNS server extensions through the
DNS proxy feature.
give you explicit DNS servers, chances are the DNS servers are conveyed through IPCP
negotiation. The ZyXEL Device supports the IPCP DNS server extensions through the
DNS proxy feature.
The ZyXEL Device acts as a DNS proxy when the Primary and Secondary DNS Server
fields are left blank in the LAN Setup screen.
fields are left blank in the LAN Setup screen.
Please note that DNS proxy works only when the ISP uses the IPCP DNS server
extensions. It does not mean you can leave the DNS servers out of the DHCP setup under
all circumstances. If your ISP gives you explicit DNS servers, make sure that you enter
their IP addresses in the LAN Setup screen.
extensions. It does not mean you can leave the DNS servers out of the DHCP setup under
all circumstances. If your ISP gives you explicit DNS servers, make sure that you enter
their IP addresses in the LAN Setup screen.
5.3 LAN TCP/IP
The ZyXEL Device has built-in DHCP server capability that assigns IP addresses and DNS
servers to systems that support DHCP client capability.
servers to systems that support DHCP client capability.
5.3.1 Factory LAN Defaults
The LAN parameters of the ZyXEL Device are preset in the factory with the following values:
• IP address of 192.168.1.1 with subnet mask of 255.255.255.0 (24 bits)
• DHCP server enabled with 32 client IP addresses starting from 192.168.1.33.
• DHCP server enabled with 32 client IP addresses starting from 192.168.1.33.
These parameters should work for the majority of installations. If your ISP gives you explicit
DNS server address(es), read the embedded web configurator help regarding what fields need
to be configured.
DNS server address(es), read the embedded web configurator help regarding what fields need
to be configured.
5.3.2 IP Address and Subnet Mask