ZyXEL Communications Corporation NBG419N Manual De Usuario
Chapter 14 DHCP Server
NBG-419N Users Guide
141
The following table describes the labels in this screen.
Table 56 Network > DHCP Server > Advanced
LABEL
DESCRIPTION
LAN Static DHCP Table
#
#
This is the index number of the static IP table entry (row).
MAC Address
Type the MAC address (with colons) of a computer on your LAN.
IP Address
Type the LAN IP address of a computer on your LAN.
DNS Server
DNS Servers
Assigned by
DHCP Server
DNS Servers
Assigned by
DHCP Server
The NBG-419N passes a DNS (Domain Name System) server IP
address (in the order you specify here) to the DHCP clients. The NBG-
419N only passes this information to the LAN DHCP clients when you
select the Enable DHCP Server check box. When you clear the
Enable DHCP Server check box, DHCP service is disabled and you
address (in the order you specify here) to the DHCP clients. The NBG-
419N only passes this information to the LAN DHCP clients when you
select the Enable DHCP Server check box. When you clear the
Enable DHCP Server check box, DHCP service is disabled and you
must have another DHCP sever on your LAN, or else the computers
must have their DNS server addresses manually configured.
must have their DNS server addresses manually configured.
First DNS Server
Second DNS
Server
Select From ISP if your ISP dynamically assigns DNS server
information (and the NBG-419N's WAN IP address). The field to the
right displays the (read-only) DNS server IP address that the ISP
assigns.
information (and the NBG-419N's WAN IP address). The field to the
right displays the (read-only) DNS server IP address that the ISP
assigns.
Select User-Defined if you have the IP address of a DNS server.
Enter the DNS server's IP address in the field to the right. If you chose
User-Defined, but leave the IP address set to 0.0.0.0, User-Defined
changes to None after you click Apply. If you set a second choice to
User-Defined, and enter the same IP address, the second User-
Defined changes to None after you click Apply.
Enter the DNS server's IP address in the field to the right. If you chose
User-Defined, but leave the IP address set to 0.0.0.0, User-Defined
changes to None after you click Apply. If you set a second choice to
User-Defined, and enter the same IP address, the second User-
Defined changes to None after you click Apply.
Select DNS Relay to have the NBG-419N act as a DNS proxy. The
NBG-419N's LAN IP address displays in the field to the right (read-
only). The NBG-419N tells the DHCP clients on the LAN that the NBG-
419N itself is the DNS server. When a computer on the LAN sends a
DNS query to the NBG-419N, the NBG-419N forwards the query to the
NBG-419N's LAN IP address displays in the field to the right (read-
only). The NBG-419N tells the DHCP clients on the LAN that the NBG-
419N itself is the DNS server. When a computer on the LAN sends a
DNS query to the NBG-419N, the NBG-419N forwards the query to the
NBG-419N's system DNS server (configured in the WAN > Internet
Connection screen) and relays the response back to the computer.
You can only select DNS Relay for one of the three servers; if you
select DNS Relay for a second or third DNS server, that choice
changes to None after you click Apply.
Connection screen) and relays the response back to the computer.
You can only select DNS Relay for one of the three servers; if you
select DNS Relay for a second or third DNS server, that choice
changes to None after you click Apply.
Select None if you do not want to configure DNS servers. If you do
not configure a DNS server, you must know the IP address of a
computer in order to access it.
not configure a DNS server, you must know the IP address of a
computer in order to access it.
Apply
Click Apply to save your changes back to the NBG-419N.
Reset
Click Reset to begin configuring this screen afresh.
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