ZyXEL nbg-5715 用户指南
Chapter 13 DHCP Server
NBG5715 User’s Guide
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The following table describes the labels in this screen.
13.4 The Client List Screen
The DHCP table shows current DHCP client information (including IP Address, Host Name and MAC
Address) of network clients using the NBG5715’s DHCP servers.
Address) of network clients using the NBG5715’s DHCP servers.
Configure this screen to always assign an IP address to a MAC address (and host name). Click
Network > DHCP Server > Client List.
Network > DHCP Server > Client List.
Table 41
Network > DHCP Server > Advanced
LABEL
DESCRIPTION
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
Assigned by DHCP
Server
The NBG5715 passes a DNS (Domain Name System) server IP address (in the
order you specify here) to the DHCP clients. The NBG5715 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.
order you specify here) to the DHCP clients. The NBG5715 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.
First DNS Server
Second DNS Server
Third DNS Server
Select From ISP if your ISP dynamically assigns DNS server information (and
the NBG5715's WAN IP address). The field to the right displays the (read-only)
DNS server IP address that the ISP assigns.
the NBG5715'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.
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 NBG5715 act as a DNS proxy. The NBG5715's
LAN IP address displays in the field to the right (read-only). The NBG5715 tells
the DHCP clients on the LAN that the NBG5715 itself is the DNS server. When a
computer on the LAN sends a DNS query to the NBG5715, the NBG5715
forwards the query to the NBG5715'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.
LAN IP address displays in the field to the right (read-only). The NBG5715 tells
the DHCP clients on the LAN that the NBG5715 itself is the DNS server. When a
computer on the LAN sends a DNS query to the NBG5715, the NBG5715
forwards the query to the NBG5715'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.
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.
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 NBG5715.
Cancel
Click Cancel to begin configuring this screen afresh.