Chapter 9 DHCP Server
LTE3301-M209 User’s Guide
84
9.3 Advanced Screen
This screen allows you to assign IP addresses on the LAN to specific individual computers based on their
MAC addresses. You can also use this screen to configure the DNS server information that the Zyxel
Device sends to the DHCP clients.
To change your Zyxel Device’s static DHCP settings, click
Network
>
DHCP Server
>
Advanced
. The
following screen displays.
Lease Time
This is the period of time DHCP-assigned addresses is used. DHCP automatically assigns IP
addresses to clients when they log in. DHCP centralizes IP address management on
central computers that run the DHCP server program. DHCP leases addresses, for a
period of time, which means that past addresses are “recycled” and made available for
future reassignment to other systems.
VLAN DHCP x Server
This section is configurable only when you create a corresponding VLAN group in the
Interface Group
screen.
DHCP Server
Select
Enable
to activate DHCP for the VLAN group.
IP Pool Starting Address Enter the LAN IP address you want to assign to your Zyxel Device in this VLAN group.
Pool Size
This field specifies the size, or count of the IP address pool for LAN.
First DNS Server
Second DNS Server
Specify the IP addresses up to two DNS servers for the DHCP clients to use.
Select
Obtained From ISP
if your ISP dynamically assigns DNS server information (and the
Zyxel Device'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.
Select
DNS Relay
to have the Zyxel Device act as a DNS proxy. The Zyxel Device's LAN IP
address displays in the field to the right (read-only). The Zyxel Device tells the DHCP clients
on the LAN that the Zyxel Device itself is the DNS server. When a computer on the LAN
sends a DNS query to the Zyxel Device, the Zyxel Device forwards the query to the Zyxel
Device's system DNS server (configured in the
WAN
screen) and relays the response back
to the computer.
Apply
Click
Apply
to save your changes back to the Zyxel Device.
Cancel
Click
Cancel
to begin configuring this screen afresh.
Table 34 Network > DHCP Server > General (continued)
LABEL
DESCRIPTION
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