Chapter 9 DHCP Server
LTE5366 Series User’s Guide
90
9.3 DHCP Server 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 LTE5366
sends to the DHCP clients.
To change your LTE5366’s static DHCP settings, click
Configuration > Network
>
DHCP Server
>
Advanced
. The following screen displays.
DHCP Relay
Select this option to have the LTE5366 forward DHCP requests to the DHCP server.
DHCP Server IP
This field is configurable only when you select
DHCP Relay
.
Enter the IP address of the actual remote DHCP server in this field.
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 Specify the first of the contiguous addresses in the IP address pool for LAN.
Pool Size
Specify 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
LTE5366'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 LTE5366 act as a DNS proxy. The LTE5366's LAN IP address
displays in the field to the right (read-only). The LTE5366 tells the DHCP clients on the LAN
that the LTE5366 itself is the DNS server. When a computer on the LAN sends a DNS query
to the LTE5366, the LTE5366 forwards the query to the LTE5366's system DNS server
(configured in the
WAN
screen) and relays the response back to the computer.
Cancel
Click
Cancel
to begin configuring this screen afresh.
Apply
Click
Apply
to save your changes back to the LTE5366.
Table 34 Configuration > Network > DHCP Server > General (continued)
LABEL
DESCRIPTION
