User Manual

Chapter 9 DHCP Server
LTE3301 Series User’s Guide
84
9.3 DHC P Se rve r Adva nc e d Sc re e n
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 LTE3301
sends to the DHCP clients.
To change your LTE3301’s static DHCP settings, click Ne two rk > DHC P Se rve r > Adva nc e d . The following
screen displays.
DHCP Server IP This field is configurable only when you select DHC P Re la y.
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 Inte rfa c e G roup screen.
DHCP Server Select Ena ble to activate DHCP for the VLAN group.
DHCP IP Address Enter the LAN IP address you want to assign to your LTE3301 in this VLAN group.
First DNS Server
Second DNS Server
Specify the IP addresses up to two DNS servers for the DHCP clients to use.
Select O bta ine d Fro m ISP if your ISP dynamically assigns DNS server information (and the
LTE3301's WAN IP address). The field to the right displays the (read-only) DNS server IP
address that the ISP assigns.
Select Use r- De fine d 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 Re la y to have the LTE3301 act as a DNS proxy. The LTE3301's LAN IP address
displays in the field to the right (read-only). The LTE3301 tells the DHCP clients on the LAN
that the LTE3301 itself is the DNS server. When a computer on the LAN sends a DNS query
to the LTE3301, the LTE3301 forwards the query to the LTE3301's system DNS server
(configured in the WAN screen) and relays the response back to the computer.
Apply Click Ap ply to save your changes back to the LTE3301.
Cancel Click Ca nc e l to begin configuring this screen afresh.
Table 33 Network > DHCP Server > General (continued)
LABEL DESC RIPTIO N