D-Link DWR-921 User Manual page 115

DWR-921 4G LTE Router
User Manual
Parameter
Mode of IPv4 address
assignment
Start IP
End IP
SELECT ADDRESS
RANGE
Lease time
DNS relay
Dynamic IP Addresses
An operating mode of the router's DHCP server.
Disable: The router's DHCP server is disabled, clients' IP
•
addresses are assigned manually.
DHCP: The router assigns IP addresses to clients
•
automatically in accordance with the specified parameters.
When this value is selected, the Start IP, End IP, Lease
time fields, the SELECT ADDRESS RANGE button, and
the DNS relay switch are displayed on the tab. Also when
this value is selected, the DHCP Options, Static IP
Addresses, and Hosts sections are displayed on the tab.
Relay: An external DHCP server is used to assign IP
•
addresses to clients. When this value is selected, the
External DHCP server IP, Option 82 Circuit ID,
Option 82 Remote ID, and Option 82 Subscriber ID
fields are displayed on the tab. Available if the Router,
WISP Repeater, or Mobile Internet mode was selected
in the Initial Configuration Wizard.
The start IP address of the address range used by the DHCP server
to distribute IP addresses to clients.
The end IP address of the address range used by the DHCP server to
distribute IP addresses to clients.
Use the button to set one of the available IP address ranges. In the
window displayed, select the needed range and click the SAVE
button to automatically fill in the Start IP and End IP fields.
The lifetime of IP addresses leased by the DHCP server. At the end
of this period the leased IP address is revoked and can be distributed
to another device, unless the previous device has confirmed the need
to keep the address.
Move the switch to the right so that the devices connected to the
router obtain the address of the router as the DNS server address.
Move the switch to the left so that the devices connected to the
router obtain the address transmitted by the ISP or specified on the
Advanced / DNS page as the DNS server address.
Page 115 of 255
Configuring via Web-based Interface
Description