TP-Link TD-9970B User Manual page 60

TD-W9970/TD-W9970B
Start IP Address: Enter a value for the DHCP server to start with when issuing IP addresses.
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The default Start IP Address is 192.168.1.100.
End IP Address: Enter a value for the DHCP server to end with when issuing IP addresses.
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The default End IP Address is 192.168.1.199.
Lease Time: The Leased Time is the amount of time in which a network user will be allowed
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connection to the modem router with their current dynamic IP address. Enter the amount of
time, in hours, then the user will be "leased" this dynamic IP address. After the dynamic IP
address has expired, the user will be automatically assigned a new dynamic IP address. The
default is 1440 minutes.
Default Gateway - (Optional.) It is suggested to input the IP address of the LAN port of the
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modem router. The default value is 192.168.1.1.
Default Domain - (Optional.) Input the domain name of your network.
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Primary DNS - (Optional.) Input the DNS IP address provided by your ISP or consult your
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ISP.
Secondary DNS - (Optional.) Input the IP address of another DNS server if your ISP provides
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two DNS servers.
DHCP Relay: Select Relay, then you will see the next screen, and the modem router will work
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as a DHCP Relay. A DHCP relay is a computer that forwards DHCP data between computers
that request IP addresses and the DHCP server that assigns the addresses. Each of the
device's interfaces can be configured as a DHCP relay. If it is enabled, the DHCP requests
from local PCs will forward to the DHCP server runs on WAN side. To have this function
working properly, please run on router mode only, disable the DHCP server on the LAN port,
and make sure the routing table has the correct routing entry.
300Mbps Wireless N USB VDSL/ADSL Modem Router User Guide
Figure 4-36
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