Observa Telecom TD851W User Manual page 31

LAN IP Address: Displays the LAN IP address of the Modem Router
Subnet Mask: Displays the subnet mask of the Modem Router.
DHCP Mode: Options available are None, DHCP Relay and DHCP Server.
1) None: In this mode, the Modem Router will do nothing when the host requests an IP address
by DHCP protocol. The screen will be shown as in Figure 4-9.
2) DHCP Relay: In this mode, the Router will work as a DHCP Relay. A DHCP relay is a device
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
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide
Figure 4-8
Figure 4-9
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