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1740 SHDSL 2/4-Wire Router User’s Guide
CHAPTER 9 DHCP
The router can be set as a Dynamic Host Configuration Protocol (DHCP) server or a DHCP relay. The
former acts like an IP address pool. Upon power on, the PCs on the same domain will request an
available IP address from the IP address pool of DHCP server. DHCP provides a centralized approach to
allocating IP addresses. It allows IP addresses to be dynamically assigned on an as needed basis, from a
pool of addresses. DHCP relay acts as an intermediate station. The DHCP server is at a remote location.
PCs are directed to the remote location by the DHCP relay to obtain an available IP address.
9.1 DHCP Server
When a workstation is configured for automatic IP address assignment, it broadcasts a request to the
LAN.
When the router is configured as a DHCP server, the IP addresses in the DHCP pool should be at the
same network segment as the DHCP server.
DNS IP must be a valid parameter to activate the DHCP server to forward the DNS IP address to the
workstations. The router supports DNS Proxy function. It can forward the name of the website to the
correct DNS server to obtain the correct IP address.
To configure the router as a DHCP server, click on DHCP on the Advanced menu bar. Click Enable in the
DHCP Server field, and fill out the parameters. Click Apply to submit the settings.
1740-A2-GB20-00 July 2004 49