3Com 3CRWDR200A-75 - Manual (Page 49)

LAN Settings 49
This screen allows you to change the IP address and subnet mask.
1 IP Address: Enter the IP Address for the router.
2 Subnet Mask: Enter the Subnet Mask for the router.
3 Enable DHCP server on the LAN: Check this box to enable the DHCP
service on the router(enabled by default).
The Firewall Router contains a Dynamic Host Configuration (DHCP) server
that can automatically configure the TCP/IP settings of every computer on
your network.
4 Select Enable the DHCP server with the following settings: Enter the start
and end IP Address of your DHCP range. Enter the leased time in hours to
specify the frequency for DHCP assignment.
Check all of your settings and
click Save, then click Apply.
Auto IP Range: Click this to automatically allocate valid hosts in this
network, ie, Class C. And there is 253(254-1 for the router) available
addresses in the network.
5 3Com NBX Call Processor: If you have 3Com NBX Call Processor, enter its
IP Address here.
6 Enable DHCP Server Relay: Check this box to make the device act as a
DHCP relaying agent. Thus, it forwards DHCP requests to your existing
DHCP server instead. Please enter your DHCP server’s IP Address in the
fields.