Product specifications

Efficient Networks
®
Router family
Technical Reference Guide
Chapter 4: System Management
Efficient Networks
®
Page 4-3
NOTE:
For information on configuring the PC for DHCP, see “Configuring Your Computer” on
page 3-14.
DHCP Client Requests
Before becoming active, the router’s DHCP server attempts to locate other active
DHCP servers on the network, such as Windows NT servers. If one is detected, the
router’s DHCP server disables itself.
When the WAN link activates and the source IP address or mask is undefined (i.e.
0.0.0.0), the router places a DHCP client request over the WAN link. The router may
learn the following parameters:
• DNS address
• Default gateway
• Syslog server IP address
• Time server IP address
• Source IP address to use
To see the gateway and source IP addresses that were returned, use the iproutes
command.
The IP addresses and options assigned to a client are collectively called the “lease”.
The lease is only valid for a certain period of time and is automatically renewed by the
client.
DHCP Administration and Configuration
The DHCP administration and configuration process is divided into the following
functions:
• Manipulating Subnetworks and Explicit Client Leases
• Setting Option Values
• Managing BootP
• Configuring BootP/DHCP Relays
• Defining Option Types
• Other information
The configuration procedures that follow are based on entering the commands
through the Command Line Interface, for configuration via the Web Management
interface, see “DCHP Configuration” on page 8-35.