Configuring Dynamic Host Configuration Protocol; Overview - 3Com 3C421600A Management Manual

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Overview

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ONFIGURING
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ONFIGURATION
This chapter contains the following information:
Overview
Configuring the RAS 1500 for Dynamic Host Configuration Protocol
User Datagram Protocol Broadcast Forwarding
Dynamic Host Configuration Protocol (DHCP) allows a server to provide
Internet Protocol (IP) information (including IP address, subnet mask,
default gateway, Windows Internet Naming Service (WINS) server
addresses, and lease duration) to a local area network (LAN) user or a
remote dial-in user, when the user requests it.
DHCP provides IP information on an as-needed basis. A user receives IP
information when it is required and "returns" the IP information when
finished with it. This is useful when IP addresses are limited or used
temporarily.
DHCP allows centralized management and configuration of IP
information. You avoid manually configuring each computer on the
network (and at remote sites).
The SuperStack Remote Access System (RAS) 1500 can serve in one of
two roles in the implementation of DHCP. As a "DHCP server" it provides
information directly to local LAN users and dial-in users. As a "DHCP
proxy server" it relays information from a DHCP server to local LAN users
and dial-in users.
Five DHCP scenarios are shown below. The RAS 1500 acts as a DHCP
server in scenarios 1 and 2. It is acts as a DHCP proxy server in scenarios 3,
4, and 5.
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