Understanding Dhcp Features - Cisco 3020 - Catalyst Blade Switch Configuration Manual

Configuring DHCP Features
This chapter describes how to configure DHCP snooping and the option-82 data insertion features on the
switch.
For complete syntax and usage information for the commands used in this chapter, see the command
Note
reference for this release, and see the "DHCP Commands" section in the Cisco IOS IP Command
Reference, Volume 1 of 3: Addressing and Services, Release 12.2.
This chapter consists of these sections:
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Understanding DHCP Features

DHCP is widely used in LAN environments to dynamically assign host IP addresses from a centralized
server, which significantly reduces the overhead of administration of IP addresses. DHCP also helps
conserve the limited IP address space because IP addresses no longer need to be permanently assigned
to hosts; only those hosts that are connected to the network consume IP addresses.
These sections contain this information:
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•
•
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For information about the DHCP client, see the "Configuring DHCP" section of the "IP Addressing and
Services" section of the Cisco IOS IP Configuration Guide, Release 12.2.
OL-8915-01
Understanding DHCP Features, page 17-1
Configuring DHCP Features, page 17-6
Displaying DHCP Snooping Information, page 17-10
DHCP Server, page 17-2
DHCP Relay Agent, page 17-2
DHCP Snooping, page 17-2
Option-82 Data Insertion, page 17-3
C H A P T E R
Cisco Catalyst Blade Switch 3020 for HP Software Configuration Guide
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