Dhcp Overview; Dhcp Services For Ex Series Switches Overview - Juniper JUNOS OS 10.4 - FOR EX REV 1 Manual

CHAPTER 28
System Services Overview

DHCP Overview

DHCP Services for EX Series Switches Overview

Copyright © 2010, Juniper Networks, Inc.
DHCP Overview on page 539
DHCP Services for EX Series Switches Overview on page 539
DHCP/BOOTP Relay for EX Series Switches Overview on page 540
A Dynamic Host Configuration Protocol (DHCP) server can automatically allocate IP
addresses and also deliver configuration settings to client hosts on a subnet.
DHCP is particularly useful for managing a pool of IP addresses among hosts. An IP
address can be leased to a host for a limited period of time, allowing the DHCP server to
share a limited number of IP addresses among a group of hosts that do not need
permanent IP addresses.
DHCP, through the use of the automatic software download feature, can also be used
to install software packages on Juniper Networks EX Series Ethernet Switches. Users
can define a path to a software package on the DHCP server, and then the DHCP server
communicates this path to EX Series switches acting as DHCP clients as part of the
DHCP message exchange process. The DHCP clients that have been configured for
automatic software download receive these messages and, when the software package
name in the DHCP server message is different from that of the software package that
booted the DHCP client switch, download and install the software package. See
"Upgrading Software Using Automatic Software Download on EX Series Switches" on
page 96.
To configure DHCP access service for an EX Series switch, you can use either the Junos
operating system (Junos OS) command-line interface (CLI) or the J-Web user interface.
For detailed information about configuring DHCP services, see the
. The configuration for DHCP service on the EX Series switch includes
Configuration Guide
the dhcp statement at the
statements are the same as those used to configure DHCP for Juniper Networks J Series
Services Routers.
You can monitor DHCP services for the switch by using either operational-mode CLI
commands or the J-Web interface.
[edit system services] hierarchy level. The commands and
Junos OS System Basics
539