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CHAPTER 34
System Services Overview
DHCP Overview
DHCP Services for EX Series Switches Overview
Copyright © 2010, Juniper Networks, Inc.
DHCP Overview on page 547
DHCP Services for EX Series Switches Overview on page 547
DHCP/BOOTP Relay for EX Series Switches Overview on page 548
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 90.
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 Junos OS System
Basics Configuration Guide at
software/junos/junos96/index.html
switch includes the
dhcp
statement at the
commands and statements are the same as those used to configure DHCP for Juniper
Networks J Series Services Routers.
http://www.juniper.net/techpubs/software/junos/index.html
. The configuration for DHCP service on the EX Series
[edit system services]
hierarchy level. The
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