CHAPTER 34
System Services Overview
•
DHCP Overview on page 547
DHCP Overview
•
DHCP Services for EX Series Switches Overview on page 547
•
DHCP/BOOTP Relay for EX Series Switches Overview on page 548
DHCP Services for EX Series Switches Overview
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
http://www.juniper.net/techpubs/software/junos/index.html
software/junos/junos96/index.html
. The configuration for DHCP service on the EX Series
switch includes the
dhcp
statement at the
[edit system services]
hierarchy level. The
commands and statements are the same as those used to configure DHCP for Juniper
Networks J Series Services Routers.
547
Copyright © 2010, Juniper Networks, Inc.
Summary of Contents for JUNOS OS 10.3 - SOFTWARE
Page 325: ...CHAPTER 17 Operational Mode Commands for System Setup 229 Copyright 2010 Juniper Networks Inc ...
Page 1323: ...CHAPTER 56 Operational Mode Commands for Interfaces 1227 Copyright 2010 Juniper Networks Inc ...
Page 2841: ...CHAPTER 86 Operational Commands for 802 1X 2745 Copyright 2010 Juniper Networks Inc ...
Page 3367: ...CHAPTER 113 Operational Mode Commands for CoS 3271 Copyright 2010 Juniper Networks Inc ...
Page 3435: ...CHAPTER 120 Operational Mode Commands for PoE 3339 Copyright 2010 Juniper Networks Inc ...
Page 3529: ...CHAPTER 126 Operational Mode Commands for MPLS 3433 Copyright 2010 Juniper Networks Inc ...