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CHAPTER 34
System Services Overview
•
DHCP Overview
•
DHCP Services for J-EX Series Switches Overview on page 445
•
DHCP/BOOTP Relay for J-EX Series Switches Overview on page 446
DHCP Services for J-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 J-EX Series Switches. Users can define a path to a
software package on the DHCP server, and then the DHCP server communicates this
path to J-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 J-EX Series Switches” on page 82.
To configure DHCP access service for a J-EX Series switch, you can use either the 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/
. The
configuration for DHCP service on the J-EX Series switch includes the
dhcp
statement
at the
[edit system services]
hierarchy level.
You can monitor DHCP services for the switch by using either operational-mode CLI
commands or the J-Web interface.
445
Summary of Contents for PowerConnect J-EX8208
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Page 383: ...CHAPTER 21 Configuration Statements for Power Management 311 ...
Page 387: ...CHAPTER 22 Operational Mode Commands for Power Management 315 ...
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Page 505: ...CHAPTER 33 Operational Mode Commands for User and Access Management 433 ...
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Page 581: ...CHAPTER 38 Operational Mode Commands for System Services 509 ...
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Page 631: ...CHAPTER 41 Configuration Statements for System Monitoring 559 ...
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Page 683: ...CHAPTER 42 Operational Mode Commands for System Monitoring 611 ...
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Page 907: ...CHAPTER 49 Operational Mode Commands for Virtual Chassis 835 ...
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Page 1061: ...CHAPTER 56 Operational Mode Commands for Interfaces 989 ...
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Page 1297: ...CHAPTER 63 Operational Mode Commands for Bridging and VLANs 1225 ...
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Page 1461: ...CHAPTER 69 Operational Mode Commands for Spanning Tree Protocols 1389 ...
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Page 2215: ...CHAPTER 80 Operational Mode Commands for IGMP Snooping and Multicast 2143 ...
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Page 2537: ...CHAPTER 86 Operational Commands for 802 1X 2465 ...
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Page 2907: ...CHAPTER 106 Operational Mode Commands for Firewall Filters 2835 ...
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Page 3049: ...CHAPTER 112 Operational Mode Commands for CoS 2977 ...
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Page 3117: ...CHAPTER 119 Operational Mode Commands for PoE 3045 ...
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Page 3211: ...CHAPTER 125 Operational Mode Commands for MPLS 3139 ...
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