Juniper JUNOSE 11.0.X MULTICAST ROUTING, Configuration Manual

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Chapter 17
DHCP Overview
The Dynamic Host Configuration Protocol (DHCP) provides a mechanism through
which computers using Transmission Control Protocol/IP (TCP/IP) can obtain protocol
configuration parameters automatically from a DHCP server on the network.
The following sections provide overview information for the E Series router DHCP
support:
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DHCP Overview Information on page 455
■
DHCP Platform Considerations on page 456
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DHCP References on page 457
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Configuring the DHCP Access Model on page 457
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Configuring DHCP Proxy Clients on page 458
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Logging DHCP Packet Information on page 459
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Viewing and Deleting DHCP Client Bindings on page 460
DHCP Overview Information
The most important configuration parameter carried by DHCP is the IP address. A
computer must be initially assigned a specific IP address that is appropriate to the
network to which the computer is attached and that is not assigned to any other
computer on that network. If you move a computer to a new network, it must be
assigned a new IP address for that new network. You can use DHCP to manage these
assignments automatically.
An IP client contacts a DHCP server for configuration parameters. The DHCP server
is typically centrally located and operated by the network administrator. Because
the server is run by a network administrator, DHCP clients can be reliably and
dynamically configured with parameters appropriate to the current network
architecture.
You can configure the E Series router to support the following DHCP features:
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DHCP access model
■
DHCP proxy client
■
DHCP relay
■
DHCP relay proxy
DHCP Overview Information
■ 455