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Monday, February 20, 2012

Dhcp Configuration file Logic

Posted by Raju Gupta at 10:27 PM – 0 comments
 

The first step in configuring a DHCP server is to create the configuration file that stores the network information for the clients. Use this file to declare options and global options for client systems.
The configuration file can contain extra tabs or blank lines for easier formatting. Keywords are case-insensitive and lines beginning with a hash sign (#) are considered comments.
There are two types of statements in the configuration file:
  • Parameters — State how to perform a task, whether to perform a task, or what network configuration options to send to the client.
  • Declarations — Describe the topology of the network, describe the clients, provide addresses for the clients, or apply a group of parameters to a group of declarations.
The parameters that start with the keyword option are reffered to as options. These options control DHCP options; whereas, parameters configure values that are not optional or control how the DHCP server behaves.
Parameters (including options) declared before a section enclosed in curly brackets ({ }) are considered global parameters. Global parameters apply to all the sections below it.


"If the configuration file is changed, the changes do not take effect until the DHCP daemon is restarted with the command service dhcpd restart."
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