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    DHCP Overview

    The Dynamic Host Configuration Protocol (DHCP) is an automatic configuration protocol on IP networks, which eliminates the need for intervention by a network administrator. Networks and systems connected to IP networks must be configured before they can communicate with other computers on the network. DHCP maintains a database that helps to track computers that have been connected to the network and this prevents two computers from accidentally being configured with the same IP address.

    The IP address is the most important configuration parameter of the DHCP. 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 the 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. The server is run by a network administrator so that DHCP clients can be reliably and dynamically configured with parameters appropriate to the current network architecture.

    You can configure the MX router to support the following DHCP features:

    • DHCP Configuration under APN Configuration
    • DHCP Profile Configuration

    DHCP Protocol

    The DHCP is based on a bootstrap protocol (BOOTP) that provides clients the means to allot their own IP address, the IP address of a server host, and the name of a bootstrap file. DHCP servers can serve requests from BOOTP clients and provide additional capabilities beyond BOOTP, such as the automatic allocation of reusable IP addresses and additional configuration options.

    DHCP provides two primary functions:

    • Allocating temporary or permanent IP addresses to clients
    • Storing, managing, and providing client configuration parameters

    Published: 2011-11-22