Garmin HM210DP/DI manual Configuring DHCP, Overview of DHCP, DHCP Modes, DHCP Server

Configuring DHCP

7 Configuring DHCP

You can configure your network and HM210dp/di to use the Dynamic Host Configuration Protocol (DHCP). This chapter provides instructions for implementing DHCP on your network.

7.1Overview of DHCP

DHCP is a protocol that enables network administrators to centrally manage the assignment and distribution of IP information to computers on a network.

When you enable DHCP on a network, you allow a device – such as the HM210dp/di or a router located with your ISP – to assign temporary IP addresses to your computers whenever they connect to your network. The assigning device is called a DHCP Server and the receiving device is a DHCP Client.

The DHCP server draws from a defined pool of IP addresses and “leases” them for a specified amount of time to your computers when they request an Internet session. It monitors, collects, and redistributes the addresses as needed.

On a DHCP-enabled network, the IP information is assigned dynamically rather than statically. A DHCP client can be assigned a different address from the pool each time it reconnects to the network.

DHCP allows you to manage and distribute IP addresses throughout your network from a central computer. Without DHCP, you would have to configure each computer separately with IP addresses and related information. DHCP is commonly used with large networks and those that are frequently expanded or otherwise updated

7.2DHCP Modes

The HM210dp/di can be configured as a DHCP server, DHCP relay agent, or in some cases, a DHCP client.

DHCP Server

The HM210dp/di will maintain the pool of addresses and distribute them to your LAN computers. If the pool of addresses includes private IP addresses, you must also configure the Network Address Translation (NAT) service, so that the private addresses can be

42 EN/LZT 108 6492 R2 - October 2003