Avaya Configuring BOOTP Services Manual de usuario descargar pdf (Pagina 49)

SNMP, BootP, BootP/DHCP Relay, and DHCP Server Concepts

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For example, when the DHCP server starts up, it connects to the NetID Server

Manager and requests its configuration. When the DHCP server assigns an IP

address to a client, it sends the client’s host name and IP address to the NetID

Server Manager. The NetID Server Manager then sends this information to the

database.

The NetID Server Manager reduces the load on the database, because each DHCP

server is not polling for configuration changes and does not require an active

(resource-consuming) connection to the database. It also reduces the load on the

network, because it is the only component that polls the database for configuration

changes.

BootP/DHCP Relay Implementation

The BootP/DHCP relay implementation allows you to configure a router to act as

a BootP relay agent. The BootP relay agent forwards DHCPREQUEST packets to

DHCP servers on other subnets and forwards DHCPREPLY packets back to

DHCP clients.

You must enable the BootP relay agent on the interface to the subnet to be served

and configure it with the IP address of the DHCP server. For more information

about configuring a BootP relay agent, see “Specifying Interfaces to Receive and

Forward DHCP Packets” on page 5-2.

Figure 2-5

illustrates a BootP/DHCP relay implementation.

Figure 2-5. BootP/DHCP Relay Implementation

DHCP server

Router

BootP

(relay agent)

DC0005A

IP network

DHCP

client

DHCP

client

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Avaya Configuring BOOTP Services Manual de usuario Pagina 49