Avaya Configuring SNMP, BOOTP, DHCP, and RARP Services Manuel d'utilisateur télécharger pdf (Page 41)

SNMP, BootP, DHCP, and RARP Concepts

303542-A Rev 00

2-11

Figure 2-3. BootP Client and Server on Different Physical Networks

The client transmits a BOOTREQUEST packet to the IP broadcast address

(255.255.255.255). The router receives the BOOTREQUEST packet at an

interface that you configured to receive BOOTREQUEST packets (an input

interface). If the BOOTREQUEST packet has an address other than

255.255.255.255, the router drops the packet.

Figure 2-4

shows the fields in the BOOTREQUEST and BOOTREPLY packets.

3. Server transmits

BOOTREPLY

packet to BOOTP

relay agent.

1. Client broadcasts

a request to boot from a

remote server

(BOOTREQUEST).

4. BOOTP relay

agent transmits

BOOTREPLY

packet to client.

2. BOOTP relay

agent transmits

BOOTREQUEST

packet to servers

on other networks.

Client

Server

Router (BOOTP

relay agent)

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Avaya Configuring SNMP, BOOTP, DHCP, and RARP Services Manuel d'utilisateur Page 41