Avaya Configuring SNMP, BOOTP, DHCP, and RARP Services User Manual download pdf (Page 64)

Configuring SNMP, BOOTP, DHCP, and RARP Services

2-2

Figure 2-1. Client and Server on the Same Physical Network

If, however, the client and the server are on different physical networks, a BOOTP

relay agent (also known as a BOOTP Gateway) must forward BOOTP packets to

their correct destinations. When you conﬁgure a Bay Networks router for BOOTP

services, the router acts as a BOOTP relay agent. Figure 2-2 illustrates how

BOOTP works when the client and the server are on different physical networks.

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

Server sends acknowledgement

to the client (BOOTREPLY).

Client broadcasts a request

to boot from a remote server

(BOOTREQUEST).

Client Server

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 User Manual Page 64