Avaya Configuring SNMP, RMON, BOOTP, DHCP, and RARP Services Manuel d'utilisateur Page 80

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Configuring SNMP, RMON, BOOTP, DHCP, and RARP Services
3-2 114070 Rev. A
Figure 3-1. 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. F
igure 3-2 illustrates how
BOOTP works when the client and the server are on different physical networks.
Figure 3-2. 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
SNM0002A
3. Server transmits
BOOTREPL
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)
SNM0003A
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