
Configuring SNMP, RMON, BOOTP, DHCP, and RARP Services
4-2 114070 Rev. A
Acquiring a New IP Address and New Configuration Parameters
This process involves the following stages:
• Identifying DHCP servers
• Requesting IP information
• Receiving IP information
• Accepting IP information
F
igure 4-1 shows the first stage of the process.
Figure 4-1. Identifying DHCP Servers
To identify DHCP servers, the client broadcasts a DHCPDISCOVER packet.
F
igure 4-2 shows the fields in a DHCP packet. The packet relay process uses these
fields as follows:
1. A BOOTP relay agent receives the packet, and if it accepts the packet,
transmits the packet to DHCP servers on other networks.
3. Servers transmit
DHCPOFFER
packets to BOOTP
relay agent.
1. Client broadcasts
a DHCPDISCOVER
packet.
4. BOOTP relay
agent transmits
DHCPOFFER
packets to client.
2. BOOTP relay agent
transmits the
DHCPDISCOVER
packet to servers
on other networks.
Router (BOOTP
Relay Agent)
Client
Server
SNM0005A
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