Exit Points for a DHCP Server
The DHCP processing server (
not
the BOOTP/Relay Agent) provides three exit
points. These exit points are as follows:
v QIBM_QTOD_DHCP_REQ - DHCP Request Packet Validation
v QIBM_QTOD_DHCP_ABND - DHCP Address Binding Notification
v QIBM_QTOD_DHCP_ARLS - DHCP Address Release Notification
See the
System API Reference
, SC41-5801-03 for a detailed description of these
exit points and how to use them.
Examples of DHCP Configurations
Configuring DHCP for a Local Area Network
Figure 244 illustrates a Local Area Network (LAN) with a server and two of the
network’s client machines. In a network using DHCP, the server automatically
assigns configuration information to each client that includes IP address information.
Using DHCP in even a simple LAN, such as the one in the illustration, saves
administrative time and trouble. The automatic configuration assignment is
transparent to the user.
Address Range
In order for the server to automatically assign IP addresses, you must define an
address pool from which the server chooses the IP addresses. The starting address
for this example is 192.168.1.2, and the ending address is 192.168.1.4. Both the
starting address and the ending address fall within the range, and the server
considers them candidates for assignment to a client machine.
Configuring DHCP for a Local Area Network with a Router
Figure 245 on page 418 illustrates a LAN with a server, a router, and five of the
network’s client machines. In a network that uses DHCP, the server automatically
assigns configuration information that includes IP address information. The DHCP
Figure 244. LAN with Server and Two Clients
Chapter 17. DHCP Server 417