
114070 Rev. B 6-1
Chapter 6
Customizing DHCP
This chapter describes how to customize DHCP services. It assumes you have
configured an IP interface using the default parameters and enabled DHCP, as
described in Chapter 1, and that you understand the DHCP concepts in Chapter 2.
When you enable DHCP, all default parameter values are automatically enabled
on that interface (refer to Appendix B for default parameters). You may want to
change these default values, depending on your network requirements. This
chapter describes choices you can make to use DHCP most effectively on your
network.
Customizing DHCP Parameters
After you have enabled DHCP services on a router (refer to Chapter 1), you can
customize the router software for your specific requirements. Use the remaining
sections in this chapter as a guide.
Specifying Interfaces to Receive and Relay DHCP Packets
You must specify a forwarding route for DHCP packets by defining a relationship
between an interface you configure to receive DHCP packets and an interface you
want to transmit DHCP packets. When you define this type of relationship, the
interface pair appears in the BOOTP relay agent forwarding table. Refer to
“Specifying Interfaces to Receive and Relay BOOTREQUEST Packets” in
Chapter 5 for instructions.
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