The DHCP server assumes that all IP addresses in a DHCP address pool subnet are available for
assigning to DHCP clients. You must
specify the IP addresses that the
DHCP server should not assign to
clients. These IP address are usually static addre
sses reserved for the rout
er interface, switch
management IP address, servers, and local network printer. The
ip dhcp excluded-address
command
prevents the router from assigning IP addresses with
in the configured range. The following commands
exclude the first 10 IP addresses from each pool fo
r the LANs attached to R1. These addresses will not
be assigned to any DHCP clients.