DHCP

ROUTER模拟PC作为DNCP——client

configure terminal
no ip domain-lookup
#no ip routing
line console 0
exec-timeout 0
logging synchronous

hostname dhcp-client
interface ethernet 0/0
ip address dhcp
no shutdown
############################################################

ROUTER作为DNCP——server

configure terminal
no ip domain-lookup
line console 0
exec-time 0
logging synchronous

hostname dhcp-server
interface ethernet 0/0
#interface serial 0/0
#clock rate 64000 (if there is a helper,connect to helper)
ip address 192.168.2.4 255.255.255.0
no shutdown
exit

ip dhcp excluded-address 192.168.1.1 192.168.1.20
no ip dhcp conflict logging
ip dhcp pool DAVY
network 192.168.1.0 /24
default-router 192.168.1.1
dns-server 8.8.8.8
domain-name www.davy.org
#option 150 ip x.x.x.x
lease 7
exit

#ip route 192.168.1.0 255.255.255.0 192.168.2.2 (if there is a helper,connected route 静态路由 目的网络  本地端口或对端ip)

show ip dhcp binding
show ip dhcp server statistics
debug ip dhcp server events
##############################################################

ROUTER作为DNCP——helper

configure terminal
no ip domain-lookup
line console 0
exec-time 0
logging synchronous

hostname dhcp-helper
interface ethernet X/X
ip address 192.168.1.1 255.255.255.0
ip helper-address 192.168.2.4（dhcp-server）
no shutdown
exit

interface serial 1/0
ip address 192.168.2.2 255.255.255.0
no shutdown