DHCP Server!
　　no ip dhcp conflict logging
　　ip dhcp excluded-address 192.168.0.1 192.168.0.100
　　!
　　ip dhcp pool internalnet
　　network 192.168.0.0 /24
　　default-router 192.168.0.1
　　domain-name yourdomain.com
　　dns-server 192.168.0.2 192.168.0.3
　　netbios-name-server 192.168.0.4
　　netbios-node-type h-node
　　lease 5
　　!