DHCP – Dynamic Host Configuration Protocol
Exemple de configuration :
R1(config)#int fa0/0 R1(config-if)#ip address 192.168.80.254 255.255.255.0
R1(config)#service dhcp
R1(config)#ip dhcp pool MY-POOL
R1(dhcp-config)#network 192.168.80.0 /24
R1(dhcp-config)#default-router 192.168.80.254
R1(dhcp-config)#netbios-name-server 192.168.80.200
R1(dhcp-config)#netbios-node-type h-node
R1(dhcp-config)#dns-server 192.168.80.201
R1(dhcp-config)#lease 2 8
R1(config)#ip dhcp ping packets 5 R1(config)#ip dhcp ping timeout 300
Exclusion
R1(config)#ip dhcp excluded-address 192.168.80.202 R1(config)#ip dhcp excluded-address 192.168.80.203
Reservation
R1(config)#ip dhcp pool MY-PC1 R1(dhcp-config)#host 192.168.80.10 /24 R1(dhcp-config)#hardware-address 0010.4b31.9e20
Vérifications et Debug:
R1#show ip dhcp bindingBindings from all pools not associated with VRF:
IP address Client-ID/ Lease expiration Type
Hardware address/
User name
192.168.80.2 0010.4b31.9e20 Feb 17 2007 12:00 AM Automatic
192.168.80.10 0010.4b31.9999 Infinite Manual
R1#show ip dhcp conflict
IP address Detection method Detection time VRF
R1#debug ip dhcp server ?
class Class-based address allocation
events Report address assignments, lease expirations, etc.
linkage Show database linkage
packet Decode message receptions and transmissions
Configuration
R1(config)#int fa0/0 R1(config-if)#ip address 192.168.80.254 255.255.255.0
R1(config)#service dhcp R1(config)#ip dhcp pool MY-POOL R1(dhcp-config)#network 192.168.80.0 /24 R1(dhcp-config)#default-router 192.168.80.254 R1(dhcp-config)#netbios-name-server 192.168.80.200 R1(dhcp-config)#netbios-node-type h-node R1(dhcp-config)#dns-server 192.168.80.201 R1(dhcp-config)#lease 2 8
R1(config)#ip dhcp ping packets 5 R1(config)#ip dhcp ping timeout 300