Info
Datos
- Server: UDP 67
- Cliente: UDP 68
Configuracion
Crear DHCP Router
ip dhcp excluded-address [ip-start-range] [ip-end-range]
ip dhcp pool [pool-name]
network [ip-network] [dec-mask]
default-router [ip-default-router]
dns-server [ip-dns]
domain-name [domain-name]
IP Helper
int→ Dispositivos Finales
int [int S/S/P]
ip helper-address [ip-router-dhcp]
Activar DHCP Cliente
interface [int S/S/P]
ip address dhcp
no shut
DHCP Snooping
Nota: Configuracion de Switch
ip dhcp snooping
ip dhcp snooping vlan [vlan-id]
no ip dhcp snooping information option
int [int S/S/P]
ip dhcp snooping trust
Evitar Ataque Hambruna
NOTA: un valor para number va de 3-5
Nota2: Configuracion de Switch
int [int S/S/P]
ip dhcp snooping limit-rate [number]
IPv6
Nota: Existen 2 estados
- Stateful: Asigna IP y otros parametros
- Stateless: Los dispositivos se configuran mediante SLAAC y el servidor solo proporciona ajustes adicionales
Crear Pool DHCPv6
ipv6 dhcp pool [DHCPv6-pool-name]
address prefix [ipv6-network/prefix]
dns-server [ipv6-dns-server]
domain-name [domain-name]
Stateful DHCPv6
int [int S/S/P]
ipv6 dhcp server [DHCPv6-pool-name]
Stateless DHCPv6
int [int S/S/P]
ipv6 nd managed-config-flag
ipv6 dhcp server [DHCPv6-pool-name]
Dispositivos Finales IPv6
int [int S/S/P]
ipv6 enable
ipv6 address DHCP
no shut
IP-Helper DHCPv6
int [int S/S/P]
ipv6 dhcp relay destination 3001:ABCD:ABCD:12::2
Visualizacion
show ip dhcp binding → Ver si ha entregado ip por DHCPv4
show ipv6 dhcp binding → Ver si ha entregado ip por DHCPv6
show ip dhcp snooping
show ip dhcp pool