Chapter 2: Advanced IP Addressing Management

Commands:

2.6.1 Static NAT:

Router(config)#  ip  nat  inside  source  static  ip-add-local  ip-add-global

LAN interface:
Router(config-if)#  ip  nat  inside

WAN interface:
Router(config-if)#  ip  nat  outside

 

2.6.2 Dynamic NAT:

Router(config)# ip nat pool pool-name start-ip-add end-ip-add netmask mask 
Router(config)# access-list number permit network-address wildcard-mask 
Router(config)# ip nat inside source list number pool pool-name

LAN interface: 
Router(config-if)# ip nat inside 

WAN interface: 
Router(config-if)# ip nat outside

 

2.6.3 NAT Overloading

Router(config)# ip nat pool pool-name start-ip-add end-ip-add netmask mask
Router(config)# access-list number permit network-address wildcard-mask
Router(config)# ip nat inside source list number pool pool-name overload

LAN interface:
Router(config-if)# ip nat inside

WAN interface:
Router(config-if)# ip nat outside

 

2.6.3 TCP Load Distribution (Round-Robin or Rotary)

Router(config)# ip nat pool pool-name start-ip-add end-ip-add prefix-length bits type rotary Router(config)# access-list acl-number permit ip-add-virtual-host

Router(config)# ip nat inside destination list acl-number pool pool-name

LAN interface:
Router(config-if)# ip nat inside

WAN interface:
Router(config-if)# ip nat outside

 

2.6.3 Show commands

Router# show ip nat translations
Router# show ip nat statistics

2.6.3 Miscellaneous commands

Router(config)# ip nat translation timeout seconds
Router(config)# ip nat translation [tcp, udp, dns]-timeout seconds

2.7.2
2.7.3
Usually Serial Interface

Router(config-if)# ip unnumbered interface

2.8.1 Configuring DHCP Pool

Router(config)# ip dhcp pool pool-name

Router(dhcp-config)# network network-address /bits-borrowed-or-mask
Router(dhcp-config)# default-router default-gateway-address

 

2.8.1 Excluding Specific Addresses

Router(config)# ip dhcp excluded-address start-ip-add end-ip-add

2.9.3 On the client's router

Router(config-if)# ip helper-address ip-add-dhcp-server