Chapter 2: IP Addressing 

Commands:

2.3.1 Variable-Length Subnet Masks:

Router(config)# ip subnet-zero

 

2.3.2 Classless and Classful Routing Protocols:

Router(config)# router rip
Router(router-config)# version 2

 

2.5.2 Discontiguous Subnets

Router(config-router)# no auto-summary

 

2.6.1 Using IP Unnumbered

Router(config-if)# ip unnumbered type number

 

2.7.3 Configuring IOS DHCP Server

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

DHCP Server Commands:
Router(config-dhcp)# network network-number [mask | /prefix-length]
Router(config-dhcp)# default-router address [address2...address8]
Router(config-dhcp)# dns-server address [address2...address8]
Router(config-dhcp)# domain-name domain
Router(config-dhcp)# lease [days [hours][minutes] | infinite}
Router(config-dhcp)# netbios-name-server address [address2...address8]

Commands for Monitoring DHCP:
Router# show ip dhcp binding [address]
Router# show ip dhcp conflict [address]
Router# show ip dhcp database [url]
Router# show ip dhcp server statistics

 

2.8.2 Configuring IP Helper Addresses

Router(config-if)# ip helper-address address
Router(config)# ip forward-protocol {udp [port] | nd | sdns}