How to Configure DHCP on a Cisco Router or Cisco Switch?
1. Configure an IP address on the router’s Ethernet port, and bring up the interface. Router(config)# interface ethernet0/0 Router(config-if)#ip address 1.1.1.1 255.0.0.0 Router(config-if)# no shutdown 2. Create a DHCP IP address pool for the IP addresses you want to use. Router(config)# ip dhcp pool mypool 3. Specify the network and subnet for the addresses you want to use from the pool. Router(dhcp-config)# network 1.1.1.0 /8 4. Specify the DNS domain name for the clients. Router(dhcp-config)#domain-name mydomain.com 5. Specify the primary and secondary DNS servers. Router(dhcp-config)#dns-server 1.1.1.10 1.1.1.11 6. Specify the default router (i.e., default gateway). Router(dhcp-config)#default-router 1.1.1.1 7. Specify the lease duration for the addresses you’re using from the pool. Router(dhcp-config)#lease 7 8. Exit Pool Configuration Mode . Router(dhcp-config)#exit