Configure a Cisco 3640 Router (or similar) for ISP Connection

You are responsible for connecting the network to the Internet using Serial interface 3/3 on corporate 3640 router. The ISP has given you the address 171.69.68.13/30 for the corporate router to attach to the Internet. What do you need to configure to allow users in the entire network to use the internet? List all the steps.

1. Connect to the corporate router using a serial console connection and configure the serial port on the computer to enable communication with the router.
2. Login to the router if required to access the serial console.
3. Type “enable” and press the Enter key, and the enter the “enable” password to gain administrative access to the router.
4. Type the “show start” command to view the current settings on the router, particularly serial interface 3/3.
5. Type “conf t” to enter the configuration terminal mode.
6. Type “int serial 3/3” and press Enter to enter the interface configuration mode.
7. Configure the required serial encapsulation specified by the ISP in order for the serial interface to work with the ISP connection. For example “encapsulation ppp” and press Enter.
8. Configure speed, framing and clock if required.
9. Set the IP address specified by the ISP.
10. Use the “no shut” command to enable the interface.
11. Use the “exit” command to back out of interface configuration mode.
12. Type “show int” and verify that the interface is up.
13. Enter configuration mode and add the newly configured interface to VLAN(s) if required.
14. Manually update the routing table to add the interface as the gateway of last resort.
15. Type “exit” to back out of configuration mode.
16. Type “show run” to review the running changes and verify that they are correct.
17. Run the “tracert” command from a workstation on the network and verify connectivity to the Internet through the router after adding the router as the network gateway on the workstation.
18. Type “copy run star” and press Enter to save the changes to NV memory.
19. Log off the serial console.