Long time ago before I attend my CCNA in Penang, I have no idea how those Network Administrator/IT Engineer configure Cisco router and switch. Just know they have good knowledge on the cisco coding.

While configure a cisco router, there are few kind of mode can be use:

1. User Mode
2. Priviledge Mode
3. Config Mode
4. Interface Mode
5. line mode

Cisco Router Basic Configuration Need:

1. Password + Secret
2. Hostname
3. Interface (IP and subnet mask, no shut, and clock rate)
4. Line configuration

Below are some coding on Basic configuration for cisco router:

Enter Privilege Mode

Router > enable

Enter Configuration Mode

Router# configuration terminal

Password need when enter into Privilege Mode next time

Router(config)# enable password p@ssw0rd

Router(config)#enable secret s3cr3t

Configure Hostname / Router Name

Router(config)#hostname myrouter1

[Set the hostname to myrouter1]

Configure Ethernet Port Command

myrouter1(config)# inte f0/0

[Enter Ethernet Interface Mode ( f0/0 for interface1, f0/1 for interface 2)]

myrouter1(config-if)# ip add 192.168.0.1 255.255.255.0

[Set IP address and subnet mask]

myrouter1(config-if)#no shut

[Active the port]

Configure Serial Port Command

myrouter1(config-if)#inte s 0/0/0

[Enter Serial Interface Mode]

myrouter1(config-if)#ip add 192.168.20.1 255.255.255.0

[Set IP address and subnet mask]

myrouter1(config-if)#no shut

[Active the port]

Set the Router Bandwidth – Set the bandwidth to 1G, Clock Rate only apply at Master Router

myrouter1(config-if)#clock rate 1000000

[Set the bandwidth to 1Gig]

myrouter1(config-if)#exit

Secure Console

myrouter1(config)#line con 0

myrouter1(config-line)#password c0ns0l3

myrouter1(config-line)#login

myrouter1(config-line)#exit

Secure Aux line – Auxiliary Password, use to connect a modem to a router for remote console connection, Aux only available for old router, new router does not apply

myrouter1(config)#line aux0

myrouter1(config-line)#password auXo

myrouter1(config-line)#login

myrouter1(config-line)#exit

Secure VTY line – Virtual Terminal Password, Use to secure your login from telnet or ssh

myrouter1(config)#line vty 0 4

myrouter1(config-line)#password v1rtu@1

myrouter1(config-line)#login

myrouter1(config-line)#exit

myrouter1(config)#exit

Save setting

myrouter1#wr me

or

myrouter1#copy run start

The above code are just a very basic configuration for cisco router, there are more advance configuration need for routing purpose such as static routes, default routes and dynamic routes. Within dynamic routes, there are also RIP Routes (Routing Information Protocol), IGRP Routes (Interior Gateway Routing Protocol) OSPF Routes (Open Shortest Path First) and EIGRP Routes (Enhanced Interior Gateway Routing Protocol)

All this routing require different command for different protocol, I am still studying on all this cisco command, and soon, will post the easy explanation here when I have better understanding on cisco router routing configuration. To master the cisco router basic configuration, have to do more practice on Packet Tracer, Cisco Simulation Software. To learn how to use packet tracer , you also can visit the Packet Tracer Video Tutorial that I post quite some time ago, another Packet Tracer Video Tutorial Part 3 is coming up soon