Configuring Routers

I’ve got to program a router!

What do I have to do

Router>

Router>enable

Router#

Router#config t

Config t is the place to be!

Log on to the router

Name the router!

Router(config)#hostname Lab-A

Step One

Lab-A

Password protect the Privilege Mode

Step Two

Lab-A(config)#enable secret class

 

enable secret 5 $1$emBK$WxqLahy7YOAf0nifub

Results in:PasswordCommands

Configure the Interfaces

Step Three

Lab-A(config)#interface serial0

Lab-A(config-if)#

(Note prompt change)

Address the Interface(S0)

Lab-A(config-if)#ip address 201.100.11.1 255.255.255.0

Ip address Subnet mask

S0=201.100.11.1

Clock ticks MUST be set between routers on the interface with the serial cable DCE end.

Serial0 is where the DCE connects in our

lab.

We use Serial0Lab-A(config-if)#clock rate

56000

Address the next Interface (E0)

Lab-A(config-if)#ip address 192.5.5.1 255.255.255.0

Lab-A(config-if)#interface ethernet0

(This changes to program interface e0)

S0=201.100.11.1

E0=192.5.5.1

Control z

Lab-A#

Lab-A#show running-config

Like people, routers have to talk to one another!

Like people, routers have to talk to one another!

Step Four

Set up routing protocols

Routing Protocols:

RIP RIPv2

IGRP EIGRP

OSPF

Set up the routing protocol

Lab-A(config)#router rip

Lab-A(config-router)# version 2

Lab-A(config-router)#network 192.5.5.0

Lab-A(config-router)#network 201.100.11.0

(Note prompt change)

Note! You have to configure for EACH network (remember network # is the “wire” #) Each network is on a separate line Hit Control z to activate and return to:

Lab-A#

Control Access

Control and secure access from:

CONSOLE

VTY (telnet)

AUX (modem)

Control Access

Step Five

Lab-A(config)#line console 0

Lab-A(config-line)#password cisco

(Note prompt change)

Lab-A(config-line)#login

Continue

Lab-A(config)#line vty 0 4

Lab-A(config-line)#password cisco

Lab-A(config-line)#login

Want to save time and move fast between routers?

Step Six

Create a host file

Lab-A(config)#ip host Lab-A 192.5.5.1 205.7.5.1 201.100.11.1

Lab-A(config)#ip host Lab-B 219.17.100.1 199.6.13.1 201.100.11.2

Lab-A(config)#ip host Lab-C 223.8.151.1 204.204.7.1 199.6.13.2

Lab-A(config)#ip host Lab-D 210.93.105.1 204.204.7.2

Lab-A(config)#control z

Turn on the interfaces:

Lab-A(config)#interface s0 Lab-A(config-if)#no shutdown Lab-A(config-if)#interface e0 Lab-A(config-if)#no shutdown

Step Seven

Check and save your configuration (Step 8)

Router#show run (Check) Router#copy run start (Save)

Let’s Review: Step 1 – name router Hostname xxxxx Step 2 – set “privilege” password and

encode it Enable secret xxxxx Step 3 – configure interfaces Interface sX (or eX)

Step 4 – Set the routing protocols Router rip Step 5 – Set who and where access

comes from Line console (vty) Step 6 – Create a host file Ip host xxx.xxx.xxx yyy.yyy.yyy Step 7 – Turn on interfaces Router(config-if)#no shutdown

Let us review

Step 8:Check and Save your work! Check your config Router#show run Save your configuration from RAM to

NVRAM Router#copy run start

You’re Through!