Lab Requirements: to be able to perform the
tasks in this lab you need 2 Cisco routers connected to each
other. In this TechLan we assumed two 2501 routers, but pretty
much set of routers will do. This lab does not cover how to
physically connect the routers and the hosts, but rather assumes
you can tell by looking at the diagram. If you need information
on how to setup your lab physically, please refer to our Setting
up the Hardware TechLab.
This lab comes in three versions, the one you are looking at,
a printer-friendly version with the commands, and a printer-friendly
version without the commands that can be used as an assessment.
The printer-friendly versions are for members only. Also note
the the commands in this lab often include the router command
prompt and never use the abbreviated form.
This first CCNA TechLab covers a couple of basic configuration
tasks, such as setting passwords and enabling IP routing using
RIP. You will need a lab setup similar to the network diagram
below:
Before you start, make sure you clear both routers' configuration
using the Router#erase startup-config
command. First we will configure RouterA, after the router reboots,
the following message will be displayed:
%
Please answer 'yes' or 'no'.
Would you like to enter the initial configuration dialog? [yes/no]
Type no and press ENTER. Press ENTER
again when the message Press RETURN to get
started appears. Type enable
at the Router> command prompt to
enter Privileged Exec mode, notice the prompt chances to Router#.
CONFIGURING THE FIRST ROUTER
STEP 1. Change the router's host name to RouterA
Enter configuration mode using the following command:
Router#configure
terminal
Change the host name of the router to RouterA using the following
command :
Router(config)#hostname RouterA
RouterA(config)#
Notice how changing the hostname immediately affects the prompt.
Remember that you are configuring the running configuration.
STEP 2. Disable domain lookups
To prevent the router from interpreting every incorrectly typed
command as a host name and trying to resolve it to an IP address
to setup a telnet connection with it, use the following command:
RouterA(config)#no ip domain-lookup
STEP 3. Configure passwords
First set the enable password to cisco123
using the following command:
RouterA(config)#enable secret cisco123
Next, set the password for telnet connections to cisco456
using the following commands:
RouterA(config)#line vty 0 4
RouterA(config-line)#password cisco456
RouterA(config-line)#login
Although the enable secret command
is used to encrypt the enable password, other passwords stored
in the router's configuration should be encrypted as well. To
do this, use the following command:
RouterA(config)#service password-encryption
STEP 4. Configuring the Ethernet interface
Enter Interface configuration mode for the Ethernet interface,
using the following command:
RouterA(config)#interface Ethernet 0
Give it the description "Connected to LAN" using the
following command:
RouterA(config-if)#description Connected
to LAN1
Configure the IP address (see diagram for correct address) for
the interface using the following command:
RouterA(config-if)#ip address 192.168.11.1
255.255.255.0
Enable the interface using the following command:
RouterA(config-if)#no shutdown
STEP 5. Configure the serial WAN interface
Switch to Interface configuration mode for the first Serial
interface, using the following command:
RouterA(config)#interface Serial 0
Give it the description "Direct connection to RouterB"
using the following command:
RouterA(config-if)#description connected
to RouterB
Configure the IP address (see diagram for correct address) for
the interface using the following command:
RouterA(config-if)#ip address 192.168.22.5
255.255.255.0
Configure the interface to use PPP encapsulation using the following
command:
RouterA(config-if)#encapsulation ppp
Enable the interface using the following command:
RouterA(config-if)#no shutdown
STEP 6. Configure RIP
Use the following command to enable RIP on RouterA:
RouterA(config)#router rip
Configure the router to receive and send only RIP Version 2
packets using the following command:
RouterA(config-router)#version 2
Use the following commands to specify the networks directly
connected to the router:
RouterA(config-router)#network 192.168.11.0
RouterA(config-router)#network 192.168.22.0
STEP 7. Save configuration
To copy the currently running active configuration to NVRAM,
so it will be used the next time you reload the router, use
the following command:
RouterA#copy running-config startup-config
STEP 8. Configuration second router
To configure the other router, RouterB, repeat the steps above.
Use the network diagram to determine the correct addressing
and names. To enable the back-to-back serial connection between
te routers, you need to configure one router as DCE using the
following command in Interface configuration mode for the serial
connection on RouterB:
RouterB(config-if)#clock rate 64000
STEP 9. Verify and test the
configuration
Verify using the ping command Host A to Host B, make sure you
configured both hosts to use the nearest router's interface
as the default gateway in the TCP/IP settings.
On both routers, run the following command in Privileged Exec
mode to determine which device is the DCE:
Router#show controllers s0
On one of the routers, run the following command in Privileged
Exec mode to display the parameters and current state of the
active routing protocol process, and examine the output:
Router#show ip protocols
Use the following command to verify routing table entries on
both routers:
Router#show
ip route
Use the following
command to list a summary of the interface's IP information
and status on both routers, and examine the output:
Router#show
ip interface
Use the same command with the brief
option, and the notice output:
Router#show
ip interface brief
|
Printer-friendly
version including commands
Discuss this Lab 