en_ERouting_SLM_v401.pdf

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to print and copy this document for non-commercial distribution and exclusive

use by instructors in the CCNA Exploration: Routing Protocols and Concepts

course as part of an official Cisco Networking Academy Program.

Lab 1.5.1: Cabling a Network and Basic Router Configuration

Topology Diagram

Addressing Table

Device

Interface

IP Address

Subnet Mask

Default Gateway

Fa0/0

192.168.1.1

255.255.255.0

N/A

S0/0/0

192.168.2.1

255.255.255.0

N/A

Fa0/0

192.168.3.1

255.255.255.0

N/A

S0/0/0

192.168.2.2

255.255.255.0

N/A

PC1

N/A

192.168.1.10

255.255.255.0

192.168.1.1

PC2

N/A

192.168.3.10

255.255.255.0

192.168.3.1

Learning Objectives

Upon completion of this lab, you will be able to:

• Cable devices and establish console connections.

• Erase and reload the routers.

• Perform basic IOS command line interface operations.

• Perform basic router configuration.

• Verify and test configurations using show commands, ping and traceroute.

• Create a startup configuration file.

• Reload a startup configuration file.

• Install a terminal emulation program.

Scenario

In this lab activity, you will review previously learned skills including cabling devices, establishing a

console connection, and basic IOS command line interface operation and configuration commands. You

will also learn to save configuration files and capture your configurations to a text file. The skills presented

in this lab are essential to completing the rest of the labs in this course. However, you may substitute the

shorter version, Lab 1.5.2: Basic Router Configuration , if your instructor determines that you are

proficient in the essential skills reviewed in this lab.

CCNA Exploration

Routing Protocols and Concepts:

Introduction to Routing and Packet Forwarding

Lab 1.5.1: Cabling a Network and Basic Router Configuration

Task 1: Cable the Ethernet Links of the Network.

Cable the Ethernet links for a network that is similar to the one in the Topology Diagram. The output used

in this lab is from Cisco 1841 routers. But you can use any current router in your lab as long as it has the

required interfaces as shown in the topology. A simple way to identify the available interfaces on a router

is by entering the show ip interface brief command.

Which of the devices in the Topology Diagram require an Ethernet cable between them?

____________________________________________________

Step 1: Connect the R1 Router to the S1 Switch.

Use a straight-through Ethernet cable to connect the FastEthernet 0/0 interface of the R1 router to the

FastEthernet 0/1 interface on the R1 switch.

What color is the link status light next to the FastEthernet 0/0 interface on R1? _______________

What color is the link status light next to the FastEthernet 0/1 interface on S1? _______________

Step 2: Connect PC1 to the S1 Switch.

Use a straight-through Ethernet cable to connect the network interface card (NIC) of PC1 to the

FastEthernet 0/2 Interface of the S1 switch.

What color is the link status light next to the NIC interface on PC1? _______________

What color is the link status light next to the FastEthernet 0/2 interface on S1? _______________

If the link status lights are not green, wait a few moments for the link between the two devices to become

established. If the lights do not turn green after a few moments, check that you are using a straight-

through Ethernet cable and that the power is on for the S1 switch and PC1.

Step 3: Connect PC2 to the R2 Router.

Use a crossover Ethernet cable to connect the FastEthernet 0/0 interface of the R2 router to the NIC of

PC2. Because there is no switch between PC2 and the R2 router, a crossover cable is required for a

direct link between the PC and the router.

What color is the link status light next to the NIC interface on PC2? _______________

What color is the link status light next to the FastEthernet 0/0 interface on R2? _______________

Task 2: Cable the Serial Link between the R1 and R2 Routers.

In a real-world WAN connection, the customer premises equipment (CPE), which is often a router, is the

data terminal equipment (DTE). This equipment is connected to the service provider through a data

circuit-terminating equipment (DCE) device, which is commonly a modem or channel service unit (CSU)/

data service unit (DSU). This device is used to convert the data from the DTE into a form acceptable to

the WAN service provider.

Unlike the cables in the academy lab setup, the serial cables in the real world are not connected back to

back. In a real-world situation, one router might be in New York, while another router might be in Sydney,

Australia. An administrator located in Sydney would have to connect to the router in New York through

the WAN cloud in order to troubleshoot the New York router.

In the academy labs, devices that make up the WAN cloud are simulated by the connection between the

back-to-back DTE-DCE cables. The connection from one router serial interface to another router serial

interface simulates the whole circuit cloud.

CCNA Exploration

Routing Protocols and Concepts:

Introduction to Routing and Packet Forwarding

Lab 1.5.1: Cabling a Network and Basic Router Configuration

Step 1: Create a null serial cable to connect the R1 router to the R2 router.

In the academy labs, the WAN connection between routers uses one DCE cable and one DTE cable. The

DCE-DTE connection between routers is referred to as a null serial cable. The labs will use one V.35

DCE cable and one V.35 DTE cable to simulate the WAN connection. The V.35 DCE connector is usually

a female V.35 (34-pin) connector. The DTE cable has a male V.35 connector. The cables are also labeled

as DCE or DTE on the router end of the cable.

The DTE and DCE V.35 cables must be joined together. Holding one of the V.35 ends in each hand,

examine the pins and sockets as well as the threaded connectors. Note that there is only one proper way

for the cables to fit together. Align the pins on the male cable with the sockets on the female cable and

gently couple them. Very little effort should be required to accomplish this. When they are joined, turn the

thumbscrews clockwise and secure the connectors.

Step 2: Connect the DCE end of the null serial cable to the Serial 0/0/0 interface of the R1 router,

and the DTE end of the null serial cable to the Serial 0/0/0 interface of the R2 router.

Review the information provided below before making these connections.

Before making the connection to one of the routers, examine the connector on the router and the cable.

Note that the connectors are tapered to help prevent improper connection. Holding the connector in one

hand, orient the cable and router connecters so that the tapers match. Now push the cable connector

partially into the router connector. It probably will not go in all the way because the threaded connectors

need to be tightened in order for the cable to be inserted completely. While holding the cable in one hand

and gently pushing the cable toward the router, turn one of the thumb screws clockwise, 3 or 4 rounds, to

start the screws. Now turn the other thumbscrew clockwise, 3 or 4 rounds, to get it started. At this point

the cable should be attached sufficiently to free both hands to advance each thumbscrew at the same

rate until the cable is fully inserted. Do not over-tighten these connectors.

Task 3: Establish a Console connection to the R1 Router.

The console port is a management port used to provide out-of-band access to a router. It is used to set

up the initial configuration of a router and to monitor it.

A rollover cable and an RJ-45 to DB-9 adapter are used to connect a PC to the console port. As you

know from your previous studies, terminal emulation software is used to configure the router over the

console connection. The Cisco Networking Academy Program recommends using Tera Term. However,

you can also use HyperTerminal, which is part of the Windows operating system.

At the end of this lab, the following three appendices are available for your reference concerning these

two terminal emulation programs:

• Appendix 1: Installing and Configuring Tera Term for use on Windows XP

• Appendix 2: Configuring Tera Term as the Default Telnet Client in Windows XP

• Appendix 3: Accessing and Configuring HyperTerminal

Step 1: Examine the router and locate the RJ-45 connector labeled Console.

Step 2: Examine PC1 and locate a 9-pin male connector serial port.

It may—or may not—be labeled as COM1 or COM2.

Step 3: Locate the console cable.

Some console cables have an RJ-45 to DB-9 adapter built into one end. Others do not. Locate either a

console cable with a built-in adapter or a console cable with a separate RJ-45 to DB-9 adapter attached

to one end.

CCNA Exploration

Routing Protocols and Concepts:

Introduction to Routing and Packet Forwarding

Lab 1.5.1: Cabling a Network and Basic Router Configuration

Step 4: Connect the console cable to the router and PC.

First, connect the console cable to the router console port, an RJ-45 connector. Next, connect the DB-9

end of the console cable to the serial port of PC1.

Step 5: Test router connection.

1. Open your terminal emulation software (HyperTerminal, Tera Term, or other software specified by

your instructor).

2. Configure the software parameters specific to your applications (see appendices for help).

3. Once the terminal window is open, press the Enter key. There should be a response from the

router. If there is, then the connection has been successfully completed. If there is no connection,

troubleshoot as necessary. For example, verify that the router has power. Check the connection

to the serial port on the PC and the console port on the router.

Task 4: Erase and Reload the Routers.

Step 1: Using the HyperTerminal session established in Task 3, enter privileged EXEC mode on

R1.

Router> enable

Router#

Step 2: Erase the configuration.

To clear the configuration, issue the erase startup-config command. Confirm the objective when

prompted, and answer no if asked to save changes. The result should look something like this:

Router# erase startup-config

Erasing the nvram filesystem will remove all files! Continue? [confirm]

[OK]

Erase of nvram: complete

Router#

Step 3: Reload the configuration.

When the prompt returns, issue the reload command. Confirm the objective when prompted. After the

router finishes the boot process, choose not to use the AutoInstall facility, as shown:

Would you like to enter the initial configuration dialog? [yes/no]: no

Would you like to terminate autoinstall? [yes]:

Press Enter to accept default.

Press RETURN to get started!

Step 4: Establish a HyperTerminal Session to R2.

Repeat Steps 1 through 3 to remove any startup configuration file that may be present.

Task 5: Understand Command Line Basics.

Step 1: Establish a HyperTerminal session to router R1.

Step 2: Enter privileged EXEC mode.

Router> enable

Router#

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