CCNA Exp1 - Chapter11 - Configuring and Testing Your Network

8/6/2019 CCNA Exp1 - Chapter11 - Configuring and Testing Your Network

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Chapter 11 - Configuring

and Testing Your Network

.


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Overview

Define the role of the Internetwork Operating System(IOS)

Use Cisco CLI commands to perform basic routerand switch configuration and verification

Given a network addressing scheme, select, apply,

Hc vin mng Bch khoa - Website: www.bkacad.com

and verify appropriate addressing parameters to ahost

Use common utilities to verify network connectivitybetween hosts

Use common utilities to establish a relativeperformance baseline for the network


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Role of Internetwork Operating System (IOS)

Identify several classes of devices that have IOSembedded



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Basic routing and switching functions Reliable and secure access to networked resources

Network scalability Using Cisco Command Line Interface (CLI) to configuration



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Access Methods

Access MethodsConsole

Telnet or SSHAUX port



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Access Methods

Use the CLI to access various IOS configurationmodes on a device



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Console

ConsoleLow speed serial connection to directly connect a

computer or terminal to the console port on the router orswitch.

Provides out-of-band access to a router


Examples of console use are:The initial configuration of the network device

Disaster recovery procedures and troubleshooting

where remote access is not possible

Password recovery procedures


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Telnet and SSH

Telnet

Require active networking services on the device.Run on layer 7 in OSI model

Secure Shell (SSH) protocol


Like telnet but more secure accessStronger password

Uses encryption when transporting session data

Use can use ssh client on PC name: Puttyhttp://www.chiark.greenend.org.uk/~sgtatham/putty/download.html


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AUX

Another way to establish a CLI session remotely is via atelephone dialup connection using a modemconnected to the router's AUX port

Can used locally, like console port Console port is also preferred over the auxiliary port for


debugging, and error messages by default.


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Define the purpose of startup config.



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Identify the relationship between IOS and config



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Configuration files

Contain the Cisco IOS software commands used tocustomize the functionality of a Cisco device.

Commands are parsed (translated and executed) by theCisco IOS software when the system is booted (from thestartup-config file) or when commands are entered in theCLI while in confi uration mode.



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Types of Configuration Files

The running configuration fileUsed during the current operation of the device

Changes to the running configuration will immediatelyaffect the operation of the Cisco device

The startup configuration file


se as e ac up con gura on an s oa e w enthe device is started

The startup configuration file or startup-config file isstored in non-volatile RAM (NVRAM)


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Recognize that Cisco IOS is modal and describe theimplications of modes.



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Define the different modes and identify the modeprompts in the CLI



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Identify the basic command structure for IOScommands



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IOS command Conventions



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Identify the types of help and feedback available whileusing IOS and use these features to get help, take

shortcuts and ascertain success



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The Forms of Help

The IOS has several forms of help available:Context-sensitive help

Command Syntax CheckHot Keys and Shortcuts



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Command Syntax Check



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Command Syntax Check



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Hot Keys and Shortcuts

Tab - Completes the remainder of the command orkeyword

Ctrl-R - Redisplays a line Ctrl-Z - Exits configuration mode and returns to the EXEC Down Arrow - Allows user to scroll forward through former


Up Arrow - Allows user to scroll backward through formercommands

Ctrl-Shift-6 - Allows the user to interrupt an IOS process

such as ping or traceroute Ctrl-C - Aborts the current command and exits the

configuration mode


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Examination Commands

Identify the purpose of the show command and severalof its variations



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IOS Configuration mode

Identify several of the configuration modes, theirpurpose and their associated prompt



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IOS Configuration mode

Interface mode - to configure one of the networkinterfaces (Fa0/0, S0/0/0,..)

Line mode - to configure one of the lines (physical orvirtual) (console, AUX, VTY,..)

Router mode - to configure the parameters for one of the



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BASIC CONFIGURATION



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Naming a Device

Explain the reasons for naming devices.



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Naming a Device

Describe two common approaches to establishingnaming conventions



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Naming a Device

To remove the name of a device, use:AtlantaHQ(config)# no hostname

Router(config)#



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Naming a Device

Some guidelines for naming conventions are that namesshould:

Start with a letter

Not contain a space

End with a letter or digit


ave c arac ers o on y e ers, g s, an as es

Be 63 characters or fewer


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Set Password

The passwords introduced here are:Console password - limits device access using the

console connection

Enable password - limits access to the privilegedEXEC mode


- ,

the privileged EXEC modeVTY password - limits device access using Telnet


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Set Password

Describe the role of passwords in limiting access todevice configurations



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Set Password

Describe several ways in which access to a deviceconfiguration can be limited



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Set Banner

Use the CLI to set passwords and add banners to adevice



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Set Banner

Here are some examples of information to include in abanner:

"Use of the device is specifically for authorizedpersonnel."

"Activity may be monitored."

"


.

Command:Router(config)#banner motd # Secured system#


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Manage configuration file

Trace the steps used to examine the startup config,make changes to config, and replace the startup configwith the running config


M fi i fil


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Manage configuration file

Use basic IOS config commands to manage a device.


B k C fi ti TFTP S


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Backup Configuration on TFTP Server

Backup Configuration on TFTP Server1. Enter the copy running-config tftp command.

2. Enter the IP address of the host where the configurationfile will be stored.

3. Enter the name to assign to the configuration file.


. nswer yes o con rm eac c o ce.

R i All C fi ti


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Removing All Configurations

Removing All ConfigurationsRouter# erase startup-config


U t t fil t b k d t fi tti


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Use a text file to backup and restore config settings




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When using HyperTerminal, follow these steps:1. On the Transfer menu, click Capture Text.

2. Choose the location.3. Click Start to begin capturing text.

4. Once capture has been started, execute the show



runn ng-con g or s ow s ar up-con g comman a e

privileged EXEC prompt. Text displayed in the terminalwindow will be placed into the chosen file.

5. View the output to verify that it was not corrupted.

Backup Configurations with Text Capture (TeraTerm)


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1. On the File menu, click Log.2. Choose the location. TeraTerm will begin capturing text.3. Once capture has been started, execute the show

runnin -confi or show startu -confi command at the



privileged EXEC prompt. Text displayed in the terminalwindow will be placed into the chosen file.

4. When the capture is complete, select Close in theTeraTerm: Log window.

5. View the output to verify that it was not corrupted.

Restoring Text Configurations


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Restoring Text Configurations

When using HyperTerminal, the steps are:

1. Locate the file to be copied into the device and open the textdocument.

2. Copy all of the text.


When using TeraTerm, the steps are:

1. On the File menu, click Send file.

2. Locate the file to be copied into the device and click Open.

3. TeraTerm will paste the file into the device.

Configure Router Interfaces


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Configure Router Interfaces

Identify the role of a router in a network.


Configure Router Interface


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Describe the purpose of having multiple interfaces inone router




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Configure Interface Description


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Configure Interface Description

Explain the purpose of assigning interface descriptionsto a router

Hc vin mng Bch khoa - Website: www.bkacad.comDo not affect to router operation

Select, Apply, and Verify Appropriate AddressingParameters to a Host


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Parameters to a Host




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Given a type of host and a master addressing scheme,trace the steps for assigning host parameters to a host





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Trace the steps for using ipconfig/ifconfig to verify hostparameter assignments and for using ping to test

assignments





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Use Common Utilities to Verify Network ConnectivityBetween Hosts


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Between Hosts

Use the ping command in the CLI to determine if theIP protocol is operational on a local host




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Use the ping command to determine if the IP protocolis properly bound to an NIC

Between Hosts




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Use the ping command to determine if a host canactively communicate across the local network

Between Hosts




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Use the ping command to verify that the local host cancommunicate across the internetwork to a given

remote host.




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Identify several conditions that might cause thetest to fail


Use Common Utilities to Establish a RelativePerformance Baseline for the Network


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Use the output of the ping command, saved into logs,and repeated over time, to establish relative network

performance




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Use the output of the traceroute command, saved intologs, and repeated over time, to establish relative

network performance




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Trace the steps for verifying the physicaladdresses of the hosts


How to know about PC connect to SW


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Labs


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Summary


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Commands (EXTRA)


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Set banner (recall)Router(config)#banner motd # message #

Logging SynchronizeRouter(config)#line console 0

Router(config-line)#logging synchronous

Removing auto domain name resolveRouter(config)# no ip domain lookup

Write commandRouter#write - The same as copy run start



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CCNA Exp1 - Chapter11 - Configuring and Testing Your Network

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