Wednesday, May 8, 2013

[Erouting] Lab 1.5.1: Cabling a Network and Basic Router Configuration Answer 100%



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  
(Instructor Note: This lab replaces Lab 1.5.2: Basic Router Configuration and should be used if the 
student needs extensive review of prior skills.)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.

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?  
__________ PC1 to S1, S1 to R1, and R2 to PC2_________ 
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? _____green__________ 
What color is the link status light next to the FastEthernet 0/1 interface on S1? _____green__________ 
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? _____green__________ 
What color is the link status light next to the FastEthernet 0/2 interface on S1? _____green__________ 
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? _____green__________ 
What color is the link status light next to the FastEthernet 0/0 interface on R2? _____green__________ 
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. 
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. 
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#

Step 3: Enter an incorrect command and observe the router response. 
Router#comfigure terminal 
                 ^ 
% Invalid input detected at '^' marker. 
 
Router# 
 
Command line errors occur primarily from typing mistakes. If a command keyword is incorrectly typed, the 
user interface uses the caret symbol (^) to identify and isolate the error. The ^ appears at or near the point 
in the command string where an incorrect command, keyword, or argument was entered. 
Step 4: Correct the previous command.  
If a command is entered incorrectly, and the Enter key is pressed, the Up Arrow key on the keyboard 
can be pressed to repeat the last command. Use the Right Arrow and Left Arrow keys to move the 
cursor to the location where the mistake was made. Then make the correction. If something needs to be 
deleted, use the Backspace key. Use the directional keys and the Backspace key to correct the 
command to configure terminal, and then press Enter. 
 
Router#configure terminal 
Enter configuration commands, one per line.  End with CNTL/Z. 
Router(config)# 
Step 5: Return to privileged EXEC mode with the exit command. 
Router(config)#exit 
%SYS-5-CONFIG_I: Configured from console by console 
Router# 
Step 6: Examine the commands that are available for privileged EXEC mode.  
A question mark, ?, can be entered at the prompt to display a list of available commands.  
Router#? 
Exec commands: 
  <1-99>      Session number to resume 
  clear       Reset functions 
  clock       Manage the system clock 
  configure   Enter configuration mode 
  connect     Open a terminal connection 
  copy        Copy from one file to another 
  debug       Debugging functions (see also 'undebug') 
  delete      Delete a file 
  dir         List files on a filesystem 
  disable     Turn off privileged commands 
  disconnect  Disconnect an existing network connection 
  enable      Turn on privileged commands 
  erase       Erase a filesystem 
  exit        Exit from the EXEC 
  logout      Exit from the EXEC 
  no          Disable debugging informations 
  ping        Send echo messages 
  reload      Halt and perform a cold restart 
  resume      Resume an active network connection 
  setup       Run the SETUP command facility 
  show        Show running system information 
 --More-- 
 
Notice the --More-- at the bottom of the command output. The --More-- prompt indicates that there 
are multiple screens of output. When a --More-- prompt appears, press the Spacebar to view the next 
available screen. To display only the next line, press the Enter key. Press any other key to return to the 
prompt. 
Step 7: View output. 
View the rest of the command output by pressing the Spacebar. The remainder of the output will appear 
where the --More-- prompt appeared previously. 
  telnet      Open a telnet connection 
  traceroute  Trace route to destination 
  undebug     Disable debugging functions (see also 'debug') 
  vlan        Configure VLAN parameters 
  write       Write running configuration to memory, network, or terminal 
Step 8: Exit privileged EXEC mode with the exit command.  
Router#exit 
 
The following output should be displayed: 
Router con0 is now available 
 
 
Press RETURN to get started. 
Step 9: Press the Enter key to enter user EXEC mode.  
The Router> prompt should be visible. 
Step 10: Type an abbreviated IOS command. 
IOS commands can be abbreviated, as long as enough characters are typed for the IOS to recognize the 
unique command.  
Enter only the character e at the command prompt and observe the results. 
Router>e 
% Ambiguous command: "e" 
Router> 
 
Enter en at the command prompt and observe the results. 
Router>en 
Router# 
 
The abbreviated command en contains enough characters for the IOS to distinguish the enable 
command from the exit command. 
Step 11: Press the Tab key after an abbreviated command to use auto-complete. 
Typing an abbreviated command, such as conf, followed by the Tab key completes a partial command 
name. This functionality of the IOS is called auto-complete. Type the abbreviated command conf, press 
the Tab key, and observe the results. 
Router#conf 
Router#configure 
This auto-complete feature can be used as long as enough characters are typed for the IOS to recognize 
the unique command. 
Step 12: Enter IOS commands in the correct mode. 
IOS commands must be entered in the correct mode. For example, configuration changes cannot be 
made while in privileged EXEC mode. Attempt to enter the command hostname R1 at the privileged 
EXEC prompt and observe the results. 
Router#hostname R1 
                ^ 
% Invalid input detected at '^' marker. 
 
Router# 
Task 6: Perform Basic Configuration of Router R1. 
Step 1: Establish a HyperTerminal session to router R1. 
Step 2: Enter privileged EXEC mode. 
Router>enable 
Router# 
Step 3: Enter global configuration mode. 
Router#configure terminal 
Enter configuration commands, one per line.  End with CNTL/Z. 
Router(config)# 
Step 4: Configure the router name as R1.  
Enter the command hostname R1 at the prompt.  
Router(config)#hostname R1  
R1(config)# 
Step 5: Disable DNS lookup with the no ip domain-lookup command. 
R1(config)#no ip domain-lookup 
R1(config)# 
 
Why would you want to disable DNS lookup in a lab environment? 
___________________________________________________________________________________ 
___________________________________________________________________________________ 
So that the router does not attempt to look up a DNS entry for a name that is really only a typing error. 
What would happen if you disabled DNS lookup in a production environment? 
___________________________________________________________________________________ 
___________________________________________________________________________________ 
A router would not be able to resolve names, causing potential problems when the router needs an IP 
address to address a packet.
Step 6: Configure an EXEC mode password. 
Configure an EXEC mode password using the enable secret password command. Use class for 
the password.  
 
R1(config)#enable secret class 
R1(config)# 
 
The enable secret command is used to provide an additional layer of security over the enable 
password command. The enable secret command provides better security by storing the enable 
secret password using a non-reversible cryptographic function. The added layer of security encryption 
provides is useful in environments where the password crosses the network or is stored on a TFTP 
server. When both the enable password and enable secret passwords are configured, the  
Step 7: Remove the enable password.  
Because the enable secret is configured, the enable password is no longer necessary. IOS 
commands can be removed from the configuration using the no form of the command. 
 
R1(config)#no enable password 
R1(config)# 
Step 8: Configure a message-of-the-day banner using the banner motd command. 
R1(config)#banner motd & 
Enter TEXT message.  End with the character '&'. 
******************************** 
  !!!AUTHORIZED ACCESS ONLY!!! 
******************************** 
R1(config)# 
 
When does this banner display?  
___________________________________________________________________________________ 
___________________________________________________________________________________ 
When a user logs in to the router either through Telnet or the console connection. 
Why should every router have a message-of-the-day banner?  
___________________________________________________________________________________ 
___________________________________________________________________________________ 
To provide a warning to intentional or unintentional unauthorized access. 
Step 9: Configure the console password on the router.  
Use cisco as the password. When you are finished, exit from line configuration mode. 
R1(config)#line console 0  
R1(config-line)#password cisco  
R1(config-line)#login  
R1(config-line)#exit  
R1(config)# 
Step 10: Configure the password for the virtual terminal lines.  
Use cisco as the password. When you are finished, exit from line configuration mode. 
R1(config)#line vty 0 4  
R1(config-line)#password cisco  
R1(config-line)#login  
R1(config-line)#exit  
R1(config)# 
Step 11: Configure the FastEthernet 0/0 interface with the IP address 192.168.1.1/24. 
R1(config)#interface fastethernet 0/0 
R1(config-if)#ip address 192.168.1.1 255.255.255.0 
R1(config-if)#no shutdown 
 
%LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up 
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed 
state to up 
R1(config-if)# 
Step 12: Use the description command to provide a description for this interface. 
R1(config-if)#description R1 LAN  
R1(config-if)# 
Step 13: Configure the Serial0/0/0 interface with the IP address 192.168.2.1/24.  
Set the clock rate to 64000.  
Note: Because the routers in the labs will not be connected to a live leased line, one of the routers will 
need to provide the clocking for the circuit. This is normally provided to each of the routers by the service 
provider. To provide this clocking signal in the lab, one of the routers will need to act as the DCE on the 
connection. This function is achieved by applying the clock rate 64000 command on the serial 0/0/0 
interface, where the DCE end of the null modem cable has been connected. The purpose of the clock 
rate command is discussed further in Chapter 2, “Static Routes.” 
 
R1(config-if)#interface serial 0/0/0 
R1(config-if)#ip address 192.168.2.1 255.255.255.0 
R1(config-if)#clock rate 64000 
R1(config-if)#no shutdown 
R1(config-if)# 
 
Note: The interface will not be activated until the serial interface on R2 is configured and activated. 
Step 14: Use the description command to provide a description for this interface. 
R1(config-if)#description Link to R2 
R1(config-if)# 
Step 15: Use the end command to return to privileged EXEC mode. 
R1(config-if)#end 
R1# 
Step 16: Save the R1 configuration. 
Save the R1 configuration using the copy running-config startup-config command. 
R1#copy running-config startup-config 
Building configuration... 
[OK] 
R1# 
Task 7: Perform Basic Configuration of Router R2. 
Step 1: For R2, repeat Steps 1 through 10 from Task 6. 
Step 2: Configure the Serial 0/0/0 interface with the IP address 192.168.2.2/24. 
R2(config)#interface serial 0/0/0 
R2(config-if)#ip address 192.168.2.2 255.255.255.0 
R2(config-if)#no shutdown 
 
%LINK-5-CHANGED: Interface Serial0/0/0, changed state to up 
%LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/0/0, changed state 
to up 
R2(config-if)# 
Step 3: Use the description command to provide a description for this interface. 
R1(config-if)#description Link to R1 
R1(config-if)# 
Step 4: Configure the FastEthernet 0/0 interface with the IP address 192.168.3.1/24. 
R2(config-if)#interface fastethernet 0/0 
R2(config-if)#ip address 192.168.3.1 255.255.255.0 
R2(config-if)#no shutdown 
 
%LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up 
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed 
state to up 
R2(config-if)# 
Step 5: Use the description command to provide a description for this interface. 
R1(config-if)#description R2 LAN 
R1(config-if)# 
Step 6: Use the end command to return to privileged EXEC mode. 
R2(config-if)#end 
R2# 
Step 7: Save the R2 configuration. 
Save the R2 configuration using the copy running-config startup-config command, 
R2#copy running-config startup-config 
Building configuration... 
[OK] 
R2# 
Task 8: Configure IP Addressing on the Host PCs. 
Step 1: Configure the host PC1. 
Configure the host PC1 that is attached to R1 with an IP address of 192.168.1.10/24 and a default 
gateway of 192.168.1.1. 
Step 2: Configure the host PC2. 
Configure the host PC2 that is attached to R2 with an IP address of 192.168.3.10/24 and a default 
gateway of 192.168.3.1. 
Task 9: Examine Router show Commands. 
There are many show commands that can be used to examine the operation of the router. In both 
privileged EXEC and user EXEC modes, the command show ? provides a list of available show 
commands. The list is considerably longer in privileged EXEC mode than it is in user EXEC mode. 
Step 1: Examine the show running-config command. 
The show running-config command is used to display the contents of the currently running 
configuration file. From privileged EXEC mode on the R1 router, examine the output of the show 
running-config command. If the –-More-- prompt appears, press the Spacebar to view the 
remainder of the command output. 
R1#show running-config 
version 12.3 
hostname R1 
enable secret 5 $1$AFDd$0HCi0iYHkEWR4cegQdTQu/ 
no ip domain-lookup 
interface FastEthernet0/0 
 description R1 LAN 
 mac-address 0007.eca7.1511 
 ip address 192.168.1.1 255.255.255.0 
 duplex auto 
 speed auto 
interface FastEthernet0/1 
 mac-address 0001.42dd.a220 
 no ip address 
 duplex auto 
 speed auto 
 shutdown 
interface Serial0/0 
 description Link to R2 
 ip address 192.168.2.1 255.255.255.0 
 clock rate 64000 
interface Serial0/1 
 no ip address 
 shutdown 
interface Vlan1 
 no ip address 
 shutdown 
ip classless 
line con 0 
 password cisco 
line vty 0 4 
 password cisco 
 login 
end 
Step 2: Examine The show startup-config command. 
The show startup-config command displays the startup configuration file contained in NVRAM. 
From privileged EXEC mode on the R1 router, examine the output of the show startup-config 
command. If the –-More-- prompt appears, press the Spacebar to view the remainder of the command 
output. 
R1#show startup-config  
Using 583 bytes 
version 12.3 
hostname R1 
no ip domain-lookup 
interface FastEthernet0/0 
 description R1 LAN 
 mac-address 0007.eca7.1511 
 ip address 192.168.1.1 255.255.255.0 
 duplex auto 
 speed auto 
interface FastEthernet0/1 
 mac-address 0001.42dd.a220 
 no ip address 
 duplex auto 
 speed auto 
 shutdown 
interface Serial0/0 
 description Link to R2 
 ip address 192.168.2.1 255.255.255.0 
 clock rate 64000 
interface Serial0/1 
 no ip address 
 shutdown 
interface Vlan1 
 no ip address 
 shutdown 
ip classless 
line con 0 
 password cisco 
line vty 0 4 
 password cisco 
 login 
end 
Step 3: Examine the show interfaces command. 
The show interfaces command displays statistics for all interfaces configured on the router. A specific 
interface can be added to the end of this command to display the statistics for only that interface. From 
privileged EXEC mode on the R1 router, examine the output of the show interfaces 
fastEthernet0/0 command. If the –-More-- prompt appears, press the Spacebar to view the 
remainder of the command output. 
R1# show interfaces fastEthernet 0/0 
FastEthernet0/0 is up, line protocol is up (connected) 
  Hardware is Lance, address is 0007.eca7.1511 (bia 0002.1625.1bea) 
  Description: R1 LAN 
  Internet address is 192.168.1.1/24 
  MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec, rely 255/255, load 1/255 
  Encapsulation ARPA, loopback not set 
  ARP type: ARPA, ARP Timeout 04:00:00,  
  Last input 00:00:08, output 00:00:05, output hang never 
  Last clearing of "show interface" counters never 
  Queueing strategy: fifo 
  Output queue :0/40 (size/max) 
  5 minute input rate 0 bits/sec, 0 packets/sec 
  5 minute output rate 0 bits/sec, 0 packets/sec 
     0 packets input, 0 bytes, 0 no buffer 
     Received 0 broadcasts, 0 runts, 0 giants, 0 throttles 
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort 
     0 input packets with dribble condition detected 
     0 packets output, 0 bytes, 0 underruns 
     0 output errors, 0 collisions, 1 interface resets 
     0 babbles, 0 late collision, 0 deferred 
     0 lost carrier, 0 no carrier 
     0 output buffer failures, 0 output buffers swapped out 
R1# 
Step 4: Examine the show version command. 
The show version command displays information about the currently loaded software version along 
with hardware and device information. From privileged EXEC mode on the R1 router, examine the output 
of the show version command. If the –-More-- prompt appears, press the Spacebar to view the 
remainder of the command output. 
R1#show version  
Cisco IOS Software, 1841 Software (C1841-IPBASE-M), Version 12.3(14)T7, 
RELEASE SOFTWARE (fc2) 
Technical Support: http://www.cisco.com/techsupport 
Copyright (c) 1986-2006 by Cisco Systems, Inc. 
Compiled Mon 15-May-06 14:54 by pt_team 
 
ROM: System Bootstrap, Version 12.3(8r)T8, RELEASE SOFTWARE (fc1) 
 
System returned to ROM by power-on 
System image file is "flash:c1841-ipbase-mz.123-14.T7.bin" 
 
 
This product contains cryptographic features and is subject to United 
States and local country laws governing import, export, transfer and 
use. Delivery of Cisco cryptographic products does not imply 
third-party authority to import, export, distribute or use encryption. 
Importers, exporters, distributors and users are responsible for 
compliance with U.S. and local country laws. By using this product you 
agree to comply with applicable laws and regulations. If you are unable 
to comply with U.S. and local laws, return this product immediately. 
 
A summary of U.S. laws governing Cisco cryptographic products may be found 
at: 
http://www.cisco.com/wwl/export/crypto/tool/stqrg.html 
 
If you require further assistance please contact us by sending email to 
export@cisco.com. 
 
Cisco 1841 (revision 5.0) with 114688K/16384K bytes of memory. 
Processor board ID FTX0947Z18E 
M860 processor: part number 0, mask 49 
2 FastEthernet/IEEE 802.3 interface(s) 
2 Low-speed serial(sync/async) network interface(s) 
191K bytes of NVRAM. 
31360K bytes of ATA CompactFlash (Read/Write) 
 
Configuration register is 0x2102 
 
R1# 
Step 5: Examine the show ip interface brief command. 
The show ip interface brief command displays a summary of the usability status information for 
each interface. From privileged EXEC mode on the R1 router, examine the output of the show ip 
interface brief command. If the –-More-- prompt appears, press the Spacebar to view the 
remainder of the command output. 
R1#show ip interface brief 
Interface            IP-Address    OK? Method Status                Protocol 
  
FastEthernet0/0      192.168.1.1   YES manual up                    up 
  
FastEthernet0/1      unassigned    YES manual administratively down down 
  
Serial0/0/0            192.168.2.1   YES manual up                    up 
  
Serial0/0/1            unassigned    YES manual administratively down down 
  
Vlan1                unassigned    YES manual administratively down down 
R1# 
Task 10: Using ping. 
The ping command is a useful tool for troubleshooting Layers 1 though 3 of the OSI model and 
diagnosing basic network connectivity. This operation can be performed at either the user or privileged 
EXEC modes. Using ping sends an Internet Control Message Protocol (ICMP) packet to the specified 
device and then waits for a reply. Pings can be sent from a router or a host PC. 
Step 1: Use the ping command to test connectivity between the R1 router and PC1. 
R1#ping 192.168.1.10 
 
Type escape sequence to abort. 
Sending 5, 100-byte ICMP Echos to 192.168.1.10, timeout is 2 seconds: 
.!!!! 
Success rate is 80 percent (4/5), round-trip min/avg/max = 72/79/91 ms 
 
Each exclamation point (!) indicates a successful echo. Each period (.) on the display indicates that the 
application on the router timed out while it waited for a packet echo from a target. The first ping packet 
failed because the router did not have an ARP table entry for the destination address of the IP packet. 
Because there is no ARP table entry, the packet is dropped. The router then sends an ARP request, 
receives a response, and adds the MAC address to the ARP table. When the next ping packet arrives, it 
will be forwarded and be successful. 
Step 2: Repeat the ping from R1 to PC1. 
R1#ping 192.168.1.10 
 
Type escape sequence to abort. 
Sending 5, 100-byte ICMP Echos to 192.168.1.10, timeout is 2 seconds: 
!!!!! 
Success rate is 100 percent (5/5), round-trip min/avg/max = 72/83/93 ms 
 
R1# 
 
All of the pings are successful this time because the router has an entry for the destination IP address in 
the ARP table. 
Step 3: Send an extended ping from R1 to PC1.  
To accomplish this, type ping at the privileged EXEC prompt and press Enter. Fill out the rest of the 
prompts as shown:  
R1#ping 
Protocol [ip]:  
Target IP address: 192.168.1.10 
Repeat count [5]: 10 
Datagram size [100]:  
Timeout in seconds [2]:  
Extended commands [n]:  
Sweep range of sizes [n]:  
Type escape sequence to abort. 
Sending 10, 100-byte ICMP Echos to 192.168.1.10, timeout is 2 seconds: 
!!!!!!!!!! 
Success rate is 100 percent (10/10), round-trip min/avg/max = 53/77/94 ms 
 
R1# 
Step 4: Send a ping from PC1 to R1.  
From Windows go to Start > Programs > Accessories > Command Prompt. In the Command Prompt 
window that opens, ping R1 by issuing the following command:  
 
C:\> ping 192.168.1.1 
 
The ping should respond with successful results. 
Step 5: Send an extended ping from PC1 to R1.  
To accomplish this, enter the following command at the Windows command prompt: 
 
C:\>ping 192.168.1.1 –n 10 
 
There should be 10 successful responses from the command. 
Task 11: Using traceroute. 
The traceroute command is an excellent utility for troubleshooting the path that a packet takes through 
an internetwork of routers. It can help to isolate problem links and routers along the way. The 
traceroute command uses ICMP packets and the error message generated by routers when the 
packet exceeds its Time-To-Live (TTL). This operation can be performed at either the user or privileged 
EXEC modes. The Windows version of this command is tracert. 
Step 1: Use the traceroute command at the R1 privileged EXEC prompt to discover the path that 
a packet will take from the R1 router to PC1. 
R1#traceroute 192.168.1.10 
Type escape sequence to abort. 
Tracing the route to 192.168.1.10 
 
  1   192.168.1.10    103 msec  81 msec   70 msec    
R1# 
Step 2: Use the tracert command at the Windows command prompt to discover the path that a 
packet will take from the R1 router to PC1. 
C:\>tracert 192.168.1.1 
 
Tracing route to 192.168.1.1 over a maximum of 30 hops: 
 
  1   71 ms 70 ms 73 ms 192.168.1.1  
 
Trace complete. 
 
C:\> 
Task 12: Create a start.txt File. 
Router configurations can be captured to a text (.txt) file and saved for later use. The configuration can be 
copied back to the router so that the commands do not have to be entered one at a time. 
 
Step 1: View the running configuration of the router using the show running-config command. 
R1#show running-config  
version 12.3 
hostname R1 
enable secret 5 $1$J.hq$Ds72Qz86tvpcuW2X3FqBS. 
no ip domain-lookup 
interface FastEthernet0/0 
 description R1 LAN 
 mac-address 0007.eca7.1511 
 ip address 192.168.1.1 255.255.255.0 
 duplex auto 
 speed auto 
interface FastEthernet0/1 
 mac-address 0001.42dd.a220 
 no ip address 
 duplex auto 
 speed auto 
 shutdown 
interface Serial0/0 
 description Link to R2 
 ip address 192.168.2.1 255.255.255.0 
 clock rate 64000 
interface Serial0/1 
 no ip address 
 shutdown 
interface Vlan1 
 no ip address 
 shutdown 
ip classless 
line con 0 
 password cisco 
line vty 0 4 
 password cisco 
 login 
end 
 
R1# 
Step 2: Copy the command output. 
Select the command output. From the HyperTerminal Edit menu, choose the copy command. 
 
Step 3: Paste output in Notepad. 
Open Notepad. Notepad is typically found on the Start menu under Programs > Accessories. From the 
Notepad Edit menu, click Paste. 
Step 4: Edit commands. 
Some commands will have to be edited or added before the startup script can be applied to a router. 
Some of these changes are: 
• Adding a no shutdown command to FastEthernet and serial interfaces that are being used. 
• Replacing the encrypted text in the enable secret command with the appropriate password. 
• Removing the mac-address command from the interfaces. 
• Removing the ip classless command. 
• Removing unused interfaces. 
 
Edit the text in the Notepad file as shown below:  
 
hostname R1 
enable secret class 
no ip domain-lookup 
interface FastEthernet0/0 
 description R1 LAN 
  ip address 192.168.1.1 255.255.255.0 
 no shutdown 
 duplex auto 
 speed auto 
interface Serial0/0 
 description Link to R2 
 ip address 192.168.2.1 255.255.255.0 
 clock rate 64000 
 no shutdown 
line con 0 
 password cisco 
line vty 0 4 
 password cisco 
 login 
end 
Step 5: Save the open file in Notepad to start.txt. 
Task 13: Load the start.txt File onto the R1 Router. 
Step 1: Erase the current startup configuration of R1.  
Confirm the objective when prompted, and answer no if asked to save changes. The result should look 
something like this: 
R1#erase startup-config 
Erasing the nvram filesystem will remove all files! Continue? [confirm] 
[OK] 
Erase of nvram: complete 
Router# 
 
Step 2: 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 3: Enter global configuration mode. 
Router#configure terminal  
Enter configuration commands, one per line.  End with CNTL/Z. 
Router(config)# 
Step 4: Copy the commands. 
In the start.txt file that was created in Notepad, select all the lines, and then choose Edit > Copy. 
Step 5: From the HyperTerminal Edit menu, choose Paste to Host.  
Step 6: Verify the running configuration. 
After all of the pasted commands have been applied, use the show running-config command to 
verify that the running configuration appears as expected. 
Step 7: Save the running configuration, 
Save the running configuration to NVRAM using the copy running-config startup-config 
command. 
R1#copy running-config startup-config  
Building configuration... 
[OK] 
R1# 
Appendix 1: Installing and Configuring Tera Term for use on Windows XP 
Tera Term is a free terminal emulation program for Windows. It can be used in the lab environment in 
place of Windows HyperTerminal. Tera Term can be obtained at the following URL: 
http://hp.vector.co.jp/authors/VA002416/teraterm.html 
Download the “ttermp23.zip”, unzip it, and install Tera Term. 
Step 1: Open the Tera Terminal program. 
Step 2: Assign Serial port. 
To use Terra Term to connect to the router console, open the New connection dialog box and select the 
Serial port. 
Step 3: Set Serial port parameters. 
Set appropriate parameters for Port in the Serial section of the Tera Term:New Connection dialog box. 
Normally, your connection is through COM1. If you are unsure what port to use, ask your instructor for 
assistance. 
 
Step 4: Configure settings. 
Terra Term has some settings that can be changed to make it more convenient to use. From the Setup > 
Terminal menu, check the Term size = win size checkbox. This setting allows command output to 
remain visible when the Terra Term window is resized. 

Step 5: Change scroll buffer number. 
From the Setup > Window menu, change the scroll buffer number to a number higher than 100. This 
setting allows you to scroll up and view previous commands and outputs. If there are only 100 lines 
available in the buffer, only the last 100 lines of output are visible. In the example below, the scroll buffer 
has been changed to 1000 lines. 

Appendix 2: Configuring Tera Term as the Default Telnet Client in Windows XP 
Be default, Windows may be set to use HyperTerminal as the Telnet client. Windows may also be set to 
use the DOS version of Telnet. In the NetLab environment, you can change the Telnet client to Local 
Telnet Client, which means that NetLab will open the current Windows default Telnet client. This may be 
set to HyperTerminal or to the DOS-like version of Telnet embedded in the Windows operating system.  
Complete the following steps to change your default Telnet client to Tera Term (or any other Telnet 
client): 
Step 1: Go to Folder Options. 
Double-click My Computer, and then choose Tools > Folder Options. 
Step 2: Go to (NONE) URL:Telnet Protocol. 
Click the File Types tab and scroll down in the list of Registered file types: until you find the (NONE) 
URL:Telnet Protocol entry. Select it and then click the Advanced button. 
 
Step 3: Edit the open action. 
In the Edit File Type dialog box, click Edit to edit the open action. 
 
Step 4: Change the application. 
In the Editing action for type: URL: Telnet Protocol dialog box, the Application used to perform 
action is currently set to HyperTerminal. Click Browse to change the application. 
 
Step 5: Open ttermpro.exe. 
Browse to the Tera Term installation folder. Click the ttermpro.exe file to specify this program for the open 
action, and then click Open. 
 
Step 6: Confirm ttermpro.exe and close. 
Click OK twice and then Close to close the Folder Options dialog box. The Windows default Telnet 
client is now set to Tera Term.  CCNA Exploration 
Routing Protocols and Concepts:  
Introduction to Routing and Packet Forwarding Lab 1.5.1: Cabling a Network and Basic Router Configuration 

Appendix 3: Accessing and Configuring HyperTerminal 
In most versions of Windows, HyperTerminal can be found by navigating to Start > Programs > 
Accessories > Communications > HyperTerminal. 
Step 1: Create a new connection. 
Open HyperTerminal to create a new connection to the router. Enter an appropriate description in the 
Connection Description dialog box and then click OK.  
 
Step 2: Assign COM1 port. 
On the Connect To dialog box, make sure the correct serial port is selected in the Connect using field. 
Some PCs have more than one COM port. Click OK.   
 
Step 3: Set COM1 properties. 
In the COM1 Properties dialog box under Port Setting, clicking Restore Defaults normally sets the 
correct properties. If not, set the properties to the values show in the following graphic, and then click OK.

Step 4: Verify connection. 
You should now have a console connection to the router. Press Enter to get a router prompt.

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