1.3.2 Packet Tracer – Review of Concepts from Exploration 1 Answers

1.3.2 Packet Tracer – Review of Concepts from Exploration 1 Answers

Topology

Learning Objectives

• Design a logical LAN topology
• Configure the physical topology
• Configure the logical topology
• Verify network connectivity
• Verify passwords

Introduction

In this activity, you will design and configure a small routed network and verify connectivity across multiple network devices. This requires creating and assigning two subnetwork blocks, connecting hosts and network devices, and configuring host computers and one Cisco router for basic network connectivity. Switch1 has a default configuration and does not require additional configuration. You will use common commands to test and document the network. The zero subnet is used.

Task 1: Design a Logical LAN Topology

Step 1. Design an IP addressing scheme.

Given the IP address block of 192.168.30.0 /27, design an IP addressing scheme that satisfies the following requirements:

The 0 subnet is used. No subnet calculators may be used. Create the smallest possible subnets that satisfy the requirements for hosts. Assign the first usable subnet to Subnet A.

Host computers will use the first IP address in the subnet. The network router will use the last IP address in the subnet.

Step 2. Write down the IP address information for each device.

Before proceeding, verify your IP addresses with the instructor.

Task 2: Configure the Physical Topology

Step 1: Determine cabling requirements.

Referring to Figure 1, identify each cable type required and document it in the table.

Figure 1. Cabling the network.

Step 2. Physically connect lab devices.

Cable the network devices as shown in Figure 1. Turn power on to all devices if it is not already on.

Step 3: Inspect the network connections.

After cabling the network devices, verify the connections.

Instructor note: Ensure that the switch is in the default configuration and that Fa0/1 and Fa0/2 are in VLAN1. Ensure that the router is in default configuration, with no passwords or interfaces configured.

Task 3: Configure the Logical Topology

Step 1. Configure the host computers.

Configure the static IP address, subnet mask, and gateway for each host computer. After configuring each host computer, display and verify the host network settings with the ipconfig /all command.

Step 2. Configure Router1.

Enter the following commands on the router:

Task 4: Verify Network Connectivity

Step 1: Use the ping command to verify network connectivity.

You can verify network connectivity using the ping command.

Note: If pings to the host computers fail, verify the existence of a firewall program running on the hosts. If a firewall is running on the host temporarily disable it and retest. To disable a Windows firewall, select Start > Control Panel > Windows Firewall, select OFF, and then OK.

Use the following table to verify connectivity with each network device. Take corrective action to establish connectivity if a test fails.

In addition to the ping command, what other Windows command is useful in displaying network delay and breaks in the path to the destination?
tracert

Task 5: Verify Passwords

Step 1. Telnet to the router from Host2 and verify the Telnet password.

You should be able to telnet to either Fast Ethernet interface of the router.

Step 2. Verify that the enable secret password has been set.

From the Telnet session, enter privilege exec mode and verify that it is password protected.

Step 3: Verify that the console is password protected.

Terminate and then re-establish the console connection from Host1 to the router to verify that the console is password protected.

Depending on the Telnet client that you are using, the session can usually be terminated with Ctrl-].

Task 6: Clean Up

Unless directed otherwise by your instructor, erase the configurations and reload the switches. Disconnect and store the cabling. For PC hosts that are normally connected to other networks (such as the school LAN or to the Internet), reconnect the appropriate cabling and restore the TCP/IP settings.

Router Configuration Commands

Router>en
Router#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#hostname Router1
Router1(config)#enable secret class
Router1(config)#line console 0
Router1(config-line)#password cisco
Router1(config-line)#login
Router1(config-line)#line vty 1 4
Router1(config-line)#password cisco
Router1(config-line)#login
Router1(config-line)#interface fa0/0
Router1(config-if)#ip address 192.168.30.14 255.255.255.240
Router1(config-if)#no shutdown
Router1(config-if)#description connection to host1
Router1(config-if)#interface fa0/1
Router1(config-if)#description connection to switch1
Router1(config-if)#ip address 192.168.30.30 255.255.255.240
Router1(config-if)#no shutdown
Router1(config-if)#^Z
Router1#

Final Router 1 Configuration

Router1#show run
<selective output omitted>
!
hostname Router1
!
!
enable secret class
!
interface FastEthernet0/0
description connection to host1
ip address 192.168.30.14 255.255.255.240
no shutdown
!
interface FastEthernet0/1
description connection to switch1
ip address 192.168.30.30 255.255.255.240
no shutdown
!
line con 0
password cisco
login
line aux 0
line vty 0 4
password cisco
login
!
end

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