1.3.1 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 192.168.7.0 /24, design an IP addressing scheme that satisfies the following requirements:
| Subnet | Number of Hosts |
|---|---|
| Subnet A | 110 |
| Subnet B | 54 |
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. Cable the network.
- Connect Host1 to the Fa0/0 interface on Router1
- Connect a console cable between Host1 and Router1
- Connect the Fa0/1 interface on Switch1 to the Fa0/1 interface on Router1
- Connect Host2 to the Fa0/2 interface on Switch1
Step 2. Inspect the network connections.
Verify the connections visually.
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.
Step 2. Configure Router1.
Connect to Router1 through the Terminal connection on Host1. Enter the following commands on the router:
Remember: Packet Tracer is case sensitive when it grades the description command.
Router>enable Router#config term 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 0 4 Router1(config-line)#password cisco Router1(config-line)#login Router1(config-line)#int fa0/0 Router1(config-if)#ip address address subnet_mask !Supply your answer from Task 1 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 address subnet_mask !Supply your answer from Task 1 Router1(config-if)#no shutdown Router1(config-if)#end Router1#
Task 4: Verify Network Connectivity
Step 1. Use the ping command to verify network connectivity.
You can verify network connectivity using the ping command.
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.
In a command window on Host 2, type:
Packet Tracer PC Command Line 1.0 PC>telnet 192.168.7.190 Trying 192.168.7.190 ... User Access Verification Password:
When you are prompted for the Telnet password, type cisco and press Enter.
Step 2. Verify that the enable secret password has been set.
From the Telnet session, enter privilege exec mode and verify it is password protected:
Router1>enable
Were you prompted for the enable secret password?
Task 6: Reflection
How are Telnet access and console access different? When might it make sense to set different passwords on these two access ports?
Why does the switch between Host2 and the router not require configuration with an IP address to forward packets?
