Table of Contents for
Packet Tracer Network Simulator

Version ebook / Retour

Cover image for bash Cookbook, 2nd Edition Packet Tracer Network Simulator by Jesin A Published by Packt Publishing, 2014
  1. Cover
  2. Table of Contents
  3. Packet Tracer Network Simulator
  4. Packet Tracer Network Simulator
  5. Credits
  6. About the Author
  7. About the Reviewers
  8. www.PacktPub.com
  9. Preface
  10. Who this book is for
  11. Conventions
  12. Reader feedback
  13. Customer support
  14. 1. Getting Started with Packet Tracer
  15. Installing Packet Tracer
  16. Interface overview
  17. Creating a simple topology
  18. Summary
  19. 2. Network Devices
  20. Customizing devices with modules
  21. Emulating WAN
  22. Accessing the CLI
  23. Summary
  24. 3. Generic IP End Devices
  25. Servers
  26. Other end devices
  27. Configuring end devices
  28. Summary
  29. 4. Creating a Network Topology
  30. Testing connectivity with PDUs
  31. Using the simulation mode
  32. Clustering a topology
  33. Summary
  34. 5. Navigating and Modifying the Physical Workspace
  35. Moving devices physically
  36. Managing cables and distances
  37. Customizing icons and backgrounds
  38. Summary
  39. 6. Configuring Routing with the CLI
  40. Dynamic routing protocols
  41. The Routing table
  42. Load sharing
  43. Summary
  44. 7. Border Gateway Protocol (BGP)
  45. BGP versus dynamic routing protocols
  46. Configuring BGP in Packet Tracer
  47. Summary
  48. 8. IPv6 on Packet Tracer
  49. IPv6 static and dynamic routing
  50. Using both IPv4 and IPv6
  51. Summary
  52. 9. Setting Up a Wireless Network
  53. Wireless networks and physical workspaces
  54. Summary
  55. 10. Configuring VLANs and Trunks
  56. InterVLAN routing with routers and layer 3 switches
  57. Switch-to-switch trunk links
  58. Analyzing broadcasts in the simulation mode
  59. Summary
  60. 11. Creating Packet Tracer Assessments
  61. The initial network
  62. The answer network
  63. Testing the activity
  64. Summary
  65. Index

Wireless networks and physical workspaces

In the real world, each wireless device has a range upto which it can provide wireless connectivity. Packet Tracer simulates this range with the use of physical workspaces. We can see what happens when a laptop with a wireless interface is moved out of wireless range. For this exercise, we'll use the following topology:

Wireless networks and physical workspaces

This topology has a wireless access point (Access Point0) connected to a switch (Switch0), which is connected to a PC (PC0). We also have a laptop with a wireless interface.

Configure IP addresses on both the PC and laptop; we'll use IP addresses 10.0.0.1 and 10.0.0.2 respectively. Now ping these devices from one another to test connectivity. Moving to the physical workspace, navigate to Home City | Corporate Office. You'll find a round mesh that represents the range of the wireless access point. We are now going to move the laptop to the new office building, out of the wiring closet, and place it in the corporate office, as shown in the following screenshot:

Wireless networks and physical workspaces

Going back to the corporate office, move the laptop out of this wireless range and test the connectivity by pinging the PC. We will find that this fails because the laptop is out of range, as shown in the following screenshot:

Wireless networks and physical workspaces

Thus, we've demonstrated the range of wireless devices using the physical workspace.

Configuring a Linksys access point

So far, we have configured wireless networks without additional features such as encryption or DHCP. In this section, we'll use the Linksys devices available in Packet Tracer and create a topology with all these features.

We will also add a server (RADIUS) to this topology and enable RADIUS authentication. WPA2-PSK enterprise will be the mode of authentication we will choose in the Linksys router (Wireless Router0). After building this topology, switch the default module of the laptop (Laptop0) with a Linksys-WMP300N module. Open the Linksys router, go to the GUI tab, navigate to the Wireless tab, and change the SSID field. We'll be using Linksys for this demo, as shown in the following figure:

Configuring a Linksys access point

Open the server, navigate to the Config tab, select AAA, and configure RADIUS authentication with four user credentials. Configuration will be as follows.

Network configuration will be as follows:

ClientName

ClientIP

ServerType

Key

Linksys

192.168.0.1

Radius

password

User setup will be as follows:

UserName

Password

alice

pwd

bob

s3ret

john

secr3t

user1

passwd

Configure a static IP for the server as 192.168.0.50. Next, under the GUI tab of the Linksys router, navigate to Wireless | Wireless security and enter the following settings:

Security Mode

WPA2 Enterprise

Encryption

AES

RADIUS Server

192.168.0.50

RADIUS Port

1645

Shared Secret

password

Move on to the wireless end devices, go to the Config tab, select Wireless, and enter the following settings:

  • SSID: Linksys
  • Authentication: WPA2
  • User ID: john
  • Password: secr3t

Make sure you use a different pair of credentials for each wireless end device. Once this is configured, the end device will get an IP address and you'll see the wireless link indicating a connection.

Now, we'll configure the laptop that has the Linksys module. Go to the Desktop tab, open the PC Wireless utility, choose the Profiles tab, and click on New. Enter any name here, you'll see a list with the SSID name shown, click on Advanced Setup and a wizard will guide you through the process.

Configuring a Linksys access point

Use the simple PDU tool to test the connectivity. If you use the simulation mode before a wireless connection is established between two devices, you will see the RADIUS packet being sent to the server by the router.