Netw205

Packet Tracer – Who Hears the Broadcast?

Topology

Objectives

Part 1: Observe Broadcast Traffic in a VLAN Implementation

Part 2: Complete Review Questions

Scenario

In this activity, a 24-port Catalyst 2960 switch is fully populated. All ports are in use. You will observe

broadcast traffic in a VLAN implementation and answer some reflection questions.

Part 1: Observe Broadcast Traffic in a VLAN Implementation

Step 1: Use ping to generate traffic.

a. Click PC0 and click the Desktop tab> Command Prompt.

b. Enter the ping 192.168.1.8 command. The ping should succeed.

Unlike a LAN, a VLAN is a broadcast domain created by switches. Using Packet Tracer Simulation mode,

ping the end devices within their own VLAN. Based on your observation, answer the questions in Step 2.

Step 2: Generate and examine broadcast traffic.

a. Switch to Simulation mode.

© 2013 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public.

Page 1 of 2

Packet Tracer - Who Hears the Broadcast?

b. Click Edit Filters in the Simulation Panel. Uncheck the Show All/None checkbox. Check the ICMP

checkbox.

c.

Click the Add Complex PDU tool, this is the open envelope icon on the right toolbar.

d. Float the mouse cursor over the topology and the pointer changes to an envelope with a plus (+) sign.

e. Click PC0 to serve as the source for this test message and the Create Complex PDU dialog window

opens. Enter the following values:



Destination IP Address: 255.255.255.255 (broadcast address)



Sequence Number: 1



One Shot Time: 0

Within the PDU settings, the default for Select Application: is PING. What are at least 3 other

applications available for use?

f.

Click Create PDU. This test broadcast packet now appears in the Simulation Panel Event List. It also

appears in the PDU List window. It is the first PDU for Scenario 0.

g. Click Capture/Forward twice. What happened to the packet?

h. Repeat this process for PC8...