pt-createtopology.doc

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Packet Tracer – Creating a New Topology

What is Packet Tracer? Packet Tracer is a protocol simulator developed by Dennis Frezzo and his team atCisco Systems. Packet Tracer (PT) is a powerul and dynamic tool that displays the various protocols usedin networkin!" in either #eal Time or Simulation mode. This includes layer $ protocols such as %thernet andPPP" layer & protocols such as 'P" 'CP" and #P" and layer * protocols such as TCP and +DP. #outin!protocols can also be traced.

Purpose, The purpose o this lab is to become amiliar with buildin! topolo!ies in Packet Tracer.

Requisite knowledge, This lab assumes some understandin! o the %thernet protocol. t this point wehave not discussed other protocols" but will use Packet Tracer in later labs to discuss those as well.

Version, This lab is based on Packet Tracer -..

Step 1 Start Packet Tracer

#ick /razianiCabrillo Colle!e

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Step ! Choosing "e#ices and Connections

0e will be!in buildin! our network topolo!y by selectin! devices and the media in which to connect them.Several types o devices and network connections can be used. For this lab we will keep it simple by usin!$nd "e#ices" Switches" %u&s" and Connections.

Sin!le click on each !roup o devices and connections to display the various choices. The devices you seemay dier sli!htly.


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Step ' (uilding the Topology – )dding %osts

Sin!le click on the $nd "e#ices.

Sin!le click on the *eneric host.

ove the cursor into topolo!y area. 1ou will notice it turns into a plus 234 si!n.

Sin!le click in the topolo!y area and it copies the device.

dd three more hosts.


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Step + (uilding the Topology – Connecting the %osts to %u&s and Switches

)dding a %u&

Select a hub" by clickin! once on %u&s and once on a *eneric hub.

dd the hub by movin! the plus si!n 2,4 below PC and PC5 and click once.

Connect PC to 6ub by irst choosin! Connections-

Click once on the Copper Straight.through cable.


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Perorm the ollowin! steps to connect PC/ to %u&/,

1. Click once on PC/

2. Choose 0ast$thernet

3. Dra! the cursor to %u&/

4. Click once on %u&/ and choose Port /

5. 7otice the !reen link li!hts on both the PC/ %thernet 7'C and the %u&/ Port showin! that the link

is active.

1 ! ' +

#epeat the steps above or PC1 connectin! it to Port 1 on %u&/. (The actual hub port you choose does notmatter.)


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)dding a Switch

Select a switch" by clickin! once on Switches and once on a !2/.!+ switch.

dd the switch by movin! the plus si!n 2,4 below PC$ and PC& and click once.

Connect PC$ to 6ub by irst choosin! Connections-

Click once on the Copper Straight.through cable.


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Perorm the ollowin! steps to connect PC! to Switch/,

1. Click once on PC!

2. Choose 0ast$thernet

3. Dra! the cursor to Switch/

4. Click once on Switch/ and choose 0ast$thernet/31

5. 7otice the !reen link li!hts on PC! %thernet 7'C and amber li!ht Switch/ 0ast$thernet/31 port.

The switch port is temporarily not orwardin! rames" while it !oes throu!h the sta!es or theSpannin! Tree Protocol (STP) process.

8. ter a about & seconds the amber li!ht will chan!e to !reen indicatin! that the port has entered theorwardin! sta!e. Frames can now orwarded out the switch port.

7ote, Spannin! Tree Protocol (STP) is discussed later.

1 ! ' + 4

#epeat the steps above or PC' connectin! it to Port ' on Switch/ on port 0ast$therent/3!. (The actualswitch port you choose does not matter.)

ove the cursor over the link li!ht to view the port number. 0a means Fast%thernet" 5 bps %thernet.


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Step Con5iguring 6P )ddresses and Su&net 7asks on the %osts

9eore we can communicate between the hosts we need to coni!ure 'P ddresses and Subnet asks onthe devices.

Click once on PC.

Choose the Con5ig tab and click on Settings. 't is here that you can chan!e the name o PC. 't is alsohere where you would enter a *ateway 'P ddress" also known as the deault !ateway and the "NS Ser#er

'P ddress. 0e will discuss this later" but this would be the 'P address o the local router. ' you want" youcan enter the /ateway 'P ddress 5:$.58.5.5 and D7S Server 'P ddress 5:$.58.5.5" althou!h it will notbe used in this lab.


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Click on 6nter5ace and then 0ast$thernet. lthou!h we have not yet discussed 'P ddresses" add the 'P ddress to 5:$.58.5.5. Click once in the Subnet ask ield to enter the deault Subnet ask. 1ou canleave this at $--.$--... 0e will discuss this later.

lso" notice this is where you can chan!e the 9andwidth (speed) and Duple; o the %thernet 7'C (7etwork

'nterace Card). The deault is uto (autone!otiation)" which means the 7'C will ne!otiate with the hub orswitch. The bandwidth and


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To close this dialo! bo;" click the 294 in the upper ri!ht.

#epeat these steps or the other hosts. +se the inormation below or 'P ddresses and Subnet asks.

%ost 6P )ddress Su&net 7askPC 5:$.58.5.5 $--.$--..PC5 5:$.58.5.55 $--.$--..PC$ 5:$.58.5.5$ $--.$--..PC& 5:$.58.5.5& $--.$--..

Veri5y the in5or:ation

To veriy the inormation that you entered" move the Select tool (arrow) over each host.

"eleting a "e#ice or ;ink

To delete a device or link" choose the "elete tool and click on the item you wish to delete.


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Step 4 Connecting %u&/ to Switch/

To connect like>devices" like a 6ub and a Switch" we will use a Cross>over cable. Click once the Cross.o#er Cable rom the Connections options.

ove the Connections cursor over %u&/ and click once.

Select Port (actual port does not matter).


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ove the Connections cursor to Switch/.

Click once on Switch/ and choose 0ast$thernet/3+ (actual port does not matter).

The link li!ht or switch port 0ast$thernet/3+ will be!in as amber and eventually chan!e to !reen as theSpannin! Tree Protocol transitions the port to orwardin!.


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Resetting the Network

t this point we will want to reset the network" 0henever you want to reset the network and be!in thesimulation a!ain" perorm the ollowin! tasks,

Click "elete in the PD+ area.

7ow" Power Cycle Devices and conirm the action.

Waiting 5or Spanning Tree Protocol >STP

Note, 9ecause Packet Tracer also simulates the Spannin! Tree Protocol (later)" at times the switch mayshow amber li!hts on its interaces. 1ou will need to wait or the li!hts to turn !reen on the switches beorethey will orward any %thernet rames.


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Step @ Veri5ying Connecti#ity in Si:ulation 7ode

9e sure you are in Si:ulation mode.

Deselect all ilters (ll


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Select the )dd Si:ple P"= tool used to pin! devices..

Click once on PC" then once on PC&.

Continue clickin! Capture30orward button until the 'CP pin! is completed. 1ou should see the 'CPmessa!es move between the hosts" hub and switch. The PD+ ;ast Status should show as Success5ul.Click on Clear $#ent ;ist i you do not want to look at the events or click Pre#iew Pre#ious $#ents i youdo. For this e;ercise it does not matter.


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Step 2 Sa#ing the Topology

Perorm the ollowin! steps to save the topolo!y (uses .pkt ile e;tension).


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Apening $8isting Topologies

Apening $8isting PT Topologies


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pt-createtopology.doc

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