Introduction to GNS3

2011-05-09T23:31:51Z

Lueyang: /* Creating a Sample Topology */

==Introduction==
[[Image:01_gns3_logo.jpg|thumb|thumb|upright|GNS3 Logo|200px]]
In project will give you a brief introduction to GNS3 as a Quick Start Guide only. It will not cover everything you need to know about GNS3. For more information and detail, please refer to the official website at http://www.gns3.net/.

GNS3 is an open source, free program that can be used to to simulate actual Cisco IOS and even Juniper JunOS, too. GNS3 is a graphical network simulator that allows emulation of complex networks. It allows you to run a Cisco IOS in a virtual environment on your computer running Windows or Linux OS. Emulation is possible based on Cisco router platforms and PIX firewalls. It is a great tool for people who preparing for Cisco certifications such as CCNA and CCNP certifications. I found that it is a very good tool for learning and testing in a lab environment. However, there are some advantage and disadvantage of GNS3.

===Advantages of GNS3===
*GNS3 is an open source, free program.
*GNS3 runs an actual Cisco IOS.
*Can simulate complex network compare to Cisco Packet Tracer and other programs.

===Disadvantage of GNS3===
*High CPU utilization.
*It can not take the place of a real router.
*Slow throughput compare to real equipments.
*Very limited switching functionality.
*Limited Cisco device platforms supported.

==Quick Start Guide==
I will show you how to download, install, and setup a simple lab using GNS3. There are Windows version and Linux version of GNS3 but I will discus the version for Windows only in this project.

===Downloading GNS3===
Most of the time you will need to download the all-in-one package that contains everything you need (Dynamips, Qemu/Pemu, Putty and WinPCAP).
To download GNS3, go to http://www.gns3.net/download and on the "GNS3 v0.7.4 all-in-one" on the website, or you may simply click [http://sourceforge.net/projects/gns-3/files/GNS3/0.7.4/GNS3-0.7.4-win32-all-in-one.exe/download here] to download the all in one package.

[[File:01_dl_gns3.jpg]]

===Installing GNS3===
Once you have downloaded the package, just double click it and follow the on screen instructions. Note that GNS3 depends on many dependencies such as WinPCAP, Dynamips, and Pemuwrapper. These dependencies must be installed along with GNS3 in order for GNS3 to work correctly.

===Defining Cisco IOS files===
Before we configure the location for a Cisco ISO, we must have a Cisco ISO for one of the supported platforms. Remember that not every Cisco ISO images are supported in GNS3. Only certain IOS from older platforms of Cisco routers are supported. Current platforms supported include: Cisco '''1700, 2600, 2600mx, 2691, 3600, 3700, and 7200 series''' routers.
In this example, I will use the IOS image from my Cisco 2621xm router. The IOS I am using here is '''c2600-i-mz.122-8.T5.BIN'''.

===Setting GNS3 Environment===
Once the installation is completed, you need to set the path to Dynamips executable and IOS location. Follow the steps on the "Setup Wizard" windows to complete the requirements at the first time you lunch GNS3.

*Step 1: On the Preferences windows, click on Dynamips. You can change the working directory if you want to and then click on the "Test" button. It should says that "Dynamips successfully started" and then click '''Apply''' and then '''OK''' buttons. This test will make sure that everything working correctly.

*Step 2: On the IOS image and hypervisors windows, add the IOS image you have into the windows and close the IOS image windows and the Setup Wizard windows. You can add more than one image for use in GNS3.

{|
| [[Image:02_gns3.jpg|thumb|upright|Setup Wizard Windows|280px]]
| [[Image:03_gns3.jpg|thumb|upright|Testing Dynapips|280px]]
| [[Image:04_gns3.jpg|thumb|upright|Adding IOS Image|280px]]
|}

===Building a Network topology===
Once want the IOS image is defined, you are ready to build your network topology, power on your devices, and configure the network. Note that you can use only the router platforms corresponding to the images you have defined earlier. You must define all the images corresponding to the platform routers that you want to use in your lab. In this example I have defined the image for the Cisco 2600 series router, so I will be able to use the 2600 router only.

*To create a network diagram, just click on the device icon you needed from the left pane and drag and drop it into the work area or work space which is the middle top area. In this example, I am using the 2600 platform so I can only use the '''Router C2600'''. In this example diagram, I placed two routers and two switches on the work space.

*To cable the network, click the '''Add a link''' button on the toolbar at the top and choose manual from the drop-down menu. Your mouse cursor will change to '''+''' sign. Click on the router or device you want to connect from and select the interface you want to connect. Click on the destination router or device you want to connect to and then select the interface you want to connect to.

[[File:05_gns3.jpg]]

*To configure the network, first you need to power on the devices. Right-click on each each device and choose Start. Then right-click the device you want to configure and choose Console. A telnet console should opens up. Note that some devices such as the Ethernet switch are not configurable through telnet console.

[[File:06_gns3.jpg]]

Now you can configure the router as you would configure a real Cisco router.

==Conclusion==

File:05 gns3.jpg

2011-05-09T20:58:00Z

Lueyang:

Introduction to GNS3

2011-05-09T20:57:42Z

2011-05-09T07:44:30Z

Lueyang:

Introduction to GNS3

2011-05-08T22:25:44Z

Lueyang:

GNS3 is a graphical network simulator that can be used to simulate actual Cisco IOS and Juniper JunOS. It is an open source, free program that can be download at http://www.gns3.net/.

The main purpose of this lab is to show you how to use GNS3 to setup a lab using a Cisco IOS.

Introduction to GNS3

2011-05-08T21:18:37Z

Lueyang: Created page with "GNS3 is a graphical network simulator that can be used to simulate actual Cisco IOS and Juniper JunOS. It is an open source, free program that can be download at http://www.gns3...."

GNS3 is a graphical network simulator that can be used to simulate actual Cisco IOS and Juniper JunOS. It is an open source, free program that can be download at http://www.gns3.net/.

Franske CNT-2540

2010-12-15T03:11:59Z

Lueyang: /* Projects */

This is the homepage for the CNT-2540: Accessing the WAN classes taught by Dr. Ben Franske.

= General Course Information =
* [[Franske CNT-2540 Syllabus|Course Syllabus]]
* [[Franske CNT-2540 FA10 Schedule|Fall 2010 Course Schedule]]
* [[Franske CNT-2540 Labs and Homework|Lab and Homework List]]
* [[Franske CNT Service Project Assignment|Service Project Assignment]]
* [[Franske Lab Report Format|Lab Report Format]]
* Assessments and online curriculum available at [http://cisco.netacad.net http://cisco.netacad.net]

= Projects =
*[[Frame relay multipoint lab]]
*[[How to configure SDM to secure a router]]
*[[ISDN WAN Connections]]
*[[IEEE 802.1x Port-Based Authentication]]
*[[Password Recovery and Device Reset Procedures]]
*[[How to Configure GRE VPN]]
*[[Wake On LAN]]

= Resources =
== Certification ==
* [[CCNA Voucher Information]]
== General WAN Information ==
* [http://www.cisco.com/en/US/docs/internetworking/troubleshooting/guide/tr1915.html Cisco Guide to Troubleshooting Serial Line Problems]
== WAN Protocols ==
=== Frame Relay ===
* [http://www.cisco.com/en/US/tech/tk713/tk237/tsd_technology_support_protocol_home.html Cisco Frame Relay Technology Pages]
* [http://www.cisco.com/en/US/docs/internetworking/design/guide/nd2009.html Cisco Frame Relay Internetwork Design Guide]
* [http://www.cisco.com/en/US/docs/internetworking/troubleshooting/guide/tr1918.html Cisco Guide to Troubleshooting Frame Relay Connections]
* [http://www.cisco.com/en/US/tech/tk713/tk237/technologies_tech_note09186a008014f8a7.shtml Cisco Comprehensive Guide to Configuring and Troubleshooting Frame Relay with configuration examples]

== Subnetting ==
* [http://www.learntosubnet.com LearnToSubnet.com] (Requires using Internet Explorer)

Franske Current Student Projects

2010-12-15T03:10:08Z

Lueyang: /* CNT 2540 */

=FALL 2010=
==CNT 2311==
* [[Understanding Linux Permission Sets]] - Casey McBride
* NAT with a Linux System - Tsega Terefe
* Alphabetical Linux Command List - Don Bliss

==CNT 2540==
* Lab Maintenance - Samuel Francis
* Update/Correct Frame Relay and ISDN Labs - Adam Nelson & Dan Martin

Franske Completed Student Projects

2010-12-15T03:03:54Z

Lueyang: Created page with '==CNT 2540== * Wake On LAN - Lue YANG'

==CNT 2540==
* [[Wake On LAN]] - Lue YANG

File:Wol08.jpg

2010-12-15T02:58:50Z

Lueyang: uploaded a new version of "File:Wol08.jpg"

Wake On LAN

2010-12-15T02:52:52Z

Lueyang:

=='''Introduction to WOL'''==
*Wake on LAN (WOL), sometime called Remote Wake Up, is an Ethernet computer networking standard that allows you to turn-on a power-off computer or wake-up a sleeping or hibernating computer from another location over a network connection. WOL works by sending a special message or signal over a local area network (LAN) or a wide area network (WAN), such as the Internet, to trigger power-up of a computer on a private LAN.

==Purpose of Using WOL==
Some of the purposes of using WOL are:
#saves time.
#Saves electrical energy.
#Saves money on electricity bills.
#A PC is more secure from hackers when it is off.
#Allows users to turn on and shutdown PCs remotely, etc.

Bellow are some example of using WOL.
*You want to be able to access your home computer anywhere at anytime you want, but you don't want to through money away for your computer that has to be turned on all the time. You want to turn it on when you want to use it and shut it down when you are done.
*You may want to access your home PC from work or your work PC from home, you might want to turn it on and get access to your files remotely, and then shut it down when you're done.
*You want to access your files on your computer at home while you are traveling.
*A technician may want to perform schedule and maintenance tasks without physically visit each computer on the network.
Implementing WOL can help you to achieve some of the above goals.

==Hardware Requirements==
A PC which supports WOL is required to enable WOL technology. Hardware requirements for WOL includes:

# An ATX power supply that meets ATX 2.01 specifications.
# An ATX motherboard with an onboard 3-pin WOL connector, and a network card that can support WOL with its cable to the motherboard properly installed. Most motherboards today has a built in NIC and support Wake on LAN functionality.
*NOTE: Most PCs today have the above specifications built-in. You may check if your have a PC that supported WOL by checking in the Power Management option in BIOS.

=='''My Example Lab'''==
In this lab, I will walk you through the steps of enabling WOL, installing utility software, and testing it on a local area network (LAN). I used a PC and a laptop which both connected to a switch. The switch connected to a router that has connection to the internet. The PC I used in this lab is a custom built PC, and it has Windows XP Operating System installed. The installed motherboard is ASUS Rampage II Formula witch has quad ports NIC built-in, and the power supply is BFGR650PSU manufactured by BFG Tech.

The performed this lab as follow:
#Enable WOL on the PC.
#Install a WOL utility on the laptop.
#Use the utility to trigger power on of the PC.
#Test to see if the PC has power on or not using ping command.
#Connect to the PC using Remote Desktop Connection software.

===Enabling WOL===
In order for WOL to work, WOL feature must be enable in BIOS and Operating System. The process of enabling WOL may be different for each motherboard, so you may need to do some research on your motherboard.
*On the ASUS Rampage II Formula, there are two options that must be enable in BIOS and also two option in Windows XP. WOL feature is enabled on my PC by following the steps bellow.
#Enable '''LAN Boot ROM'''. Power on the PC and press Delete key to enter the BIOS setup. Select '''Advanced>LAN Boot ROM>Enabled'''.
#Enable '''Power On By PCIE Devices'''. Select '''Power>APM Configuration>Power On By PCIE Devices>Enabled'''.
#Go to '''Exit and save changes''' to save the setting. Then it will boot into Windows Operating System normally.
{|
| [[Image:wol01.jpg|thumb|upright|ENABLE WOL IN BIOS 1|200px]]
| [[Image:wol02.jpg|thumb|upright|ENABLE WOL IN BIOS 2|200px]]
| [[Image:wol03.jpg|thumb|upright|ENABLE WOL IN BIOS 3|200px]]
| [[Image:wol04.jpg|thumb|upright|ENABLE WOL IN BIOS 4|260px]]
|}
*WOL must be enabled on the Operation System you are running. Here I will show you how to enable WOL in Windows XP.
#Go to "Start>Control Panel>Network Connection". Right clicking on "Local Area Connection>Properties". Click on "Configure" button, and click on "Advanced" tab. Scroll down until you see '''Wake From Shutdown''' and '''Wake Up Capabilities'''.
#Select "Wake From Shutdown" and change the value from Off to '''On'''.
#Select '''Wake Up Capabilities''' and change the value to '''Magic Packet'''.
#Click '''OK''' button to save the changes.
{|
| [[Image:wol05.jpg|thumb|upright|ENABLE WOL IN WINDOWS XP 1|200px]]
| [[Image:wol06.jpg|thumb|upright|ENABLE WOL IN WINDOWS XP 2|450px]]
| [[Image:wol07.jpg|thumb|upright|ENABLE WOL IN WINDOWS XP 3|220px]]
|}
Now the PC is ready for WOL, but you need to make notes of the Mac and IP address of the PC. I used ipconfig /all command to verified made notes of the MAC address and IP address of my PC, and then shut it down.

===Downloading WOL Utility===
There are many tools that you can use to trigger power on of a PC with WOL feature enabled. I used "MC-WOL.EXE" utility. This utility is a DOS command line utility that sends a "Magic Packet" to trigger power on of remote computer. MC-WOL.EXE can be download at http://www.matcode.com/wol.htm.

I have Windows 7 Operating System installed on my laptop. I downloaded MC-WOL.EXE and saved into C:\Users\LUE directory.

===Testing===
Now I tested WOL to watch my PC turn on using the following command. The 00:22:15:46:B0:6B is the mac address of the PC witch has WOL enabled.
mac-wol 00:22:15:46:B0:6B

If the PC with WOL enabled is not physically visible, you can use the ping command follow by -t string to test and see if the target PC is powered on or not. After a while, the ping should be successful as the screen shot bellow. If you have setup everything correctly and the target PC has Remote Desktop Connection enabled, you can remotely connect to it using Remote Desktop Connection.

[[File:wol08.jpg|650px]]

Wake On LAN

2010-12-15T02:43:22Z

Lueyang:

=='''Introduction to WOL'''==
*Wake on LAN (WOL), sometime called Remote Wake Up, is an Ethernet computer networking standard that allows you to turn-on a power-off computer or wake-up a sleeping or hibernating computer from another location over a network connection. WOL works by sending a special message or signal over a local area network (LAN) or a wide area network (WAN), such as the Internet, to trigger power-up of a computer on a private LAN.

==Purpose of Using WOL==
Some of the purposes of using WOL are:
#saves time.
#Saves electrical energy.
#Saves money on electricity bills.
#A PC is more secure from hackers when it is off.
#Allows users to turn on and shutdown PCs remotely, etc.

Bellow are some example of using WOL.
*You want to be able to access your home computer anywhere at anytime you want, but you don't want to through money away for your computer that has to be turned on all the time. You want to turn it on when you want to use it and shut it down when you are done.
*You may want to access your home PC from work or your work PC from home, you might want to turn it on and get access to your files remotely, and then shut it down when you're done.
*You want to access your files on your computer at home while you are traveling.
*A technician may want to perform schedule and maintenance tasks without physically visit each computer on the network.
Implementing WOL can help you to achieve some of the above goals.

==Hardware Requirements==
A PC which supports WOL is required to enable WOL technology. Hardware requirements for WOL includes:

# An ATX power supply that meets ATX 2.01 specifications.
# An ATX motherboard with an onboard 3-pin WOL connector, and a network card that can support WOL with its cable to the motherboard properly installed. Most motherboards today has a built in NIC and support Wake on LAN functionality.
*NOTE: Most PCs today have the above specifications built-in. You may check if your have a PC that supported WOL by checking in the Power Management option in BIOS.

=='''My Example Lab'''==
In this lab, I will walk you through the steps of enabling WOL, installing utility software, and testing it on a local area network (LAN). I used a PC and a laptop which both connected to a switch. The switch connected to a router that has connection to the internet. The PC I used in this lab is a custom built PC, and it has Windows XP Operating System installed. The installed motherboard is ASUS Rampage II Formula witch has quad ports NIC built-in, and the power supply is BFGR650PSU manufactured by BFG Tech.

The performed this lab as follow:
#Enable WOL on the PC.
#Install a WOL utility on the laptop.
#Use the utility to trigger power on of the PC.
#Test to see if the PC has power on or not using ping command.
#Connect to the PC using Remote Desktop Connection software.

===Enabling WOL===
In order for WOL to work, WOL feature must be enable in BIOS and Operating System. The process of enabling WOL may be different for each motherboard, so you may need to do some research on your motherboard.
*On the ASUS Rampage II Formula, there are two options that must be enable in BIOS and also two option in Windows XP. WOL feature is enabled on my PC by following the steps bellow.
#Enable "LAN Boot ROM". Power on the PC and press Delete key to enter the BIOS setting, and then select "Advanced>LAN Boot ROM>Enabled".
#Enable "Power On By PCIE Devices". Select "Power>APM Configuration>Power On By PCIE Devices>Enabled".
#Go to "Exit and save changes" to save the setting. Then it will boot into Windows Operating System normally.
{|
| [[Image:wol01.jpg|thumb|upright|ENABLE WOL IN BIOS 1|200px]]
| [[Image:wol02.jpg|thumb|upright|ENABLE WOL IN BIOS 2|200px]]
| [[Image:wol03.jpg|thumb|upright|ENABLE WOL IN BIOS 3|200px]]
| [[Image:wol04.jpg|thumb|upright|ENABLE WOL IN BIOS 4|260px]]
|}
*WOL must be enabled on the Operation System you are running. Here I will show you how to enable WOL on Windows XP.
#Go to "Start>Control Panel>Network Connection". Right clicking on "Local Area Connection>Properties". Click on "Configure" button, and click on "Advanced" tab. Scroll down until you see "Wake From Shutdown" and "Wake Up Capabilities".
#Select "Wake From Shutdown" and change the value from Off to "On".
#Select "Wake Up Capabilities" and change the value to "Magic Packet".
#Click "OK" to save the changes.
{|
| [[Image:wol05.jpg|thumb|upright|ENABLE WOL IN WINDOWS XP 1|200px]]
| [[Image:wol06.jpg|thumb|upright|ENABLE WOL IN WINDOWS XP 2|450px]]
| [[Image:wol07.jpg|thumb|upright|ENABLE WOL IN WINDOWS XP 3|220px]]
|}
Now the PC is ready for WOL, but you need to make notes of the Mac and IP address of the PC. I used ipconfig /all command to verified made notes of the MAC address and IP address of my PC, and then shut it down.

===Downloading WOL Utility===
There are many tools that you can use to trigger power on of a PC with WOL feature enabled. I used "MC-WOL.EXE" utility. This utility is a DOS command line utility that sends a "Magic Packet" to trigger power on of remote computer. MC-WOL.EXE can be download at http://www.matcode.com/wol.htm.

I have Windows 7 Operating System installed on my laptop. I downloaded MC-WOL.EXE and saved into C:\Users\LUE directory.

===Testing===
Now I tested WOL to watch my PC turn on using the following command. The 00:22:15:46:B0:6B is the mac address of the PC witch has WOL enabled.
mac-wol 00:22:15:46:B0:6B

If the PC with WOL enabled is not physically visible, you can use the ping command follow by -t string to test and see if the target PC is powered on or not. After a while, the ping should be successful as the screen shot bellow. If you have setup everything correctly and the target PC has Remote Desktop Connection enabled, you can remotely connect to it using Remote Desktop Connection.

[[File:wol08.jpg|768px]]