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  GNS3 Topology Overview

Note: You may not understand all the terms used in this video at the moment, but through this GNS3 topology we will be covering a lot of CCNA topics.


Download GNS3 topology:

You can download the GNS3 file from here.

Next steps:

Either go to the next video which continues explaining network theory, or jump to the GNS3 topology video using the link below:


GNS3 Campus 1: Switch Hostnames, VTP and VLANs:

Start here: Switch Hostnames, VTP and VLANs Part 1


Update:

The next video shows you how to import and configure an IOSvL2 appliance in GNS3.

Recommendations:

1) Download the IOSvL2 appliance from the GNS3 site to set up this topology.

2) Use the GNS3 VM



Here are my settings for reference:

27 comments
jeffrey schwartz
Greetings,

I'm trying to import the GNS3 file but every time I try it reports that it cannot find file
c3725-adventerprisek9-mz.124-15.T14.image which I do not have. I do have c3725-adventerprisek9-mz.124-25d.bin. What's the easiest way to change the project to see the file that I have? I have checked on cisco's site but files for the 3725 series are no longer available.
David Bombal
Hi Jeffrey,

When you import the project, you should have the option to select a different IOS image. So, you should be able to use your 3725 image instead of mine.

Regards,
David
Adam Yahya
Is there a video where you take us through the GNS3 setup?

EDIT: Specifically, I have downloaded the topology file and while it loads, the connections between the NPM --> S1 disappear as do the connection from R3 --> Cloud as well.

I haven't downloaded the NPM yet so I'm assuming that's why it disappeared but what about the cloud? What type of configuration are you using for that and how did you set that up?

Thanks
David Bombal
Hi Adam,

Don't worry about the NPM server for now. You can add that later.

For the cloud, I used a local cloud connection on my Windows PC. You can do that or add it directly to the GNS3 VM as per this video: https://www.youtube.com/watch?v=yNYkUQF4Kr8

All the best!
David
Patricia Cabrera
Hi David,
Could you be so kind to show us how to setup the GNS VM either by using a video or a guide step by step, I think that I am still missing something... Since you made "Recommendations"

1) Download the IOSvL2 appliance from the GNS3 site to set up this topology.

2) Use the GNS3 VM

Thank you in advance and kindest regards.

David Bombal
Hi Patricia,

Go here to watch videos of the GNS3 VM installation and setup (the videos previous to this show you how to install the GNS3 GUI):
http://academy.gns3.com/courses/gns3-fundamentals-official-course/lectures/894222

All the best!

Regards,
David
frank obie
Hello David,
I've spent the last 3 days struggling with importing .OVA file in my Gns3 platform, i have followed step by step on how you presented it on GNS fundamental videos- the video on vmware workstation gns3. My hickups starts at the point of migrating it to GNS platform-where i've to choose the option of "local vmware server and then vmware option, i get a pop-up window saying - "vmware vmrun tool could not be found, vmware or the vix API (required for vmware player) is probably not installed, you can download from vmware/vix-api".
By the way i'm using gns version 1.5.2.
I've followed your steps on downloading and installing all required softwares and followed your steps on integrating them but so far i'ven't gone past the steps listed above. I really want to learn the configuration steps, i've being reading for a year and all i need now is the hands on. Right now i'm over frustrated with GNS configuration but i dont want the cheap route going with packet tracer. Is there something i'm doing wrong, i know i dont have screen shots to show you i tried but i couldnt do it, im using windows 8, INTEL petium n3540 platform and i had to enable virtualization from BIOS because it wasn't and that took a day to figure out i needed to that, i thought after that it will be easy to just follow your steps and get it done but is still not, also there another way to go about geting the hands on other than packet tracer.
any advice will help...Desparate.
Frank
frank obie
Hi David,
Though i'm a few days late with this feed babck, i appreciate the reply. I've since my post, figured out the issues and have all the necessary vmware up and running now. I really appreciate your course.
thanks
Maxium Reed
Can you share what you did to get importing .OVA file in my Gns3 platform
David Bombal
Hi Maxium,

I am using the GNS3 VM which you can get from here:
https://gns3.com/support/docs/download-the-gns3-vm

All the best!

David
David Bombal
Hi Frank,

Excellent news!!

I am glad you got it working :)

I think GNS3 is worth any of the "pain" of setup one may experience. Once you get it working the features and options are amazing.

All the best and thank you for the feedback.

Regards,
David
David Bombal
Hi Frank,

I suggest you start with a basic GNS3 topology without the GNS3 VM and get that working first. Then try the more complex topologies using the GNS3 VM and IOSvL2.

For technical support, the best place to get help is the community. There are a lot of very experienced engineers in the community:
https://gns3.com/community

Regards,
David
Ryan Havers
Hi David,

Is there an alternate GNS3 topology that is available for the course? I'm running GNS3 VM using Virtual Box on OSX. I don't have a Windows license, so cannot use the NPM server. It seems that I cannot use the IOSvL2 because QEMU only works with VMWare (correct me if I'm wrong). Also, the appliance isn't enough? I also need the actual IOS for that L3 switch? Hitting many walls with this one and wondering if there is another option.

thanks,
Ryan
David Bombal
Hi Ryan,

The course contains various GNS3 topologies, but does also contain a lot of built in simulations (only requires a web browser). If you cannot get the GNS3 topologies working, you could still learn a lot by using the simulations and watching the videos. This is a complex GNS3 topology, but does provide a good basis for especially the layer 2 content. Other GNS3 topologies are simpler.

Some suggestions:
- This is only one of the GNS3 topologies used in the course. It is a campus type lab and uses IOSvL2 as that is the best image for showcasing layer 2 and other switching capabilities. I am however using this topology a lot and building on it throughout the course. But, you don't have to build this exact topology if you don't want to.

- Don't worry about the NPM device. Just delete it as it is not important for most of the labs.

- I believe you should be able to use VirtualBox, but VMware workstation / fusion is better.

- I am using an IOSvL2 image for the switches and a 3725 router image for the Routers / PCs.

I hope that helps.

Regards,
David

Seyl
Hello David,

Would it possible to show the QEMU VM template pane for the IOSvl2 device. I appear to be having issues running it successfully. Even with GNS3 VM running successfully.
David Bombal
Hi Seyl,

Please see above screenshots and some advice.

I hope this helps!

Regards,
David
Seyl
Thank you so much for that David. Had somewhat hit a brick wall with the set up but hopefully this sets all the right pointers. Have enjoyed the material thus far. It now all works
Christopher Loecher
where can we get the IOSvL2 Files from?
David Bombal
Hi Christopher,

I will create a video showing the process, but for now, please see above screenshots for some advice. I recommend you download and use the IOSvL2 appliance as it will make things a lot easier for you.

Regards,
David
David Bombal
Hi Christopher,

You need to get the IOSvL2 images from VIRL: http://virl.cisco.com

However, these are paid for images.

Regards,
David
Christopher Loecher
Is there a tutorial on how to load the IOSvL2 files?
Adam Yahya
Is there a topology file provided somewhere?
David Bombal
Hi Adam,

I have added a link above to the GNS3 topology file. This topology uses mainly IOSvL2 devices running in the GNS3 VM. It also has 3 Cisco IOS routers.

All the best.

Regards,
David
David Bombal
Thanks Adam.

I am glad you are enjoying the course!

We are still making a lot of changes to improve the content - more sims, more GNS3 labs, more videos etc.

Any feedback on ways I can improve the content is appreciated.
Adam Yahya
Excellent, much appreciated thank you and amazing series!
Thomas Blair
where are the iosvl2 devices
David Bombal
Hi Thomas,

You need to get the IOSvL2 images from VIRL: http://virl.cisco.com

Regards,
David