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download iou images for gns3

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Download IOU Images for GNS3


If you are a network engineer or a student who wants to practice Cisco networking skills on GNS3, you might have heard of IOU. IOU stands for IOS on Unix/Linux, and it is a software that allows you to run Cisco IOS images on a Unix or Linux operating system. IOU can emulate both Layer 2 and Layer 3 devices, which makes it ideal for creating complex network topologies on GNS3.


In this article, we will show you how to download IOU images for GNS3, how to install them on the GNS3 VM, and how to add them to your GNS3 topology. By following these steps, you will be able to use real Cisco switch and router features on your virtual network lab.


Prerequisites for using IOU with GNS3


Before you can use IOU with GNS3, you need to have some prerequisites in place. These are:




The GNS3 VM: This is a virtual machine that runs the GNS3 server and provides better performance and compatibility than using your local computer. You can download the GNS3 VM from [9](https://gns3.com/software/download-vm) and import it into your preferred hypervisor (VMware or VirtualBox).


The IOU license file: This is a file that authorizes you to use IOU images on your system. You can obtain this file from Cisco if you have a valid service contract with them. Alternatively, you can generate this file using some online tools or scripts. However, be aware that this might violate Cisco's terms and conditions.


The IOU images: These are the actual files that contain the Cisco IOS software for different devices. You can download these files from Cisco's website if you have a valid account with them. Otherwise, you can find these files from other sources on the Internet. However, be careful about the source's reliability and the file's integrity and compatibility.




How to download IOU images for GNS3


Option 1: Download from Cisco website


If you have a Cisco account with a valid service contract, you can download IOU images directly from their website. Here are the steps:




Log in to your Cisco account and go to the Downloads section.


Search for "IOU" in the search box and select the product category that matches your desired device (for example, "Cisco IOS on UNIX - Layer 2 Switching").


Select the image that suits your needs (for example, "i86bi-linux-l2-adventerprisek9-15.1a.bin") and click on Download.


Agree to the terms and conditions and save the file to your computer.




Option 2: Download from other sources
Option 2: Download from other sources


If you do not have a Cisco account or a valid service contract, you can try to download IOU images from other sources on the Internet. However, you need to be careful about the source's reliability and the file's integrity and compatibility. Here are the steps:




Find a source that provides IOU images for GNS3. You can use search engines, forums, blogs, or file-sharing websites to look for them. Some examples of sources are [8](https://gns3network.com/download/cisco-iou-l2-l3-collection-v4/) and [7](https://www.gns3.com/discussions/working-iou-images).


Check the file integrity and compatibility before downloading. You can use tools like MD5 or SHA checksums to verify that the file is not corrupted or tampered with. You can also check the file name and size to make sure that it matches the device and version that you want to use.


Download the file to your computer and save it in a safe location.




How to install IOU images on GNS3 VM


After you have downloaded the IOU images, you need to install them on the GNS3 VM. This will allow the GNS3 server to access them and run them on your virtual network lab. Here are the steps:




Connect to the GNS3 VM via SSH. You can use tools like PuTTY or Terminal to do this

The Ultimate Guide to Download IOU Images for GNS3

descargar iou para gns3

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Cómo descargar IOU para GNS3


Si está interesado en aprender acerca de los dispositivos de red de Cisco, es posible que haya oído hablar de GNS3 y IOU. GNS3 es un simulador de red popular que le permite crear topologías de red virtual utilizando varios emuladores y simuladores. IOU significa IOS en Unix/Linux, que es una versión de Cisco IOS que se ejecuta en sistemas operativos Unix o Linux. 


Al usar dispositivos IOU en sus proyectos GNS3, puede simular enrutadores e interruptores Cisco con alto rendimiento y flexibilidad. También puede interconectarlos con dispositivos de otros proveedores, como Juniper, Cumulus o Docker.


En este artículo, le mostraremos cómo descargar IOU para GNS3 y usarlo en sus simulaciones de red. También discutiremos algunos beneficios y consejos de solución de problemas para el uso de IOU para GNS3.


Requisitos previos


Antes de descargar y usar IOU para GNS3, necesitará lo siguiente:







Una computadora con sistema operativo Windows, Mac OS o Linux. 


Software GNS3 instalado en su computadora. Puede descargarlo desde 
aquí
. 


GNS3 VM importado en VMware o VirtualBox. Puede descargarlo desde 
aquí
. 


Imágenes de IOU para enrutadores e interruptores. Puede obtenerlas de Cisco u otras fuentes. 


Un archivo de licencia para usar imágenes de IOU en el servidor GNS3. Puede obtenerlo de Cisco u otras fuentes. 




Paso 1: Instalar GNS3 VM


El primer paso es instalar la VM GNS3 en su computadora usando VMware o VirtualBox. La VM GNS3 es una máquina virtual que ejecuta el servidor GNS3 y aloja las imágenes del IOU. Para instalar la VM GNS3, siga estos pasos:




Descargue la VM GNS3 desde 
aquí
. Elija la versión que coincida con su software GNS3 y su hipervisor (VMware o VirtualBox). 



Inicie la máquina virtual GNS3 y espere a que arranque. Debería ver una pantalla con información sobre el servidor GNS3, como la dirección IP y el puerto. 


Abra el software GNS3 en su computadora y vaya a Editar > Preferencias > Servidor. Habilite la opción de usar la VM GNS3 y seleccione su hipervisor. Haga clic en Actualizar y asegúrese de que la VM de GNS3 se detecta y se ejecuta. 




Paso 2: Obtener imágenes de IOU y archivo de licencia


El siguiente paso es obtener las imágenes del IOU y el archivo de licencia para usarlas en el servidor GNS3. Las imágenes de IOU son archivos que contienen el software Cisco IOS para enrutadores y conmutadores. El archivo de licencia es un archivo de texto que contiene una clave para activar las imágenes del IOU. 


Hay diferentes formas de obtener las imágenes del IOU y el archivo de licencia, dependiendo de su acceso a los recursos de Cisco. Si tiene una cuenta válida de Cisco, puede descargarla desde el sitio web de Cisco o utilizar una herramienta llamada Cisco IOU Keygen. Si no tiene una cuenta de Cisco, puede buscarla en línea o preguntar a alguien que la tenga. 


Una vez que tenga las imágenes del IOU y el archivo de licencia, debe cambiarles el nombre de acuerdo con un formato específico. El formato es ioutipo-versión-plataforma. bin, donde:




type es l2 para conmutadores o l3 para enrutadores. 


versión es el número de versión de IOS, como 15.2. 


platform es el nombre de la plataforma, como i86bi-linux-l2-ipbasek9 o i86bi-linux-l3-adventerprisek9. 




Por ejemplo, una imagen de IOU para un switch con IOS 15.2 y IP Base sería llamada ioul2-15.2-i86bi-linux-l2-ipbasek9.bin. 


El archivo de licencia debe llamarse iourc.txt y debe contener una línea como esta:



[license] gns3vm = 1234567890abcdef; 



Donde gns3vm es el nombre de host del servidor GNS3 y 1234567890abcdef es la clave de licencia generada por Cisco IOU Keyg

Descargar Iou Para Gns3

Ios Switch Images For Gns3

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IOU is a less resource intensive alternative to IOSvL2, but the images are not publicly available. You will need to get them from someone who works at Cisco. In addition, as this is a Cisco internal tool, IOU mages may be buggy and no support is available.


Use this if all you need is a basic switch to connect devices in a GNS3 topology. You cannot configure this switch through a CLI, but you can set the number of ports supported on the switch and other basic settings.


This is a rather simple process, but be aware that your options for configuring Cisco switching while using a c3640, c3660, c3725, and c3745 for this are quite limited. Refer to the switching section of this document to see what features will be unavailable to you.


Notice that slot 0 is still prepopulated with the GT96100-FE Dual FastEthernet adapter, and slot 1 will have the NM-16ESW module preinstalled. Never attempt to replace that GT96100-FE adapter with a switch module, as it will not work. You can add a second NM-16ESW,a NM-1FE-TX single FastEthernet adapter, or an NM-4T serial port adapter to slot 2.


When you add this Etherswitch Router to a topology in the 
Workspace
, there is something you must be aware of. The first two FastEthernet ports (fa0/0 and fa0/1) provided by that GT96100-FE are routed ports only! This is by design, and they cannot be used as switchports. If you left the default NM-16ESW adapter installed in slot 1, the switchports will be interfaces fa1/0 and go through fa1/15:


I am really happy I'm finally part of cisco community , I've been working on packet Tracer since I started studying networks but as y'all know it's a bit limitted so I switched to GNS3, the only problem here is that I can't find cisco equipement images for GNS3 ( routers,switches.. ) 
Can anybody please show me how or where can I Download these images , I'll be grateful :)


Drag the switch icon into the simulation. You can do vlan tagging as an access port, or as a trunk port. No etherchannel though. Alternatively, the 3725 Router has some switching capabilities using the 16-ESW card, however functionality is limited and syntax differs.


Buy VIRL from Cisco's website. It is basically an Ubuntu VM with Cisco routers, IOSvL2 (a switch essentially), ASAv, and a couple other virtual network devices. However, if you're not a student, it's a few bucks. In addition, it is subscription based


GNS3 Full Pack product with built-in images and workbooks. The great thing about this product is that most of the images from Cisco Routers & Switches, Fortinet, Cisco ISE, Cisco FirePower, Cisco CSR, Nexus Switches, XRv Routers, PaloAlto, Juniper, Windows, Linux, ESXi, and other major vendors are installed on this Pack, It has 52 latest images and no need to waste your time to upload images by yourself. 
(

See the images list in PDF here

)
; also it has premade-ready and pre-configured 
GNS3 labs + Workbooks
, You can start practicing your CCNA GNS3 labs, CCNP LABs, GNS3 CCIE labs, GNS3 firewall, and CCIE labs once you have downloaded this product, and it also NO longer needs to be installed. For more information, please watch the below video.


With our GNS3 download, you can access a vast array of Cisco ios images, including Cisco Routers & Switches, Cisco ISE, Cisco FirePower, Cisco CSR, and Cisco ASAv. The GNS3 Full Pack even includes the much sought-after GNS3 Cisco Nexus image.





Our GNS3 Full Pack is compatible with multiple platforms, including GNS3 download for Windows. This cross-compatibility ensures you can run our full-pack images and labs regardless of your chosen platform.


By offering a range of images, labs, and tools, 
Dynamips
 ensures that you have everything you need for your network emulation tasks. Get in

New tracks tagged #gns3