![]() Select the “FastEthernet” interface configured by default and click the “Next” button. You can add interfaces for the Router on the “Network Adapters” page. Continue by clicking the “Next” button to accept the default 512 MB RAM value. In the “Memory” page, you can configure how much RAM the Cisco Router will use in this window. On the “Name and platform” page, select the Cisco Router platform and click the “Next” button. On the “IOS image” page, click the “Yes” button to copy the router IOS image to the default location. After adding the IOS image, click the “Next” button. In the “Select an IOS image” window that opens, select an IOS image that you downloaded to your computer and click the “Open” button. In the IOS images window, click the “Browse” button on the “IOS image” page to add the Router image. To add a Cisco Router IOS image, select “Add an IOS Router using a real IOS image” from the “Add virtual machines” page. After selecting the Local Server option, click the “Next” button. Select Local Server in the Setup Wizard window. This is asking you to install a virtual router or appliance and gives you the options to do that.After running GNS3, the first opening of the program is as follows. Installing IOUĪs soon as you finish creating the GNS3 VM, the following window will appear. Once you have the IOU image for L2 and 元, continue with the following steps. In case it isn’t, the Internet is full of stuff, you can easily find it by googling. If your company is entitled to that, just use it. This is copyrighted material, thus I can’t give it to you. To install that, you need to have the Cisco IOU images: one for L2 and one for 元. In fact, IOU supports both L2 and 元 devices (including switches!). As a result, we can efficiently run it on our normal CPU, without having to worry about ASIC emulation. It is a reworked Cisco IOS that runs on top of Unix, as the name says. IOS on Unix is what we are going to use our VM for. At this point, you are going to have a recap window, where you can click Finish. You can continue the setup-with no problem. If you see this error “GNS3VM: DHCP must be enabled on VirtualBox host-only network”, don’t worry. As a result, you will see an orange box icon next to the file. If you installed VirtualBox correctly, your PC knows that it has to open OVA files with it. It is like receiving a physical PC with all the needed software already on it. Each file contains all the details for a virtual machine: its software, virtual disks, and resource settings. OVA is a special file format that contains Virtual Appliances. You can simply un-zip it with our favorite tool (like 7zip), and you will find an OVA file in it. ![]() This download will give you a compressed file. In case you haven’t, or you are confused about it, just check our latest article about integrating GNS3 with VirtualBox. Since this tutorial will show you the steps to do that with VirtualBox, you need to have it installed. Therefore, you can simply select VirtualBox. However, in our last article, we have already used VirtualBox since it is the only free option we have. Click on the highlighted link to download the VM.Īt this point, the site will propose several options: VirtualBox, VMWare Workstation, and VMWare ESXi.
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