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Creating an IOS router template using the GNS3 VM server
Post subject: 3640 ios. Posted: Fri Jun 12, 2009 2:03 pm. I was able to work with the 3640 ios router under gns3 without any problem. But I was trying a new lab and for some reason, the 3640 does not have any interface. I tried the Configure option and try to add the network cards. In Gns3 by default there is no way of running Cisco switch, but using Cisco 3640 IOS image you can convert your router into switch. There is a module i.e. NM-16ESW module which can be used with Cisco 3640 IOS in gns3 and provide you the switching features in GNS3. 3640 3660 3725 3745 7200. Cisco IOS to use with GNS3 due to licensing issues. GNS3 is meant to be used in a lab environment for testing and learning. This section explains the procedure for creating an IOS router template that uses the IOS image file of the actual router. Step 1: Prepare an IOS image file. You should save the IOS image file to local storage beforehand, and Cisco 3640 series IOS is relatively easy to obtain and use on GNS3.
This section describes the procedure for creating an IOS router template using the GNS3 VM server. Except for the use of the GNS3 VM server as a server, the procedure is almost the same as that for creating a template on the local server. In addition, an IOS image file of the actual router is required beforehand, as in the case of creating a template on the local server.
Please see the following article on setting up a GNS3 VM server.
Step1:Prepare the IOS image file
Save the IOS image file in the local storage beforehand; Cisco 3640 series IOS is relatively easy to obtain and use on GNS3.
See the following article on how to download an IOS image file from a real router.
Step2:Open [Preferences]
Start GNS3 and click [Edit] – [Preferences] to open the [Preferences] window.
Step3:IOSルータテンプレートの作成画面を開く
Open the Create IOS Router Template screen.
Select “Run this IOS router on the GNS3 VM” as “Server” and click “Next” to continue.
Step4:Create an IOS router template
From the Create IOS Router Template screen, specify the necessary information to create an IOS router template.
Path of the IOS image file
Check [New Image] and select the IOS image file to be used for the template from [Browse]. The selected image file will be uploaded to the GNS3 VM. Click [Next] to continue.
Note that when the IOS file is downloaded from the actual router, it is a “.bin” file. When you specify the “.bin” file, the following dialog box will appear. Click “Yes” to extract the file into an “.image” file.
Template name
The default name of the router template is the platform name, such as “c3640”. Specify the name of the template if necessary; it is useful to know the feature set and version of IOS.
RAM size
Determine the amount of RAM for the IOS router you want to emulate; there is a link to Feature Navigator to find out the amount of RAM required for the IOS you want to use.
Modules
Select the module to be installed in the slot of the router. You can also install a WIC if necessary.
Idle-pc
Specify the Idle-pc. Click [Idle-PC finder] to measure the appropriate Idle-pc value. When the [Idle-PC finder] has measured the appropriate value, click [Finish] to complete the creation of the IOS router template.
Step5:Verify the IOS router template
Verify the contents of the IOS router template you have created.