Gns3 DownloadIOSv on GNS3 with free IOS 1. Im not sure if I correctly understand your Give it a shot. IOSv on GNS3, I have already tried it and it works fine so far if you refer to KVM, well as far as I know, Cisco uses RHEL KVM. I prefer Ubuntu, and installing all the tools needed for KVM seems complicated and usng it seems to be. When I find some time, Ill give it a try. However, IOSv can run inside GNS3 with Qemu without the KVM mode. Download Cisco IOS for GNS3. Working Cisco IOS for GNS3. Can you please provide the cisco 3750 ios image for gns3. The closest to a switch running in GNS3 would be IOU. In regards to obtaining router IOS software the only legitimate way to get an image is from Cisco. Cisco StackWise 3750 Stacking Issue. We found a really weird issue with a version of IOS on our Cisco 3750 stack. Cisco ASA 8. 4 on GNS3 1,552,371 views. Switches in GNS3 GNS3vault. Ive been getting questions about switches in GNS3 so decided to write this article explaining which switching protocols you can or cannot use in GNS3. First of all, its impossible to run switches in GNS3 That being said the option that we do have is using the NM 1. SW switching module in a router which gives us some capabilities. IOS_on_UNIX_CLI.png' alt='Download Cisco Ios For Gns3' title='Download Cisco Ios For Gns3' />Now you are probably wondering which capabilities so lets have a look what we can do. You might have noticed that in the newer versions of GNS3 theres a Etherswitch Router. This is a Cisco 3. NM 1. 6SW module so only the icon is different. Now lets see what switching options we have. Vlan interfaces You can create vlan interfaces which can be used as the default gateway for clients. For example interface vlan 1. IP address 1. 0. 1. IP address 2. 0. 2. This is the same as you would do on any L3 switch like the 3. Trunking Trunking is looking good, the only encapsulation type is 8. Q which is fine no ISL. But you are able to setup a trunk connection just fine. There is no dynamic auto or dynamic desirable mode so now way to lab this. Vlan Trunking Protocol VTP VTP is working just like on a switch, you can configure the VTP domain, mode like server client transparent, pruning and passwords. Etherchannel If you want to learn etherchannel you are better off with some real switches, you can enable it but theres no Lacp or Pagp support. Bannatyne Reading Program. Spanning Tree You can learn the basics of spanning tree, see which ports are in blocking and forwarding mode but dont expect any fancy stuff. To be honest you are better of with real switches to study spanning tree if you ask me. Switched Port Analyzer Should be possible but to be honest I didnt fully test it yet. The commands are there so I believe it should work just fine. Storm Control Storm control is there and seems to be just fine. Quality of Service QOS The switch commands for Qos are there like mls qos and you can configure the mls qos maps. This looks cool to me So what do I think of it To be honest I like it a bit better after researching all the commands and what the options are. If you want to play with vlans or vlan interfaces theres nothing wrong using the NM1. SW module. Trunking is fine, you can do everything that you want as long as you dont care about ISL. VTP is the same thing as on a real switch so no need for real hardware here. Etherchannel I dont like since theres no Lacp or Pagp support, the same for spanning treeyou lack a lot of commands and theres no way to switch to other modes like MST which you can do on a real switch. SPAN is excellent and I also like Storm Control and the Quality of Service commands. So what should you doGNS3 If you have no budget and are studying for CCNA, just use GNS3. If you do have some money to spend get 2 or 3 Cisco 2. If you are studying for CCNP SWITCH just get yourself a 3. Its not too expensive and using a real switch is better. For the CCIEdo yourself a favor and invest in 2x 3. Youll be spending a LOT of time studying and its better to spend your time at switches than the NM1. SW module. If you want to know all the options for the NM1. SW module check out this article on the Cisco website http www. USdocsios1. 22t1. Next time ill be writing an article how to connect your real physical switches to your GNS3 topology.