Trong quá trình sử dụng GNS3 [Graphical Network Simulator 3 – một chương trình miễn phí giúp người dùng mô phỏng hệ thống mạng máy tính]. Tôi có tổng hợp các IOS Cisco dùng trong GNS3 để giả lập Router – Switch Cisco, Firewall ASA, IOS XR, NX-OS…
- Cài đặt ASAv trên GNS3 và kết nối bằng Telnet, ASDM
- Cài GNS3 trên Linux không dùng GNS3 VMWare
- Tối ưu và tăng tốc sử dụng VMware Workstation
Các file IOS được phân loại theo từng thư mục, có sẵn các Application bên trong chứa cấu hình yêu cầu tương ứng cho từng đối tượng. Các bạn chỉ cần dùng tính năng thêm Application trên GNS3 và chỉ đường dẫn tới file iOS để sử dụng.
Bao gồm:
– Các IOS giả lập Router: Cisco 1700 – Cisco 2600 – Cisco 2691 – Cisco 3620 – Cisco 3640 – Cisco 3660 – Cisco 3725 – Cisco 3745 – Cisco 7200 – Cisco XRv 9000.
I would like to provide you a way so that you can emulate Cisco switches [L2 as well as L3] and the most important, it's a 100% free solution! Just follow the following steps:
Here is the steps to follow for installing a L3 switch:
1- First you need to download this L3 switch image from the following link:
//bit.ly/c3640-ik9o3s-mz-124-25b
2- Run the GNS3 program after downloading the L3 Switch IOS image file to your computer.
3- Click Edit / Preferences to add a Layer 3 Switch on GNS3. In the window that opens, click on Dynamips / IOS Routers.
4- Click the New button to add a Cisco Layer 3 Switch in the IOS Router Templates window.
5- Select New Image in the IOS Image window and click the Browse button to add the L3 Switch IOS image to your GNS3.
6- After adding the Cisco Layer 3 Switch IOS image, select "This is an Etherswitch Router" in the "Name and Platform" window and click the Next button.
7- Set the RAM value for the Cisco Layer 3 Switch and click on the Next button.
8- Add the NM-16ESW interface for "slot 0" in the Network Adapters window and click on the Next button.
9- You need to configure the Idle-PC value for the Layer 3 Switch to function correctly on GNS3. Perform this operation by clicking the Idle-PC Finder button in the Idle-PC window.
10- Wait while calculating the Idle-PC value for Layer 3 Switch.
11- After setting the Idle PC value, click the OK button. Now you can run and use Cisco Layer 3 Switch on GNS3!
While here is the steps for L2 switch:
1- First download the L2 Switch IOS image to your the computer from the link below.
//drive.google.com/file/d/0B0Fhw3CGskyIZzBjUGpkaW5VRDA/view
2- Run the GNS3 program after downloading the L2 Switch IOS image [vIOS-L2.vmdk] to your computer.
3- Click Edit / Preferences to add Layer 2 Switch on GNS3. In the window that opens, click the New button on the QEMU tab.
4- In the New QEMU VM Template window, type a name for the Cisco Layer 2 Switch and click Next.
5- In the next step, if your operating system is 32 Bit or 64 Bit, select the relevant option.
6- Set the RAM value for your computer's hardware performance for the Cisco Layer 2 Switch.
7- In the Disk Image window, click the Browse button to add the L2 IOS image you downloaded to your computer. 8- After adding Layer 2 Switch to GNS3, click Finish button.
9- To configure the symbol of the Cisco Layer 2 Switch, click on the Switch in the GNS3 / Devices section and click Configure Template.
10- Select "Switches" in the Category section of the Layer2 Switch window. Click the Browse button in the Symbol area and select a symbol for the GNS3 Layer 2 Switch from the window opened and click the OK button to save the settings.
11- Finally, you can increase the number of interfaces in the Network section to configure the port number of the Layer 2 Switch on GNS3.