Shulou(Shulou.com)06/03 Report--

Prepare the tool:

1. Computer

two。 Software installation package:

Package Baidu cloud sharing link: https://pan.baidu.com/s/1-nRbwp72NaLZd8BXmWCCMQ

Extraction code: d8xh

What is GNS3?

1. Introduction: GNS3 is a network virtual software with a graphical interface that can run on multiple platforms (including Windows, Linux, and MacOS, etc.). To put it simply, it is a graphical front end of dynamips, which is easier to use and more operable than directly using virtual software such as dynamips.

two。 Function: Cisco network equipment administrator or people who want to pass the Cisco certification exam such as CCNA,CCNP,CCIE can use it to complete the relevant experimental simulation operations. At the same time, it can also be used to virtually experience the Cisco Internet operating system IOS or to verify the relevant configuration that will be deployed on a real router.

2. Installation environment:

1. Host system: Windows10 × 64 Enterprise Edition (other versions are also available)

two。 Client version: GNS3-1.3.10-all-in-one

3. Virtual machine software version: VMware Workstation 14 Pro 14.0.0

Third, the specific steps of installation:

1. The application that finds the software in the folder directly double-clicks to open it.

Click OK in the first few steps, agree, and next, when this interface appears, we need to note that the second and third ones in the installation directory do not need to be installed for the time being. There are ready-made installation packages in the software folder I gave. Later, we are installing when we use it. If checked, it will automatically download from the Internet and affect the installation process.

two。 We need to pay special attention to this side of the installation path, can not appear any Chinese words and spaces, must be all English, you can choose on disk C, or other system disk, this does not matter.

3. After selecting the path, click install to install, and then the following interface will pop up. This is a software that we checked in the previous installation directory. Click next to install it.

4. After the installation process is complete, this small chameleon icon will appear on the desktop, indicating that the installation is ready.

5. After the installation is complete, click next, there will be such an interface option that allows you to pay for the course. Select no to proceed to the next step, and the GNS3 installation is complete. Do not click to start for the time being. We also need to install a wireshark here. We will enter the software folder, find wireshark, and double-click to install.

6. When this interface appears, we need to note that we tick off the second option, which is a shortcut to the desktop, which we will use.

7. In the installation path, the same cannot appear in Chinese. It is recommended to install the default C disk instead of changing the path, because if you change it here, the installation path of the previous GNS3 wireshark will also be changed accordingly, so you don't need to bother to install it directly according to the default disk.

8. After selecting the path, there will be an interface for you to install WinPcap, which we have installed before, so there is no need to repeat the installation here, uncheck the previous box.

9. Click next, wait for the installation to complete, and an icon will appear on our computer desktop.

* * fourth, the use of GNS3 and environmental optimization: * *

1. After the installation is complete, we double-click to open GNS3 and remove the pop-up ads, which will pop up such an interface, this New project (new project) means that on behalf of the project you are about to do, you can choose to save the path so that you can continue to do it later, but this is not necessary, we can choose to do it first and then save it directly.

two。 A brief introduction to the interface function

3. Install system image and optimize the environment

We must optimize the environment of the software here, otherwise the CPU occupancy rate of our computer will be very high, even up to 100%, and it will be very stuck.

① image installation: select the latest image of C3725 in the folder

Select to add an image in the upper left corner, select Dynamips → IOS routers in the pop-up screen, click New in the lower right corner, and select the image to install.

"/ >

After selecting the image for installation, you can click the next step continuously. According to the default form, there is no need to change it. When this screen appears, we need to note that we will not fill in the idle value for the time being. Later we will calculate an optimal value to fill in. If this is not filled, the CPU occupancy rate will be very high, and the computer will be very stuttered. Click finish first.

"/ >

After installation, all the information of the router will be displayed immediately.

"/ >

② environment optimization: let's drag the installed router directly to the blank operating area on the right.

There are two ways to turn on the router. You can click the green start button on the toolbar (turn on all routers at the same time), or right-click and select "start".

Then we use the network cable in the icon bar of the left network cable to connect the two routers (using the same interface), and right-select "change hostname" to change the names of the two routers to "router1" and "router2".

At this time, we turn on the two routers at the same time. In order to reduce the cpu occupancy rate of the computer and improve the fluency of use, we now start to calculate the value of IDel, optimize the environment, right-click and select "Idle-PC". Wait a moment for the computer to calculate the value of IDL. This interface will appear, allowing you to select an IDL value with a "" sign, and click ok. (note: if you find out the value that is not taken, select the lowest value. Or do it again. I didn't do it the first time, but I came out the second time.)

4. At this point, the installation of our GNS3 software is complete, and later blogs will describe how to use the router and switch features of GNS3.

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.