Windows GNS3 Installation and basic usage guide

1, GNS3 Introduction

GNS3 is a graphical network virtual software that can run on multiple platforms (Windows,linux,mac OS). We can use it to learn about Cisco's certifications, or to verify the configuration that will be deployed in a production environment. It simulates running Cisco and Juniper's network devices, including routers, switches, firewalls, and more.

For more detailed information, please visit its official website. http://www.gns3.net/

Q: Besides GNS3, what are the emulator software for network devices?

A:cisco Packet Tracer,iou and so on. The Cisco Packet Tracer analog iOS feature is not complete, but can see the appearance of the device shape. The IOU is the most advanced in the simulator, but only runs under the Linux system. The GNS3 is simple to use, and the simulation functions are identical for beginners.

How does the Q:GNS3 simulator work in general?

A:GNS3 is primarily a hardware platform for analog network devices, which requires downloading the iOS system of the relevant device model and then loading it into iOS. Log on to the console port using Telnet native (127.0.0.1). Similar to VMware Workstation, emulate the hardware platform and then install the appropriate operating system.

GNS3 Official Documents This description: Use GNS3 you firstneed to provide your own copy of a network operating system, like Cisco IOS, PIX, ASA, IPS.

What Cisco network devices does Q:GNS3 currently support? What is the relationship between GNS3 and iOS?

A: Each iOS can only be used on a network device of a certain model series on a certain platform. At present GNS3 mainly supports Cisco1700, Cisco2691, Cisco3600, Cisco3725, Cisco7200 and other models. The routing part has been simulated completely, and the switching part is simulated by loading the switching module on the router. In addition, GNS3 supports the simulation of firewalls and intrusion detection devices, as well as juniper Juniper Networks devices.

2. Installation

Special Note: throughout the GNS installation setup process, all paths related must be in English (ASCII) and cannot contain Chinese .

Otherwise the error, like this:

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Approximate steps for GNS3 installation:

1. Download GNS2 Installer, Cisco's IOS,SECURECRT

2. Installation

3. Configuring the GNS3 parameter

All of these software can be downloaded to the 51cto. We can look for it. The software list is as follows:

• Gns3-0.8.7-all-in-one.exe

• C3640-JK9O3S-MZ.123-10 (All). bin

• SECURECRT and Securefx v7.2.5 x86 x64 build 524

The installation process has nothing to say, just next. However, it is important to note that all installation paths cannot be in Chinese , and GNS3 integrates many software, it is recommended to install it by default (Superputty is recommended).

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During the installation process, you may be prompted that some software is already installed, continue installation, and click Cancel. The latest version of the GNS3 in the installation process requires networking to download the relevant software, please wait for the installation to complete.

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3. Configuration

Double-click the GNS3 shortcut, close the prompt window, go to the main program screen:

1, modified GNS3 interface language for the Chinese

Edit-Preferences ...

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In general, select language as "China (CN)", then click Apply at the bottom right and then close the program to see the Chinese menu when you open it.

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2. Path setting

Edit-Preferences-general-path

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Then, click "Apply".

3. Dynamips setting

Edit-Preferences-dynamips-settings

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Here is the key, the dynamips test, when the "successful start" word, indicating that GNS3 installation success.

4. Capture Settings

Edit-Preferences-Capture-settings

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3. Using GNS3

First, we're going to download the Cisco IOS network operating system and then GNS3 load the iOS image to run it. Here, I found a URL to share:

Links: http://pan.baidu.com/share/link?shareid=3761182530&uk=3191644890 Extract code: ms0t

We open the GNS3 and then click on the router icon to see

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As can be seen, GNS3 currently only support the above models, but also Gray is not optional. Since we did not load the corresponding model of Cisco IOS, let's show you how to load it.

Here I assume you have downloaded the iOS image, OK, start

1. Loading iOS

Edit-iOS and Hypervisors

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Then, specify the corresponding image file path

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Note, remember to click "Save", and then go back to just the interface, we can see, Router c3600 Optional.

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2. Add Module

We know that Cisco routers have a modular structure with additional slots on the routers that can install various modules to provide more ports or other things, and the sad thing is that when you need to add more modules, you have to pay for each module, that is, the module charges.

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We can drag and drop the corresponding device (router or switch) to the workspace, then right-configure it and select the appropriate module in Solt.

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3. Connection

With routers we can build networks, and routers usually connect to other devices via cables. On the left there is a RJ-45 crystal head icon, you can connect, this is easy to understand and operate, so there is not much to say.

4, Calculate the idle value (more critical)

Before doing the experiment, we need to calculate the idle value of the GNS3 simulation to reduce the CPU occupancy rate, or you will find that your computer's CPU usage is soaring.

Select Device-Right-start, then right-Idle PC

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5. Console

Select Device-Right-Console

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OK, here we are basically able to use GNS3. More advanced features in the subsequent blog post in writing.

This article is from the "Share Your Knowledge" blog, so be sure to keep this source http://skypegnu1.blog.51cto.com/8991766/1547841

Windows GNS3 Installation and basic usage guide