Using GNS3 and Cisco IOU to build routing Exchange experiments-configuration Chapter

GNS3 configuration of the software

In order to let everyone better use of GNS3, the following for you to introduce the specific configuration of the software I hope that the new contact with GNS3 can be faster and better use of GNS3.

Launch the Preferences Settings dialog box as shown in the picture after starting the software:

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Enter the Configuration interface:

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In the General Configuration tab, here are the main two directories, the directory where the project documents are stored, and the directory where the iOS image files reside.

Note: iOS image files are automatically copied to the directory when you create a new analog device and select an iOS file, if the iOS image file is not in this directory.

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Above is the configuration for setting up the network terminal Connection program, GNS3 supports the following connection management software to connect to the console (console) port for configuration:

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As I am personally inclined to use SECURECRT, here is the case of SECURECRT, for example, in the Default connection software list check securecrt and then select the following "set", this time will be in the "Console application Command (console application commands) "automatically generates corresponding parameters, which you can change if you are familiar with the parameters."

It is worth mentioning that it is important to make sure that the program you have selected is installed on this machine and that the installation path is correct. The preset path is specified below the C drive, and I have been modified here to the path of the directory where SECURECRT is located:

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As shown, is GNS3 for the SECURECRT preset part of the parameters, below to do a brief description of the parameters:

SECURECRT supports the following parameter formats:

SecureCRT.exe [Standard options] [protocol-specific options]

/T: Represents open session in tab

/telnet: Represents a connection using the TELNET protocol

%h%: Indicates the host name or IP address

%p%: Indicates the host port number

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GNS3 telnet to the console port of the corresponding analog device using the TCP port number shown below:

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The default TCP port number starts from 2001 to 5000, and you can change the port number of the dynamic range (1025-65535) without conflicting ports.

Configure GNS3 Server

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As shown, switch to the Server Configuration tab to configure the local server and remote server, respectively, describing the role of the local server and the remote server.

The local server configuration option explains:

Enable local server: If you remove the previous tick, the following prompt dialog box will pop up:

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Because the local server is a local resource running dynamips, disabling the local server is equivalent to disabling the dynamips iOS simulated runtime environment. So normally this feature is enabled.

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As shown, if you start a network emulation device with local server disabled, you will continue to connect to the local server http://127.0.0.1:8000 and you cannot start the device.

is a detailed explanation of the "local server" parameters:

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Remote Server configuration parameter explanation:

As shown in the Remote Server Configuration tab, the server list is empty by default and needs to be added manually:

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As shown, I specify the IP address of 192.168.61.128 as the remote server IP address of GNS3, perhaps everyone is more curious about the configuration of the address there is no need to pay attention to the place, the answer is there, as long as the IP address to the IOU virtual machine IP address.

In fact, this place is currently reserved for IOU settings. You can simply think that GNS3 can not only use the local dynamips as iOS running server, it can also designate a remote UNIX virtual machine as a GNS3 server, let the server run the Cisco analog iOS is IOU (IOS Running In Unix). The purpose of the IOU is to enable the use of UNIX systems that occupy a smaller amount of physical computing and storage resources to run Cisco's iOS (including switch iOS) for large and complex network interconnect configuration experiments.

Packet Capture tool Configuration

As shown in the Packet capture tab, you can specify the path and parameters of the grab tool, just note that the capture tool is installed locally and the path is not filled in correctly!

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VPCS configuration of the simulation software

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It is important to note that VPCS needs to be connected to other devices to start, and if you start it separately, you will receive the following prompt:

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dynamips the configuration

Local Server Core program, iOS simulation run environment, keep the default configuration.

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Is the core of the configuration of the analog devices, all of the iOS analog devices are created here, detailed configuration I will be in the use of GNS3 section explained.

IOU configuration Section

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The two configurations, IOU devices and iOS routes, are not very different, and are the core steps of GNS3 building analog devices. Only the former iOS routes is the iOS simulated runtime environment for the local server, the latter IOU devices is for the remote server IOU simulating the operating environment.

VirtualBox configuration Options

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QUEM Set

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Here, the GNS3 Setup section is finished, the following begins a brief introduction of the GNS3 use section.

GNS3 and IOU Introduction: http://jettcai.blog.51cto.com/1447637/1641167
GNS3 and IOU installation article: http://jettcai.blog.51cto.com/1447637/1641222
GNS3 and IOU configuration article: http://jettcai.blog.51cto.com/1447637/1641226
GNS3 and IOU use article: http://jettcai.blog.51cto.com/1447637/1641227
GNS3 and IOU comprehensive article: http://jettcai.blog.51cto.com/1447637/1641248

Using GNS3 and Cisco IOU to build routing Exchange experiments-configuration Chapter