2-3. gns3 advanced operation multi-pc configuration step 1. select

Ver 2009/Aug/14 Fri 13:05 pm. Young, To be a practical CCIE during 6 years

2-3. GNS3 advanced operation

STEP 1. Select external hypervisor

Multi-PC configuration

STEP 2. Import the additional IOS Image

The hypervisor can control the IOS image and GNS3 application via console program.

(ex. Secure CRT…)


STEP 3. Check external IOS imageSTEP 4. Create Network connection


Main PC

Sub PCCheck the IOS Image both of the local and

remote pc IOS image file location.


STEP 5. Create IOS image directory on the remote pc


You must create same IOS image and Working directory between Main and Sub PC.

When you create the directory, check the exact name and path both of the main and sub pc.


STEP 6. Create Dynamips new process


STEP 7. Edit new Dynamips start file

You should copy and edit previous dynamips-start.file for your own external-processor.

You should change the process id For your new Dynamips

If necessary, you should create several process for your configuration.


STEP 8. Double check the default image check box.


The default option is checked default image.

However, if you select the IOS image file you can see the actual configuration. Make sure it


STEP 9. Select IOS image when you

Install the new platform.


STEP 10. Start the external processor on the remote pc

Upper case is the negative … example !

When you use multi-pc configuration, you should

use the specific ip address for the IOS image path.


STEP 11. Select and run the remote router


When you check the running status of the remote router. It will be helpful for you that

if you check the remote router CPU resource via remote desktop function.


STEP 12. [Option] Trouble shooting procedure.


When you meet the error of the remote HyperVisor, you should check below check lists.

1). GNS3 external hypervisors port number -->make sure !!! the exact number of the remote pc Dynamips process id !!!ex 7201 <--> 7211 , 7200 <-->7210 don't confuse !

2). In an IOS IMAGE - unclick the Default image for thisplatform when you double click "the each IOS Image location"

3). Run the remote PC hypervisor - exact process number .4). Do not use “localhost” name for Hypervisor

because localhost ip address is 127.0.0.1 you should specify the ip address of your Main PC.

5). Make sure the difference between local and remote Hypervisor of the Base UDP port and console port

6). Check the task manager for the GNS3 and reboot the pc 7). Create same IOS image and Working directory between Main and Sub PC


Session 3_1 Multi pc and GNS File import example

Share the process resource

GNS3 Local server

GNS3 Remote

Process 7200

Process 7203


1. Setup the multi hypervisor for the Main server


2. Setup for the IOS LOCATION FOR Main server


3. Start the hypervisor for both Main and remote server

Main Server Remote Server


Thank You.I wish it will be helpful for you.

2-3. gns3 advanced operation multi-pc configuration step 1. select

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