Sat 30 Aug 2008
How to run multi-pc topology using distributed hypervisors in GNS3
Posted by admin under GNS3 , GNS3 video tutorials
This tutorial will walk you through the process of settting up a distributed GNS3 topology where you can use different external hypervisor engines and run GNS3 topology in much easier and smoother fashion.This helps you utilize resources at hand in an efficient manner by distributing processor load across multiple hardware platforms. Most people use WindowsXP / Windows Vista on their laptop machines. However, for GNS3 and dynagen to perform at their peak, i would recommmend you to use a flavour of Linux which speeds up things to greater extent.
I will be using Ubtuntu 8.04 (Hardy Haron) as Linux Power Horse .I have a 64-bit Intel Machine with Quad Core 2+ Ghz processor coupled with 8Gigs of physical RAM at my disposal. This helps me run full CCIE topology on One machine (using 10+routers ) , multiple vmware instances while conserving resources at my relatively low-end Windows laptop . If you have multiple pc’s , you can add all of them into one GNS3 topology using distributed approach as shown in this tutorial. This will ease-up burden on single pc and make your labs run faster and better.
Cisco Router Keys
For additional help and information , refer to following links/tutorials:
- Communicating b/w local and remote hypervisors by msimone
- GNS3 tutorial at sourceforge.net by Mike Fuszner
- Installing GNS3 in Linux by Josh
Enjoy !!!
If you liked this tutorial ,don't hesitate to buy me a Cup of Coffee today !

(5 votes, average: 4.6 out of 5)


September 1st, 2008 at 8:54 pm
Great tutorial just in time for me.Thanks.
September 2nd, 2008 at 8:21 am
Very nice tutorial. Thanks!!!
September 2nd, 2008 at 6:45 pm
superb tutorial.
September 2nd, 2008 at 6:48 pm
I have a question.Can i use gns3 on mac os x platform the way you showed?
September 2nd, 2008 at 7:04 pm
I am glad you guys liked the tutorial.
@Haris, yes, you can use GNS3 across multiple platforms including Mac OS X. You can download DMG package from GNS3 source website.You can setup multi-pc external hypervisor scenario exactly as shown in this tutorial onto MAC.All you need is to start GNS3/dynamips on MAC and you should be good to go.
Hope this answers your query.
September 4th, 2008 at 8:36 am
Whats the best way to connect a remote hypervisors say FA0/1 to a nic or virtual such as Vmware?
September 5th, 2008 at 12:19 pm
thanks.
September 6th, 2008 at 1:24 am
Nice tutorial.Thanks!
September 15th, 2008 at 8:10 am
Shakir,Ali ,Thanks for liking. You are welcome!
September 15th, 2008 at 8:20 am
@Cas, you can add remote PC’s virtual/physical interface to GNS3 topology by editing .net file and adding remote hypervisors(say Router R1) fa0/0 to the Virtual/Physical interface.
October 16th, 2008 at 3:13 am
Nice video!but tell me one thing ,same steps are followed with other operating system ?a nd the second thing:should i need to install GNS3 on both Pc or a Single Pc
November 16th, 2008 at 11:45 am
[...] How to run multi-pc topology using distributed hypervisors in GNS3 1 views [...]
November 16th, 2008 at 6:45 pm
@usama, GNS3 is platform-independent in sense that once you get it installed and running (on any platform e.g Windows,MacOSX,Linux etc.), rest of steps are same.You may install GNS3 on both PC’s however, that is optional. On second PC, you only require an instance of dynagen/dynamips running to connect to from first PC.
November 19th, 2008 at 7:06 am
Excellent Tutorial..
November 19th, 2008 at 3:21 pm
Hi
I am having ccna exam on 2 dec (with in 10 days). i have installed gns3 and struggling. i have connected 2 routers via serial and configured f/e & s int. my console ports were shutdown and says “”Error: lost communication with dynamips server localhost It may have crashed. check the dynamips server output ——— so on. can any one help me ASAP
November 19th, 2008 at 3:23 pm
can any one help me step by step
November 20th, 2008 at 2:04 am
Remo, logs suggest that your dynamips server has crashed.There can be many reasons for this to happen.I would recommend you to restart it using default settings .if you still have same problem, you may need to hop on over to hacki forum for detailed instructions.
Good luck for your exam.
November 20th, 2008 at 3:34 am
Thank You so much admin.
what do you mean by “hop on over to haci forum”. sorry I am new to this chat or websites.
November 20th, 2008 at 5:51 am
Remo , just google for “hacki forum” and first link will take you there. You can put up your dynamips/gns3/dynagen specific queries there.
Cheerz!