Comments on: Cisco – Dynamips (Router Emulation Software) Installation Tutorial

By: leolink

leolink — Sat, 05 Dec 2009 13:18:54 +0000

i successfully instaled dynamips but when i try to start the .net file it says ” 206 unable to create a vm instance for r1, error loading topology files” please help me

By: Edwin

Edwin — Sat, 07 Nov 2009 04:36:16 +0000

thanks Josh, for that very simple video tutorial on installing and configuring Dynamips.

Edwin

By: Rasheed

Rasheed — Sun, 11 Oct 2009 13:01:27 +0000

Josh

I had problems with my Ubuntu server 8.10 running dynamips after I upgraded to 9.04. I checked your blog as I know peeps had similar probs with – ‘unable to create UDP nio’ & ‘unable to connect to 127.0.0.1:10001′ errors.

What worked for me is that I also use Webmin, rather than using the GUI which would slow my server down a bit. I changed the ports under /etc/webmin/miniserf.conf file to 5000 & restarted the webmin service. I also deleted any of the default synaptic packages that ubuntu would have installed by running ‘locate’ for both dynamips & dynagen. Ran ‘updatedb’ then rebooted.

Everything came up ok… I thought Id share this as it was imperative I get dynamips running. Im preparing for CCIE v4.0. I hope this helps anyone else with the same issues.

Peace

By: paul

paul — Wed, 07 Oct 2009 02:20:11 +0000

for the following error please check my blog post
206 – unable to create UDP NIO

http://crazy4tips.blogspot.com/2009/10/crazy-vpcs.html

By: Adam

Adam — Sun, 04 Oct 2009 01:03:02 +0000

I too am receiving the 206-unable to create vm instance ‘R1′ error. I am running Ubuntu 9.04 64-bit and simply trying to get the simple1.net file working. I even tried using a 3725 image. Here is the .net file:

# Simple lab

[localhost]

[[7200]]
# image = \Program Files\Dynamips\images\c7200-jk9o3s-mz.124-7a.image
# On Linux / Unix use forward slashes:
image = /opt/dynagen-0.11.0/c7200-adventerprisek9-mz.124-24.T1.image
# image = /opt/dynagen-0.11.0/c3725-adventerprisek9-mz.124-25b.image
npe = npe-400
ram = 160

[[ROUTER R1]]
s1/0 = R2 s1/0

[[router R2]]
# No need to specify an adapter here, it is taken care of
# by the interface specification under Router R1

By: Richard

Richard — Wed, 23 Sep 2009 18:19:40 +0000

Hello – I successfully loaded everything on my computer (running Windows XP). However when I went to telnet to either R1 or R2, I would receive
*****************
Connected to Dynamips VM “R1″
************
but then it would freeze.

I checked my CPU usage via Task Manager and realized my computer didn’t have the power needed continue.

I then loaded everything in the exact same manner on a computer (Windows Vista) with much more power and now I receive:
***********************
***Warning: received dynamips error:
206-unable to create VM instance ‘R1′ (same for R2)

***Error: errors during loading of the topology file, please correct them
**************************************

Any ideas a) why the exact same set up would work differently on the new computer or b) how to resolve?

Config file below:

# Simple lab

[localhost]

[[7200]]
image = \Program Files\Dynamips\images\S72033_S.bin
# On Linux / Unix use forward slashes:
# image = /opt/7200-images/c7200-jk9o3s-mz.124-7a.image
npe = npe-400
ram = 160

[[ROUTER R1]]
s1/0 = R2 s1/0

[[router R2]]
# No need to specify an adapter here, it is taken care of
# by the interface specification under Router R1

Thanks

By: Murrfy

Murrfy — Sun, 20 Sep 2009 07:04:29 +0000

Hii there,
Is it possible to change the ports used by the NIO connections between interfaces, which start at UDP 10000 to something else & how to do that.. Plz help !!!

By: Murrfy

Murrfy — Tue, 15 Sep 2009 09:27:47 +0000

Dynagen output :-

Reading configuration file…

*** Error: Connecting R1 s1/0 to R2 s1/0 resulted in
206-unable to create UDP NIO
Press ENTER to continue..

Plz Plz help Josh. Thanx in advance.

By: rajeev

rajeev — Fri, 14 Aug 2009 06:26:29 +0000

pls tell me the steps to install dynamips on vista home basic , i installed the files when i try to run the server it gives me error wpcap.dll file is missing i copy pasted it from diff machine then it give me error packet.dll file is missing

i do not have clear information that what should be the next step

pls guide me

thanks

By: Josh

Josh — Wed, 22 Jul 2009 15:43:19 +0000

Prafull,

Sorry, I can’t help you get software.

Josh