Cisco – Dynamips with Microsoft Loopback Interface
Posted by Josh on Sun 1 Apr 2007Categories: Cisco , Cisco Routers , Dynamips , virtualization - [68] Comments
This tutorial is part 3 in a series of basic Dynamips tutorials. This particular tutorial demonstrates dynagen’s ability to create a virtual switch that allows your virtual routers to communicate with a PC via a loopback interface.
Part 1: Dynagen Installation
Part 2: Dynagen Basic T1 Configuration
Click Image to play tutorial:
http://tech.scottp.net/index.php/2006/10/01/use-windows-loopback-with-cisco-router-emulator/
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April 2nd, 2007 at 9:29 am
This is very good! Very helpful! Thanks for sharing.
April 4th, 2007 at 5:50 pm
I think i’m going to fall in love with this Dynamips emulator, because it emulates real cisco ioses. I think is better for anyone learning CCNA or CCNP in using this dynamips emulator than using Boson simulation and Visual Network simulators in the long run. I just hope that my PC P-4 2.4 Ghz with 2G of ram can handle more than a few of these virtual equipments in a network with no problem. If it does I’m going to love it. Thanks for sharing your knowledge.
April 8th, 2007 at 3:58 pm
hello,
What application do you use to make these tutorials made in?
Great tutorials by the way.
April 8th, 2007 at 10:08 pm
Can you create a video scenario using Dynamips (virtual routers) communicating with a real cisco router that connect to your pc? Thank you in advance.
April 8th, 2007 at 10:47 pm
Follow this tutorial:
http://www.blindhog.net/cisco-dynamips-virtual-wan-with-ethernet-connection/
It shows you how to configure a dynamips virtual router to communicate with the local ethernet network through the PC’s NIC. If you configure your virtual router in this way, it should be able to communicate with a real router.
April 14th, 2007 at 8:59 pm
[...] I just saw a great site with some networking how-to videos – one of them was based on an article I did on Windows Loopback configuration and working with Dynagen/Dynamips. Article printed from scottp.net – Tech Site: http://tech.scottp.net URL to article: http://tech.scottp.net/index.php/2007/04/14/great-networking-how-to-videos/ Tags [...]
June 11th, 2007 at 8:13 am
My loopback in Vista is not working, this makes it worse because the configuration for the switch will not be complete. When I run the Network device list, this is the output with loopback created
Network device list:
PCAP: unable to find device list (No interfaces found! Make sure libpcap/WinPcap is properly installed on the local machine.)
Use as follows:
F0/0 = NIO_gen_eth:\Device\NPF_{…}
Press any key to continue . . .
Can you help with this?
Regards,
Joe
June 11th, 2007 at 8:50 am
Do you have winpcap installed?
June 18th, 2007 at 1:00 pm
Man great job!!!
Keep up the brilliant work, really this helped me alot in understanding and configuring real cisco equipments.
I want to learn how to configure AAA server using dynamips running on my local machine can i do so???
July 31st, 2007 at 12:31 pm
Wowow… I’s been struggling with dynamips. You saved my life!
August 17th, 2007 at 1:53 am
Not Able ping loopback interface in windows 2000 machine.
rpcap://\Device\NPF_{4A187DDC-2F10-4516-93BD-DA656E54BE33} : Network adapter
‘MS LoopBack Driver’ on local host
.Net File
[[router R3]]
model=3660
F0/0=NIO_gen_eth:\Device\NPF_{4A187DDC-2F10-4516-93BD-DA656E54BE33}
=> ver
dynagen 0.9.2.042807
dynamips version(s):
localhost: 0.2.7-x86
Can I know if I am missing something?
August 17th, 2007 at 5:14 am
I do not see any configuration image for 3660 routers. Config should looks something like this…
[localhost]
[[3660]]
[[router R2]]
[[router R3]]
model=3660
F0/0=NIO_gen_eth:\Device\NPF_{4A187DDC-2F10-4516-93BD-DA656E54BE33}
It also does not look like a Loopback adapter has been installed on the Workstation.
August 19th, 2007 at 4:50 pm
I included all the details in the config.
This is how my actual config looks like -
[localhost]
[[3660]]
image = C:\Progra~1\Dynamips\images\c3660-ik9s-mz.123-22.bin
# On Linux / Unix use forward slashes:
# image = /opt/7200-images/c7200-jk9o3s-mz.124-7a.image
# npe = npe-400
ram = 128
confreg = 0×2102
[[ROUTER R1]]
model = 3660
s1/0= R2 s1/0
[[router R2]]
model = 3660
s1/1 = R3 s1/0
[[router R3]]
model=3660
F0/0=NIO_gen_eth:\Device\NPF_{4A187DDC-2F10-4516-93BD-DA656E54BE33}
I installed the loopback adapter too. This is the address I got from device list.
August 31st, 2007 at 8:48 pm
[...] This tutorial will show you how to add a tap interface to your linux machine and how to communicate with your dynamips router session via the tap interface. In a previous tutorial, I used a loopback interface on a Windows XP machine to accomplish the same goal. [...]
September 4th, 2007 at 12:34 pm
Can I add a second loopback interface and connect to R2 like you do with R1?
September 4th, 2007 at 3:26 pm
I’ve never tried it…try it and let us know what you find out. I have always used the live network to connect to R2.
September 6th, 2007 at 5:13 am
I did all the steps and worked. But when I was repeating the test, I saw that I configured by mistake the network connection with the ip (192.168.200.1) instead of the loopback. When I configured the loopback, it didn’t work anymore. I couldn’t ping the router. If I configure the network connection, it works. Which mistake could I have done?
Thanks.
September 7th, 2007 at 6:54 am
Yes, it’s work. If u have any problem, restart the computer and the second loopback interface will be up!
September 7th, 2007 at 8:50 am
Thanks Pablo!
September 11th, 2007 at 3:32 pm
i tried it on win2k and it doesn’t work. The state of the switch is n/a. Anyone has clue how to make it work on win2k??
September 30th, 2007 at 6:19 pm
When I configured the loopback, it didn’t work anymore. I couldn’t ping the router. Which mistake could I have done? What is my problem, my interface lookback is up????
Thanks.
September 30th, 2007 at 10:43 pm
You might try to reboot your pc.
October 2nd, 2007 at 3:35 am
It’s really nice to find such materials, amazing. Thank u very much.
October 18th, 2007 at 8:14 am
Hello,
To whom it may concern. I am struggling with dynamips…I mean STRUGGLING!!!…I wanted to know if I could get some assistance, even willing to shell out some dollars I have my configs etc…just can’t get it right something critical is not right, so I would like if someone could look over them to let me ko what is wrong….PLEASE HELP
Ahmad
October 18th, 2007 at 3:17 pm
Hi, Can I connect a windows 98 SE in to dynagen ? it is not showing any loopback interface in Microsoft tab. please help..
Thanks,
Reghu
October 25th, 2007 at 1:29 pm
Hi,
I have a problem getting my loopback connected in vista. It is showing in the network connection area, but can’t get in network device list (hence can’t get the the number) ?
Any help/advice please.
October 26th, 2007 at 8:56 am
Hi,
I have a problem on running the virtual router.It has error message as:could not communiocat with dynamips server localhost”
end I had opened the “Dynamips virtual service”
any help please?
ivan
email: ivan@moreshoeparts.com.cn
October 28th, 2007 at 10:38 pm
@Dan
I have not installed Vista yet. I converted my home machine from a pirated version of XP to Ubuntu 7.10 and so far, I have been very happy. I don’t have plans of purchasing or pirating Vista.
My work PC is still XP and I don’t have a good reason to upgrade. Once I get a chance to use Vista, I am sure I will post tutorials for using Dynamips with Microsoft Vista.
If someone would like to send me a legal copy of Vista, I will get tutorials out sooner.
October 28th, 2007 at 10:40 pm
@Ivan
Have you started the dynamips host batch process before using dynagen?
December 9th, 2007 at 12:57 am
Connecting dynamips routers with loopback interfaces in windows 2000 dosn’t work !!
I work around this problem by installing vmware, connecting the virtual router with vmnet1 and bridging the loopback interface with vmnet1
January 11th, 2008 at 4:22 pm
[...] In a previous tutorial, I showed you how to use a windows loopback interface to connect to your dynagen/dynamips lab. [...]
January 21st, 2008 at 1:12 pm
Those who have problem with vista, try to install wincap 4.0.1 dont install wincap 4.0.2. i used latest gns3 all in one winxp set up. It worked for me without any problem. It worked for me in vista ultimate
January 21st, 2008 at 9:16 pm
Thanks for the tip!
February 7th, 2008 at 1:56 am
Is it duable with GNS3? I couldn’t get it to work no matter what…
February 7th, 2008 at 8:41 am
Here is the tutorial for GNS3
http://www.blindhog.net/how-to-integrate-a-microsoft-loopback-interface-with-gns3/
March 11th, 2008 at 7:50 pm
Hello!
Thanks for your sharing knowledge about Loopback configuration for Dynamips!
But, when I look into Loopback Properties, I see that it works only onto speed of 10 Mbps!
How can I increase the Loopback Speed up to 100Mbps like in the FastEthernet medium!!!
Thanks you very much!
March 12th, 2008 at 4:15 pm
Hi
I do not know how I can instal a cisco router with interface E1, FXS or FXO.
please, can you help me?
thanks from spain
March 12th, 2008 at 4:23 pm
I am not sure about the E1 interface but I know dynamips does not support voice cards.
March 13th, 2008 at 1:38 am
Hi
Thanks Josh.
I will be investigate for E1 interface.
I hope new dynamips for support voice cards.
Josh, you know where I can find information about E1 for dynamips?
Best regards.
March 14th, 2008 at 12:57 pm
I love you man !!!!!!!!!
Thanks
March 22nd, 2008 at 11:32 pm
hi
I am using windows vista home premium, And I have a priblem, I’m unable to get network device list.Winpcap is properly installed.
April 2nd, 2008 at 11:50 am
I am a new user to GSN3. I have installed GSN3 new version on windows XP. I have also added the IOS image to GSN3.
I am unable to get the console of the router. when I give command on GSN3 Console R0 the telnet screen comes with a message telnet to loaclhost….. and goes away.
I ahve configured it as per the settings on this bolg http://www.subnettingmadeeasy.blogspot.com/
Can any one please suggest what I SHOULD DO TO RECTIFY IT and establish the telnet session.
April 2nd, 2008 at 12:26 pm
Here are my gns3 tutorials…
http://www.blindhog.net/category/gns3/
April 23rd, 2008 at 1:28 am
[...] MS Loopback Tutorial GNS3 – Pix Emulator Tutorial [...]
April 30th, 2008 at 1:44 am
Thanks for making it downloadable, it’s very useful.
May 6th, 2008 at 12:26 am
[...] a physical interface on my PC. Maybe I will create a tutorial for the above scenario. Stay tuned. MS Loopback Tutorial GNS3 – Pix Emulator [...]
June 17th, 2008 at 5:12 am
To those who are using Vista.
I have encountered the same problem before.
I can’t find the Microsoft Loopback Adapter using the “Network Device List.cmd”
Luckily I have the solution (that works for me):
1. Click your Start Button
2. type in cmd.exe
3. Right click on the result
4. Click run as administrator
(Yes, there are some process that won’t run correctly unless you are an admin)
5. Go to the dynamips folder
C:\> cd “Program Files\Dynamips”
6. Run the Network Device List.cmd
7. (Just in case it didn’t work) Reboot
8. Try again from step 1
Good luck
July 23rd, 2008 at 8:47 am
Hi,
I am facing trouble to bring my Virtual router up with Dynamips. I follow your video and do exactly you said there.
I am pasting “basic-router.net” file for you and a snap shot from the Dynamips console panel.
===========================================
basic-router.net
===========================================
# Simple Ethernet Switch lab
autostart = false
[localhost]
[[7200]]
image = \Program Files\Dynamips\images\c7200-js-mz.122-46a.bin
# On Linux / Unix use forward slashes:
#image = /opt/7200-images/c7200-ik9o3s-mz.124-5a.image
npe = npe-400
ram = 512
[[router R1]]
s1/0 = R2 s1/0
f0/0 = SW1 1
[[router R2]]
[[ethsw SW1]]
1 = access 1
2 = access 1 NIO_gen_eth:\Device\NPF_{C81533A0-06C6-4B25-AFB3-D6C5B507E3C1}
=========================================
Dynamips console results
=========================================
Skipping stopped device: R1
=>
=> ver
dynagen 0.9.2.042807
dynamips version(s):
localhost: 0.2.7-RC3-x86
=> ?
Documented commands (type help ):
========================================
capture exit help import push resume shell stop ver
clear export hist list py save show suspend
console filter idlepc no reload send start telnet
=> telnet R1
Skipping stopped device: R1
=> telnet R1
Skipping stopped device: R1
=> telnet 10.10.10.1
*** Error: unknown device: 10.10.10.1
=> telnet R1
Skipping stopped device: R1
=> telnet R1
Skipping stopped device: R1
Only difference that I have is instead of an image file having “.image” extension, I do have a image file having “.bin” extension. I am not sure that this is the problem or not. Need your help mr. Admin.
Regards,
Mansur
July 23rd, 2008 at 9:04 am
mansur, I see two possible mistakes
1) you are missing a c: in the path of your router image
2) you are trying to console into the router before it is started. Try ‘start R1′ before attempting to connect to it.
Josh
July 23rd, 2008 at 9:41 am
Hi Josh,
Thanks for your reply.
I added “C:” to my image path. I am not clear about your second point. I did start “dynamips-start.cmd” or dynamips before executing my “basic-router.net” file.
But having same problem
=> telnet R1
Skipping stopped device: R1
=> telnet R2
Skipping stopped device: R2
=> telnet SW1
=>
How to start my R1 router from Dynamips?
waiting for your reply.
Thanks again,
Mansur
July 23rd, 2008 at 9:47 am
Thanks a lot Josh.
I found out my problem and fix it.
August 18th, 2008 at 9:25 am
GREAT THAX
IT IS POSSIBLE FOR MORE THEN ONE LOOPBACK INTERFACE ON THE SAME SWITCH IF IT IS POSSIBEL HOW TO CONFIGURE PLS EXPLAIN ME
August 22nd, 2008 at 9:18 pm
IFX,
You can go through the same steps to create several loopback interfaces.
Josh
September 7th, 2008 at 1:06 am
Awsome it is….!!!really gr8 work.Thnx a lot……..
SAndeep
November 14th, 2008 at 10:18 am
Hi, I’m having problem integrating with win2000. I have used physical interface to bind with a virtual interface of the R1. But can’t ping the router from the host machine. Surprisingly, I can ping the router from any other device in the LAN, except the host win2000 machine.
Any idea please?
November 17th, 2008 at 11:43 am
Mijan,
Not sure. I haven’t used win2000 in a long time…
You might try the hacki forums.
http://7200emu.hacki.at
Josh
January 19th, 2009 at 4:52 am
Josh
I work with your tutorial about loopback interface but i get problem that i can ping and telnet router from cmd, but i cant ping loopback interface from the router would u please help me? i am using winxp.
my email is dullakp@yahoo.com
January 19th, 2009 at 7:10 am
Hashil,
Your problem is the windows firewall. Disable it and you should be able to communicate from the router to the PC.
Josh
February 2nd, 2009 at 4:03 pm
Hi mansur,
I have the same your problem, can please tell me how you fix it.
I appreciate that
=> telnet R1
Skipping stopped device: R1
=> telnet R2
Skipping stopped device: R2
=> telnet SW1
May 22nd, 2009 at 9:30 am
Hello all,
Problems with vista are down to windows firewall and the ACL settings in control pannel under user accounts (that crap popup thingy)…
May 27th, 2009 at 8:55 pm
Not sure what’s going on, but when I set up the loopback GNS3 works great. However, nothing else does. The PC can’t access the real internet. When I do a ping or traceroute, I see it trying to go out the loopback interface. Any ideas on how to fix that?
March 31st, 2010 at 2:52 am
Hi
I am working with GNS3 . Today I hit the export from file column file > export .
But after that I could not configure even one router ,because it says ” HYPERVISOR IS ALREADY RUNNIG ON PORT 7200″ . I addressed this with manual hypervisor. but can you tell me how to do something to ignore that anoying message and still work from port 7200the , same as before ? I mean is there any thing to delete or … ?
thank so much.
Take care
March 31st, 2010 at 2:55 am
hi
how to use hypervisor manager again , when the GNS3 says :”HYPERVISOR IS ALREADY RUNNING ON PORT 7200 “.
THANKS.
March 31st, 2010 at 12:18 pm
Manie,
Are you using Linux or windows?
Josh
March 31st, 2010 at 10:12 pm
Windows .but I couldnt find anything in Task manager , Can you say the exact name of service in task manager or other way to address this ? I am usin XP sp2.
Thank you so much.
May 23rd, 2010 at 10:05 am
[...] that tell how to do this. Blindhog.net has an excellent video on how to setup a Loopback adapter. – http://www.blindhog.net/cisco-dynamips- … -tutorial/ STEP 2 The next phase is to bridge the Loopback adapter with your wireless adapter. This is the [...]
August 15th, 2010 at 2:19 am
When I drag a router into screen ; it says hypervisor is already on port 7200 . I close gns3 and ran task manager , but no process related to dynamips such as dynamips-wpx.exe was there . My workaround was to use from external hypervisor . but in external hypervisor the first router that I put in screen is R1 not R0, and how can I use from hypervisor manager again ?
(I am using win xp SP2)
Thanks.
August 27th, 2010 at 4:21 am
I was able to set up a Windows VPN using XP home. However it is not terribly reliable. I would recommend a product/service called Hamachi from a Log Me In Inc. It is an excellent zero configuration VPN, free for home use but they do charge for commercial use. I use their remote control product, Logmein, extensively. It too is free and an excellent remote control product. Hope this helps.