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 Post subject: host to gns3 issue
PostPosted: Sun Sep 14, 2014 12:21 am 
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Joined: Sun Sep 14, 2014 12:13 am
Posts: 9
Ello all. New memeber here. Just installed gns3 and have a simple network running. I have my idle pc value and all the good stuff setup. I have practiced with this for a few hours before posting. My first network was 3 routers running eigrp. it worked great.

Now i am wanting to add a vmware host to it. Here is what i have done. Created a new network with one router and single ip on fa0/0. I used the cloud device and selected my vmnet2 connection. started the vmplayer host and made sure i had a ip in the same subnet. Tried to ping and no go. All the things were correct in router and cloud. I then stopped all devices, changed the cloud to a host device and selected the vmnet2 connection. Now ping works, however, i tried to nmap the router but realized it wouldnt work with in a few seconds. so i did a ctrl+c and then tried a ping and now pings are not going accross. BUT if i stop the devices, turn them back on, pings work. so something is cause the router or gns3 to stop working in the background.

any ideas?

thanks

Also, how can i get cloud devices to work?

thanks




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 Post subject: Re: host to gns3 issue
PostPosted: Sun Sep 14, 2014 2:15 am 
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Joined: Sun Sep 14, 2014 12:13 am
Posts: 9
Ok, tried some more tests and it seems strange. After each nmap scan, no matter what the results, communiation with the router in gns3 stops. But once i do a fast power off and power on, it works again, but then i try nmap, get positive results back, ping stops working and all communication dies... so weird. The host machine is backtrack5


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 Post subject: Re: host to gns3 issue
PostPosted: Mon Sep 15, 2014 10:19 pm 
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Joined: Sun Sep 14, 2014 12:13 am
Posts: 9
Here is a video showing the issue. thanks

https://www.youtube.com/watch?v=sV4xzcQ ... e=youtu.be


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 Post subject: Re: host to gns3 issue
PostPosted: Mon Sep 15, 2014 10:42 pm 
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Joined: Sat Oct 11, 2008 1:41 pm
Posts: 2668
Location: Canada
Interesting problem... just to square the issue, I would try the following:

- Shut down any firewall that may be running on your host.
- After loosing the connection, try to delete the link between the router and the cloud and add it back.
- Use VirtualBox instead of VMware to see if that make a difference.
- Run another IOS image/platform.
- Use GNS3 1.0 beta2

Thanks,

_________________
Jeremy, GNS3 Programmer & Benevolent Dictator for Life.


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 Post subject: Re: host to gns3 issue
PostPosted: Tue Sep 16, 2014 4:25 am 
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Joined: Sun Sep 14, 2014 12:13 am
Posts: 9
Ok, i will try all those options and see what happenes. im downloading VB right now. But i will try the others first before i install all my hosts again. haha

thanks

EDIT

some other strange issue as well. I rebuilt the entire network and no pings going across at all from host to router, BUT as soon as i sent a ping from router to host, the host came alive and started to ping. Its like the host is not sending any keep alives to the router BUT once the router sends data to the virtual net card, it wakes up and says "oh hey, i have data now"

still using vmplayer at the moment untill i figure out how to get gns3 beta 2 and try the other fixes


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 Post subject: Re: host to gns3 issue
PostPosted: Tue Sep 16, 2014 5:05 am 
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Joined: Sun Sep 14, 2014 12:13 am
Posts: 9
Ok, it seems that if i delete the cable whilst the router is running, and then reconnect it, the pings start up again. very strange. I am still using vmplayer 6.0.1 build-1379776. Backtrack5 is my host machine. i have downloaded the beta but have not installed it yet.

Not sure what to do now since i have tested the cable trick. I will wait for further instruction from you guys.

thanks


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 Post subject: Re: host to gns3 issue
PostPosted: Tue Sep 16, 2014 3:08 pm 
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Joined: Sat Oct 11, 2008 1:41 pm
Posts: 2668
Location: Canada
Ok, no need to test the other points. This is a known problem, I think we will have to understand exactly why this happens.

https://github.com/GNS3/gns3-gui/issues/50

Thanks,

_________________
Jeremy, GNS3 Programmer & Benevolent Dictator for Life.


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 Post subject: Re: host to gns3 issue
PostPosted: Tue Sep 16, 2014 11:57 pm 
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Joined: Sun Sep 14, 2014 12:13 am
Posts: 9
yeah its odd that nmap kills the connection. I wonder if its the mechanics of nmap itself and the way it looks for hosts that is causing the issue and maybe one of the packages in gns3 is freaking out haha

Im guessing the only fix at the moment is the delete and reattach the cable?


thanks


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 Post subject: Re: host to gns3 issue
PostPosted: Wed Sep 17, 2014 1:48 am 
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Joined: Sat Oct 11, 2008 1:41 pm
Posts: 2668
Location: Canada
Quote:
Im guessing the only fix at the moment is the delete and reattach the cable?


That's correct until we can figure it out.

_________________
Jeremy, GNS3 Programmer & Benevolent Dictator for Life.


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 Post subject: Re: host to gns3 issue
PostPosted: Wed Sep 17, 2014 5:03 am 
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Joined: Sun Sep 14, 2014 12:13 am
Posts: 9
Thank you for a great product thus far. If i was a programer and not a mechanical engineer, i would help somehow. I hope my video comes in handy that i posted here.

https://www.youtube.com/watch?v=sV4xzcQ ... e=youtu.be

this shows the error of what is going on.

Thank you and i will wait patiently. In mean time, i will try to build my pen test lab in vmplayer with zebra router or somethin. haha

thanks for all the help.




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