Viability of GNS3 network simulation for testing features/configurations.

Jason Kuehl jason.w.kuehl at gmail.com
Wed Oct 16 19:23:17 UTC 2019


I use the server version of GNS and I love it.  I just need to VPN into my
DC and use my client to connect to GNS.

On Wed, Oct 16, 2019 at 2:22 PM Mike Bolitho <mikebolitho at gmail.com> wrote:

> EVE-NG is also really good. Just an FYI, GNS3 went through a major refresh
> about 18 months ago or so and it's so much better now. Either way, you
> can't go wrong with GNS3 or EVE-NG.
>
> - Mike Bolitho
>
>
> On Wed, Oct 16, 2019 at 11:18 AM Aaron Gould <aaron1 at gvtc.com> wrote:
>
>> Oh, forgot the links…
>>
>>
>>
>> http://www.eve-ng.net/
>>
>>
>>
>> http://www.eve-ng.net/documentation/howto-s
>>
>>
>>
>>
>>
>>
>>
>>
>>
>> *From:* NANOG [mailto:nanog-bounces at nanog.org] *On Behalf Of *Aaron Gould
>> *Sent:* Wednesday, October 16, 2019 1:14 PM
>> *To:* 'Mike Bolitho'; 'Tom Beecher'; 'Ryland Kremeier'
>> *Cc:* nanog at nanog.org
>> *Subject:* RE: Viability of GNS3 network simulation for testing
>> features/configurations.
>>
>>
>>
>> I’ve used GNS3 some years ago for a lot of simulation and testing.  But,
>> I’m blown away at how much more I like EVE-NG (emulated virtual environment
>> next-gen)
>>
>>
>>
>> I use the community free version… lots of vendor OS support… of which,
>> I’ve actually work with the following….
>>
>> -        XRv
>>
>> -        IOS virtual
>>
>> -        vMX
>>
>> -        vSRX
>>
>> -        vQFX
>>
>>
>>
>> …check your in-box for a screen shot of my current environment.
>>
>>
>>
>> -Aaron
>>
>>
>>
>> *From:* NANOG [mailto:nanog-bounces at nanog.org] *On Behalf Of *Mike
>> Bolitho
>> *Sent:* Wednesday, October 16, 2019 12:02 PM
>> *To:* Tom Beecher
>> *Cc:* <nanog at nanog.org>
>> *Subject:* Re: Viability of GNS3 network simulation for testing
>> features/configurations.
>>
>>
>>
>> Totally agree with Tom here. It's going to work really well for most
>> things. But if you're testing code for bugs you NEED to do it on the same
>> hardware you have in your environment in an actual lab.
>>
>>
>> - Mike Bolitho
>>
>>
>>
>>
>>
>> On Wed, Oct 16, 2019 at 9:56 AM Tom Beecher <beecher at beecher.cc> wrote:
>>
>> GNS3 can do a heck of a lot, and the price is definitely right.
>>
>>
>>
>> I have used it extensively for initial fleshing out of designs or ideas,
>> protocol nerding, automation interaction testing, etc. There certainly
>> other tools out there, but being able to visually draw a topology out,
>> connect the dots, and have an environment to test in about 10 minutes is
>> very nice. There is an API you can hook into to do some of that for you if
>> you are so inclined, but that would depend on your use case and resources.
>> For how I've used it, never been required.
>>
>>
>>
>> Some of the VMs from vendors can be pretty CPU and/or RAM intensive, so
>> I've had the best experience running them all on a dedicated server, not
>> locally. Again, use case dependent. For code testing I would always run the
>> test set on hardware as well for likely obvious reasons.
>>
>>
>>
>> If you really get into the weeds with it you can do quite a lot.
>>
>>
>>
>> On Wed, Oct 16, 2019 at 11:52 AM Ryland Kremeier <
>> rkremeier at barryelectric.com> wrote:
>>
>> Hello,
>>
>>
>>
>> I’m currently in the process of setting up a near identical network to
>> our own in GNS3 for testing purposes. Has anyone here tried this before to
>> any success? We need to buy the Cisco IOSv image to continue with the sim
>> so I figured I would inquire here first before diving in.
>>
>>
>>
>> All info is appreciated,
>>
>> --
>>
>> Ryland Kremeier
>>
>>

-- 
Sincerely,

Jason W Kuehl
Cell 920-419-8983
jason.w.kuehl at gmail.com
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