VIRL, CCIE Lab Builder, GNS3

I am looking at using VIRL or CCIE lab builder for CCIE studies alongside tokens. It is said that VIRL registration is for a year but I am wondering whether I can work on it for as much as I want just like working on GNS3? Would have to pay for new keys after one year of use? I just need more inside into how it works.
Also, how does CCIE lab builder compare to VIRL in terms of performance and also given that it has a twenty node limit. Would that be good for the CCIE labs? Can I integrate VIRL licenses into GNS3 legally?
I would be pleased with any suggestions.


  • Thanks Martinl for the answer. GNS3 does not provide the IOL/IOU images. I meant to ask if IOSvL2 from VIRL can be integrated into GNS 3 for layer 2 switching. I see some materials on it but I just needed a second opinion.

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