When using virtual instances for network simulation (among other things), there exists the issue that the virtual device interface mapping does not match that of the actual physical interfaces on the real devices. While a conversion/substitution could be done, this would result in the creation of large amounts of code/config that serves little useful purpose.

The cEOS-lab and vEOS-lab platforms use a different “forwarding plane” than EOS and CloudEOS; it is a software forwarding agent called Etba. A more efficient Etba provides more flexibility and better scalability for virtual network simulation for cEOS-lab and vEOS-lab users.