Re: [vnrg] Some definitions and way forward

[Andreas Fischer <[e-mail]>]

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Hi Roland, Joe,

>> Also, it'd be useful to understand your view of the relationship
>> of these definitions to PPVPNs, VPNs, etc.
> 
> I have no clear description yet, but VPNs usually are not including 
> the virtual node aspect. They are mainly about
> providing/establishing links to connect to an existing infrastructure
> and are more a kind of overlay. I think we need to come  up with a
> clearer distinction, but that will need more time.

Aren't VPNs just one kind of link virtualization? VPNs are basically
tunnels with added encryption, no? Tunnels, on the other hand, just
create a "virtual link" between two arbitrary nodes in a network.

As such, I would also disagree to consider them as kind of an overlay
network, as
a) They don't build a network, only a link (the 'N' in 'VPN' is
misleading, IMHO)
b) They are not necessarily between end hosts (which conflicts your
earlier statement, that overlay nodes are always sitting at the edge of
the network)

Regards,
Andreas
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