It would seem to me that while due to the fact we are tunneling most
everything we may have a logical full mesh but far from a physical full
mesh. What does a tunneled logical full mesh really accomplish for us
other than making things all the more complicated? Wouldn't traditional
peering and routing done "the normal way" be much easier? I can see a
valid place for nailing up vpn links and various tunnels, i.e. last mile
access and tying islands together though something other than IPIP with
links negotiated on a peering basis as needed, but what does a full logical
mesh of tunnels give us? It seems that since it's built of tunnels and
thus virtual rather than physical we just unnecessarily complicate the mess
wherein the tunneled traffic and the tunnels themselves end up taking
multiple and somewhat changing hops to get from one end to another. IP was
designed such that I could hand a packet off and basically go, "ok, now
it's your problem to deliver it (on a best effort basis)", thus I shouldn't
need to know every conceivable route to every conceivable endpoint. What
prevents us from using it that way?
Eric
AF6EP