Re: [Int-area] Some thoughts on draft-yong-intarea-inter-sites-over-tunnels

[Joe Touch <[e-mail]>]

On 12/6/2016 2:43 PM, Templin, Fred L wrote:
>
> Hi Joe,
>
>  
>
> I am looking at multilink nodes like manned aircraft and unmanned
> aerial vehicles that
>
> may have many active aviation data links, e.g., SATCOM, LDACS, 4G,
> AeroMACS etc.
>
> The links will be either available or unavailable at various phases of
> flight. But, AERO
>
> lays down a single IP layer interface (the aero0 interface) so that
> the aviation data
>
> links are seen as underlying interfaces each having one or more
> addresses. These
>
> underlying addresses are then seen as the L2 addresses for the AERO
> interface.
>

You can accomplish the same thing using virtual interfaces using dynamic
routing. See the following:
J. Touch, T. Faber, “Dynamic Host Routing for Production Use of
Developmental Networks <http://www.isi.edu/touch/pubs/icnp97/>,” in
/Proc. ICNP ’97/, Atlanta, Oct. 1997, pp. 285-292.

>  Underlying interfaces may come up and go down dynamically during a
> flight, and their
>
> addresses may change dynamically, e.g., if they hand over from cell
> tower A to cell
>
> tower B. It is AERO’s job to take care of any mobility related links
> and always keep
>
> neighbors informed of the current L2 addresses and availability. But,
> it all still looks
>
> like a single interface (aero0) to the IP layer.
>
You can do the same thing using IP forwarding without needing to bury
the forwarding decisions inside the link.

Joe