On Sun, Nov 25, 2012 at 12:08:15PM -0500, William Herrin wrote: > On Sun, Nov 25, 2012 at 7:30 AM, Ammar Salih <ammar.sa...@auis.edu.iq> wrote: > > 2- Layer 7 will not be detected by layer 3 devices (routers) .. so > > location-based service on layer-3 will not be possible. > > Geographic-based layer 3 routing has been thoroughly discussed on the > IRTF RRG and just as thoroughly rejected. It's wholly inadequate as an > approximation for topographic locality within the network graph.
If relativistic latency component is measurable, that is information useful for mutual time of flight triangulation. WGS84 just gives you a convenient hinge to hang your information on. > Uses of geolocation information at layer 3 are similar to uses of the > "evil bit." You're correct. It's for layer 2 strictly.
