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.salih@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.