> From: Jeffrey (Zhaohui) Zhang [mailto:[email protected]] > Sent: Monday, December 20, 2010 3:18 PM
Jeffrey: ... > > It is very tempting to use the model that you describe, but radio > > networks can be "flimsy" because of interference, signal fading, > > movement, etc.. The broadcast model for neighbor > > discovery/maintenance can quickly become unusable for nodes that > > loose connectivity to the DR. > > > > It is very easy to see how the same L2 media may provide nodes that > > don't have the same view of the other nodes (not everyone is within > > radio range of everyone else, for example). > > There are real-life examples where a radio network is built to > guarantee that if a node can reach a central node then it can reach > others who can also reach the central node (e.g., a satellite network). That's transitive connectivity (nodes can reach each other through the satellite), not direct connectivity (a node sends a broadcast and others receive it w/out any other node in the middle). ...but that could be a completely separate discussion. ;-) ... > The premise is that we have a broadcast network but one can reach some > stations with a metric that is different from when reaching others. > > If that premise is not satisfied, then it's a different topic (and out > of the scope). You should specifically mention the limitations of the solution in the draft to avoid generalizations...like the one I made when you suggested "radio networks". Happy Holidays!! Alvaro. _______________________________________________ OSPF mailing list [email protected] https://www.ietf.org/mailman/listinfo/ospf
