----- Original Message ----- From: "Templin, Fred L" <[email protected]> Sent: Wednesday, March 14, 2018 6:19 PM
> Chris, > > I forgot to mention that one of the key requirements is that there be no > dynamic routing protocol running over the air-to-ground data links. The > data links we are talking about have data rates as low as 1Mbps and even > lower, and the civil aviation community has declared that the control > message overhead must be kept to a minimum. So, placing a BGP > speaker on-board the airplane would not be acceptable. > > Is there interest in having a presentation about this in London next > week? Fred I am always interested in your ideas, especially when BGP is involved. However widely they are or are not adopted, I find them stimulating Tom Petch > > Thanks - Fred > > From: GROW [mailto:[email protected]] On Behalf Of Templin, Fred L > Sent: Tuesday, March 13, 2018 8:57 AM > > Hi Chris, > > >it's bad for bgp on the global scale, but in a VPN scenario you're talking about ~10k routes? (number of planes concurrently in the air) and transitions at a rate of 100/second? 500/second? (what rate is >expected at 10k planes? at 100k planes?) > > The model is that each airplane gets one or more IPv6 prefixes and acts as a mobile > network. So, it has a mobile router on board, and uses the IPv6 prefixes to number > its downstream-attached devices and networks â?" an airborne Internet of Things. > The IPv6 prefixes stay the same wherever the plane roams to (more on that below). > But, the planeâ?Ts underlying data link connections can be changing very dynamically, > e.g., switch from SATCOM to cellular, update QoS due to signal fading, etc. > > >For quick/dirty numbers: > >https://www.telegraph.co.uk/travel/travel-truths/how-many-planes-are-th ere-in-the-world/ > > > >says there are 25k planes (round numbers) planes that I think qualify in your pool. > > You are very correct to check on the current numbers of planes. For civil aviation, > we currently see tens of thousands. But, the system should be flexible to support > several orders of magnitude more than that with the multitudes of unmanned > aircraft expected to be coming into the airspace in the near future. > > >why would you change ip addressing on the plane? having them keep their addressing seems simpler and more conducive to stability, no? > > Right, the airplaneâ?Ts on-board IPv6 prefixes used for downstream IoT addressing > never change. It is the planeâ?Ts upstream data link addresses that can change > dynamically, i.e., in the same way that a cellphoneâ?Ts WiFi and/or 4G addresses > can change. > > Again, the design is to keep mobility-related churn out of BGP in the core > of the network and to keep the churn out in the edges of the network. > > Thanks - Fred > > > From: Christopher Morrow [mailto:[email protected]] > Sent: Tuesday, March 13, 2018 8:24 AM > _______________________________________________ GROW mailing list [email protected] https://www.ietf.org/mailman/listinfo/grow
