Use Multipath TCP https://datatracker.ietf.org/group/mptcp/documents/
Thanks, Donald =============================== Donald E. Eastlake 3rd 2386 Panoramic Circle, Apopka, FL 32703 USA d3e...@gmail.com On Sat, Jan 28, 2023 at 10:07 AM William Herrin <b...@herrin.us> wrote: > On Fri, Jan 27, 2023 at 9:49 PM Masataka Ohta > <mo...@necom830.hpcl.titech.ac.jp> wrote: > > That multihomed sites are relying on the entire Internet > > for computation of the best ways to reach them is not > > healthy way of multihoming. > > This was studied in the IRTF RRG about a decade ago. There aren't any > other workable ways of multihoming compatible with the TCP protocol, > not even in theory. Every other mechanism imagined failed some basic > system constraint, usually the requirement that packets have > administrative permission to cross an intermediate network. So, > another way of multihoming critically depends on replacing the layer-4 > protocols with something that doesn't intermingle the IP address with > the connection identifier. > > For clarity: TCP's connection identifier consists of the source and > destination IP addresses plus the source and destination ports. Those > four elements, unique when combined, identify exactly one ongoing TCP > connection. Because of this, the connection must fail if the source or > destination IP addresses are no longer available to the source or > destination hosts. From this fact, we get the requirement that the > entire Internet learn when a particular IP address has changed its > position within the network. > > Regards, > Bill Herrin > > > -- > For hire. https://bill.herrin.us/resume/ >
