Robert, > Hi Yakov, > > > The above assumes that the already available technology, MPLS, "may > > not be available or deployable for lack of support on network > > elements", yet a brand new technology, a new IPv6 Segment Routing > > header, will be available, deployable, and supported on network > > elements. The authors should elaborate on what makes them think so. > > Let's observe that in order to encapsulate traffic in MPLS in 1000 > node network and steer it north and south 1000 nodes need to be able > to support MPLS (or for that matter RSVP-TE and IGP extensions - let's > leave aside inter-area problems). > > Contrary if the desire is to steer traffic via north and south nodes > from given ingress node to egress node only those 4 out of those 1000 > nodes need to support segment routing. Non of the transit nodes needs > to be SR aware.
The ability to carry MPLS over transit nodes that are not MPLS aware is an already solved problem - it is called MPLS-over-GRE (rfc4023). Implemented by multiple vendors. Known to be interoperable. Yakov. _______________________________________________ spring mailing list [email protected] https://www.ietf.org/mailman/listinfo/spring
