H Joel, Can you reference the specific section in the IS-IS SRv6 draft you are commenting on? I seem to remember this discussion but it was at least a month back, if not more.
Thanks, Acee On 9/23/20, 6:31 PM, "Lsr on behalf of Joel Halpern" <lsr-boun...@ietf.org on behalf of j...@joelhalpern.com> wrote: The announcement prompted me to look again and think about an interaction between this and the network programming draft. To be clear, I am NOT objecting to either this or the network programming draft. I am just wondering what I am missing. The NP draft, and the advertisement mechanism allows a router to advertise the number of bits for the ARG portion of a SID. Q1: The point presumably is to avoid needing to advertise each of the individual values? An example of this is, I think, and ARG for the table selection where the ARG is the table number for the packet to be looked up in? Q2: If so, how does the head end know what table number corresponds to what meaning? If this requires a separate advertisement there seems to be no savings. if this requires out-of-band knowledge then we seem to have lost the benefit of advertising all of this in the routing protocol. I suspect I am simply missing a piece. can someone explain please? Thank you, Joel On 9/23/2020 4:40 PM, internet-dra...@ietf.org wrote: > > A New Internet-Draft is available from the on-line Internet-Drafts directories. > This draft is a work item of the Link State Routing WG of the IETF. > > Title : IS-IS Extension to Support Segment Routing over IPv6 Dataplane > Authors : Peter Psenak > Clarence Filsfils > Ahmed Bashandy > Bruno Decraene > Zhibo Hu > Filename : draft-ietf-lsr-isis-srv6-extensions-10.txt > Pages : 25 > Date : 2020-09-23 > > Abstract: > Segment Routing (SR) allows for a flexible definition of end-to-end > paths by encoding paths as sequences of topological sub-paths, called > "segments". Segment routing architecture can be implemented over an > MPLS data plane as well as an IPv6 data plane. This draft describes > the IS-IS extensions required to support Segment Routing over an IPv6 > data plane. > > _______________________________________________ Lsr mailing list Lsr@ietf.org https://www.ietf.org/mailman/listinfo/lsr _______________________________________________ Lsr mailing list Lsr@ietf.org https://www.ietf.org/mailman/listinfo/lsr