On January 27, 2024 at 3:00:04 PM, Greg Mirsky wrote:
Greg/authors: Hi! > The draft is stable, and the authors believe that it is ready for the WG LC. > We appreciate your consideration of moving this work forward to the WG LC. I took a quick look at this document, and we need to address a couple of dependency-issues before moving closer to WGLC. [I will provide a more detailed review as we move forward.] (1) I-D.ietf-spring-mpls-anycast-segments I-D.ietf-spring-mpls-anycast-segments is listed as an Informative reference, but it needs to be Normative because it is required in §2: If the target segment is an anycast prefix segment ([I-D.ietf-spring-mpls-anycast-segments]) the corresponding Anycast SID MUST be included in the Target TLV as the very last sub-TLV. Also, for BFD Control packet the ingress SR node MUST use precisely the same label stack encapsulation, especially Entropy Label ([RFC6790]), as for the LSP ping with the BFD Discriminator TLV that bootstrapped the BFD session. Other operational aspects of using BFD to monitor the continuity of the path to the particular Anycast SID, advertised by a group of SR-MPLS capable nodes, will be considered in the future versions of the document. I-D.ietf-spring-mpls-anycast-segments expired almost 4 years ago! :-( Before we try to revive it, is the reference needed? This paragraph is the only one that talks about anycast. Also, it sounds (from the last sentence) as if more could be said about anycast, so perhaps all the considerations can be handled in a future document. (?) (2) I-D.ietf-mpls-bfd-directed I-D.ietf-mpls-bfd-directed is a Normative reference and is listed as one of the options in §3 (Use BFD Reverse Path TLV over Segment Routed MPLS Tunnel). However, that document is Experimental, and this one is on the standards track. While downrefs are possible, using I-D.ietf-mpls-bfd-directed is premature. Not only has the document not become an RFC yet, allowing for experience on the experiment to be collected, but the reason for its Experimental status is precisely that the "return path that this session might be less stable than the tunnel being tested" [1]. Is the reference required? Thanks! Alvaro. [1] https://datatracker.ietf.org/doc/draft-ietf-mpls-bfd-directed/shepherdwriteup/ _______________________________________________ spring mailing list spring@ietf.org https://www.ietf.org/mailman/listinfo/spring
