On May 29, 2020, at 10:28 AM, Peter Psenak 
<ppse...@cisco.com<mailto:ppse...@cisco.com>> wrote:

how do nodes in the network learn about the local CRH identifier a node
X allocated for a prefix residing on node Y?

This is also answered in section 4, AFAICT:


   The CRH-FIB can be populated:

   o  By an operator, using a Command Line Interface (CLI).

   o  By a controller, using the Path Computation Element (PCE)
      Communication Protocol (PCEP) 
[RFC5440<https://tools.ietf.org/html/rfc5440>] or the Network
      Configuration Protocol (NETCONF) 
[RFC6241<https://tools.ietf.org/html/rfc6241>].

   o  By a distributed routing protocol 
[ISO10589-Second-Edition<https://tools.ietf.org/html/draft-bonica-6man-comp-rtg-hdr-22#ref-ISO10589-Second-Edition>],
      [RFC5340<https://tools.ietf.org/html/rfc5340>], 
[RFC4271<https://tools.ietf.org/html/rfc4271>].


I imagine the list isn’t meant to be exhaustive, some other minor variations 
have been discussed on-list IIRC.

—John
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