I-D Action: draft-li-pce-controlled-id-space-15.txt

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   Title           : Path Computation Element Communication Protocol (PCEP) extension to advertise the PCE Controlled Identifier Space
   Authors         : Cheng Li
                     Hang Shi
                     Aijun Wang
                     Weiqiang Cheng
                     Chao Zhou
   Filename        : draft-li-pce-controlled-id-space-15.txt
   Pages           : 18
   Date            : 2023-05-11

Abstract:
   The Path Computation Element Communication Protocol (PCEP) provides a
   mechanism for the Path Computation Elements (PCEs) to perform path
   computations in response to Path Computation Clients (PCCs) requests.
   The Stateful PCE extensions allow stateful control of Multiprotocol
   Label Switching (MPLS) Traffic Engineering (TE) Label Switched Paths
   (LSPs) using PCEP.  Furthermore, PCE can be used for computing paths
   in the SR networks.

   Stateful PCE provides active control of MPLS-TE LSPs via PCEP, for a
   model where the PCC delegates control over one or more locally
   configured LSPs to the PCE.  Further, stateful PCE could also create
   and remove PCE-initiated LSPs by itself.  A PCE-based Central
   Controller (PCECC) simplify the processing of a distributed control
   plane by integrating with elements of Software-Defined Networking
   (SDN).

   In some use cases, such as PCECC or Binding Segment Identifier (SID)
   for Segment Routing (SR), there are requirements for a stateful PCE
   to make allocation of labels, SIDs, etc.  These use cases require PCE
   aware of various identifier spaces from where to make allocations on
   behalf of a PCC.  This document describes a generic mechanism for a
   PCC to inform the PCE of the identifier space set aside for the PCE
   control via PCEP.  The identifier could be an MPLS label, a SID, or
   any other to-be-defined identifier that can be allocated and managed
   by the PCE.

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https://datatracker.ietf.org/doc/draft-li-pce-controlled-id-space/

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https://datatracker.ietf.org/doc/html/draft-li-pce-controlled-id-space-15

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