I-D Action: draft-ietf-teas-pcecc-use-cases-12.txt

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A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Traffic Engineering Architecture and Signaling WG of the IETF.

        Title           : The Use Cases for Path Computation Element (PCE) as a Central Controller (PCECC).
        Authors         : Zhenbin (Robin) Li
                          Dhruv Dhody
                          Quintin Zhao
                          King He
                          Boris Khasanov
  Filename        : draft-ietf-teas-pcecc-use-cases-12.txt
  Pages           : 43
  Date            : 2022-11-07

Abstract:
   The Path Computation Element (PCE) is a core component of a Software-
   Defined Networking (SDN).  It can compute optimal paths for traffic
   across a network and can also update the paths to reflect changes in
   the network or traffic demands.  PCE was developed to derive paths
   for MPLS Label Switched Paths (LSPs), which are supplied to the head
   end of the LSP using the Path Computation Element Communication
   Protocol (PCEP).

   SDN has a much broader applicability than signal MPLS traffic-
   engineered (TE) paths.  PCE may be used to determine paths in a range
   of use cases including static LSPs, Segment Routing (SR), Service
   Function Chaining (SFC) and in many other networking scenarios.  Thus
   it is reasonable to consider PCEP as a common control protocol for
   usage in these scenarios to allow PCE to be fully enabled as a
   central controller.

   A PCE as a Central Controller (PCECC) can simplify the processing of
   a distributed control plane by blending it with elements of SDN and
   without completely replacing it.  This document describes general
   considerations for PCECC deployment and examines its applicability
   and benefits, as well as its challenges and limitations, through a
   number of use cases.  PCEP extensions which required for PCECC usage
   are covered in separate documents.


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-teas-pcecc-use-cases/

There is also an htmlized version available at:
https://datatracker.ietf.org/doc/html/draft-ietf-teas-pcecc-use-cases-12

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-teas-pcecc-use-cases-12


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