BGP Color-Aware Routing Problem Statement
draft-dskc-bess-bgp-car-problem-statement-02

Document Type Active Internet-Draft (individual)
Authors Dhananjaya Rao  , Swadesh Agrawal  , Clarence Filsfils  , Ketan Talaulikar  , Bruno Decraene  , Dirk Steinberg  , Luay Jalil  , Jim Guichard  , Wim Henderickx 
Last updated 2021-02-22
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BESS WorkGroup                                                    D. Rao
Internet-Draft                                                S. Agrawal
Intended status: Informational                               C. Filsfils
Expires: August 26, 2021                                   K. Talaulikar
                                                           Cisco Systems
                                                             B. Decraene
                                                                  Orange
                                                            D. Steinberg
                                                    Steinberg Consulting
                                                                L. Jalil
                                                                 Verizon
                                                             J. Guichard
                                                               Futurewei
                                                           W. Henderickx
                                                                   Nokia
                                                       February 22, 2021

               BGP Color-Aware Routing Problem Statement
              draft-dskc-bess-bgp-car-problem-statement-02

Abstract

   This document explores the scope, use-cases and requirements for a
   BGP based routing solution to establish end-to-end intent-aware paths
   across a multi-domain service provider network environment.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute
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   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on August 26, 2021.

Rao, et al.              Expires August 26, 2021                [Page 1]
Internet-Draft          BGP CAR Problem Statement          February 2021

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
     1.1.  Objective . . . . . . . . . . . . . . . . . . . . . . . .   3
     1.2.  State-of-the-art  . . . . . . . . . . . . . . . . . . . .   4
       1.2.1.  Color . . . . . . . . . . . . . . . . . . . . . . . .   5
       1.2.2.  Colored vs Color-Aware  . . . . . . . . . . . . . . .   5
       1.2.3.  Per-Destination and Per-Flow Steering . . . . . . . .   6
     1.3.  Why a BGP-based alternative is needed . . . . . . . . . .   6
     1.4.  Color Domains . . . . . . . . . . . . . . . . . . . . . .   6
     1.5.  BGP Color-Aware Routing . . . . . . . . . . . . . . . . .   7
   2.  Intent bound to a Color . . . . . . . . . . . . . . . . . . .   7
   3.  BGP CAR Use-cases . . . . . . . . . . . . . . . . . . . . . .   7
     3.1.  BGP Transport CAR . . . . . . . . . . . . . . . . . . . .   7
       3.1.1.  Use-case of minimization of a cost metric vs a
               latency metric  . . . . . . . . . . . . . . . . . . .   9
       3.1.2.  Use-case of exclusion/inclusion of link affinity  . .  10
       3.1.3.  Use-case of exclusion/inclusion of domains  . . . . .  10
       3.1.4.  Use-case of virtual network function chains in local
               and core domains  . . . . . . . . . . . . . . . . . .  11
     3.2.  BGP VPN CAR . . . . . . . . . . . . . . . . . . . . . . .  12
       3.2.1.  Use-case of minimization of a cost metric vs a
               latency metric  . . . . . . . . . . . . . . . . . . .  15
       3.2.2.  Use-case of exclusion/inclusion of link affinity  . .  16
       3.2.3.  Use-case of virtual network function chains in local
               and core domains  . . . . . . . . . . . . . . . . . .  17
   4.  Deployment Requirements . . . . . . . . . . . . . . . . . . .  18
   5.  Scalability . . . . . . . . . . . . . . . . . . . . . . . . .  19
     5.1.  Scale Requirements  . . . . . . . . . . . . . . . . . . .  19
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