Design Goals for Scalable Internet Routing
RFC 6227

Document Type RFC - Informational (May 2011; No errata)
Last updated 2015-10-14
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IESG IESG state RFC 6227 (Informational)
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Internet Research Task Force (IRTF)                           T. Li, Ed.
Request for Comments: 6227                           Cisco Systems, Inc.
Category: Informational                                         May 2011
ISSN: 2070-1721

               Design Goals for Scalable Internet Routing

Abstract

   It is commonly recognized that the Internet routing and addressing
   architecture is facing challenges in scalability, mobility, multi-
   homing, and inter-domain traffic engineering.  The Routing Research
   Group is investigating an alternate architecture to meet these
   challenges.  This document consists of a prioritized list of design
   goals for the target architecture.

Status of This Memo

   This document is not an Internet Standards Track specification; it is
   published for informational purposes.

   This document is a product of the Internet Research Task Force
   (IRTF).  The IRTF publishes the results of Internet-related research
   and development activities.  These results might not be suitable for
   deployment.  This RFC represents the consensus of the Routing
   Research Group of the Internet Research Task Force (IRTF).  Documents
   approved for publication by the IRSG are not a candidate for any
   level of Internet Standard; see Section 2 of RFC 5741.

   Information about the current status of this document, any errata,
   and how to provide feedback on it may be obtained at
   http://www.rfc-editor.org/info/rfc6227.

Copyright Notice

   Copyright (c) 2011 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.

Li                            Informational                     [Page 1]
RFC 6227              Scalable Routing Design Goals             May 2011

Table of Contents

   1. Introduction ....................................................2
      1.1. Requirements Language ......................................3
      1.2. Priorities .................................................3
   2. General Design Goals Collected from the Past ....................3
   3. Design Goals for a New Routing Architecture .....................3
      3.1. Improved Routing Scalability ...............................3
      3.2. Scalable Support for Traffic Engineering ...................4
      3.3. Scalable Support for Multi-Homing ..........................4
      3.4. Decoupling Location and Identification .....................4
      3.5. Scalable Support for Mobility ..............................5
      3.6. Simplified Renumbering .....................................5
      3.7. Modularity, Composability, and Seamlessness ................6
      3.8. Routing Quality ............................................6
      3.9. Routing Security ...........................................7
      3.10. Deployability .............................................7
      3.11. Summary of Priorities .....................................7
   4. Security Considerations .........................................7
   5. References ......................................................8
      5.1. Normative References .......................................8
      5.2. Informative References .....................................8

1.  Introduction

   It is commonly recognized that the Internet routing and addressing
   architecture is facing challenges in inter-domain scalability,
   mobility, multi-homing, and inter-domain traffic engineering
   [RFC4984].  The Routing Research Group (RRG) aims to design an
   alternate architecture to meet these challenges.  This document
   presents a prioritized list of design goals for the target
   architecture.

   These goals should be taken as guidelines for the design and
   evaluation of possible architectural solutions.  The expectation is
   that these goals will be applied with good judgment.

   The goals presented here were initially presented and discussed at
   the start of the RRG work on a revised routing architecture, and were
   revisited and finalized after the work on that architecture was
   complete.  As such, this represents both the goals that the RRG
   started with, and revisions to those goals based on our increased
   understanding of the space.

Li                            Informational                     [Page 2]
RFC 6227              Scalable Routing Design Goals             May 2011

1.1.  Requirements Language

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
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