Usage and Applicability of Link State Vector Routing in Data Centers
draft-keyupate-lsvr-applicability-02

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Last updated 2018-07-02
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LSVR                                                            K. Patel
Internet-Draft                                              Arrcus, Inc.
Intended status: Informational                                 A. Lindem
Expires: January 3, 2019                                   Cisco Systems
                                                                S. Zandi
                                                                G. Dawra
                                                                Linkedin
                                                            July 2, 2018

  Usage and Applicability of Link State Vector Routing in Data Centers
                draft-keyupate-lsvr-applicability-02.txt

Abstract

   This document discusses the usage and applicability of Link State
   Vector Routing (LSVR) extensions in the CLOS architecture of Data
   Center Networks.  The document is intended to provide a simplified
   guide for the deployment of LSVR extensions.

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
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   This Internet-Draft will expire on January 3, 2019.

Copyright Notice

   Copyright (c) 2018 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.  Code Components extracted from this document must

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Internet-Draft                                                 July 2018

   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Requirements Language . . . . . . . . . . . . . . . . . . . .   2
   3.  Recommended Reading . . . . . . . . . . . . . . . . . . . . .   3
   4.  Common Deployment Scenario  . . . . . . . . . . . . . . . . .   3
   5.  Justification for BGP SPF Extension . . . . . . . . . . . . .   4
   6.  LSVR Applicability to CLOS Networks . . . . . . . . . . . . .   4
     6.1.  Usage of BGP-LS SAFI  . . . . . . . . . . . . . . . . . .   5
       6.1.1.  Relationship to Other BGP AFI/SAFI Tuples . . . . . .   5
     6.2.  Peering Models  . . . . . . . . . . . . . . . . . . . . .   5
       6.2.1.  Bi-Connected Graph Heuristic  . . . . . . . . . . . .   6
     6.3.  BGP Peer Discovery  . . . . . . . . . . . . . . . . . . .   6
       6.3.1.  BGP Peer Discovery Requirements . . . . . . . . . . .   6
       6.3.2.  BGP Peer Discovery Alternatives . . . . . . . . . . .   7
       6.3.3.  Data Center Interconnect (DCI) Applicability  . . . .   7
     6.4.  Non-CLOS/FAT Tree Topology Applicability  . . . . . . . .   8
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   8
   8.  Security Considerations . . . . . . . . . . . . . . . . . . .   8
   9.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   8
   10. References  . . . . . . . . . . . . . . . . . . . . . . . . .   8
     10.1.  Normative References . . . . . . . . . . . . . . . . . .   8
     10.2.  Informative References . . . . . . . . . . . . . . . . .   9
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  10

1.  Introduction

   This document complements [I-D.ietf-lsvr-bgp-spf] by discussing the
   applicability of the technology in a simple and fairly common
   deployment scenario, which is described in Section 4.

   After describing the deployment scenario, Section 5 will describe the
   reasons for BGP modifications for such deployments.

   Once the control plane routing protocol requirements are described,
   Section 6 will cover the LSVR protocol enhancements to BGP to meet
   these requirements and their applicability to Data Center CLOS
   networks.

2.  Requirements Language

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and
   "OPTIONAL" in this document are to be interpreted as described in BCP

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