Usage and Applicability of Link State Vector Routing in Data Centers
draft-ietf-lsvr-applicability-02
LSVR K. Patel
Internet-Draft Arrcus, Inc.
Intended status: Informational A. Lindem
Expires: November 2, 2019 Cisco Systems
S. Zandi
G. Dawra
Linkedin
May 1, 2019
Usage and Applicability of Link State Vector Routing in Data Centers
draft-ietf-lsvr-applicability-02.txt
Abstract
This document discusses the usage and applicability of Link State
Vector Routing (LSVR) extensions in data center networks utilizing
CLOS or Fat-Tree topologies. 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
Task Force (IETF). Note that other groups may also distribute
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Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress."
This Internet-Draft will expire on November 2, 2019.
Copyright Notice
Copyright (c) 2019 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
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Patel, et al. Expires November 2, 2019 [Page 1]
Internet-Draft May 2019
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 . . . . . . . . . . . . . . . . . . . . 3
3. Recommended Reading . . . . . . . . . . . . . . . . . . . . . 3
4. Common Deployment Scenario . . . . . . . . . . . . . . . . . 3
5. Justification for BGP SPF Extension . . . . . . . . . . . . . 4
6. LSVR Applicability to CLOS Networks . . . . . . . . . . . . . 5
6.1. Usage of BGP-LS SPF SAFI . . . . . . . . . . . . . . . . 5
6.1.1. Relationship to Other BGP AFI/SAFI Tuples . . . . . . 6
6.2. Peering Models . . . . . . . . . . . . . . . . . . . . . 6
6.2.1. Sparse Peering Model . . . . . . . . . . . . . . . . 6
6.2.2. Bi-Connected Graph Heuristic . . . . . . . . . . . . 7
6.3. BGP Spine/Leaf Topology Policy . . . . . . . . . . . . . 7
6.4. BGP Peer Discovery Requirements . . . . . . . . . . . . . 8
6.5. BGP Peer Discovery . . . . . . . . . . . . . . . . . . . 9
6.5.1. BGP Peer Discovery Alternatives . . . . . . . . . . . 9
6.5.2. Data Center Interconnect (DCI) Applicability . . . . 9
6.6. Non-CLOS/FAT Tree Topology Applicability . . . . . . . . 10
7. BGP Policy Applicability . . . . . . . . . . . . . . . . . . 10
8. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 10
9. Security Considerations . . . . . . . . . . . . . . . . . . . 10
10. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 10
11. References . . . . . . . . . . . . . . . . . . . . . . . . . 11
11.1. Normative References . . . . . . . . . . . . . . . . . . 11
11.2. Informative References . . . . . . . . . . . . . . . . . 11
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 13
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.
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