SRv6 Deployment Consideration
draft-tian-spring-srv6-deployment-consideration-03
Network Working Group H. Tian
Internet-Draft F. Zhao
Intended status: Informational CAICT
Expires: January 10, 2021 C. Xie
China Telecom
T. Li
J. Ma
China Unicom
R. Mwehaire
MTN Uganda Ltd.
E. Chingwena
MTN Group Limited
S. Peng, Ed.
Z. Li
Y. Xiao
Huawei Technologies
July 9, 2020
SRv6 Deployment Consideration
draft-tian-spring-srv6-deployment-consideration-03
Abstract
SRv6 has significant advantages over SR-MPLS and has attracted more
and more attention and interest from network operators and verticals.
Smooth network migration towards SRv6 is a key focal point and this
document provides network design and migration guidance and
recommendations on solutions in various scenarios. Deployment cases
with SRv6 are also introduced.
Requirements Language
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
document are to be interpreted as described in RFC 2119 [RFC2119].
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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Drafts is at https://datatracker.ietf.org/drafts/current/.
Tian, et al. Expires January 10, 2021 [Page 1]
Internet-Draft SRv6 Deployment Consideration July 2020
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This Internet-Draft will expire on January 10, 2021.
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Advantages of SRv6 . . . . . . . . . . . . . . . . . . . . . 4
2.1. IP Route Aggregation . . . . . . . . . . . . . . . . . . 4
2.2. End-to-end Service Auto-start . . . . . . . . . . . . . . 5
2.3. On-Demand Upgrade . . . . . . . . . . . . . . . . . . . . 6
2.4. Simplified Service Deployment . . . . . . . . . . . . . . 7
2.4.1. Carrier's Carrier . . . . . . . . . . . . . . . . . . 7
2.4.2. LDP over TE . . . . . . . . . . . . . . . . . . . . . 8
3. Compatibility Challenges . . . . . . . . . . . . . . . . . . 9
3.1. Fast Reroute (FRR) . . . . . . . . . . . . . . . . . . . 9
3.2. Traffic Engineering (TE) . . . . . . . . . . . . . . . . 10
3.3. Service Function Chaining (SFC) . . . . . . . . . . . . . 10
3.4. IOAM . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4. Solutions for mitigating the compatibility challenges . . . . 11
4.1. Traffic Engineering . . . . . . . . . . . . . . . . . . . 12
4.1.1. Binding SID (BSID) . . . . . . . . . . . . . . . . . 12
4.1.2. PCEP FlowSpec . . . . . . . . . . . . . . . . . . . . 12
4.2. SFC . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.2.1. Stateless SFC . . . . . . . . . . . . . . . . . . . . 12
4.2.2. Stateful SFC . . . . . . . . . . . . . . . . . . . . 13
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