The Per-Path Service Instruction (PPSI) Option
draft-bonica-6man-vpn-dest-opt-06
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6man R. Bonica
Internet-Draft Juniper Networks
Intended status: Standards Track Y. Kamite
Expires: January 7, 2020 NTT Communications Corporation
C. Lenart
Verizon
N. So
F. Xu
Reliance Jio
G. Presbury
Hughes Network Systems
G. Chen
Baidu
Y. Zhu
G. Yang
China Telecom
Y. Zhou
ByteDance
July 6, 2019
The Per-Path Service Instruction (PPSI) Option
draft-bonica-6man-vpn-dest-opt-06
Abstract
SRv6+ encodes Per-Path Service Instructions (PPSI) in a new IPv6
option, called the PPSI Option. This document describes the PPSI
Option.
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
working documents as Internet-Drafts. The list of current Internet-
Drafts is at https://datatracker.ietf.org/drafts/current/.
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 January 7, 2020.
Bonica, et al. Expires January 7, 2020 [Page 1]
Internet-Draft Per-Path Service Instruction Opt July 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
(https://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
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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. PPSI Identifiers . . . . . . . . . . . . . . . . . . . . . . 3
4. The PPSI Option . . . . . . . . . . . . . . . . . . . . . . . 3
5. Destination Option Header Considerations . . . . . . . . . . 4
6. Security Considerations . . . . . . . . . . . . . . . . . . . 4
7. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 5
8. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 5
9. References . . . . . . . . . . . . . . . . . . . . . . . . . 5
9.1. Normative References . . . . . . . . . . . . . . . . . . 5
9.2. Informative References . . . . . . . . . . . . . . . . . 6
Appendix A. Virtual Private Networks (VPN) . . . . . . . . . . . 7
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 9
1. Introduction
An SRv6+ [I-D.bonica-spring-srv6-plus] path provides unidirectional
connectivity from its ingress node to its egress node. While an
SRv6+ path can follow the least cost path from ingress to egress, it
can also follow any other path.
SRv6+ paths are encoded as IPv6 [RFC8200] header chains. When an
SRv6+ ingress node receives a packet, it encapsulates the packet in
an IPv6 header chain. It then forwards the encapsulated packet to
the path's egress node. When the egress node receives the packet, it
processes the SRv6+ payload (i.e., the original packet).
SRv6+ paths are programmable. They support several instruction
types, including Per-Path Service Instructions (PPSI). PPSIs
determine how path egress nodes process SRv6+ payloads. In the
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