Segment Routing over UDP(SRoU)
draft-zartbot-sr-udp-00

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SPRING                                                           K. Fang
Internet-Draft                                       Cisco Systems, Inc.
Intended status: Experimental                                      Y. Li
Expires: 31 December 2020                                   Google, Inc.
                                                                  F. Cai
                                                     Cisco Systems, Inc.
                                                            29 June 2020

                     Segment Routing over UDP(SRoU)
                        draft-zartbot-sr-udp-00

Abstract

   This document defines the Segment Routing Header[RFC8754] extension
   in UDP transport protocol with Network Address Translation Traversal.

Status of This Memo

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   provisions of BCP 78 and BCP 79.

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   This Internet-Draft will expire on 31 December 2020.

Copyright Notice

   Copyright (c) 2020 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
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   license-info) in effect on the date of publication of this document.
   Please review these documents carefully, as they describe your rights
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   provided without warranty as described in the Simplified BSD License.

Fang, et al.            Expires 31 December 2020                [Page 1]
Internet-Draft       Segment Routing over UDP(SRoU)            June 2020

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Specification of Requirements . . . . . . . . . . . . . .   3
     1.2.  Motivation  . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  SR over UDP(SRoU) Packet encapsulation  . . . . . . . . . . .   3
     2.1.  SR over UDP(SRoU) Header  . . . . . . . . . . . . . . . .   4
   3.  Packet Processing . . . . . . . . . . . . . . . . . . . . . .   6
     3.1.  Type:0x1, IPv4 Locator Mode . . . . . . . . . . . . . . .   7
     3.2.  Type:0x2, SRv6 format . . . . . . . . . . . . . . . . . .  10
     3.3.  Type:0x3, Compressed Segment List . . . . . . . . . . . .  10
       3.3.1.  Service Registration & Mapping  . . . . . . . . . . .  10
     3.4.  Optional TLV  . . . . . . . . . . . . . . . . . . . . . .  10
       3.4.1.  SR Integrity TLV  . . . . . . . . . . . . . . . . . .  10
       3.4.2.  Micro-segmentation(uSeg)  . . . . . . . . . . . . . .  10
       3.4.3.  End.PacketInfo  . . . . . . . . . . . . . . . . . . .  11
   4.  Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . .  11
     4.1.  Traffic engineering over Internet . . . . . . . . . . . .  11
     4.2.  Multipath forwarding  . . . . . . . . . . . . . . . . . .  12
     4.3.  Micro Segmentation  . . . . . . . . . . . . . . . . . . .  12
     4.4.  Container Network . . . . . . . . . . . . . . . . . . . .  12
     4.5.  MPLS-SR with SDWAN  . . . . . . . . . . . . . . . . . . .  12
     4.6.  Cloud Native Network platform . . . . . . . . . . . . . .  13
   5.  Security Considerations . . . . . . . . . . . . . . . . . . .  14
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  14
     6.1.  SRoU with QUIC  . . . . . . . . . . . . . . . . . . . . .  14
   Acknowledgements  . . . . . . . . . . . . . . . . . . . . . . . .  14
   References  . . . . . . . . . . . . . . . . . . . . . . . . . . .  14
     Normative References  . . . . . . . . . . . . . . . . . . . . .  14
     Informative References  . . . . . . . . . . . . . . . . . . . .  15
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  15

1.  Introduction

   Many UDP based transport protocol(eg, IPSec/DTLS/QUIC) could provide
   a secure transportation layer to handle overlay traffic.

   This document defines a new Segment Routing Header in UDP payload to
   enable segment routing over UDP(SRoU).

   Segment Routing over UDP(SRoU) interworking with QUIC could provide a
   generic programmable and secure transport layer for next generation
   applications.

   Discussion of this work is encouraged to happen on GitHub repository
   which contains the draft: https://github.com/zartbot/draft-quic-sr
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