Unified Source Routing Instructions using MPLS Label Stack
draft-xu-mpls-unified-source-routing-instruction-03
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2017-08-10
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Network Working Group X. Xu
Internet-Draft Huawei
Intended status: Standards Track C. Filsfils
Expires: February 11, 2018 A. Bashandy
Cisco
R. Raszuk
Bloomberg LP
U. Chunduri
Huawei
L. Contreras
Telefonica I+D
L. Jalil
Verizon
H. Assarpour
Broadcom
G. Van De Velde
Nokia
J. Tantsura
Individual
S. Ma
Juniper
T. Mizrahi
Marvell
August 10, 2017
Unified Source Routing Instructions using MPLS Label Stack
draft-xu-mpls-unified-source-routing-instruction-03
Abstract
MPLS Segment Routing (SR-MPLS in short) is an MPLS data plane-based
source routing paradigm in which a sender of a packet is allowed to
partially or completely specify the route the packet takes through
the network by imposing stacked MPLS labels to the packet. SR-MPLS
could be leveraged to realize a unified source routing mechanism
across MPLS, IPv4 and IPv6 data planes by using an MPLS label stack
as a unified source routing instruction set while preserving backward
compatibility with SR-MPLS.
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
Xu, et al. Expires February 11, 2018 [Page 1]
Internet-Draft USR August 2017
working documents as Internet-Drafts. The list of current Internet-
Drafts is at http://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 February 11, 2018.
Copyright Notice
Copyright (c) 2017 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
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
1.1. Requirements Language . . . . . . . . . . . . . . . . . . 3
2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 3
3. Use Cases . . . . . . . . . . . . . . . . . . . . . . . . . . 3
4. Packet Forwarding Procedures . . . . . . . . . . . . . . . . 4
4.1. Forwarding Entry Construction . . . . . . . . . . . . . . 5
4.2. Packet Forwarding Procedures . . . . . . . . . . . . . . 6
5. Signalling Considerations . . . . . . . . . . . . . . . . . . 9
6. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 9
7. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 9
8. Security Considerations . . . . . . . . . . . . . . . . . . . 9
9. References . . . . . . . . . . . . . . . . . . . . . . . . . 10
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