The IPv6 Compressed Routing Header (CRH)
draft-bonica-6man-comp-rtg-hdr-05
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6man R. Bonica
Internet-Draft Juniper Networks
Intended status: Standards Track Y. Kamite
Expires: January 6, 2020 NTT Communications Corporation
T. Niwa
KDDI
A. Alston
D. Henriques
Liquid Telecom
N. So
F. Xu
Reliance Jio
G. Chen
Baidu
Y. Zhu
G. Yang
China Telecom
Y. Zhou
ByteDance
July 5, 2019
The IPv6 Compressed Routing Header (CRH)
draft-bonica-6man-comp-rtg-hdr-05
Abstract
This document defines a new IPv6 Routing header type, called the
Compressed Routing Header (CRH). SRv6+ nodes use the CRH to steer
packets from segment to segment along SRv6+ paths.
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 6, 2020.
Bonica, et al. Expires January 6, 2020 [Page 1]
Internet-Draft IPv6 Compressed Routing Header 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
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described in the Simplified BSD License.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Requirements Language . . . . . . . . . . . . . . . . . . . . 3
3. The Compressed Routing Header (CRH) . . . . . . . . . . . . . 3
4. Segment Forwarding Information Base (SFIB) . . . . . . . . . 5
5. Processing Rules . . . . . . . . . . . . . . . . . . . . . . 5
5.1. General . . . . . . . . . . . . . . . . . . . . . . . . . 5
5.2. CRH Specific . . . . . . . . . . . . . . . . . . . . . . 6
5.2.1. Computing Minimum CRH Length . . . . . . . . . . . . 7
5.2.2. Strictly-Routed Topological Instructions . . . . . . 8
5.2.3. Loosely-Routed Topological Instructions . . . . . . . 9
6. Mutability . . . . . . . . . . . . . . . . . . . . . . . . . 9
7. Compliance . . . . . . . . . . . . . . . . . . . . . . . . . 9
8. Management Considerations . . . . . . . . . . . . . . . . . . 9
9. Security Considerations . . . . . . . . . . . . . . . . . . . 10
10. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 10
11. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 10
12. References . . . . . . . . . . . . . . . . . . . . . . . . . 10
12.1. Normative References . . . . . . . . . . . . . . . . . . 10
12.2. Informative References . . . . . . . . . . . . . . . . . 11
Appendix A. CRH Processing Examples . . . . . . . . . . . . . . 11
A.1. Loose Source Routing . . . . . . . . . . . . . . . . . . 13
A.2. Loose Source Routing Preserving The First SID . . . . . . 13
A.3. Strict Source Routing . . . . . . . . . . . . . . . . . . 14
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