The IPv6 Compressed Routing Header (CRH)
draft-bonica-6man-comp-rtg-hdr-14
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6man R. Bonica
Internet-Draft Juniper Networks
Intended status: Standards Track Y. Kamite
Expires: October 5, 2020 NTT Communications Corporation
T. Niwa
KDDI
A. Alston
Liquid Telecom
L. Jalil
Verizon
April 3, 2020
The IPv6 Compressed Routing Header (CRH)
draft-bonica-6man-comp-rtg-hdr-14
Abstract
This document defines two new Routing header types. Collectively,
they are called the Compressed Routing Headers (CRH). Individually,
they are called CRH-16 and CRH-32.
Status of This Memo
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This Internet-Draft will expire on October 5, 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
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
Bonica, et al. Expires October 5, 2020 [Page 1]
Internet-Draft IPv6 Compressed Routing Header April 2020
carefully, as they describe your rights and restrictions with respect
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Requirements Language . . . . . . . . . . . . . . . . . . . . 3
3. The Compressed Routing Headers (CRH) . . . . . . . . . . . . 3
4. The CRH Forwarding Information Base (CRH-FIB) . . . . . . . 5
5. Processing Rules . . . . . . . . . . . . . . . . . . . . . . 6
5.1. Computing Minimum CRH Length . . . . . . . . . . . . . . 7
6. Mutability . . . . . . . . . . . . . . . . . . . . . . . . . 8
7. Applications And SIDs . . . . . . . . . . . . . . . . . . . . 8
8. Management Considerations . . . . . . . . . . . . . . . . . . 9
9. ICMPv6 Considerations . . . . . . . . . . . . . . . . . . . . 9
10. Security Considerations . . . . . . . . . . . . . . . . . . . 9
11. Implementation and Deployment Status . . . . . . . . . . . . 9
12. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 10
13. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 10
14. Contributors . . . . . . . . . . . . . . . . . . . . . . . . 10
15. References . . . . . . . . . . . . . . . . . . . . . . . . . 11
15.1. Normative References . . . . . . . . . . . . . . . . . . 11
15.2. Informative References . . . . . . . . . . . . . . . . . 12
Appendix A. CRH Processing Examples . . . . . . . . . . . . . . 12
Appendix B. CRH Processing Examples . . . . . . . . . . . . . . 13
B.1. The SID List Contains One Entry For Each Segment In The
Path . . . . . . . . . . . . . . . . . . . . . . . . . . 14
B.2. The SID List Omits The First Entry In The Path . . . . . 15
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 15
1. Introduction
IPv6 [RFC8200] source nodes use Routing headers to specify the path
that a packet takes to its destination. The IETF has defined several
Routing header types [IANA-RH]. RH0 [RFC2460] was the first to be
defined and was deprecated [RFC5095] because of security
vulnerabilities.
This document defines two new Routing header types. Collectively,
they are called the Compressed Routing Headers (CRH). Individually,
they are called CRH-16 and CRH-32.
The CRH, like RH0, allows IPv6 source nodes to specify the path that
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