The IPv6 Compact Routing Header (CRH)
draft-bonica-6man-comp-rtg-hdr-24
6man R. Bonica
Internet-Draft Juniper Networks
Intended status: Standards Track Y. Kamite
Expires: July 11, 2021 NTT Communications Corporation
A. Alston
D. Henriques
Liquid Telecom
L. Jalil
Verizon
January 7, 2021
The IPv6 Compact Routing Header (CRH)
draft-bonica-6man-comp-rtg-hdr-24
Abstract
This document defines two new Routing header types. Collectively,
they are called the Compact Routing Headers (CRH). Individually,
they are called CRH-16 and CRH-32.
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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
5.2. CRH Removal Procedure . . . . . . . . . . . . . . . . . . 8
6. Mutability . . . . . . . . . . . . . . . . . . . . . . . . . 8
7. Applications And SIDs . . . . . . . . . . . . . . . . . . . . 9
8. Management Considerations . . . . . . . . . . . . . . . . . . 9
9. Security Considerations . . . . . . . . . . . . . . . . . . . 9
10. Implementation and Deployment Status . . . . . . . . . . . . 9
11. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 10
12. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 10
13. Contributors . . . . . . . . . . . . . . . . . . . . . . . . 10
14. References . . . . . . . . . . . . . . . . . . . . . . . . . 11
14.1. Normative References . . . . . . . . . . . . . . . . . . 11
14.2. Informative References . . . . . . . . . . . . . . . . . 11
Appendix A. CRH Processing Examples . . . . . . . . . . . . . . 12
A.1. The SID List Contains One Entry For Each Segment In The
Path . . . . . . . . . . . . . . . . . . . . . . . . . . 13
A.2. The SID List Omits The First Entry In The Path . . . . . 14
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 14
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]. This document defines two new
Routing header types. Collectively, they are called the Compact
Routing Headers (CRH). Individually, they are called CRH-16 and CRH-
32.
The CRH allows IPv6 source nodes to specify the path that a packet
takes to its destination. The CRH:
o Can be encoded in relatively few bytes.
o Is designed to operate within a network domain. (See Section 9).
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