SRv6 network programming using Unified Identifier
draft-mirsky-spring-unified-id-network-programming-00
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SPRING C. Weiqiang
Internet-Draft China Mobile
Intended status: Informational G. Mirsky
Expires: September 7, 2020 ZTE Corp.
L. Aihua
P. Shaofu
ZTE Corporation
March 6, 2020
SRv6 network programming using Unified Identifier
draft-mirsky-spring-unified-id-network-programming-00
Abstract
This draft describes how Unified Segment Identifier can be used to
achieve the goals of SRv6 network programming.
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 September 7, 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
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include Simplified BSD License text as described in Section 4.e of
Weiqiang, et al. Expires September 7, 2020 [Page 1]
Internet-Draft Unified Identifier SRv6 programming March 2020
the Trust Legal Provisions and are provided without warranty as
described in the Simplified BSD License.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
1.1. Conventions used in this document . . . . . . . . . . . . 2
1.1.1. Terminology . . . . . . . . . . . . . . . . . . . . . 3
1.1.2. Requirements Language . . . . . . . . . . . . . . . . 3
2. SRv6 Network Programming using U-SID . . . . . . . . . . . . 3
2.1. SRv6 Network Programming . . . . . . . . . . . . . . . . 3
2.2. SRv6 Network Programming Using 32bit U-SID . . . . . . . 4
2.3. U-SID with MPLS Programming Process . . . . . . . . . . . 5
2.3.1. U-SID with MPLS Support Programming using Flavors . . 5
2.4. U-SID with SRv6 Programming process . . . . . . . . . . . 6
2.5. U-SID Complementary Method . . . . . . . . . . . . . . . 6
3. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 7
4. Security Considerations . . . . . . . . . . . . . . . . . . . 7
5. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 7
6. Normative References . . . . . . . . . . . . . . . . . . . . 7
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 8
1. Introduction
Segment Routing architecture [RFC8402] leverages the paradigm of
source routing. It can be realized in a network data plane by
prepending the packet with a list of instructions, a.k.a. Segment
Identifiers (SIDs). A segment can be encoded as a Multi-Protocol
Label Switching (MPLS) label, IPv4 address, or IPv6 address. Segment
Routing can be applied in MPLS data plane by encoding 20-bits SIDs in
MPLS label stack [RFC8660]. It also can be applied to IPv6 data
plane by encoding a list of 128-bits SIDs in IPv6 Segment Routing
Extension Header (SRH) [I-D.ietf-6man-segment-routing-header].
Unified SID [I-D.mirsky-6man-unified-id-sr] defines an extension of
SRH that enables the use of a shorter segment identifier, such as
32-bits Label format SID or 32-bits IP address format SID.
SRv6 network programming is defined
[I-D.ietf-spring-srv6-network-programming]. SRv6 network programming
can be supported using Unified SID.
1.1. Conventions used in this document
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Internet-Draft Unified Identifier SRv6 programming March 2020
1.1.1. Terminology
SR: Segment Routing
SRH: Segment Routing Extension Header
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