Segment Routing for Resource Partitioned Virtual Networks
draft-dong-spring-sr-for-enhanced-vpn-06
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2019-12-16
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SPRING Working Group J. Dong
Internet-Draft Huawei Technologies
Intended status: Standards Track S. Bryant
Expires: June 18, 2020 Futurewei Technologies
T. Miyasaka
KDDI Corporation
Y. Zhu
China Telecom
F. Qin
Z. Li
China Mobile
December 16, 2019
Segment Routing for Resource Partitioned Virtual Networks
draft-dong-spring-sr-for-enhanced-vpn-06
Abstract
This document describes the mechanism to associate Segment Routing
Identifiers (SIDs) with network resource attributes. The resource-
aware SIDs retain their original functionality, with the additional
semantics of identifying the set of network resources available for
the packet processing action. These SIDs can be used to build SID
lists with reserved network resources, which can be used for many
network scenarios. One typical use case is to provide SR virtual
networks with required network topology and resource attributes. The
proposed mechanism is applicable to both segment routing with MPLS
data plane (SR-MPLS) and segment routing with IPv6 data plane (SRv6).
Requirements Language
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
document are to be interpreted as described in RFC 2119 [RFC2119].
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
Dong, et al. Expires June 18, 2020 [Page 1]
Internet-Draft SR for VPN+ December 2019
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 June 18, 2020.
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
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Segment Routing with Topology and Resource Awareness . . . . 3
2.1. SR-MPLS . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.2. SRv6 . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3. Control Plane Considerations . . . . . . . . . . . . . . . . 6
4. Procedures . . . . . . . . . . . . . . . . . . . . . . . . . 7
4.1. Virtual Network Topology and Resource Computation . . . . 8
4.2. Network Resource and SID Allocation . . . . . . . . . . . 8
4.3. Construction of SR based Virtual Networks . . . . . . . . 10
4.4. Service to SR Virtual Network Mapping . . . . . . . . . . 11
4.5. Virtual Network Visibility to Customer . . . . . . . . . 11
5. Benefits of the Proposed Mechanism . . . . . . . . . . . . . 12
6. Service Assurance . . . . . . . . . . . . . . . . . . . . . . 13
7. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 13
8. Security Considerations . . . . . . . . . . . . . . . . . . . 13
9. Contributors . . . . . . . . . . . . . . . . . . . . . . . . 14
10. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 14
11. References . . . . . . . . . . . . . . . . . . . . . . . . . 14
11.1. Normative References . . . . . . . . . . . . . . . . . . 14
11.2. Informative References . . . . . . . . . . . . . . . . . 14
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