Synonymous Flow Label Framework
draft-ietf-mpls-sfl-framework-05
MPLS Working Group S. Bryant
Internet-Draft Fururewei Technologies Inc
Intended status: Informational M. Chen
Expires: January 30, 2020 Z. Li
Huawei
G. Swallow
Southend Technical Center
S. Sivabalan
Cisco Systems
G. Mirsky
ZTE Corp.
July 29, 2019
Synonymous Flow Label Framework
draft-ietf-mpls-sfl-framework-05
Abstract
RFC 8372 describes the requirement for introducing flow identities
within the MPLS architecture. This document describes a method of
accomplishing this by using a technique called Synonymous Flow Labels
in which labels which mimic the behaviour of other labels provide the
identification service. These identifiers can be used to trigger
per-flow operations on the on the packet at the receiving label
switching router.
Status of This Memo
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This Internet-Draft will expire on January 30, 2020.
Bryant, et al. Expires January 30, 2020 [Page 1]
Internet-Draft MPLS FL July 2019
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Requirements Language . . . . . . . . . . . . . . . . . . . . 3
3. Synonymous Flow Labels . . . . . . . . . . . . . . . . . . . 3
4. User Service Traffic in the Data Plane . . . . . . . . . . . 4
4.1. Applications Label Present . . . . . . . . . . . . . . . 4
4.1.1. Setting TTL and the Traffic Class Bits . . . . . . . 5
4.2. Single Label Stack . . . . . . . . . . . . . . . . . . . 5
4.2.1. Setting TTL and the Traffic Class Bits . . . . . . . 6
4.3. Aggregation of SFL Actions . . . . . . . . . . . . . . . 6
5. Equal Cost Multipath Considerations . . . . . . . . . . . . . 7
6. Privacy Considerations . . . . . . . . . . . . . . . . . . . 8
7. Security Considerations . . . . . . . . . . . . . . . . . . . 8
8. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 8
9. References . . . . . . . . . . . . . . . . . . . . . . . . . 8
9.1. Normative References . . . . . . . . . . . . . . . . . . 8
9.2. Informative References . . . . . . . . . . . . . . . . . 9
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 9
1. Introduction
[RFC8372] describes the requirement for introducing flow identities
within the MPLS architecture.
This document describes a method of accomplishing this by using a
technique called Synonymous Flow Labels (SFL) (see (Section 2)) in
which labels which mimic the behaviour of other labels provide the
identification service. These identifiers can be used to trigger
per-flow operations on the packet at the receiving label switching
router.
Bryant, et al. Expires January 30, 2020 [Page 2]
Internet-Draft MPLS FL July 2019
2. Requirements Language
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
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