Synonymous Flow Label Framework
draft-bryant-mpls-sfl-framework-05
MPLS Working Group S. Bryant
Internet-Draft M. Chen
Intended status: Informational Z. Li
Expires: December 28, 2017 Huawei
G. Swallow
S. Sivabalan
Cisco Systems
G. Mirsky
Ericsson
June 26, 2017
Synonymous Flow Label Framework
draft-bryant-mpls-sfl-framework-05
Abstract
draft-ietf-mpls-flow-ident 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 December 28, 2017.
Copyright Notice
Copyright (c) 2017 IETF Trust and the persons identified as the
document authors. All rights reserved.
Bryant, et al. Expires December 28, 2017 [Page 1]
Internet-Draft MPLS FI June 2017
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Requirements Language . . . . . . . . . . . . . . . . . . . . 2
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
[I-D.ietf-mpls-flow-ident] 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.
2. Requirements Language
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
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