Distribution of Traffic Engineering (TE) Policies and State using BGP-LS
draft-ietf-idr-te-lsp-distribution-06
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2017-01-06
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Network Working Group S. Previdi, Ed.
Internet-Draft Cisco Systems, Inc.
Intended status: Standards Track J. Dong, Ed.
Expires: July 10, 2017 M. Chen
Huawei Technologies
H. Gredler
RtBrick Inc.
J. Tantsura
Individual
January 6, 2017
Distribution of Traffic Engineering (TE) Policies and State using BGP-LS
draft-ietf-idr-te-lsp-distribution-06
Abstract
This document describes a mechanism to collect the Traffic
Engineering and Policy information that is locally available in a
router and advertise it into BGP-LS updates. Such information can be
used by external components for path computation, re-optimization,
service placement, network visualization, etc.
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 http://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
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 July 10, 2017.
Previdi, et al. Expires July 10, 2017 [Page 1]
Internet-Draft MPLS TE LSP State Distribution using BGP January 2017
Copyright Notice
Copyright (c) 2017 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
(http://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents
carefully, as they describe your rights and restrictions with respect
to this document. Code Components extracted from this document must
include Simplified BSD License text as described in Section 4.e of
the Trust Legal Provisions and are provided without warranty as
described in the Simplified BSD License.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Carrying TE Policy Information in BGP . . . . . . . . . . . . 5
2.1. TE Policy Information . . . . . . . . . . . . . . . . . . 5
2.2. TE Policy NLRI . . . . . . . . . . . . . . . . . . . . . 5
2.2.1. TE Policy Descriptors . . . . . . . . . . . . . . . . 6
2.3. TE Policy State . . . . . . . . . . . . . . . . . . . . . 12
2.3.1. RSVP Objects . . . . . . . . . . . . . . . . . . . . 14
2.3.2. PCE Objects . . . . . . . . . . . . . . . . . . . . . 15
2.3.3. SR TE Policy Sub-TLVs . . . . . . . . . . . . . . . . 15
3. Operational Considerations . . . . . . . . . . . . . . . . . 21
4. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 22
4.1. BGP-LS NLRI-Types . . . . . . . . . . . . . . . . . . . . 22
4.2. BGP-LS Protocol-IDs . . . . . . . . . . . . . . . . . . . 22
4.3. BGP-LS Descriptors TLVs . . . . . . . . . . . . . . . . . 22
4.4. BGP-LS LSP-State TLV Protocol Origin . . . . . . . . . . 23
5. Security Considerations . . . . . . . . . . . . . . . . . . . 23
6. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 23
7. References . . . . . . . . . . . . . . . . . . . . . . . . . 23
7.1. Normative References . . . . . . . . . . . . . . . . . . 24
7.2. Informative References . . . . . . . . . . . . . . . . . 25
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 26
1. Introduction
In many network environments, traffic engineering policies are
instantiated into various forms:
o MPLS Traffic Engineering Label Switched Paths (TE-LSPs).
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