OSPFv2 Link Traffic Engineering (TE) Attribute Reuse
draft-ietf-ospf-te-link-attr-reuse-00
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Network Working Group P. Psenak
Internet-Draft A. Lindem
Intended status: Standards Track L. Ginsberg
Expires: February 22, 2018 Cisco Systems
W. Henderickx
Nokia
J. Tantsura
Individual
H. Gredler
RtBrick Inc.
August 21, 2017
OSPFv2 Link Traffic Engineering (TE) Attribute Reuse
draft-ietf-ospf-te-link-attr-reuse-00.txt
Abstract
Various link attributes have been defined in OSPFv2 in the context of
the MPLS Traffic Engineering (TE) and GMPLS. Many of these link
attributes can be used for purposes other than MPLS Traffic
Engineering or GMPLS. This documents defines how to distribute such
attributes in OSPFv2 for applications other than MPLS Traffic
Engineering or GMPLS purposes.
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
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Internet-Drafts are draft documents valid for a maximum of six months
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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 February 22, 2018.
Copyright Notice
Copyright (c) 2017 IETF Trust and the persons identified as the
document authors. All rights reserved.
Psenak, et al. Expires February 22, 2018 [Page 1]
Internet-Draft OSPFv2 Link TE Attributes Reuse August 2017
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1. Requirements notation . . . . . . . . . . . . . . . . . . 3
2. Link attributes examples . . . . . . . . . . . . . . . . . . 3
3. Advertising Link Attributes . . . . . . . . . . . . . . . . . 4
3.1. TE Opaque LSA . . . . . . . . . . . . . . . . . . . . . . 4
3.2. Extended Link Opaque LSA . . . . . . . . . . . . . . . . 5
3.3. Selected Approach . . . . . . . . . . . . . . . . . . . . 5
4. Reused TE link attributes . . . . . . . . . . . . . . . . . . 6
4.1. Remote interface IP address . . . . . . . . . . . . . . . 6
4.2. Link Local/Remote Identifiers . . . . . . . . . . . . . . 6
4.3. Shared Risk Link Group (SRLG) . . . . . . . . . . . . . . 7
4.4. Extended Metrics . . . . . . . . . . . . . . . . . . . . 7
5. Advertisement of Application Specific Values . . . . . . . . 7
6. Deployment Considerations . . . . . . . . . . . . . . . . . . 10
7. Attribute Advertisements and Enablement . . . . . . . . . . . 10
8. Backward Compatibility . . . . . . . . . . . . . . . . . . . 11
9. Security Considerations . . . . . . . . . . . . . . . . . . . 11
10. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 12
11. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 12
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