OSPF-TE Link Availability Extension for Links with Variable Discrete Bandwidth
draft-ietf-ccamp-ospf-availability-extension-07
Network Working Group H. Long, M.Ye
Internet Draft Huawei Technologies Co., Ltd
Intended status: Standards Track G. Mirsky
Ericsson
A.D'Alessandro
Telecom Italia S.p.A
H. Shah
Ciena
Expires: April 2017 October 8, 2016
OSPF-TE Link Availability Extension for Links with Variable Discrete
Bandwidth
draft-ietf-ccamp-ospf-availability-extension-07.txt
Abstract
A network may contain links with variable discrete bandwidth, e.g.,
copper, radio, etc. The bandwidth of such links may change
discretely in reaction to changing external environment.
Availability is typically used for describing such links during
network planning. This document introduces an optional ISCD
Availability sub-TLV to extend the Generalized Multi-Protocol Label
Switching (GMPLS) Open Shortest Path First (OSPF) routing protocol.
This extension can be used for route computation in a network that
contains links with variable discrete bandwidth. Note, this document
only covers the mechanisms by which the availability information is
distributed. The mechanisms by which availability information of a
link is determined and the use of the distributed information for
route computation are outside the scope of this document.
Status of this Memo
This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79.
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Drafts.
Internet-Drafts are draft documents valid for a maximum of six
months and may be updated, replaced, or obsoleted by other documents
Long, et al. Expires April 8, 2017 [Page 1]
Internet-Draft Availability extension to OSPF-TE October 2016
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Table of Contents
1. Introduction ................................................ 3
2. Overview .................................................... 4
3. Extension to OSPF Routing Protocol........................... 4
3.1. ISCD Availability sub-TLV............................... 4
3.2. Signaling Process....................................... 5
4. Security Considerations...................................... 5
5. IANA Considerations ......................................... 6
6. References .................................................. 6
6.1. Normative References.................................... 6
6.2. Informative References.................................. 7
7. Acknowledgments ............................................. 8
Conventions used in this document
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].
Long, et al. Expires April 8, 2017 [Page 2]
Internet-Draft Availability extension to OSPF-TE October 2016
The following acronyms are used in this draft:
GMPLS Generalized Multi-Protocol Label Switching
LSA Link State Advertisement
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