OSPF Routing Extension for Links with Variable Discrete Bandwidth
draft-ietf-ccamp-ospf-availability-extension-04
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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: August 2016 February 19, 2016
OSPF Routing Extension for Links with Variable Discrete Bandwidth
draft-ietf-ccamp-ospf-availability-extension-04.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 in OSPF routing protocol. This extension can be
used for route computation in a network that contains links with
variable discrete bandwidth.
Status of this Memo
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Long, et al. Expires August 19, 2016 [Page 1]
Internet-Draft OSPF -- Availability extension February 2016
This Internet-Draft will expire on August 19, 2016.
Copyright Notice
Copyright (c) 2016 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
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Table of Contents
1. Introduction ................................................ 3
2. Overview .................................................... 3
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 ......................................... 5
6. References .................................................. 5
6.1. Normative References.................................... 5
6.2. Informative References.................................. 6
7. Acknowledgments ............................................. 6
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].
The following acronyms are used in this draft:
OSPF Open Shortest Path First
PSN Packet Switched Network
SNR Signal-to-noise Ratio
LSP Label Switched Path
Long, et al. Expires August 19, 2016 [Page 2]
Internet-Draft OSPF -- Availability extension February 2016
ISCD Interface Switching Capacity Descriptor
LSA Link State Advertisement
1. Introduction
Some data communication technologies, e.g., microwave, and copper,
allow seamless change of maximum physical bandwidth through a set of
known discrete values. The parameter availability [G.827, F.1703,
P.530] is often used to describe the link capacity during network
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