OSPF Routing Extension for Links with Variable Discrete Bandwidth
draft-ietf-ccamp-ospf-availability-extension-02

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Document Type Active Internet-Draft (ccamp WG)
Last updated 2015-07-05
Replaces draft-long-ccamp-ospf-availability-extension
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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: January 2016                                      July 6, 2015                               
 
                                      
     OSPF Routing Extension for Links with Variable Discrete Bandwidth 
            draft-ietf-ccamp-ospf-availability-extension-02.txt 

Abstract 

   A packet switching 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 Packet Switched Network (PSN) that 
   contains links with discretely variable bandwidth. 

    

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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   The list of Internet-Draft Shadow Directories can be accessed at 
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   This Internet-Draft will expire on January 6, 2016. 

Copyright Notice 

   Copyright (c) 2015 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 
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Table of Contents 

   1. Introduction ................................................ 3 
   2. Overview .................................................... 4 
   3. Extension to OSPF Routing Protocol........................... 4 
      3.1. Interface Switching Capacity Descriptor................. 4 
      3.2. ISCD Availability sub-TLV............................... 5 
      3.3. Signaling Process....................................... 6 
   4. Security Considerations...................................... 7 
   5. IANA Considerations ......................................... 7 
   6. References .................................................. 7 
      6.1. Normative References.................................... 7 
      6.2. Informative References.................................. 8 
   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]. 

   The following acronyms are used in this draft: 

   OSPF    Open Shortest Path First 

   PSN     Packet Switched Network 

 
 
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   SNR     Signal-to-noise Ratio 

   LSP     Label Switched Path 

   ISCD    Interface Switching Capacity Descriptor 

   PE      Provider Edge 

   LSA     Link State Advertisement 

1. Introduction 

   Some data communication technologies allow seamless change of 
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