Table of Contents
FOREWORD
CONTENTS
1Scope
2References
3Termsanddefinitions
4Abbreviations
5ASONroutingarchitecture
5.1Fundamentalconcepts
5.2Routingarchitectureandfunctionalcomponents
5.2.1Considerationsfordifferentprotocols
5.2.2ConsiderationsformultipleVPNs
5.2.3Considerationsforpolicy
5.3Routingareahierarchies
5.3.1Routingperformerrealizationinrelationto
routingAreahierarchies
5.3.2CorrespondencebetweenLRMandRCsfor
hierarchicalroutingareas
6ASONroutingrequirements
6.1Architecturalrequirements
6.2Protocolrequirements
6.3Pathselectionrequirements
7Routingattributes
7.1Nodeattributes
7.1.1Reachabilityattributes
7.1.2Diversityrelatedattributes
7.1.3Otherattributeinformation
7.2Linkattributes
7.2.1Linkstate
7.2.2Diversityrelatedattributes
7.2.3Otherattributeinformation
8Routingmessages
8.1Routingadjacencymaintenance
8.2Routinginformationmessages
8.3Routingexceptionanderrorhandling
8.4Statediagrams
8.4.1Informationelementtransmission
8.4.2Informationelementreception
8.4.3Localinformationelementtransmission
generation
9Routingmessagedistributiontopology
9.1Congruenttopology
9.2Hubbedtopologyusingaroutingmessageserver
9.3Directedtopology
10Pathselection
10.1Inputstopathselection
10.1.1Step-by-steprouting
10.1.2Sourceandhierarchicalrouting
10.2Outputofpathselection
10.3Routingparadigmsandpathselection
AppendixI-Informationflowbetweenlevelsofthe
routinghierarchy
I.1Informationdisseminationrelatedtoresolving
end-pointaddresses
I.1.1Parenttochildinformationflow
I.1.2Childtoparentinformationflow
I.2Informationexchangebetweenhierarchicallevels
forresolvingend-pointaddresses
AppendixII-SharedRiskGroup
II.1Pathdiversity
II.2Networkresourcesandrisksharing
II.3SharedRiskGroup(SRG)
II.4SRGimplicationsforrouting Abstract
Specifies the requirements and architecture for the routing functions used for the establishment of switched connections (SC) and soft permanent connections (SPC) within the framework of the Automatically Switched Optical Network (ASON). Includes topics like the ASON routing architecture, functional components including path selection, routing attributes, abstract messages and state diagrams.
