Table of Contents
1Introduction
2Scope
3References
3.1Normativereferences
3.2Informativereferences
4Abbreviations
5Network-basedIPVPNoverMPLSreferencemodel
6Servicedefinition
6.1Functionaldefinitionofa"network-basedIP
VPN(overMPLS)"
6.2Quantitativedefinitionofa"network-basedIP
VPN(overMPLS)"
7Servicerequirements
7.1Multi-vendorinteroperability
7.2Servicemanagementcapabilities
7.3Securityfunctions
7.4SupportofvariousQualityofServicerequirements
7.5Supportofvariousroutingprotocols(atedgeand
corelevelsoftheSPnetwork)
7.6Scalableroutingcapabilities
7.7Auto-discovery
7.8SupportofvarioustypesofcustomerIPtraffic
7.9SupportofvariousVPNtopologies
7.10Supportofvariouscustomeraccessscenarios
7.11CEaccesstoPE
7.12AddressingrequirementsandsupportofvariousIP
numberingschemes
7.13Supportofvariousservicedeploymentscenarios
7.14SupportofalliancesofVPNs
7.15ThesolutionshouldallowoutsourcingofIPservices
(e.g.DNS,DHCP)
7.16Reliabilityandfaulttolerance
7.17Efficiency(customerandnetworkresourceutilization)
7.18Nodependencyonthephysicalorlinklayerofthe
ServiceProviderbackbone
7.19(Economicallyandtechnically)smoothmigrationof
customersfrompre-existingVPNserviceofferings
7.20SupportofinterworkingfunctionsbetweenMPLS-based
VPNtechnologyandotherVPNtechnologies
7.21Somenumericalassumptionsforanetwork-basedIP
VPNServiceProvideroffering
7.22AVPNsolutionmaysupportthefollowingservice
requirements
8Frameworkarchitecture
8.1Learningcustomer-sitereachabilityinformation
8.2DistributingVPNreachabilityinformation
8.3Constraineddistributionofroutinginformation
8.4LSPtunnellingestablishmentandusage
9Approachesforsupportofnetwork-basedIPVPNservices
9.1BGP/MPLSVPNapproach
9.2VirtualRouterapproach
10QoSapproaches
10.1"Point-to-Cloud"SLS
10.2"Point-to-Point"SLS
10.3"CoStransparency"
11Inter-AutonomousSystem(Inter-ServiceProvider)VPN
12Interworking
12.1Interworkingbetweendifferentsolutions
12.2ServiceinterworkingwithotherVPNarchitectures
AnnexA-MPLSVPNsovernon-MPLScorenetwork
infrastructures
AppendixI-Examplesofserviceinterworkingwithother
VPNarchitectures
AppendixII-Bibliography Abstract
Specifies service requirements and a number of architectural approaches that are applicable to the provision of network-based virtual private networks by Service Providers using IP technology over an underlying MPLS-based infrastructure.
