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Cisco ArchitectureCarrier EthernetServices, Architecturesand ProductsCassio GomesSystems EngineerCCIE #13900 (R&S and SP)Presentation ID 2006 Cisco Systems, Inc. All rights reserved.Cisco Confidential1

Agenda Introduction Metro Ethernet Services & Designs Cisco IP NGN Architecture - Metro Ethernet Operational Considerations Metro Ethernet Switching ProductsPresentation ID 2006 Cisco Systems, Inc. All rights reserved.Cisco Confidential2

“The Connected Life”Pela manhã – Vamos a TrabalharTel. celular ou PDA para assistirTV no trem, ou programar ogravador de vídeo para a noiteUsando Tel. celular comoBilhete, cartão ou ticketCriançar jogando online,acessando páginas decomunidades virtuaisPresentation IDNoite – Em casa ou na cidade 2006 Cisco Systems, Inc. All rights reserved.Procurando as criançasusando GSP na TV.Cisco ConfidentialDia - EscritórioReunião via TelepresençaAssistindo concertos, filmesou atendendo a chamadasna TV3

Perfil de cliente e a Matriz de tráfego estão mudando20042008Aparecimentode Video / IPTV24,500 TB/mês654,000 TB/mêsConsumer FTTH(TB / month)47% CAGRBusiness DSLIP VPNPrivate Line(IP Portion)ATM / FR(IP Portion)Ethernet172,000 TB/mêsPresentation ID93% CAGRConsumer Broadband(TB / month)Consumer VoIP(TB / month)ConsumerIPTV / VoDCorporativoResidencialNovas Demandas, Novas oportunidades 2006 Cisco Systems, Inc. All rights reserved.1,190,000 TB/mêsCisco ConfidentialProliferaçãode acessobanda largacorporativo.Source: Cisco Estimates, Ovum, Bernstein, Public Company Data4

O que buscamos com Carrier Ethernet? Sistemas fim-a-fim – Una arquitetura com elementos de hardwaree software para redes de agregação basedas em Ethernet. Soluções padronizadas - MEF, IEEE, IETF, ITU-T and DSL Forum Rede Convergente – serviços residenciais, corporativos e“wholesale” para provedores móveis e fixos, sobre uma infraestrutura única de rede Carrier Ethernet. Otimização de serviços – usar ao máximo agregação baseada emtecnologia MPLS, Ethernet Virtual Circuit (EVC), IntelligentSubscriber Gateway (ISG) e tecnologias de transporte quediferenciam as aplicações provendo escalabilidade e resiliência. Solução orientada a um sistema – documentado, testado edisponível junto com os elementos de hardware, software e asolução de gerência que fazem parte da solução. Desenvolvimento contínuo – buscando sempre suportar novosmodelos de negócio, mais escalabilidade, resiliência e inovação.Presentation ID 2006 Cisco Systems, Inc. All rights reserved.Cisco Confidential5

Cisco ArchitectureCarrier EthernetMetro Ethernet Services & Design ConsiderationsPresentation ID 2006 Cisco Systems, Inc. All rights reserved.Cisco Confidential6

A 3-Step Approach to Carrier-Ethernet StandardsEvolution1222132Carrier Ethernet Services and UNIArchitectures for Layer-2 Services & Ethernet Access3Operations, Administration, Maintenance1Presentation IDIEEE Provider Bridges, Provider Backbone Bridges, Evolutionand related ConceptsIETF VPLS Evolution and related ConceptsE-LMI, physical OAMService-OAM 2006 Cisco Systems, Inc. All rights reserved.Cisco Confidential7

Building an Carrier-Ethernet Service NetworkAreas to Be sCoreBackboneBridgesResidentialUNI Definition Customer STPand BPDU handling 802.1x, 802.3x,802.3ad Dual Homing Customer’sGVRP, GMRP, LLDP, Presentation sIP/MPLSHow to Build theEthernet Access Minor changes tostandard IEEE bridges Customer VLAN transp. MAC address scalability Redundancy OAM&P, 2006 Cisco Systems, Inc. All rights reserved.Cisco ConfidentialHow to Build theInterconnect Media MPLS/L2TPv3 Redundancyaddress withdrawal PW – encap & signal. Auto-Discovery OAM&P, CustomerResidentialHow to Connect theEA & IM Networks Redundancy,Interaction w/ PWs Dual-Homing Backdoor links STP & address scaling OAM&P, 8

SP Ethernet Cooks - Who does what?Focus on the User-Perspective: Ethernet Services, UNI, TrafficEngineering, E-LMI, .Building Ethernet-Access (and beyond) Networks: Provider Bridges(802.1ad); Connectivity Management – OAM: 802.1ag, 802.1ahBackbone Bridges, 802.1ak Multiple Registration Protocol, 802.1ajMedia Converters, 802.1aq Shortest Path Bridging, etc.L2VPN, PWE3 WG – Building the Network Core: VPWS, VPLSSG15/Q12, SG13/Q3; Architecture of Ethernet Layer Networks,Services etc. – from a Transport perspective. E2E OAM.Ethernet to Frame-Relay/ATM Service InterworkingDSL related architecture & transport aspects (TR-101):BRAS-requirements, Ethernet Aggregation / TR-59 evolution,subscriber session handling, Presentation ID 2006 Cisco Systems, Inc. All rights reserved.Cisco Confidential9

Metro Ethernet Architectureand TerminologyEfficientAccessFull ServiceCustomerEquipmentIntegrated SystemLarge Scale IntelligentMultiserviceAggregation EdgeCoreIntelligentEdgeEfficientAccessFull ServiceCustomerEquipmentSiU-PEMetro A10/100/1000 MbpsMetro CPE-AGGGE RingSiPMPLS/IP/TDMMetro BN-PEDWDM/CDWMNetwork Facing Provider Edge (N-PE) 2006 Cisco Systems, Inc. All rights reserved.PN-PEU-PEPresentation IDPCisco ConfidentialPHub and10/100/Spoke1000 MbpsU-PEN-PE10/100/1000 MbpsGE RingEoMPLSU-PE10/100/1000 MbpsMetro D10

Metro Ethernet TerminologyU-PECEHAGUNIDistributed PEPresentation IDPMPLSCorePN-PEU-PECEHAGCESingle PEEthernet Virtual Circuit (EVC)UNIPMEFTerminologyPEPE--AGG N-PECustomer Equipment (a.k.a. CPE)Home Access Gateway (res. CPE)HAGUNIUser Network InterfaceProvider MPLS P RoutersU-PE User Provider EdgePEPE--AGG Provider Edge AggregationN-PE Network Provider Edge 2006 Cisco Systems, Inc. All rights reserved.Cisco Confidential11

Each Ethernet Service Instance Is anEthernet Virtual Connection (EVC)1 Point to Point EVC13 RootedMultipoint EVC2Multipoint toMultipoint EVC23xRooted Multipoint EVC can be implementedusing “Private-VLANs”. Earlier IETF work:draft-sanjib-private-vlan Service frames cannot leak in or out of an EVC Multiple EVCs can exist at a UNI, called service multiplexingEthernet VirtualConnection (EVC)Presentation IDVLANtransparency 2006 Cisco Systems, Inc. All rights reserved.Layer 2 Control ProtocolTunnelling / ProcessingCisco ConfidentialBundlingServiceMultiplexing12

Service MultiplexingServiceMultiplexed UNI(One to One Mapping)5NA8 9N2LVLV A A NV LVLAN 5VLAN 8VLAN 23 UNIATTRIBUTESVLAN 29VLAN 8VLAN 23Multiple EVCs may exist at the UNIPossible Implementations1. Each CE-VLAN mapped to a unique EVC (One to One Mapping)2. Two or more CE-VLANs mapped to an EVC (Bundling)Presentation ID 2006 Cisco Systems, Inc. All rights reserved.Cisco Confidential13

All to One BundlingUNIATTRIBUTES All the CE-VLAN IDs are mapped to one EVC (see EVC 1) Only one EVC can exist at the UNI All to One Bundling is not compatible with Service MultiplexingPresentation ID 2006 Cisco Systems, Inc. All rights reserved.Cisco Confidential14

802.1Q Tunnelling (aka Q-in-Q) ImplementationFull ServiceCustomerCEEquipmentIntegrated SystemEfficientLarge Scale igentEfficientEdgeCoreAccessFull ServiceCECustomerEquipmentSiU-PEDMAC SMAC .1Q6 bytes6 bytesPE-AGGLen/4Typebytes 2 bytesData0–1500 bytesN-PEFCS4 bytesN-PEDMAC SMAC .1Q6 bytes6 bytes802.1P6 bytes.1QLen/Data0–1500 bytesCisco ConfidentialFCS4 bytes802.1P802.1P 2006 Cisco Systems, Inc. All rights reserved.FCS4 bytesCEVLAN ID1002 bytes 3 bits 12 bitsEtype0x8100 SP doesn’t coordinate CE VLANs (CE VLANs transparency) CE VLANs can overlap Increased VLAN space (4k VLANs x 4k VLANs)Presentation IDData0–1500 bytesCEVLAN ID1002 bytes 3 bits 12 bits44Typebytes bytes 2 bytesSPVLAN ID2002 bytes 3 bits 12 bitsEtype0x81004Typebytes 2 bytesEtype0x8100DMAC SMAC .1Q6 bytesLen/U-PE802.1PCEVLAN ID1002 bytes 3 bits 12 bitsEtype0x8100P802.1Q Tunneling802.1Q Trunk15

L2 Control ProcessingUNIATTRIBUTESThree alternatives for handling Layer 2 ControlFrames at the UNI:CECE L2 PDUCE L2 PDUCE L2 PDUMetroEthernet NetworkPDUPeer - ProcessDiscard - DropPass - TunnelCE L2 Protocol Data Units may include SpanningTree, CDP and/or VTP PDUsPresentation ID 2006 Cisco Systems, Inc. All rights reserved.Cisco Confidential16

Typical Carrier Ethernet Service PortfolioEthernet Wire Service / Ethernet Private LineEthernet Relay kVLAN BasedPort BasedEthernet Multipoint kPresentation ID 2006 Cisco Systems, Inc. All rights reserved.Ethernet Relay Multipoint ServiceCisco Confidential17

Ethernet Wire Service / Ethernet Private Line(for Reference) FeaturesSimplest Metro Ethernet serviceto deployPoint-to-Point ServiceUNIUNIDedicated bandwidthNo OversubscriptionHigh availability-protectedCarrierEthernetNetworkWell understood SLA—Uptime Sample SP Service OfferingMission criticalUNIData centersBusiness continuityNetwork consolidationPresentation ID 2006 Cisco Systems, Inc. All rights reserved.Cisco Confidential18

Ethernet Relay Service(for Reference) FeaturesService Multiplexing at the UNIScalability for large sitesService tiering based on bandwidth,CoS, Burst, lossFR/ATM InterworkingRecommend a router as CPE device Sample SP Service OfferingBranch Office VPN (L2VPN, F/Requivalent)UNIIP VPN access (L3VPN Intranet/Extranet)Internet (ISP) accessPresentation ID 2006 Cisco Systems, Inc. All rights reserved.Cisco Confidential19

Ethernet Multipoint Service(for Reference) FeaturesMultipoint Layer 2 serviceService Tiering based onbandwidth, CoS, distanceRouters and/or Switches as CPEdevicesUNIUNICarrierEthernetNetwork Sample SP Service OfferingCorporate/campusLAN extensionLAN Extension over WANData Center Disaster RecoveryPresentation ID 2006 Cisco Systems, Inc. All rights reserved.Cisco ConfidentialUNI20

Ethernet Relay Multipoint Service(for Reference) FeaturesService Multiplexing at the UNILayer 2 Multipoint serviceService Tiering based onbandwidth, CoS, distanceRecommend a router as CPEdeviceCarrierEthernetNetwork Sample SP Service OfferingMP Branch Office VPN (L2VPN)Concurrent IP VPN access(L3VPN - Intranet/Extranet)Internet (ISP) accessDisaster RecoveryPresentation ID 2006 Cisco Systems, Inc. All rights reserved.Cisco Confidential21

Overview of Ethernet-Based ServicesETHERNET-BASED SERVICESLayer 1Layer ice(EPL)(EWS)MEF: EPLLayer RelayServiceServiceMultipoint(ERS)(EMS)ServiceMEF: EVPLMEF: EE-LANMPLSVPNL3 VPNHybrid EMS ERSTransparent LAN ServiceUses Ethernet to Deliver a Frame Relay-type ServiceSimilar to Private Line but Involves Stat MuxingL1 Service for Transporting EthernetEPL: Ethernet Private Line, EVPL: Ethernet Virtual Private Line, E-LAN: Ethernet LANPresentation ID 2006 Cisco Systems, Inc. All rights reserved.Cisco Confidential22

Virtual Private Wire Service (VPWS)Reference ModelCustomerSiteCustomerSitePSN mulated ServiceCustomerSiteA Pseudowire (PW) Is a Connection Between Two Provider Edge (PE) DevicesWhich Connects Two Pseudowire End-Services (PWESs) of the Same TypeService Types: Ethernet HDLC 802.1Q (VLAN)PWES ATM VC or VPPresentation ID 2006 Cisco Systems, Inc. All rights reserved.Cisco Confidential PPP Frame Relay VC23

Virtual Private Wire Service (VPWS)Customer PerspectiveCE2CE1CE3CE5CE4 Point-to-point connections between Provider Edge (PE) nodes Same look and feel as existing L2 PVCs (i.e., Frame Relay point-to-point) Service provider simply forwards incoming frames based on layer 2 information (i.e.DLCI, VLAN tag, VPI/VCI, etc.)Presentation ID 2006 Cisco Systems, Inc. All rights reserved.Cisco Confidential24

Virtual Private LAN Service (VPLS)Reference ModelCustomerSitePEPECustomerSiteMPLSFull Mesh ofPseudowiresAttachment VCs AreEthernetCustomerSiteA Full Mesh of Pseudowires (PW) Is Used to Connect All Provider Edge (PE)Devices Which Support a Given VPLS VPNPresentation ID 2006 Cisco Systems, Inc. All rights reserved.Cisco Confidential25

Virtual Private LAN Service (VPLS)Customer PerspectiveAll PEs Appear Connected on aCommon SwitchCE1CE3CE2CE4 Multipoint-to-multipoint configuration Forwarding of frames based on learned MAC addresses Uses Virtual Switching Instances (VSI) for customer separationPresentation ID 2006 Cisco Systems, Inc. All rights reserved.Cisco Confidential26