IP NGN Carrier Ethernet Overview Mohammed Elkomy SP Systems Engineer, Cisco Presentation_ID © 2009 Cisco Systems, Inc. All rights reserved. Cisco Confidential 1 Agenda IP NGN Carrier Ethernet Architecture Overview Next Generation Carrier Ethernet Technologies Ethernet Access Terminology and Services Ethernet Transport over MPLS Ethernet OAM TECOPT-2100_c1 © 2009 Cisco Systems, Inc. All rights reserved. Cisco Public 2 IP NGN Carrier Ethernet Architecture TECOPT-2100_c1 © 2009 Cisco Systems, Inc. All rights reserved. Cisco Public 3 IP NGN Carrier Ethernet Design Presence- IP Video and Web Mobile Data Center Based Contact Gaming Services Apps Application Telephony Center Layer Self Identity Policy Billing Framework Cisco Service Architectural for User and r Service Service e Application- Framework and Layer Exchange Based Lay Functionality Framework Control Operational Customer Access/ Intelligent Multiservice Network Element Aggregation Edge Core Layer Carrier Ethernet IP NGN Network Layer VoD BNG DPI Billing Physical Agg Instantiation Dist Node Node Location Server NMS MSE Access Aggregation Edge Core OSS/BSS TECOPT-2100_c1 © 2009 Cisco Systems, Inc. All rights reserved. Cisco Public 4 Next Generation Carrier Ethernet Technologies TECOPT-2100_c1 © 2009 Cisco Systems, Inc. All rights reserved. Cisco Public 5 IPNGN Carrier Ethernet Technology Overview Multiple AAA DHCP, DNS EMS NMS Service and Performance Mgmt spanPortalning tree Resilient Ethernet protocol OAM Subsystem Flexible service mapping Business ) Access CarrierEthernet Ethernet virtual Aggregation L2 transportEdge oveAr MPLS Multiservice Core o Corporate Ethernet C connection infrastructure VPLS ( Node S Aggregation U Security features Carrier EthernetI Node AD StandardisationR Residential IP Unicast/Multicast VoD TV SIP Distribution STB Aggregation Node Content Network Node BNG Business Aggregation Network Core Network Corporate 2G/3G Node MPLS/IP Distribution Core IP / MPLS Ethernet adaptation Node Content Network Residential to MPLS and IP DSL Node Aggregation Inter working VPLS Node BNG STB with MST/REP VoD TV SIP Ethernet/MPLS OAM Aggregation Node Business PON Node Corporate IPoDWDM integration Residential IPoDWDM Optical Network STB TECOPT-2100_c1 © 2009 Cisco Systems, Inc. All rights reserved. Cisco Public 6 Carrier Ethernet Cooks— Who Does What? Focus on the User-Perspective: Ethernet Services, UNI, Traffic Engineering, E-LMI… Building Ethernet-Access (and Beyond) Networks: Provider Bridges 802.1ad; Connectivity Management—OAM: 802.1ag, 802.1ah Backbone Bridges, 802.1ak Multiple Registration Protocol, 802.1aj Media Converters, 802.1aq Shortest Path Bridging, etc. L2VPN, PWE3 WG—Building the Network Core: VPWS, VPLS SG15/Q12, SG13/Q3; Architecture of Ethernet Layer Networks, Services etc.—from a Transport Perspective. E2E OAM Ethernet to Frame-Relay/ATM Service Interworking DSL/FttX/Broadband-Related Architecture and Transport Aspects (TR-101), BRAS/BNG Requirements, Ethernet Aggregation/TR-59 Evolution, Subscriber Session Handling, IPv6, Connected Home… TECOPT-2100_c1 © 2009 Cisco Systems, Inc. All rights reserved. Cisco Public 7 Ethernet Access Metro Ethernet Forum Services TECOPT-2100_c1 © 2009 Cisco Systems, Inc. All rights reserved. Cisco Public 8 MEF Concepts and Terminology Ethernet Virtual Connection (EVC) CE CE CE UNI UNI UNI Point-to-Point Multipoint-to-Multipoint Rooted-Multipoint UNI UNI UNI CE UNI CE UNI CE UNI CE CE CE Ethernet virtual connection Conceptual visualization of an Ethernet service (business or infrastructure service) An association of two or more UNIs Three types: Point-to-point EVC (e-line) Multipoint-to-multipoint EVC (e-LAN) Rooted-multipoint EVC (e-tree) TECOPT-2100_c1 © 2009 Cisco Systems, Inc. All rights reserved. Cisco Public 9 MEF Concepts and Terminology UNI Attributes CE CE All CE CE-VLAN UNI UNI subset CE- UNI VLANs UNI UNI UNI UNI UNI UNI CE All-to-One CE Service CE Bundling Bundling Multiplexing Bundling: more than one CE-VLAN on a UNI mapped to an EVC Selective double-tagging/QinQ All-to-one bundling: all CE-VLANs on a UNI mapped to a single EVC Double-tagging/QinQ Service multiplexing: support multiple EVCs over a UNI. EVC selection is based on CE-VLAN value TECOPT-2100_c1 © 2009 Cisco Systems, Inc. All rights reserved. Cisco Public 10 Ethernet Transport Carrier Ethernet Standards Ethernet Transport over MPLS TECOPT-2100_c1 © 2009 Cisco Systems, Inc. All rights reserved. Cisco Public 11 L2 MPLS Transport Two technologies for L2 transport over MPLS: Ethernet over MPLS (EoMPLS) Used for L2 point-to-point link over MPLS cloud No MAC learning involved Virtual Private LAN Services (VPLS) Used for multipoint L2 connections Collection of pseudowires tied together by a Virtual Forwarding Interface (VFI) MAC addresses learned on VFI Traffic forwarding based on destination MAC addresses H-VPLS, an extension of VPLS Can co-exist with L3VPNs (MPLS-VPNs/RFC2547bis) Both L2 and L3 VPNs can leverage traffic engineering with Fast Reroute (TE-FRR) TECOPT-2100_c1 © 2009 Cisco Systems, Inc. All rights reserved. Cisco Public 12 EoMPLS Overview Tunnel VC Ethernet Label Label PDU Pseudowire Ethernet Ethernet PDU PDU MPLS Attachment Circuit Attachment Circuit LDP LDP P P Aggregation Aggregation Node Node Access Node Access Node FTTB CPE Targeted LDP FTTB CPE MPLS in the aggregation network and core Targeted LDP session between PEs to exchange VC label Tunnel label is used to forward packet from PE to PE VC label is used to identify L2VPN circuit Attachment Circuit (AC) can be port-based or VLAN-based TECOPT-2100_c1 © 2009 Cisco Systems, Inc. All rights reserved. Cisco Public 13 MPLS TE Fast Re-Route (FRR) Subsecond recovery IP/MPLS against node/link failures R1 Scalable 1:N protection R8 Greater protection R2 granularity Cost-effective alternative to optical protection Bandwidth protection Primary TE LSP Backup TE LSP TECOPT-2100_c1 © 2009 Cisco Systems, Inc. All rights reserved. Cisco Public 14 VPLS (Virtual Private LAN Services) MPLS Access Aggregation Aggregation Access Node Core Node Node Node VFI VFI Attachment Virtual Circuit VFI Aggregation Forwarding Ethernet Port Node Instance or VLAN Eompls Virtual Circuit (Pseudowire) Attachment Circuit (AC)—connection to aggregation using an Ethernet VLAN Virtual Circuit (Pseudowire)—EoMPLS tunnel between PEs using a full mesh Virtual Forwarding Instance (VFI)—A virtual L2 bridge instance that connects ACs to VCs (PWs); VFI=VLAN=broadcast domain TECOPT-2100_c1 © 2009 Cisco Systems, Inc. All rights reserved. Cisco Public 15 VPLS Traffic Forwarding Example Site B DatDataa SRC:SRC: BA DST:DST: AB Data SRC: B DST: A Site A Data SRC: A DST: B Data SRC: BA DST: AB B1 B2 Data SRC: A DST: B Src MAC Interface A LAN Port Data SRC: A DST: B B VPLS B1 Initial traffic across all pseudowires; MAC address learned Traffic sent to relevant pseudowires On N-PE failure, pseudowires goes down, MACs flushed MAC learning process again TECOPT-2100_c1 © 2009 Cisco Systems, Inc. All rights reserved. Cisco Public 16 How to Build the Ethernet Multipoint/ Multi-Edge Architecture? VPLS or… IP Edge EoMPLS PW PW Bridge Aggregation Node VPLS = LAN emulation EoMPLS Pseudowire (PW) Smells like a LAN, but is not serving as virtual bridge trunk a LAN into a 802.1ad Bridge Domain H-VPLS is just a scaling option, (BD) retains full-mesh notion Idea divorces transport protocols from service instance identifier Combining 802.1ah (PBB) with MPLS pseudowires a future option to scale the amount of service instances TECOPT-2100_c1 © 2009 Cisco Systems, Inc. All rights reserved. Cisco Public 17 Next-Generation Transport Requirements Portal Subscriber Address Policy Carrier Carrier MonitoriCost ng Billing Database Identity ServicesMgmt Definition PreEthernetsence MediationEthernet IP/MPLS P2P Residential Ethernet/ Pt2Pt Yes Yes Policy PlaneL2VPN/ Carrier(p er Subscriber) Pt2MPt Yes No AG TranspEthernetort Access Aggregation L3 ServicesServiceIP/MPLS EdgeMPt2MPt Yes L3 CoreNo P2P Carr Eth Business ATM Yes No Legacy CPE F/R Yes No Services Corporate DSL/ P2P Single P2P and NGN PON CableEtherneTiert Multipoint TransportTDM Yes No Hub and Ethernet Mobile Ethernet Spoke + BroadcastL3VPN Yes No P2P or Ring +P2MP, IP TV, VoD, IP Unicast Yes No FR/ATM Transport MP2MP Biz ServicesVPN, Only Services ATM/FR/TDM E1/ATM Multicast Yes No Ethernet Legacy Services NGN Application Others QoS, OAM&P, Point-to-Point ATM Efficient IP Multicast TE, and Recovery Point-to-MP Frame Relay Efficient VoD Delivery Fast/Zero-Touch Multipoint TDM Call Admission Control Provisioning TECOPT-2100_c1 © 2009 Cisco Systems, Inc. All rights reserved. Cisco Public 18 IP/MPLS Optical Integration—IPoDWDM Working Switchover Protected Working Protect Path Lost Data Path Path Path SR LOF Near-Hitless Port WDM Switch on Port Router BER on BER Router FEC FEC Limit FEC Limit Trans- ponder Protection FEC Trigger Corrected Bits Optical Impairments Corrected Bits Optical Impairments WDM WDM Standard Protection Proactive Protection pre-FEC FRR Fault Packet Loss (ms) Highest Lowest Average IP/OpticalYes Integration Optical-SwEnablesitch the Capability:11.50 11.18 11.37 Yes Noise-Injection 0.02 0.00 0.00 To identifyYes degraded Filinkbre-Pull using optical data11.05 (per-FEC0.00 BER) 3.23 Yes PMD-Injection 0.08 0.00 0.02 StartNo protection (i.e.,Optical-Sw by signalingitch to the11.47 IGP) before11.54 traffic start11.37s failing,No achieving hitlessNoise-Injection protection in many7404.00 cases1193.00 4305.00 No Fibre-Pull 28.81 18.52