IP NGN Carrier Ethernet Overview

Mohammed Elkomy SP Systems Engineer, Cisco

IP NGN Carrier Ethernet Architecture Overview Next Generation Carrier Ethernet Technologies Ethernet Access Terminology and Services Ethernet Transport over MPLS Ethernet OAM

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

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

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…

Metro Ethernet Forum Services

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)

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

Carrier Ethernet Standards Ethernet Transport over MPLS

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)

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

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

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

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

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

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 21.86 No PMD-Injection 129.62 122.51 125.90 MPLS FRR, IP FRR, IS-IS Fast Convergence: All Achieve Near Zero Outage for Slow Failures

OAM benchmarks Set by TDM and existing WAN technologies Operational efficiency Reduce OPEX, avoid truck-rolls Downtime cost Management complexity Large span networks Multiple constituent networks belong to disparate organizations/companies

Performance Fault Performance Fault Management Management Management Management Performance PerforPemancerformance Fault Performance Fault Management Management ManManaaMaggenaegemmemennt entt Management Configuration ConfiguratioConfiguratioCoManfignauragetmioennt nn Management isco ManManaaggeemmenentt Se I C rvi M-LIM c LE Configuration e - Configuration Management L E Management ay LAs er IP S 1 N .173 etw ag/Y or 02.1 k L 8 ay er Tra ns po ah rt L 2.3 ay 80 er FaultFault Performance Fault Performance Fault Management Management Management MMananaaMagenaggeememenntmentt

Configuration Configuration Management Management

TECOPT-2100_c1 © 2009 Cisco Systems, Inc. All rights reserved. Cisco Public 21 Ethernet OAM Building Blocks IEEE 802.1ag Connectivity Fault Management (CFM) Also referred as service OAM IEEE 802.3ah Ethernet link OAM Also referred as 802.3 OAM, link OAM, or Ethernet in the First Mile (EFM) OAM ITU-T Y.1731 OAM functions and mechanisms for Ethernet-based networks MEF E-LMI Ethernet local-management interface

Business Business Backbone Backbone Bridges Bridges Provider Provider Bridges Bridges

Residential MPLS Residential OAM Ethernet IP/MPLS Link OAM

UNI NNI NNI NNI UNI E-LMI—User to Network Interface (UNI) Link OAM—any point-point 802.3 link CFM—end-to-end UNI to UNI MPLS OAM—within MPLS cloud

Ethernet Private Line (EPL) Replaces a TDM private line Ethernet Private LAN (EP-LAN) Dedicated UNIs for point-to-point connections Supports dedicated UNIs Single Ethernet Virtual Connection (EVC) per UNI Supports transparent LAN services The most popular Ethernet service due to its simplicity Supports multipoint Layer 2 VPNs E-LINE Services E-LAN Services

Ethernet Virtual Private Line (EVPL) Replaces Frame Relay or ATM services Supports service multiplexed UNIs (i.e., multiple EVCs per UNI) Ethernet Virtual Private LAN (EVP-LAN) Allows single physical connection (UNI) to customer Supports service-multiplexed UNIs premise equipment for multiple virtual connections Supports multipoint Layer 2 VPNs

VLAN-based service MEF Ethernet virtual MEF—EVPL private line MEF service attributes: UNI UNI Service multiplexing Optional CE-VLAN CEN ID preservation Can be supported using DSL, Ethernet and WiMAX access

Sample SP offerings: UNI Branch office VPN L3 VPN access Internet access

Port-based service 802.1Q tunneling UNI MEF—EPL Control protocol tunneling MEF service attributes: UNI No service multiplexing UNI All-to-one bundling CEN CE-VLAN ID preservation High degree of transparency Supported with Ethernet access UNI Sample SP offerings: Data center Business connectivity Network consolidation

Multipoint-to-multipoint (e-LAN) MEF—ELAN VLAN-based service MEF service attributes: Service multiplexing Optional CE-VLAN CEN ID preservation Can be supported using DSL, Ethernet and WiMAX access Sample SP offerings MP branch office L2VPN Concurrent IP VPN access Disaster recovery

Port-based service 802.1Q tunneling UNI MEF—ELAN Layer 2 protocol tunneling

MEF service attributes: UNI UNI No service multiplexing All-to-one bundling CEN CE-VLAN ID preservation High degree of transparency Can be supported only with Ethernet access UNI Sample SP offerings: Campus LAN extension Data center disaster recovery