Constructs for Carrier Ethernet Networks and Services Ralph Santitoro Director of Carrier Ethernet Market Development, Fujitsu Founding Member and Director, Metro Ethernet Forum

Contents  Carrier Ethernet Ecosystem and Taxonomy  Service Demarcation Constructs (UNI and ENNI)  Virtual Connectivity Constructs (EVC and OVC)  Link and Service Fault Management  Service Types and Service Definitions San José, CA USA February 25, Constructs for Carrier Ethernet Networks and Services

Carrier Ethernet Ecosystem Reliability / Availability G ms EVC Protection 802.3ad UNI & ENNI Protection Ethernet OAM 802.3ah Link Fault Management802.3ah Link Fault Management Y.1731 Service Fault ManagementY.1731 Service Fault Management QoS Performance MEF 10.1 FD, IFDV, FLR Y.1731 Performance Monitoring Standardized Services MEF 6.1 Service DefinitionsMEF 6.1 Service Definitions MEF 10.2 Service AttributesMEF 10.2 Service Attributes San José, CA USA February 25, Constructs for Carrier Ethernet Networks and Services Scalability Layer 2 AggregationLayer 2 Aggregation Statistical MultiplexingStatistical Multiplexing VLAN Tag ReuseVLAN Tag Reuse

Carrier Ethernet Taxonomy Need to put all of this into perspective  Carrier Ethernet is: An Infrastructure technology An Infrastructure technology –Delivered over many types of Layer 1 transport technologies A Service Delivery technology for: A Service Delivery technology for: –Private Lines (Like a Layer 1 service with Ethernet interfaces) –Site-to-site L2 VPNs –Ethernet Access to IP applications and services Confidential - Fujitsu Internal Use Only E-Line, E-LAN, E-Tree, E-Access E-Line, E-LAN, E-Tree, E-Access ApplicationApplication Site-to-Site L2 VPN Video on Demand Private Line Transport Technology Ethernet over Fiber Ethernet over SDH/SONET Ethernet over PDH Ethernet over MPLS Ethernet over WDM Ethernet Connectivity Service Type IP VPN Internet Access IPTVIPTV Ethernet over dry Copper Cloud Service Ethernet over µWave MBHMBH 4 Constructs for Carrier Ethernet Networks and Services Carrier Ethernet augments the familiar Ethernet “LAN” Technology

Ethernet Service Demarcation San José, CA USA February 25,  Ethernet User-to-Network Interface (UNI) Service demarcation between: Service demarcation between: –Retail End-User (Buyer) –Service Provider (Seller)  Ethernet External Network-to-Network Interface (ENNI) Service demarcation between: Service demarcation between: –Service Provider Buyer –Wholesale Service Provider Seller UNIs and ENNIs provide delineation between responsibilities of the buyer and seller of a service Constructs for Carrier Ethernet Networks and Services

Ethernet Service Constructs  Ethernet Virtual Connection (EVC) Logical association between two or more UNIs Logical association between two or more UNIs Retail (end-user) service construct Retail (end-user) service construct  Operator Virtual Connection (OVC) Logical association between either: Logical association between either: –UNI and ENNI –ENNI and ENNI Wholesale (service provider) service construct Wholesale (service provider) service construct San José, CA USA February 25, EVCs describe Virtual Connectivity for Retail services OVCs describe Virtual Connectivity for Wholesale services Constructs for Carrier Ethernet Networks and Services

EVC Types   Multipoint-to-Multipoint EVC   Equivalent to familiar usage of Ethernet in the LAN   Point-to-Point EVC   Makes Ethernet service more like other point-to-point services   TDM private lines   Frame Relay, ATM L2 VPNs   Rooted Multipoint EVC   Root can send to or receive from any Leaf UNI   Leaf UNIs can only send to Root UNI San José, CA USA February 25, Constructs for Carrier Ethernet Networks and Services RMP EVC Leaf UNI Root UNI UNI P2P EVC MP2MP EVC UNI

The “Big Picture” View   UNIs at Subscriber Locations   ENNIs between Wholesale Access Provider and Wholesale Transport Provider Wholesale Transport Provider and Retail Service Provider   OVCs between Subscriber UNI and Wholesale Access Provider ENNI Wholesale Transport Provider ENNIs Retail Service Provider ENNI and Subscriber UNI   EVC between Subscriber UNIs E-NNIE-NNI Wholesale Access Provider E-NNIWholesale Transport Provider Retail Service Provider UNIUNI OVC 1 OVC 2 OVC 3 EVC EVC San José, CA USA February 25, Constructs for Carrier Ethernet Networks and Services Subscriber Subscriber

UNI Attributes Summary Link PHY Type PHY Type Speed Speed MTU size (≥1518) MTU size (≥1518)Service EVC Muxing EVC Muxing CoS ID/C-VID Preservation CoS ID/C-VID Preservation L2CP Handling L2CP Handling C-VID Bundling C-VID Bundling Assign C-VIDs for untagged frames Assign C-VIDs for untagged framesLink PHY Type PHY Type Speed Speed MTU size (≥1518) MTU size (≥1518)Service EVC Muxing EVC Muxing CoS ID/C-VID Preservation CoS ID/C-VID Preservation L2CP Handling L2CP Handling C-VID Bundling C-VID Bundling Assign C-VIDs for untagged frames Assign C-VIDs for untagged frames Basic Link IEEE 802.3ah Fault Management IEEE 802.3ah Fault ManagementService IEEE 802.1ag Continuity Check Msgs. (CCMs) IEEE 802.1ag Continuity Check Msgs. (CCMs) ITU-T Y.1731 MEPs ITU-T Y.1731 MEPs UNI ID UNI IDLink IEEE 802.3ah Fault Management IEEE 802.3ah Fault ManagementService IEEE 802.1ag Continuity Check Msgs. (CCMs) IEEE 802.1ag Continuity Check Msgs. (CCMs) ITU-T Y.1731 MEPs ITU-T Y.1731 MEPs UNI ID UNI ID OAMReliability Link IEEE 802.3ad Link Aggregation (UNI protection) Service ITU-T G.8031 EVC Protection (MEP location) Link IEEE 802.3ad Link Aggregation (UNI protection) Service ITU-T G.8031 EVC Protection (MEP location) San José, CA USA February 25, Constructs for Carrier Ethernet Networks and Services QoS CoS ID EVC C-VLAN PCP DSCP I/E BW Profile Per UNI CoS ID EVC C-VLAN PCP DSCP I/E BW Profile Per UNI

ENNI Attributes Summary Link PHY Type PHY Type Speed Speed MTU size (≥1526) MTU size (≥1526)Service C-VLAN CoS ID Preservation C-VLAN CoS ID Preservation C-VID Preservation C-VID Preservation S-VLAN CoS ID Preservation S-VLAN CoS ID Preservation S-VID Preservation S-VID Preservation L2CP Handling L2CP HandlingLink PHY Type PHY Type Speed Speed MTU size (≥1526) MTU size (≥1526)Service C-VLAN CoS ID Preservation C-VLAN CoS ID Preservation C-VID Preservation C-VID Preservation S-VLAN CoS ID Preservation S-VLAN CoS ID Preservation S-VID Preservation S-VID Preservation L2CP Handling L2CP Handling Basic Link IEEE 802.3ah Fault Management IEEE 802.3ah Fault ManagementService IEEE 802.1ag Continuity Check Msgs. (CCMs) IEEE 802.1ag Continuity Check Msgs. (CCMs) ITU-T Y.1731 ITU-T Y.1731 MIPs MIPs MEPs MEPs ENNI ID ENNI ID S-VID to OVC Endpoint Map S-VID to OVC Endpoint MapLink IEEE 802.3ah Fault Management IEEE 802.3ah Fault ManagementService IEEE 802.1ag Continuity Check Msgs. (CCMs) IEEE 802.1ag Continuity Check Msgs. (CCMs) ITU-T Y.1731 ITU-T Y.1731 MIPs MIPs MEPs MEPs ENNI ID ENNI ID S-VID to OVC Endpoint Map S-VID to OVC Endpoint Map OAMReliability Link IEEE 802.3ad Link Aggregation (ENNI protection) Service ITU-T G.8031 OVC Protection (MEP location) Link IEEE 802.3ad Link Aggregation (ENNI protection) Service ITU-T G.8031 OVC Protection (MEP location) San José, CA USA February 25, Constructs for Carrier Ethernet Networks and Services QoS CoS ID S-VLAN PCP C-VLAN PCP DSCP I/E BW Profile Per ENNI CoS ID S-VLAN PCP C-VLAN PCP DSCP I/E BW Profile Per ENNI

EVC Attributes Summary EVC Type P-to-P P-to-P MP-to-MP MP-to-MP Rooted MP Rooted MPService CoS ID/C-VID Preservation CoS ID/C-VID Preservation L2CP Handling L2CP Handling MTU Size MTU Size U/M/B Frame Delivery U/M/B Frame Delivery EVC Type P-to-P P-to-P MP-to-MP MP-to-MP Rooted MP Rooted MPService CoS ID/C-VID Preservation CoS ID/C-VID Preservation L2CP Handling L2CP Handling MTU Size MTU Size U/M/B Frame Delivery U/M/B Frame Delivery Basic Service IEEE 802.1ag Continuity Check Msgs. (CCMs) IEEE 802.1ag Continuity Check Msgs. (CCMs) EVC ID EVC ID UNI List UNI List C-VID to EVC Map C-VID to EVC MapService IEEE 802.1ag Continuity Check Msgs. (CCMs) IEEE 802.1ag Continuity Check Msgs. (CCMs) EVC ID EVC ID UNI List UNI List C-VID to EVC Map C-VID to EVC Map OAMReliability Service ITU-T G.8031 EVC Protection (between MEPs) IEEE 802.1ag Continuity Check Msgs. (CCMs) Service ITU-T G.8031 EVC Protection (between MEPs) IEEE 802.1ag Continuity Check Msgs. (CCMs) San José, CA USA February 25, Constructs for Carrier Ethernet Networks and Services QoS CoS ID EVC PCP DSCP I/E BW Profile Per EVC Per EVC per CoS Performance FD IFDV FLR Availability CoS ID EVC PCP DSCP I/E BW Profile Per EVC Per EVC per CoS Performance FD IFDV FLR Availability

OVC Attributes Summary OVC Type P-to-P P-to-P MP-to-MP MP-to-MPService C-CoS ID/C-VID Preservation C-CoS ID/C-VID Preservation S-CoS ID/S-VID Preservation S-CoS ID/S-VID Preservation L2CP Handling L2CP Handling MTU Size MTU Size U/M/B Service Frame Delivery U/M/B Service Frame Delivery OVC Type P-to-P P-to-P MP-to-MP MP-to-MPService C-CoS ID/C-VID Preservation C-CoS ID/C-VID Preservation S-CoS ID/S-VID Preservation S-CoS ID/S-VID Preservation L2CP Handling L2CP Handling MTU Size MTU Size U/M/B Service Frame Delivery U/M/B Service Frame Delivery Basic Service IEEE 802.1ag Continuity Check Msgs. (CCMs) IEEE 802.1ag Continuity Check Msgs. (CCMs) OVC ID OVC ID OVC Endpoint List (UNI & ENNI) OVC Endpoint List (UNI & ENNI)Service IEEE 802.1ag Continuity Check Msgs. (CCMs) IEEE 802.1ag Continuity Check Msgs. (CCMs) OVC ID OVC ID OVC Endpoint List (UNI & ENNI) OVC Endpoint List (UNI & ENNI) OAMReliability Service ITU-T G.8031 OVC Protection (between MEPs) IEEE 802.1ag Continuity Check Msgs. (CCMs) Service ITU-T G.8031 OVC Protection (between MEPs) IEEE 802.1ag Continuity Check Msgs. (CCMs) San José, CA USA February 25, Constructs for Carrier Ethernet Networks and Services QoS CoS ID EVC PCP DSCP I/E BW Profile Per UNI End Point Per UNI EP CoS Per ENNI EP Per ENNI EP CoS CoS ID EVC PCP DSCP I/E BW Profile Per UNI End Point Per UNI EP CoS Per ENNI EP Per ENNI EP CoS

UNI EVC 1 EVC 2 EVC 3 BWP Per UNI Port-based UNI EVC 1 EVC 2 EVC 3 BWP Per EVC 1 BWP Per EVC 2 BWP Per EVC 3 VLAN-based UNI EVC 1 CE-VLAN CoS 6 BWP Per CoS ID 6 CE-VLAN CoS 4 CE-VLAN CoS 2 BWP Per CoS ID 4 BWP Per CoS ID 2 EVC 2 VLAN + CoS-based San José, CA USA February 25, Constructs for Carrier Ethernet Networks and Services Three Types of Bandwidth Profiles (BWP) for EVCs at UNI Ingress and Egress (I/E) Bandwidth Profiles Variants Bandwidth Profiles define how rate enforcement is applied

UNI or ENNI OVC 1 OVC 2 OVC 3 BWP Per OVC EP 1 BWP Per OVC EP 2 BWP Per OVC EP 3 VLAN-based San José, CA USA February 25, Constructs for Carrier Ethernet Networks and Services Two Types of Bandwidth Profiles (BWP) for OVCs at ENNI & UNI Ingress and Egress (I/E) Bandwidth Profiles Variants OVC 1 CE-VLAN CoS 6 BWP Per CoS ID 6 CE-VLAN CoS 4 CE-VLAN CoS 2 BWP Per CoS ID 4 BWP Per CoS ID 2 OVC 2 VLAN + CoS-based UNI or ENNI

Bandwidth Profile (BWP) per EVC Bandwidth Profile (BWP) per EVC  CIR (Committed Information Rate)   Frame delivery obligation per Service Level Objective (SLO)   CIR assured via Bandwidth Reservation and Traffic Engineering  CBS (Committed Burst Size)   Size of burst window for CIR  EIR (Excess Information Rate)   Frames dropped at congestion points   Excess frame delivery allowed   But not subject to SLO  EBS (Excess Burst Size)   Size of burst window for EIR  CM (Color Mode)   Determines if BWP is Color-blind or Color aware San José, CA USA February 25, Constructs for Carrier Ethernet Networks and Services Total UNI Bandwidth CIR EIR CIR EIR CIR EIR EVC 1 EVC 2 EVC 3 CIR defines the assured bandwidth EIR improves the user’s Goodput

Rate Enforcement: MEF trTCM Policer Token Bucket Model Example >CBS >EBS C E Token update rate: CIR/8 tokens/second Token update rate: EIR/8 tokens/second Service Frames arrive at UNI Service Frames admitted to Network ≤ CBS ≤ EBS Color-Blind UNI Color-Aware UNI 1 Token = 1 Byte San José, CA USA February 25, Constructs for Carrier Ethernet Networks and Services Color Marking Green Green CIR conforming traffic CIR conforming traffic Frames Forwarded Frames Forwarded Yellow Yellow Non-conformant with CIR Non-conformant with CIR Conformant with EIR Conformant with EIR Discard Eligible frames Discard Eligible frames Red Red Non-conformant with CIR Non-conformant with CIR Non-conformant with EIR Non-conformant with EIR Frames Discarded Frames Discarded CBS and EBS play an important role in the user’s Quality of Experience

EVC / OVC Multiplexing and C-VID Bundling   Service (EVC) multiplexing   More than one EVC at a UNI   Hub-and-spoke configurations   Multiple EVCs between two locations   OVC Multiplexing at an ENNI   More than one OVC at ENNI   Aggregated service configuration   C-VID Bundling   Associates multiple C-VIDs to an EVC   Special Case: All-to-one Bundling   All frames mapped to one EVC San José, CA USA February 25, Constructs for Carrier Ethernet Networks and Services ENNI OVC Wholesale Access Provider Subscriber A UNI Subscriber B UNI Retail Service Provider (e.g., ISP) EVC 2 EVC 1 C-VLAN to Map EVC 1 EVC 2 C-VID1-5, 20, , 50

EVC/OVC Multiplexing Considerations   EVC Multiplexing at a UNI   Supported for VLAN-based services (EVPL, EVP-LAN, EVP-Tree)   Only for EVCs from same subscriber   Not for EVCs from different subscribers   Not supported for Port-based services (EPL, EP-LAN, EP-Tree)   OVC Multiplexing at an ENNI   Supported for OVCs from different subscribers San José, CA USA February 25, Subscriber A EVCs Subscriber B EVCs UNI UNI Subscriber A OVCs Subscriber B OVCs ENNI  UNI  Constructs for Carrier Ethernet Networks and Services

Ethernet OAM Link and Service Fault Management

Ethernet OAM Jurisdictions ENNI-N UNI-C UNI-C IEEE 802.1ag End-to-End Connectivity Fault Management ITU-T Y.1731 End-to-End Performance Monitoring ENNI-N Network Operator 1 Network Operator 2 UNI-N UNI-N Link OAM Service OAM IEEE 802.3ah Link OAM Link OAM Link OAM San José, CA USA February 25, Constructs for Carrier Ethernet Networks and Services

Subscriber Service Provider Subscriber ENNI-N UNI ENNI-N Network Operator Service Provider MEG SP (Operator) MEG Operator MEG Subscriber MEG Service OAM Framework   Maintenance Entity Group (MEG) Administrative Domains to partition OAM   MEG End Points (MEPs) End Points that define boundaries of a MEG   MEG Intermediate Points (MIP) Intermediate Points within a MEG San José, CA USA February 25, Constructs for Carrier Ethernet Networks and Services

Subscriber Service Provider Subscriber ENNI-N UNI ENNI-N Network Operator Service Provider MEG SP (Operator) MEG Operator MEG Subscriber MEG Service OAM Continuity Check and Link Trace   Continuity Check Messages (CCMs) Provide continuous monitoring of an EVC or OVC between MEPs   Link Trace Message (LTM) and Link Trace Response (LTR) Traverses an EVC or OVC from MEP to MEP one MIP at a time San José, CA USA February 25, Constructs for Carrier Ethernet Networks and Services CCM CCMLTM LTR

Service Definitions

  Ethernet Service Type Categorizes the service based on its EVC type –Point-to-Point –Multipoint-to-Multipoint –Rooted Multipoint   Ethernet Service Attributes and Parameters Specifies the UNI & EVC requirements for each Ethernet Service Type MEF Ethernet Service Definition Framework San José, CA USA February 25, Constructs for Carrier Ethernet Networks and Services The MEF defines Ethernet Services using this Framework Ethernet Service Type Ethernet Service Attribute Parameter

Ethernet Service Classification and Definitions for EVC-based Services  MEF Services are classified into two categories : Port-based Port-based –Single Service Instance (EVC) per UNI (dedicated network resource) VLAN-based VLAN-based –Multiple Service Instances (EVCs) per UNI (shared network resource) 25 Constructs for Carrier Ethernet Networks and Services San José, CA USA February 25, 2010 Ethernet Service Types are “Umbrella” categories

Summary  Carrier Ethernet Augments Ethernet “LAN” technology for large scale deployments Is both an infrastructure and service delivery technology  Constructs to build an Ethernet Service UNI and ENNI for Service Demarcation EVC and OVC for Virtual Connectivity  Link and Service OAM Critical to deliver mass market Ethernet Service  Ethernet Service Types Categories of services based on their connectivity  MEF Ethernet Services categorization Port-based or VLAN-based Services San José, CA USA February 25, Constructs for Carrier Ethernet Networks and Services