Carrier Ethernet: User to Network Interface UNI NetworktoNetwork Interfaces ENNI and EndtoEnd OAM

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Carrier Ethernet User to Network Interface
(UNI) Network-to-Network Interfaces (E-NNI)and
End-to-End OAM
Arie Goldberg,CEO, Omnitron System Technology,
Inc.Board Member, Metro Ethernet Forum
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Agenda

• Carrier Ethernet Services and Challenges
• Carrier Ethernet (CE) MEF defined Services
• CE Service Provider challenges
• Ethernet Services Network Basics
• Demarcation Points - Definition of UNI and E-NNI
• Anatomy of Ethernet Service
• Link and Service OAM
• OAM Hierarchies, Components and Protocols
• Link and Service OAMs
• Wholesale Logistics
• Global Services Directory
• Wholesale Access Template

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Carrier Ethernet Services and Challenges
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Carrier Ethernets Evolution

• Basic Ethernet Access Services definition
• From Metro to Regional Services
• From Regional to National Services
• From National to International / Global Services
• From Intra-Provider (In-franchise/IF) to
  Inter-Provider (out-of-franchise/OOF) Services

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Demand Drivers Services and Bandwidth
On-line Government
Healthcare date Tele-medicine
Education Remote learning



NEW tools! Apps!


Backhaul Apps



VoIP VoD IPTV E-Line E-LAN)
Low CAPEX Low OPEX
Low Cost to Subscribers
Commerce, On-line
Business, Tele-workers, On-line
Financial Services, On-line
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The MEF 5-Attributes of Carrier Ethernet

• Carrier Ethernet is a ubiquitous, standardized,
  carrier-class SERVICE defined by five
  attributes that distinguish Carrier Ethernet
  from familiar LAN based Ethernet
• It brings the compelling business benefit of the
  Ethernet cost model to achieve significant
  savings

Carrier Ethernet
Carrier Ethernet Attributes

• Standardized Services

• Scalability

• Service Management

• Reliability

• Quality of Service

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MEF defined Basic CE Services
E-LINE EPL Private Line EVPL Virtual Private
Line
Point to Point Site2Site L2 VPNs
Point-to-Point EVC
CPE
CPE
UNI
UNI
E-LAN EP-LAN Private LAN EVP-LAN Virtual
Private LAN
Multi-Point to Multi-Point Multi-Site L2
VPNs Transparent LANs
Multipoint EVC
CPE
CPE
UNI
UNI
Point to Multi-Point Broadcasting
Services Triple Play backhaul Mobile backhaul
E-TREE EP-Tree Private Tree EVP-Tree Virtual
Private Tree
CPE
UNI
Rooted Multipoint EVC
CPE
UNI
CPE
UNI
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Global Services crossing carrier boundaries
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Some of the Challenges of CE Service Providers

• Turn-up services quickly and efficiently be
  competitive, get revenues ASAP
• On/Off-Net services meet global customer needs
  - buy and sell / wholesale with other providers -
  generate revenue on and off-net
• Reliability/Up-time (99.999) - enable high value
  services with SLAs for higher rate revenues
• Quality build customer satisfaction increase
  customer retention keep revenues coming
• Efficient operation - keep OpEx costs down be
  competitive and profitable

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Carrier Ethernet Network Basics
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Carrier Ethernet Demarcation Points
Access Network Provider
E-NNI
Transport Network Provider
Ethernet Service Provider
Subscriber
Subscriber

• UNI - User-to-Network Interface
• Demarcation point between
• Ethernet Service Provider/Access Network Provider
  and Subscriber
• Ethernet Service / Ethernet Virtual Connection
  (EVC) starting / ending point
• E-NNI - External Network-to-Network Interface
• Demarcation point between
• Ethernet Service Provider and Access Network
  Provider
• Ethernet Access Provider and Transport Network
  Provider
• EVC - Ethernet Virtual Connection
• Ethernet service connecting between 2 or more UNIs

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Carrier Ethernet Service
RUNI
VUNI1
VUNI2 and VUNI3
Access Network Provider
Transport Network Provider
E-NNI
Ethernet Service Provider
Subscriber
Subscriber

• Access Network Provider
• Provides CEVC1 connection between Subscriber UNI1
  (RUNI) and VUNI1 at E-NNI1 with Transport Network
  Provider
• Transport Network Provider
• Provides CEVC2 connection between E-NNI1 (VUNI2)
  and E-NNI2 (VUNI3) with Ethernet Service Provider
  
• Ethernet Service Provider
• Provides connection to E-NNI2 with Transport
  Network Provider
• Provides End-to-End Ethernet Service to
  Subscriber
• Provides EVC between UNI1 and UNI2

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Network Interface Device (NID)

• A device that provides the point of demarcation
  between an operator ans a subscriber
• UNI-N functions are partitioned between the NID
  and the Network Edge device
• Provides the physical interface to the subscriber
  (fiber, copper)

• Owned by the Operator / Service Provider
• managed by Operator / Service Provider
• Provides fault and performance management for E2E
  services
• Complex device

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Global Services crossing carrier boundaries
Challenge How to install quickly, run reliably,
operate efficiently and deliver SLA

/ /
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Link and Service OAMs
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OAM Layer Components
E2E Performance Monitoring
E2E Fault Monitoring
P2P Link Fault Management

• Each layer supports OAM capabilities
  independently
• OAMs interoperate
• Component responsibilities are complementary

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Link Fault Management OAM
NID
NID
802.3ah
802.3ah
802.3ah
802.3ah
802.3ah
802.3ah
802.3ah
802.3ah
802.3ah

• Link OAM - IEEE 802.3ah Per link
  (point-to-point)
• Link monitoring -- Remote loopback
• Remote failure indication -- Loopback Control
• Good for single links, but does not monitor
  across EVC

Ethernet Link Fault Management performed by
Carrier Ethernet network elements and NIDs
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E2E Service OAM Maintenance Associations

• Maintenance Association (MA) Boundaries of an
  Administrators scope of monitoring part of the
  network
• Maintenance Domain (MD) A level of monitoring
  within the hierarchy
• Maintenance End Points (MEP) End Points of the
  MA or MD
• Maintenance Intermediate Points (MIP)
  Intermediate Points within MA or MD

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E2E Service OAM - Hierarchical Domains

• A flat network is difficult to manage and define
  accountabilities
• Hierarchical Maintenance Domains defines OAM
  Flows OAM responsibilities

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Ethernet Service Connectivity Fault Management

• IEEE 802.1ag for EVC Connectivity Fault
  Management
• For Protection/Restoration
• Connectivity Check Messages (CCMs) for heartbeats
• For diagnostic purposes
• Connectivity Check (Layer 2 Ping), Link Trace,
  Loopbacks
• CCMs initiated between
• Management Endpoints (MEPs / UNIs)
• Management Intermediate Points (MIPs / NNIs)
• Management Endpoints and Intermediate Points
  (UNI-NNI)

Connectivity Fault Management provided by Carrier
Ethernet network elements and NIDs
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Ethernet Service Continuity Check
UNI
IP/MPLS Core Network
UNI
Metro Aggregation Network
Metro Aggregation Network
Access Network
Access Network
MEP 2
MEP1
MIP
MIP
MIP
MIP
Maintenance Association (MA)
MIP
MIP
MEP 2 Report on CC fault if no CCMs are received
from MEP 1 for 30ms
MEP 2 CCMs sent every 10ms Check for CCMs
received from MEP 1
Ethernet continuity check is analogous to IPs
Ping but does much more
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Ethernet Link Trace
UNI
IP/MPLS Core Network
UNI
Metro Aggregation Network
Metro Aggregation Network
Access Network
Access Network
Link trace Reply
Ethernet Link Trace is analogous to IPs
Traceroute
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Service Performance Management

• Key Metrics
• Frame/Packet Delay Latency (e.g. UNI/UNI
  30ms_at_99.9_at_15min)
• Frame/Packet Delay Variation Jitter (e.g.
  10ms_at_99.9_at_15min)
• Frame/Packet Loss Ratio (e.g. CIR FL1_at_15min)
• Service Availability (e.g. 99.99_at_30days)
• ITU-T has defined measurement framework/metrics
  for items 1-3
• IP packet-based measurements
• ITU-T Y.1731 defines how to use 802.1ag to
  measure performance
• MEF has defined measurement framework for items
  1-4
• Ethernet Frame-based measurements
• MEF 10.1 defines formulae for metrics calculation

The combination of IEEE 802.1ag, ITU-T Y.1731 and
MEF 10.1 define Ethernet service performance
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Interfaces and Ethernet Virtual Circuits
E2E Service OAM Fault-802.1ag Perform-Y.1731
UNI
UNI
Point-to-Point EVC
Point-to-Point EVC
UNI
Carrier B
Link OAM 802.3ah
E-NNI
UNI
Carrier A
Multi-point to Multi-point EVC
UNI
UNI
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Summary

• New Protocol Solutions
• Point-to-Point Link OAM (802.3ah)
• End-to-End Service Connectivity Fault OAM
  (802.1ag)
• End-to-End Service Performance Monitoring OAM
  (Y.1731)
• Enable quick turn-up Acct acquisition/revenue
• Increase reliability/up-time Acct
  retention/revenue
• Enables SLA commitments Keep revenue
• Enable efficient service operation / maintenance
  (man/machine/time/energy) reduce OPEX

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Wholesale Logistics
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Global Services Directory Summary

• Business Users
• Find Carrier Ethernet services anywhere in the
  world.
• Service Providers
• Find a partner to build a global Carrier Ethernet
  service.
• Featuring
• Free access to interactive map driven system
• Latest info on available services globally,
  locally
• http//www.metroethernetforum.org/gsd

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Global Services Directory Summary

• Business Users
• Find Carrier Ethernet services anywhere in the
  world.
• Service Providers
• Find a partner to build a global Carrier Ethernet
  service.
• Featuring
• Free access to interactive map driven system
• Latest info on available services globally,
  locally
• http//www.metroethernetforum.org/gsd

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Global Services Directory Project Review

• MEF worked with Heavy Reading to develop
  up-to-date database of Ethernet Service Providers
  worldwide
• Identifies Carrier Ethernet services by city,
  country, and service application
• Four phase project to
• Cover MEF Service Providers with basic service
  and location information
• Add more service providers and allow real time
  updates via Service Provider back-end
• Provide in-depth service information,
• Non-MEF Service Providers (TBD)

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Service Provider Participants
Service Provider and Cable MSO Members

• Sprint
• Suddenlink
• Swisscom
• Symphony Communication
• TATA Communications
• Telecom Italia
• Telekom Malaysia
• Teliasonera AB
• Telus
• Time Warner Cable
• Time Warner Telecom
• T-Systems
• Uecomm
• Verizon Business
• XO Communications

• KDDI RD Laboratories
• KPN Telecom
• Level 3 Communications
• ntl Telewest
• NTT Advanced Technology
• Optimum Lightpath
• Orange Business Services
• PCCW
• PT Inovação
• PT Prime
• Qwest Communications
• RCN Business Solutions
• Reliance Communications
• Shanghai Information Network
• Singapore Telecom

• AboveNet
• Alpheus Communications
• ATT
• Bell Canada
• Bright House Networks
• British Telecom
• Cable Wireless
• Charter Communications
• China Telecom
• Cincinnati Bell
• Colt
• Comcast
• Cox Business
• Demand Broadband
• Embarq
• IPC

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Wholesale Access Interconnection Group
Charter Define Standard template and procedure
for ordering wholesale Ethernet services between
service providers Objectives To enable
efficient communication of network capabilities
between Service Providers and prospective
wholesale partners
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WAIG Template

• Physical Customer Interfaces
• For different services (UNI and NNI) provide
  physical interface options (fiber, copper, rates
  etc.)
• Path Diversity and Protection
• For topology and protocol options (xSTP etc.)
• Ethernet Frames
• Frame type and size options
• Service multiplexing (EVCs etc.) options
• Performance and Class of Service (CoS)
  Requirements
• CoS options
• Performance per CoS options
• Service Technology Questions
• Service / BW Profile options
• Frame tagging options
• Miscellaneous service (no other place) questions

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WAIG Template (cont.)

• Network Management
• Maintenance Points for Fault, Performance OAM
  options
• OAM Protocol options
• Administrative options
• Wholesale partner administrative and logistical
  options
• Performance and SLA Reporting Capability
• On and Off-line performance reporting options
• Security
• Threat detection and defense options
• Connection Admission Control (CAC) Rules
• CoS traffic handling
• EVC and NNI Speeds
• Throughput information

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WAIG Status

• Draft is being posted for MEF membership review
• Trial run Access Providers to fill-out the
  draft template expect comments
• Implement comments
• Initial publication Q4 (Oct. 08) MEF meeting
  (Malta)
• Early adaptors can start using Template now

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Carrier Ethernets Evolution
OOF WAN
WAN
MAN
LAN
Finish E-NNI Finish NID Refine GS Directory add
SPs Release WAIG Template
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Thank You
Presentations are available atwww.metroethernetfo
rum.org