The 5 Attributes of Carrier Ethernet

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The 5 Attributes of Carrier Ethernet Industry
Specifications

• Moderator Arie Goldberg Omnitron Systems
• Panelists
• Dr. Kumar N. Sivarajan - Tejas Networks
• Ralph Santitoro - Turin Networks
• Craig Easley - Actelis

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Panel Members
Dr. Kumar N. Sivarajan Chief Technology
Officer Tejas Networks kumar_at_tejasnetworks.com
Arie Goldberg Chief Technologist CEO Omnitron
Systems agoldberg_at_omnitron-systems.com
Ralph Santitoro Chair, MEF Web Marketing
Committee Director of Carrier Ethernet
Solutions Turin Networks RSantitoro_at_TurinNetworks.
com
Craig Easley Vice President of Marketing Actelis
Networks ceasley_at_actelis.com
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Presentation Agenda

• The 5 Attributes of Carrier Ethernet (CE)
  Arie Goldberg (Omnitron)
• Carrier Ethernet vs. Enterprise Ethernet,
  Concepts, Services Dr. Kumar Sivarajan (Tejas)
• Inter-Related Industry Specifications Ralph
  Santitoro (Turin)
• MEF Specifications Update Craig Easley
  (Actelis)
• QA

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The 5 Attributes of Carrier Ethernet Industry
Specifications

• The Five Attributes
• Arie Goldberg

5
Basic Carrier Ethernet Services
Point to Point
Point-to-Point EVC
E-LINE
CE
CE
UNI
UNI
E-LAN
Multi-Point to Multi-Point
Coming Soon!
Point to Multi-Point
E-TREE
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The 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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The 5 Attributes of Carrier Ethernet (1)
Attribute 1 Standardized Services

• Ubiquitous services provided locally globally
  via providers.
• E-Line, E-LAN, E-Tree provide transparent,
  private line, virtual private line and
  multi-point to multi-point LAN services.
• Using standardized equipment.
• Accommodates existing customer LAN equipment.
• Accommodates existing transport infrastructure
  technology including TDM.
• Enables converged voice, video data networks.

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The 5 Attributes of Carrier Ethernet (2)
Attribute 2 Scalability

• Enables different levels and variety of business,
  information, communications and entertainment
  applications with voice, video and data.
• Spans Access Metro to National Global
  Services.
• Utilizes a variety of physical infrastructures
  implemented by different Service Provider types.
• Support a wide choice and granularity of
  bandwidth and quality of service options.

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The 5 Attributes of Carrier Ethernet (3)
Attribute 3 Reliability

• The ability for the network to detect recover
  from incidents without impacting customers.
• Meeting the most demanding quality and
  availability requirements.
• Rapid recovery time when problems do occur as
  low as 50ms.

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The 5 Attributes of Carrier Ethernet (4)
Attribute 4 Quality of Service

• Wide choice and granularity of bandwidth and
  quality of service options.
• Service Level Agreements (SLAs) that deliver
  end-to-end performance matching the requirements
  for voice, video and data over converged business
  and residential networks.
• Provisioning via SLAs that provide end-to-end
  performance based on committed information rate
  (CIR), frame loss, delay and delay variation
  characteristics.

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The 5 Attributes of Carrier Ethernet (5)
Attribute 5 Service Management

• The ability to monitor, diagnose and centrally
  manage the network, using standards-based vendor
  independent implementations.
• Carrier-Class OAM.
• Rapid service provisioning.

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The 5 Attributes of Carrier Ethernet Industry
Specifications
Carrier Ethernet vs. Enterprise Ethernet
Concepts, Services Dr. Kumar N. Sivarajan
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What is Carrier Ethernet?

• More than Ethernet LAN
• Based on a Set of Simple Concepts
• Delivering Valuable Services
• Evolving to Meet Needs of Stakeholders

A Technology Whose Time is Now
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Why Ethernet in the Metro?

• Why take Ethernet to the Metro?
• Enables true extension of Enterprise LAN across
  multiple locations, as well as effectively
  providing other multipoint services
• Utilize simplicity and ubiquity of Ethernet as a
  technology
• Enables bandwidth efficiency in the network due
  to statistical multiplexing
• Low price/bandwidth ratio makes Ethernet the
  technology of choice

Ethernet
Ethernet
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Attribute 1 Standardized Services
Carrier Ethernet
Enterprise Ethernet
Network 2
Network 1
Network 3

• Provide service across multiple geographies and
  multiple networks
• Provides service to multiple customers
• Needs to provide converged transport with optimal
  use of present investment

• Service provided over one network (Company LAN)
• One customer can customize network to
  requirements

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Attribute 2 Scalability
Carrier Ethernet
Enterprise Ethernet
1 Gbps
100 Mbps
1000 Nodes
100 Nodes

• Few hundreds or thousands of nodes
• Need to scale from 10 Mbps to 1 Gbps
• Limited number of services to be supported

• Need to scale to millions of nodes
• Need to scale from few Mbps data rate to 10 Gbps
  and beyond
• Network needs to support several services

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Attribute 3 Reliability
Carrier Ethernet
Enterprise Ethernet






SLA losses

• Need to provide protection in case of link
  failure in less than 50 ms
• Need to provide five 9s reliability of equipment
• Need to recover from faults as quickly as
  possible to provide uptime as specified in SLA

• Equipment is all within a premise, more reliable
  with easy recovery
• No strict time limits needed on link protection,
  no SLAs associated with network availability

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Attribute 4 Service Management
Carrier Ethernet
Enterprise Ethernet
Service Down
Service Down
Vendor 1
Vendor 3
Vendor 2

• Fault isolation is easy since equipment is all
  within a premise
• Bandwidth is more static in nature, no need for
  provisioning

• Need to quickly monitor and diagnose faults
  across multiple vendor equipment
• Ability to rapidly provision the bandwidth
  end-to-end

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Attribute 5 Quality of Service
Carrier Ethernet
Enterprise Ethernet
High-speed Mobile Internet
Mobile Voice
Enterprise Services

• Bandwidth is cheap, hence no contention in the
  network
• No variety in traffic profiles, identical
  treatment is acceptable

Metro Network

• QoS absolutely required to service variety of
  SLAs
• Ability to treat customer traffic in agreement
  with the SLAs

Leakage of SLA-based traffic due to congestion
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In summary
Ethernet in LAN
Carrier Ethernet
Metro National International
Geographic Reach
Campus Building
Equipment
Wiring closet
Service-oriented Highly resilient Carrier
environmental
Fiber T1/E1, T3/E3 Cat5 SONET/SDH VG Cu Wireless
Transport Technologies
Cat5 Fiber Wireless
Availability
No tolerance for disruption Driven by SLA
Some tolerance for disruption
End Customer
Department heads Employee
Corporate ITConsumer
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The 5 Attributes of Carrier Ethernet Industry
Specifications

• Inter-Related Industry Specifications
• Ralph Santitoro

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Carrier Ethernet - Encompasses Many Standards

• A Service Delivery (Layer 2) technology supported
  over various Layer 0/1 transport network
  technologies
• Ethernet over Fiber (Ethernet)
• Provider Bridges (IEEE 802.1ad)
• Provider Backbone Bridges (IEEE 802.1ah)
• Provider Backbone Bridges-TE (PBT) via IEEE
  802.1Qay
• Ethernet over SONET/SDH using GFP encapsulation
  (ITU-T G.7040), VCAT (G.7041) for bonding and
  LCAS (G.7042) for Bandwidth Management
• Ethernet over PDH (T1/T3, E1/E3) using one of the
  following approaches
• PPP/MLPPP/BCP (RFC1990 / RFC3518) for
  encapsulation, bonding and Bandwidth management
• GFP for encapsulation, LCAS for BW mgmt., VCAT
  for bonding (G.8040)
• Ethernet over ? (ITU-T G.709)
• Ethernet over Copper (IEEE 802.3ah 2BaseTL, ITU-T
  G.991.2 G.SHDSL)
• A Transport Network (Layer 1) technology to
  deliver all services over a common Ethernet
  network infrastructure
• IEEE 802.3 Ethernet

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Ethernet Service Management- for SLAs

• Key Metrics
• Frame/Packet Delay
• Frame/Packet Delay Variation
• Frame/Packet Loss Ratio
• Service Availability
• Frame/Packet Goodput
• The Metro Ethernet Forum has defined metrics 1-4
• Frame-based measurements
• MEF 10.1 defines the formulae for Frame Delay,
  Frame Delay Variation, Frame Loss Ratio and
  Service Availability
• The ITU-T has defined metrics for items 1-3
• Packet-based measurements
• ITU-T Y.1731 defines how to use IEEE 802.1ag to
  measure service PMs

The combination of 802.1ag, Y.1731 and MEF 10.1
define the complete Ethernet Service PM solution
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Ethernet Service Performance Metrics- Some
statistically measured, some calculated

• Frame Delay (FD) and Frame Delay Variation (FDV)
• Statistically measured via transmission and
  reception of service OAM frames over measurement
  period
• Frame Loss Ratio (FLR)
• Calculated based on number of Green (in-profile)
  Ingress frames sent and Egress frames received
  over measurement period T
• Goodput
• Calculated based on total number of Ingress
  frames sent and Egress frames received over
  measurement period T
• Service Availability
• Calculated based on amount of time, FD, FDV and
  FLR meet or exceed their service level objectives
  over measurement period T, e.g., 15 minutes or 24
  hours

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Carrier Ethernet Network Reliability- Some
Ethernet Service Protection/Restoration Choices

• Path-based ITU-T G.8031 (linear) and G.8032
  (ring) Ethernet protection switching for E-Line
  Services
• IEEE 802.1ag messages heartbeats
• Alarm Indication Signal (AIS) Messages for
  localized fault isolation
• Protection/restoration options for E-LAN services
  to augment or replace RSTP
• Many proprietary implementations
• Multiple Instances of RSTP (MSTP) (IEEE)
• G-MPLS Path Protection (IETF)
• MPLS Fast Reroute for VPLS (IETF)

Many choices and no single protection/restoration
method is optimal for all services and topologies
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Ethernet Service Management (OAM)

• Service Connectivity Fault Management (CFM)
• IEEE 802.1ag for EVC Connectivity Fault
  Management
• Connectivity Check Messages (CCMs) for heartbeats
• For diagnostic purposes usage
• Connectivity Check Messages , Link Trace
  Messages, Loopback Messages
• Apply CCMs between Management Endpoints (MEPs /
  UNIs) and Management Intermediate Points (MIPs /
  NNIs)
• Link Fault Management (LFM)
• SONET/SDH LFM for Ethernet over SONET/SDH NNIs
• Facilities and Terminal (UNI) loopbacks
• IEEE 802.3ah for LFM for Ethernet UNI / NNI
  connections
• Fault Detection (Link Fault, Critical Events) and
  Remote Loopback

Fault Management uses different techniques
depending the type of transport network used
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Ethernet Service Scalability

• ITU-T Generic Framing Procedure (GFP) for
  Ethernet over SONET/SDH (EoS)
• 4095 EVCs / S-VLANs (Services) per EoS NNI (GFP)
  tunnel
• IETF MPLS Service ID
• 1M service instances
• IEEE 802.1ah Backbone Provider Bridges
• 16M service instances
• Triple Tag Stacking (QinQinQ) (proprietary)
• 4095 EVCs / S-VLANs (Services) per Outer Q tag
  tunnel

Different choices depending upon the type of
transport network used
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Carrier Ethernet Summary

• Ethernet technologies and standards are evolving
• to meet the requirements for the Carrier Ethernet
  Attributes
• Collaboration among the various Standards
  Development Organizations is crucial to success

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The 5 Attributes of Carrier Ethernet Industry
Specifications

• MEF Specifications Update
• Craig Easley

30
Technical Document Types

• Technical Specification
• Document detailing the agreed upon definitions,
  scope, methods and procedures for a component of
  Carrier Ethernet
• Implementation Agreement
• A document describing an agreement as to how
  options in existing technical specifications or
  other standards bodies work shall be implemented
• Test Specification
• A document describing how attributes of Carrier
  Ethernet technical specifications will be tested
  for compliance against those specifications
• Also called Abstract Test Suite
• Position Statement
• An Outgoing Liaison with other standards
  organizations describing the MEF

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Completed Specifications
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Completed Specifications
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Document Relationships
MEF 10ServiceAttributes
MEF 1ConnectivityAttributes
MEF 10.1ServiceAttributes
Phase 2ServiceDefinitions
MEF 5Policing Performance
MEF 14Policing PerformanceTests
MEF 14CertificationPrograms
MEF 6ServiceDefinitions
MEF 19CertificationPrograms
MEF 9CertificationPrograms
UNI Type I Certification
MEF 9ConnectivityTests
ReferenceIncorporation
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Document Relationships
MEF 18Abstract Test Suite for CES
MEF 8Circuit Emulation TS
MEF 3Circuit Emulation Framework
Circuit Emulation Services Certification
ReferenceIncorporation
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Ethernet Standards Summary
Ethernet OAM
Architecture/Control
Ethernet Services
Ethernet Interfaces
Standards Body

• 802.3ah EFM OAM
• 802.1ag CFM
• 802.1AB - Discovery
• 802.1ap VLAN MIB

• 802.3 MAC
• 802.3ar Congestion Management
• 802.1D/Q Bridges/VLAN
• 802.17 - RPR
• 802.1ad Provider Bridges
• .1ah Provider Backbone Bridges
• .1ak Multiple Registration Protocol
• .1aj Two Port MAC Relay
• .1AE/af MAC / Key Security
• .1aq Shortest Path Bridging

-

• 802.3 PHYs
• 802.3as - Frame Expansion

IEEE

• MEF 7 EMS-NMS Info Model
• MEF 15 NE Management Req
• OAM Req Framework
• OAM Protocol Phase 1
• Performance Monitoring

• MEF 4 Generic Architecture
• MEF 2 Protection Req Framework
• MEF 11 UNI Req Framework
• MEF 12 - Layer Architecture

• MEF 10 Service Attributes
• MEF 3 Circuit Emulation
• MEF 6 Service Definition
• MEF 8 PDH Emulation
• MEF 9 Test Suites
• MEF 14 Test Suites
• Services Phase 2

• MEF 13 - UNI Type 1
• MEF 16 ELMI
• E-NNI

MEF

• Y.1730 Ethernet OAM Req
• Y.1731 OAM Mechanisms
• G.8031 Protection
• Y.17ethqos QoS
• Y.ethperf - Performance

• G.8010 Layer Architecture
• G.8021 Equipment model
• G.8010v2 Layer Architecture
• G.8021v2 Equipment model
• Y.17ethmpls - ETH-MPLS Interwork

• G.8011 Services Framewrk
• G.8011.1 EPL Service
• G.8011.2 EVPL Service
• G.asm Service Mgmt Arch
• G.smc Service Mgmt Chnl

• G.8012 UNI/NNI
• G.8012v2 UNI/NNI

ITU

• TMF814 EMS to NMS Model

-
-
-
TMF
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Summary
Carrier Ethernet is about solving real life
problems providing Real Services of Data,
Video, Voice, P2P, P2MP.

• Services must be
• Standardized local global
• Scalable fit changing needs
• Reliable - dependable
• Manageable efficient and effective
• Provide Predictable / measurable QoS

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Five Attributes - QA
Arie Goldberg Chief Technologist CEO Omnitron
Systems agoldberg_at_omnitron-systems.com
Dr. Kumar N. Sivarajan Chief Technology
Officer Tejas Networks kumar_at_tejasnetworks.com
Ralph Santitoro Chair, MEF Web Marketing
Committee Director of Carrier Ethernet
Solutions Turin Networks RSantitoro_at_TurinNetworks.
com
Craig Easley Vice President of Marketing Actelis
Networks ceasley_at_actelis.com
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• Thank you
• More at www.metroethernetforum.org