Download The 5 MEF Attributes of Carrier Ethernet & Inter

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
Arie Goldberg
Dr. Kumar N. Sivarajan
Chief Technologist & CEO
Omnitron Systems
[email protected]
Chief Technology Officer
Ralph Santitoro
Craig Easley
Chair, MEF Web Marketing Committee
Director of Carrier Ethernet Solutions
Turin Networks
[email protected]
Vice President of Marketing
Actelis Networks
[email protected]
Tejas Networks
[email protected]
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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)
• Q&A
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The 5 Attributes of Carrier Ethernet
& Industry Specifications
The Five Attributes
Arie Goldberg
4
Basic Carrier Ethernet Services
Point to Point
Point-to-Point EVC
E-LINE
CE
E-LAN
CE
UNI
UNI
CE
UNI
E-TREE
Multipoint EVC
UNI
UNI
CE
Point to
Multi-Point
Rooted Multipoint EVC
CE
UNI
UNI
Coming Soon!
5
CE
Multi-Point to
Multi-Point
CE
The 5 Attributes of Carrier Ethernet
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
• Standardized Services
Carrier
Ethernet
Attributes
• 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
10/100
Base -T
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Attribute 1: Standardized Services
Carrier Ethernet
Enterprise Ethernet
Network 2
Network 1
Network 3
 Service provided over one
network (Company LAN)
 Provide service across multiple
geographies and multiple networks
 One customer – can
customize network to
requirements
 Provides service to multiple customers
 Needs to provide converged transport
with optimal use of present investment
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Attribute 2: Scalability
Carrier
Ethernet
Enterprise
Ethernet
100 Gbps
10 Gbps
1 Gbps
1 Gbps
100 Mbps
100 Mbps
10M
100
1000 10K
Nodes Nodes Nodes Nodes
100
1000
Nodes Nodes
 Few hundreds or
thousands of nodes
 Need to scale to millions of
nodes
 Need to scale from 10
Mbps to 1 Gbps
 Need to scale from few Mbps
data rate to 10 Gbps and beyond
 Limited number of
services to be supported
 Network needs to support
several services
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Attribute 3: Reliability
Enterprise
Ethernet
Carrier
Ethernet
$ $$ $ $
50ms protection
SLA losses
 Need to provide protection
in case of link failure in less
than 50 ms
 Equipment is all within a premise,
more reliable with easy recovery
 Need to provide five 9s
reliability of equipment
 No strict time limits needed on link
protection, no SLAs associated with
network availability
 Need to recover from faults as
quickly as possible to provide
uptime as specified in SLA
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Attribute 4: Service Management
Enterprise
Ethernet
Carrier
Ethernet
Service
Down
Service
Down
Vendor 1
Vendor 3
Vendor 2
 Fault isolation is easy
since equipment is all
within a premise
 Need to quickly monitor and
diagnose faults across multiple
vendor equipment
 Bandwidth is more static
in nature, no need for
provisioning
 Ability to rapidly provision the
bandwidth end-to-end
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Attribute 5: Quality of Service
Enterprise
Ethernet
 Bandwidth is cheap,
hence no contention
in the network
 No variety in traffic
profiles, identical
treatment is
acceptable
Carrier
Ethernet
High-speed Mobile Mobile Voice
High-speed
Mobile Voice Enterprise
Internet
Services
Enterprise
Mobile Internet
Services
Metro
Metro
Network
Network
ofQoS
absolutely required
Leakage
SLA-based
traffic due service
to congestion
variety of SLAs
to
 Ability to treat customer traffic
in agreement with the SLAs
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In summary
Ethernet in LAN
Geographic
Reach
Carrier Ethernet
Metro
National
International
Campus
Building
Wiring closet
Service-oriented
Highly resilient
Carrier environmental
Equipment
Fiber
Cat5
VG Cu
T1/E1, T3/E3
SONET/SDH
Wireless
Transport
Technologies
Cat5
Wireless
Availability
Some tolerance for disruption
No tolerance for disruption
Driven by SLA
End Customer
Department heads
Employee
Corporate IT
Consumer
Fiber
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The 5 Attributes of Carrier Ethernet
& Industry Specifications
Inter-Related Industry Specifications
Ralph Santitoro
21
Carrier Ethernet
- Encompasses Many Standards
1. 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 λ (ITU-T G.709)
– Ethernet over Copper (IEEE 802.3ah 2BaseTL, ITU-T G.991.2 G.SHDSL)
2. 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
1.
2.
3.
4.
5.
•
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
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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
Number
Topic
Comments
MEF 1
Service Model Phase 1
Connectivity attributes
MEF 2
Protection Requirements
Framework and terminology
MEF 3
Circuit Emulation Service Definitions,
Framework and Requirements
Similar to circuit emulation over IP but
over Ethernet instead
MEF 4
Metro Ethernet Network Architecture
Framework - Part 1: Generic
Framework
Terminology and abstract model
MEF 5
Traffic Management Phase 1
Policing and performance
MEF 6
Ethernet Services Definitions - Phase I
E-Line, E-LAN, EPL, EVPL
MEF 7
EMS-NMS Information Model
Being updated by ITU SG 4
MEF 8
Emulation of PDH Circuits
PDH circuit emulation
MEF 9
Abstract Test Suite for Ethernet
Services at the UNI
Basis for first certification program
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Completed Specifications
Number
Topic
Comments
MEF 10
Ethernet Services Attributes Phase 1
Replaces MEF 1 and MEF 5
MEF 10.1
Ethernet Services Attributes Phase 2
Replaces MEF 10
MEF 11
User Network Interface (UNI) Requirements and Type 1: Data Plane, Type 2: Mgt
Framework
Plane, Type 3: Ctl Plane
MEF 12
Metro Ethernet Network Architecture
Framework Part 2: Ethernet Services Layer
Terminology and abstract model
MEF 13
User Network Interface (UNI) Type 1
Implementation Agreement
Sizing requirements
MEF 14
Abstract Test Suite for Traffic Management
Phase 1
Basis for second certification
program
MEF 15
Requirements for Management of Metro
Ethernet Phase 1 Network Elements
MEF 16
Ethernet Local Management Interface
LMI for Ethernet (UNI Type II)
MEF 17
Service OAM Framework and Requirements
OAM Component of UNI Type II
MEF 18
Abstract Test Suite for Circuit Emulation
Basis for the third certification
MEF 19
Abstract Test Suite for UNI Type II
Basis for the fourth certification
program
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Document Relationships
MEF 10
Service
Attributes
MEF 1
Connectivity
Attributes
MEF 10.1
Service
Attributes
MEF 5
Policing &
Performance
MEF 14
Policing &
Performance
Tests
MEF 6
Service
Definitions
MEF 9
Connectivity
Tests
MEF 9
Certification
Programs
Phase 2
Service
Definitions
MEF 14
Certification
Programs
MEF 19
Certification
Programs
UNI Type I
Certification
Reference
Incorporation
33
Document Relationships
MEF 18
Abstract
Test Suite for
CES
MEF 8
Circuit
Emulation TS
MEF 3
Circuit
Emulation
Framework
Circuit Emulation Services
Certification
Reference
Incorporation
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Ethernet Standards Summary
Standards
Body
IEEE
MEF
ITU
TMF
Ethernet Services
-
Architecture/Control
•
•
•
•
•
•
•
•
•
•
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
Ethernet OAM
• 802.3ah – EFM OAM
• 802.1ag – CFM
• 802.1AB - Discovery
• 802.1ap – VLAN MIB
Ethernet
Interfaces
• 802.3 – PHYs
• 802.3as - Frame
Expansion
• 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 4 – Generic Architecture
• MEF 2 – Protection Req & Framework
• MEF 11 – UNI Req & Framework
• MEF 12 - Layer Architecture
• MEF 7– EMS-NMS Info Model • MEF 13 - UNI Type 1
• MEF 15– NE Management Req • MEF 16 – ELMI
• OAM Req & Framework
• E-NNI
• OAM Protocol – Phase 1
• Performance Monitoring
• 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.8010 – Layer Architecture
• G.8021 – Equipment model
• G.8010v2 – Layer Architecture
• G.8021v2 – Equipment model
• Y.17ethmpls - ETH-MPLS Interwork
• Y.1730 – Ethernet OAM Req
• Y.1731 – OAM Mechanisms
• G.8031 – Protection
• Y.17ethqos – QoS
• Y.ethperf - Performance
-
•TMF814 – EMS to NMS Model
-
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• G.8012 – UNI/NNI
• G.8012v2 – UNI/NNI
-
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
36
Five Attributes - Q&A
Arie Goldberg
Dr. Kumar N. Sivarajan
Chief Technologist & CEO
Omnitron Systems
[email protected]
Chief Technology Officer
Ralph Santitoro
Craig Easley
Chair, MEF Web Marketing Committee
Director of Carrier Ethernet Solutions
Turin Networks
[email protected]
Vice President of Marketing
Actelis Networks
[email protected]
Tejas Networks
[email protected]
37
Thank you
More at www.metroethernetforum.org
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