testing ethernet services

8/4/2019 Testing Ethernet Services

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23th Oct 2006

presented at

Carrier EthernetTesting Ethernet Services:

Function and Quality


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Testing Ethernet Services

Carrier Ethernet: Definition, Benefits and Attributes

What is the MEF Carrier Ethernet CertificationProgram?

What does the Certification of Service ProviderCarrier Ethernet Services Mean?

Why is Service Quality the Next Big Step in Carrier

Ethernet Compliance Testing?

Where is the MEF Certification Program Going in2007-2008?


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MEF 9: A Test Specification for Services

MEF 9 is an innovative service-oriented test specification

Defines tests that can be applied to Ethernet Services definedby the MEF:

E-Line Services

E-LAN Services

MEF 9 opens the way for future service-oriented testspecifications based on MEF services specifications


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The MEF Certification Program:

Rapid Progress Achieved

ProgramLaunched with

Iometrix

April 2005

First 16 Vendorsand 39 Products

Certified toMEF 9 (UNI)Announced

Sept 2005

First 7 Carriersand 21 Services

Certified toMEF 9 (UNI)

Announced

April 2006

First 15 Vendorsand 40 Products

Certified to

MEF 14 (TM)Announced

June 2006

October 2006

Program Totals:28 Equipment Manufacturers, 11 Service Providers Certified

>150 Systems, 1000s Tests Conducted

Service Provider

CertificationMEF 14 (TrafficManagement)

Announced

October 2006


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MEF 9 TestsServices, Attributes and Parameters

MODEL LEVEL

MEN REQUIREMENTSSERVICE LEVEL

MEN REQUIREMENTSATTRIBUTE LEVEL

MEN REQUIREMENTSPARAMETER LEVEL

MEN REQUIREMENTS

MODEL LEVEL

TEST DEFINITIONSSERVICE LEVEL

TEST DEFINITIONSATTRIBUTE LEVEL

TEST DEFINTIONSPARAMETER LEVEL

TEST DEFINITIONS

ETHERNET SERVICES

MODELETHERNET SERVICES

DEFINITIONSETHERNET SERVICES

ATTRIBUTESETHERNET SERVICES PARAMETERS

MEF 9 test definitions are tightly based MEF Services specifications


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MEF 9 Tests Service Compliancefrom the Subscriber Point of View

MEF 9 tests conformance of Ethernet Services at the UNIwhere the Subscriber and Service Provider areas of responsibility meet

Testers generating

receiving monitoringframesat the UNI

Testers generatingreceiving monitoring

framesat the UNI

Testers physically attach to the MEN at the UNITesters may be attached to the MEN

at multiple UNIs

User NetworkInterface (UNI)

MetroEthernetNetwork

User NetworkInterface (UNI)

Test Bed for Ethernet Services at the UNI


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MEF 9 Services Certification Tests

MEF Phase1 Certification Tests are based on MEF 9:Abstract Test Suite for Ethernet Services at the UNI

Certification Tests are defined for the three EthernetServices defined in MEF 6:

EPL Services

EVPL Services

E-LAN Services


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Testing Ethernet Services Attributes

MEF 9 defines a series of tests to verify that Servicesdelivered to the Subscriber across the UNI areconformant to MEF technical specifications

Specifically MEF 9 tests two sets of the MEF defined

Attributes of Ethernet Services: the EVC Attributes

the UNI Attributes

UNIMEN

UNI

Point-to-Point EVC

- An Ethernet Virtual Connection (EVC) isan association of 2 or more UNIs

- MEF has defined 2 EVC types

- Point-to-Point (E-LINE)

- Multipoint-to-Multipoint (E-LAN)

MEF S i C ifi i T A E l


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MEF 9 Services Certification TestsAn Example:CE-VLAN ID Preservation Attribute 1/2

CE-VLAN ID/EVC

MAP INGRESSSERVICE FRAMEFORMAT

EGRESS SERVICEFRAME FORMAT CE-VLAN ID PRESERVATIONSERVICE ATTRIBUTE

UNI A UNI BAZ

AZBidirectional

UntaggedPriority Tagged

Tagged XUntagged

Priority TaggedTagged X YES for all Service Frames

Scenario AZ: All Service Frames including Untagged and Priority Tagged are mapped to the EVC

CE-VLAN ID Preservation Service Attribute with Bundling

CE-VLAN ID/EVCMAP INGRESS

SERVICE FRAMEFORMAT

EGRESS SERVICEFRAME FORMAT CE-VLAN ID PRESERVATIONSERVICE ATTRIBUTE

UNI A UNI B

X*,Y X*,YBidirectional


Tagged XTagged Y

N/SN/s

Tagged XTagged Y

YES for a SUBSET of Service Frames Tagged Xand Tagged Y

Scenario X*, Y: Untagged, Priority Tagged and Service Frames with VLAN ID X and VLAN ID Y are mapped to the EVC

CE-VLAN ID Preservation Service Attribute without Bundling or All-to-One Bundling


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CE-VLAN ID Preservation Attribute 2/2

CE-VLAN ID Preservation Service Attribute without Bundling or All-to-One Bundling

CE-VLAN ID/EVC MAPINGRESS SERVICE

FRAME FORMAT EGRESS SERVICE FRAMEFORMAT CE-VLAN ID PRESERVATIONSERVICE ATTRIBUTEUNI A

UNI B

X X

Bidirectional

Tagged X Tagged X YES for all Service Frames

X* X*Bidirectional


Tagged XN/SN/S

Tagged X YES for a SUBSET of Service Frames Tagged X

X X*Unidirectional

Tagged X Tagged X YES for all Service Frames

X* XUnidirectional


Tagged XTagged XTagged XTagged X YES for a SUBSET of Service Frames Tagged X

X* X*Bidirectional


Tagged XUntaggedUntaggedUntagged NO for all Service F rames

X X*Unidirectional

Tagged X Untagged NO for all Service F rames

X YUnidirectional

Tagged X Tagged Y NO for all Service F rames

X* Y*Unidirectional


Tagged XUntaggedUntaggedUntagged NO for all Service F rames

X Y*Unidirectional

Tagged X Untagged NO for all Service F rames

X* YUnidirectional


Tagged XTagged YTagged YTagged Y NO for all Service F rames

Scenario X*: Untagged, Priority Tagged and Service Frames with VLAN ID X are mapped to the EVCScenario Y*: Untagged, Priority Tagged and Service Frames with VLAN ID Y are mapped to the EVCScenario X: Only Service Frames with VLAN ID X are mapped to the EVCScenario Y: Only Service Frames with VLAN ID Y are mapped to the EVC


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MEF 9 Certification Test Cases

Certification of compliance to MEF 9 is based on the IometrixMEF 9 Test Plan which has a total of 244 Test Cases:

For EPL Services:

48 Test Cases of which 33 are mandatory

For EVPL Services:


For E-LAN Services:



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MEF Certification Update

MEF 9 C tifi ti f S i P id


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MEF 9 Certification for Service ProviderCarrier Ethernet Services

Guarantee that subscribers can confidently orderEthernet EPL, EVPL and E-LAN services thatconform to MEF service specifications

Essential for large enterprises receiving Ethernetservices from multiple providers

Make Ethernet services more attractive toenterprise subscribers with strict requirements forservice quality


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Service Provider Certification Process

Carrier Ethernet Services Certification testingcarried out by Iometrix in two step process:

Lab test phase Service Provider required to build out service

infrastructure in a lab environment for initial verification

of service compliance to MEF 9 specifications

Field test phase MEF 9 compliance for each Service is tested end-to-end

on Service Provider production circuits built acrossService Provider core network

Fi t G f S i P id


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First Group of Services ProvidersAwarded MEF 11 Compliance Certification

Service Quality The Next Step


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Service Quality: The Next Stepin Carrier Ethernet Compliance Testing

Traffic Management Testing based on MEF 10:

Section 6.7 which defines EVC RelatedPerformanceService Attributes:

Frame Delay Service Performance Frame Delay Variation Service Performance

Frame Loss Ratio Service Performance

Section 7.10 which defines Bandwidth ProfilesService Attributes:

Bandwidth Profile Rate Enforcement

Bandwidth Profile per Ingress UNI Bandwidth Profile per EVC Bandwidth Profile per Class of Service Multiple Bandwidth Profiles at the UNI

MEF 14 Introduces Standards Based


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MEF 14 Introduces Standards BasedSLS/SLA Verification of Carrier Ethernet Service Quality

SLS (Service Level Specification) refers to the parameters of theperformance objectives

SLA (Service Level Agreement) refers to the contractualobligations binding the Subscriber and the Service Provider

Based on Traffic Management specifications in MEF 10

Ethernet Service Performance Attributes

Frame Delay Service Performance Frame Delay Variation Service Performance Frame Loss Ratio Service Performance

Measured per EVC and per Class of Service

Requires continuous, accurate, accountable measurements onoperational networks

S


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MEF 14 for Service ProvidersWorlds First Service Quality Certification Program

Significance

Integral to Carrier Ethernetgoals and attributes

First standardized QoScertification for ServiceProviders on any technology or service

Implements Test Cases Defined in MEF 14

Provides the standard to measure and enforce premiumCarrier Ethernet Services

Makes Carrier Ethernet directly competitive with premium

legacy services Provide the standard to enforce Carrier Ethernet that

delivers residential triple play data/voice/video services.


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New Service Provider Certification to MEF 14

Service Performance

Frame Delay Service Performance Interactive voice, video and many data applications Frame Delay Variation Service Performance

Critical for VoIP, non-buffered video and time sensitive data applications

Frame Loss Ratio Service Performance Critical for voice, video quality and most data applications

Bandwidth Profile Rate Enforcement(Collectively the following ensure performance at the granular Ethernet ServiceSpecification level):

Bandwidth Profile per Ingress UNI Bandwidth Profile per EVC

Bandwidth Profile per Class of Service Multiple Bandwidth Profiles at the UNI

Forging Ahead


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Forging AheadThe MEF Certification Program in 2007-2008

Certification of Ethernet Access Technologies Starting with Ethernet in the First Mile Plans to extend to wireless mesh

Certification of Circuit Emulation Services

Based on Abstract Test Suite for MEF 8 in final ballot

In the future as the E-NNI Technical Specificationfirms up we can expect the certification program tocover this area

The MEF Certification Program Roadmap: Track the progress of the MEF Technical

Specifications

Forging Ahead


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Forging AheadThe MEF Certification Program in 2007-2008


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Accelerating Worldwide Adoption ofCarrier-class Ethernet Networks and Services

testing ethernet services

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