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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
UntaggedPriority Tagged
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
UntaggedPriority Tagged
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
UntaggedPriority Tagged
Tagged XTagged XTagged XTagged X YES for a SUBSET of Service Frames Tagged X
X* X*Bidirectional
UntaggedPriority Tagged
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
UntaggedPriority Tagged
Tagged XUntaggedUntaggedUntagged NO for all Service F rames
X Y*Unidirectional
Tagged X Untagged NO for all Service F rames
X* YUnidirectional
UntaggedPriority Tagged
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:
95 Test Cases of which 63 are mandatory
For E-LAN Services:
101 Test Cases of which 67 are mandatory
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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