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MEF Service Types and Service DefinitionsOverview and Use Cases

Ralph Santitororalph.santitoro@us.fujitsu.com

Presentation best viewed in slideshow mode

22011 Q2 QUARTERLY MEETING – PRAGUE, CZECH REPUBLIC

Update from 1Q11 Quarterly Meeting in Miami

• Specification name change– OVC Services Definitions changed to:

Ethernet Access Services Definitions

• Terminology Changes– E-Access Line Service Type changed to:

E-Access Service Type • Why? Enables single service type to cover current

Point-to-Point and future Multipoint services– Service Definition Name Changes:

• E-APL renamed to Access EPL• E-AVPL renamed to Access EVPL

• New Term Defined: Ethernet Access Provider

32011 Q2 QUARTERLY MEETING – PRAGUE, CZECH REPUBLIC

The “Big Picture” View for Site to Site Services Point-to-Point EVC Example

• UNIs at Subscriber Locations

• ENNI between:– Ethernet Access Provider (operator) and Retail Service Provider

• Point-to-Point (P2P) OVCs between:– OVC1 between Subscriber UNI1 and Ethernet Access Provider ENNI– OVC2 Retail Service Provider ENNI and Subscriber UNI2

• P2P EVC between Subscriber UNIs

E-NNI

Ethernet Access Provider

Retail Service Provider

UNI1 UNI2

P2P OVC1 P2P OVC2

Su

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ENNI

P2P EVC

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Ethernet Service Definition Framework

• UNI-to-UNI (EVC-based) Service Types (MEF 6.1)– E-Line: Point-to-Point– E-LAN: Multipoint-to-Multipoint– E-Tree: Rooted Multipoint

• UNI(s) to ENNI (OVC-based) Service Type (New Spec.)– E-Access

• Point-to-Point services currently being defined• Multipoint-to-Multipoint services may be defined

– In future update to specification

Ethernet Service

TypeEthernet Service

Attribute

Ethernet Service

AttributeParameter

Ethernet Service Type: Marketing term to categorize a service

52011 Q2 QUARTERLY MEETING – PRAGUE, CZECH REPUBLIC

Ethernet Service Definition Framework

• Ethernet Service Attributes and Parameters (per Service Type)– Specifies requirements for:

• EVCs, UNIs, EVC per UNI • OVC per UNI or ENNI endpoint• Layer 2 Control Protocol (L2CP) disposition

Ethernet Service

TypeEthernet Service

Attribute

Ethernet Service

AttributeParameter

Service Attributes Enable Service Differentiation

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Ethernet Service Classification and Definitions for EVC-based Services

Service TypePort-Based

ServiceVLAN-Aware

ServiceE-Line

(Point-to-Point EVC)Ethernet Private Line

(EPL)Ethernet Virtual Private Line

(EVPL)

E-LAN (multipoint-to-multipoint EVC)

Ethernet Private LAN(EP-LAN)

Ethernet Virtual Private LAN(EVP-LAN)

E-Tree(rooted multipoint EVC)

Ethernet Private Tree(EP-Tree)

Ethernet Virtual Private Tree(EVP-Tree)

• MEF EVC-based services are classified into 2 categories:– Port-based

• Single Service Instance (EVC) per UNI (dedicated UNI)

– VLAN-aware• Multiple Service Instances (EVCs) per UNI (multiplexed UNI)

Ethernet Service Types are “Umbrella” categories

72011 Q2 QUARTERLY MEETING – PRAGUE, CZECH REPUBLIC

Ethernet Service Classification and Definitions for Ethernet Access Services (UNI to ENNI)

Service Type Port-Based Service (at the UNI)

VLAN-Aware Service (at the UNI)

E-AccessAccess Ethernet

Private Line(Access EPL)

Access Ethernet Virtual Private Line(Access EVPL)

Ethernet Access Services classified into two categories (just like EVC-based services):

• Port-based at the UNI endpoint• Single OVC Instance per UNI (dedicated UNI endpoint)

• VLAN-aware at the UNI endpoint• Multiple OVC Instances per UNI endpoint (multiplexed UNI endpoint)

• ENNI supports multiplexed Access EPLs or Access EVPLs

Access EPL = Port-based P2P Ethernet access serviceAccess EVPL = VLAN-aware P2P Ethernet access service

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Frequently Asked Questions

92011 Q2 QUARTERLY MEETING – PRAGUE, CZECH REPUBLIC

Ethernet Access Services FAQs

• Ethernet Access Services are point-to-point. Does this limit retail services to E-Line ?– No. Any E-Line (P2P) and E-LAN (MP2MP) services can

be delivered using Ethernet Access Services.

• Access EPL is defined with a single CoS. Does this limit a retail service to a single CoS?– No. Retail provider can define a multi-CoS service.– Access EPL CoS must be selected to meet the multi-CoS

requirements

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Use cases and examples

This section should be viewed in slide show mode

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Ethernet Private Line (EPL) example that uses Access EPL

• Retail Provider orders Access EPL from Ethernet Access Provider– Access provider constructs OVC1 between Subscriber UNI1 and ENNI

• Retail Service Provider constructs OVC– OVC2 between ENNI and Subscriber UNI2

• Retail Provider constructs EVC between subscriber locations

• Retail Service Provider delivers EPL to Subscriber

E-NNI

Ethernet Access Provider

Retail Service Provider

UNI1 UNI2

P2P OVC1

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P2P OVC2P2P EVCAccess EPL ordered

EPL delivered

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Internet Access Service example using Access EPL

• ISP orders Access EPL from Ethernet Access Provider– Access provider constructs OVC between Subscriber UNI and ENNI

• ISP delivers Internet Access Service

E-NNI

Ethernet Access Provider

Internet Service Provider

UNI

P2P OVC

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Access EPL ordered

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EVPL Example using Access EPL

• Retail Provider orders Access EPL from Ethernet Access Provider– Access Provider constructs OVC between Subscriber UNI1 and ENNI

• Retail Service Provider constructs OVC2 between:– ENNI and Subscriber UNI2

• Retail Provider constructs P2P EVC between subscriber sites 1 & 2– Retail Provider delivers EVPL1 to Subscriber

• Subscriber adds new site and wants to connect to site 2• Retail Provider constructs P2P EVC between subscriber sites 2 & 3

– Retail Service Provider delivers EVPL2 to Subscriber

E-NNI

Ethernet Access Provider

Retail Service Provider

UNI1 UNI2

P2P OVC1

Su

bscrib

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ub

scri

ber

Sit

e 1

ENNI

P2P OVC2P2P EVCAccess EPL ordered

EVPL1 delivered

P2P EVC

EVPL2 deliveredSubscriber Site 3

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EVPL Example using Two Access EPLs

• Retail Provider buys Access EPL1 from Ethernet Access Provider– To connect Subscriber Site 1 UNI1 to ENNI

• Retail Provider buys Access EPL2 from Ethernet Access Provider– To connect Subscriber Site 2 UNI2 to ENNI

• Retail Service Provider sells EVPL1 to Subscriber– To connect Subscriber Sites 1 and 2

• Retail Service Provider sells EVPL2 to Subscriber– To connect Subscriber Sites 2 and 3

E-NNI

Ethernet Access Provider

Retail Service Provider

UNI1

UNI2

UNI3

Su

bscrib

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Sit

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ENNI

Access EPL1

Access EPL 2EVPL2

Subscriber Site 3

EVPL1

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EP-LAN Service example using 2 Access EPL tail circuits

• Retail Provider buys Access EPL1 Ethernet Access Provider1– To connect Subscriber Site 1 UNI1 to ENNI1

• Retail Provider buys Access EPL2 from Ethernet Access Provider2– To connect Subscriber Site 2 UNI2 to ENNI2

• Retail Service Provider sells EP-LAN to Subscriber– To connect Subscriber Sites 1, 2 and 3

Ethernet Access Provider1

Retail Service ProviderUNI1

UNI2

Subscriber Site 2Subs

crib

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ite 1

E-NNI1

Access EPL1

Subscriber Site 3

Two off-net sites reached using Access EPLs

Ethernet Access Provider2

E-NNI2

UNI3

Access EPL2

EP-LAN

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EVPL Example using 1 Access EPL and 2 Access EVPLs

• Retail Provider buys Access EPL from Ethernet Access Provider1 – To connect Subscriber Site 1 UNI1 to ENNI1

• Retail Provider buys Access EVPL1 from Ethernet Access Provider2– To connect Subscriber Site 2 UNI2 to ENNI2

• Retail Service Provider delivers EVPL1 to Subscriber– To connect Subscriber Sites 1 UNI1 and 2 UNI2

• Retail Provider buys Access EVPL2 from Ethernet Access Provider2– To connect Subscriber Site 2 UNI2 to ENNI2– 2 OVCs multiplexed at UNI2

• Retail Service Provider delivers EVPL2 to Subscriber– To connect Subscriber Site 2 UNI2 and Site 3 UNI3

Ethernet Access Provider1

Retail Service ProviderUNI1

UNI2

Subscriber Site 2Su

bscr

iber

Site

1

ENNI1

Access EPL

Subscriber Site 3

Ethernet Access Provider2

ENNI2UNI3

EVPL1

Access EVPL1

Access EVPL2

EVPL2

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Summary

• EVCs can be composed of 2 or more OVCs– If there is no ENNI, there are no OVCs

• New E-Access Ethernet Service Type– Category of services which provide connectivity between one or

more UNIs and one ENNI– Targeting Wholesale Ethernet Access Services

• Access EPL (Access Ethernet Private Line)– Port-based P2P Ethernet Access Service Definition

• Supporting 1 access service per UNI– Consists of 1 UNI and 1 ENNI

• Access EVPL (Access Ethernet Virtual Private Line)– VLAN-aware P2P Ethernet Access Service Definition

• Supports multiple access services per UNI– Consists of 1 UNI and 1 ENNI