1. MEF Service Types and Service Definitions Overview and Use Cases
Ralph Santitoro
Presentation best viewed in slideshow mode

2. 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

3. Ethernet Access Provider
P2P EVC
The “Big Picture” View for Site to Site Services Point-to-Point EVC Example
P2P OVC1
P2P OVC2
UNI1
UNI2
ENNI
Retail
Service Provider
Ethernet Access Provider
E-NNI
Subscriber
Subscriber
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

4. Ethernet Service Definition Framework
Ethernet Service Type
Ethernet Service Attribute
Ethernet Service Attribute
Parameter
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 Type: Marketing term to categorize a service

5. Ethernet Service Definition Framework
Ethernet Service Type
Ethernet Service Attribute
Ethernet Service Attribute
Parameter
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
Service Attributes Enable Service Differentiation

6. Ethernet Service Classification and Definitions for EVC-based Services
Service Type
Port-Based Service
VLAN-Aware
Service
E-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

7. Access Ethernet Private Line Access Ethernet Virtual Private Line
Ethernet Service Classification and Definitions for Ethernet Access Services (UNI to ENNI)
Service Type
Port-Based Service
(at the UNI)
VLAN-Aware Service
E-Access
Access 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 service
Access EVPL = VLAN-aware P2P Ethernet access service

8. Frequently Asked Questions

9. 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

10. This section should be viewed in slide show mode
Use cases and examples
This section should be viewed in slide show mode

11. Ethernet Private Line (EPL) example that uses Access EPL
P2P EVC
Ethernet Private Line (EPL) example that uses Access EPL
P2P OVC1
P2P OVC2
UNI1
UNI2
ENNI
Retail
Service Provider
Ethernet Access Provider
E-NNI
Subscriber
Subscriber
Access EPL ordered
EPL delivered
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

12. Internet Access Service example using Access EPL
P2P OVC
UNI
ENNI
Ethernet Access Provider
Internet
Service Provider
E-NNI
Subscriber
Access EPL ordered
ISP orders Access EPL from Ethernet Access Provider
Access provider constructs OVC between Subscriber UNI and ENNI
ISP delivers Internet Access Service

13. EVPL Example using Access EPL
P2P EVC
EVPL Example using Access EPL
P2P OVC1
P2P OVC2
UNI1
UNI2
ENNI
Retail
Service Provider
Ethernet Access Provider
P2P EVC
E-NNI
Subscriber Site 1
Subscriber Site 2
Access EPL ordered
EVPL1 delivered
EVPL2 delivered
Subscriber Site 3
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

14. EVPL Example using Two Access EPLs
Retail
Service Provider
Ethernet
Access Provider
ENNI
UNI3
UNI1
EVPL1
E-NNI
Subscriber Site 1
Access EPL1
Subscriber Site 2
EVPL2
Access EPL2
UNI2
Subscriber Site 3
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

15. EP-LAN Service example using 2 Access EPL tail circuits
Retail
Service Provider
Ethernet
Access Provider1
Ethernet
Access Provider2
UNI2
UNI1
EP-LAN
Subscriber Site 1
Subscriber Site 2
Access EPL1
Access EPL2
E-NNI1
E-NNI2
UNI3
Subscriber Site 3
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
Two off-net sites reached using Access EPLs

16. EVPL Example using 1 Access EPL and 2 Access EVPLs
Ethernet
Access Provider2
Retail
Service Provider
Ethernet
Access Provider1
UNI2
UNI1
Access EVPL1
EVPL1
Subscriber Site 2
EVPL2
Subscriber Site 1
Access EVPL2
Access EPL
ENNI1
ENNI2
UNI3
Subscriber Site 3
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
2 OVCs multiplexed at UNI2
Retail Service Provider delivers EVPL2 to Subscriber
To connect Subscriber Site 2 UNI2 and Site 3 UNI3

17. 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