Ethernet Service Types and Definitions - marcom

Report
MEF Service Types and Service Definitions
Overview and Use Cases
Ralph Santitoro
[email protected]
Presentation best viewed in slideshow mode
1
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
2011 Q2 QUARTERLY MEETING – PRAGUE, CZECH REPUBLIC
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The “Big Picture” View for Site to Site Services
UNI1
ENNI
Retail
Ethernet Access
Service Provider
E-NNI Provider
P2P OVC1 P2P EVC
P2P OVC2
UNI2
Subscriber
Subscriber
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
2011 Q2 QUARTERLY MEETING – PRAGUE, CZECH REPUBLIC
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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
Marketing
termCZECH
to categorize
a service 4
2011Type:
Q2 QUARTERLY
MEETING – PRAGUE,
REPUBLIC
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
2011 Q2 QUARTERLY MEETING – PRAGUE, CZECH REPUBLIC
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Ethernet Service Classification and Definitions
for EVC-based Services
Service Type
E-Line
(Point-to-Point EVC)
Port-Based
Service
VLAN-Aware
Service
Ethernet Private Line Ethernet Virtual Private Line
(EPL)
(EVPL)
E-LAN
Ethernet Private LAN Ethernet Virtual Private LAN
(EP-LAN)
(EVP-LAN)
(multipoint-to-multipoint EVC)
E-Tree
(rooted multipoint EVC)
Ethernet Private Tree Ethernet Virtual Private Tree
(EP-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
2011 Q2 QUARTERLY
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– PRAGUE,
CZECH REPUBLIC
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Ethernet Service Classification and Definitions
for Ethernet Access Services (UNI to ENNI)
Service Type
E-Access
Port-Based Service
VLAN-Aware Service
(at the UNI)
(at the UNI)
Access Ethernet Access Ethernet Virtual
Private Line
Private Line
(Access EPL)
(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
2011 Q2 QUARTERLY MEETING – PRAGUE, CZECH REPUBLIC
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Frequently Asked Questions
8
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
2011 Q2 QUARTERLY MEETING – PRAGUE, CZECH REPUBLIC
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Use cases and examples
This section should be viewed in slide
show mode
10
UNI1
Retail
Ethernet Access
Service Provider
E-NNI Provider
Access
EPL
P2P OVC
P2P EVC P2P OVC2
ordered 1
ENNI
UNI2
Subscriber
Subscriber
Ethernet Private Line (EPL) example that uses Access EPL
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
2011 Q2 QUARTERLY MEETING – PRAGUE, CZECH REPUBLIC
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Subscriber
Internet Access Service example using Access EPL
UNI
Ethernet Access
E-NNI Provider
Access
EPL
P2P OVC
ordered
ENNI
Internet
Service
Provider
• ISP orders Access EPL from Ethernet Access Provider
– Access provider constructs OVC between Subscriber UNI and ENNI
• ISP delivers Internet Access Service
2011 Q2 QUARTERLY MEETING – PRAGUE, CZECH REPUBLIC
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UNI1
Retail
Ethernet Access
Service Provider
Provider
E-NNI
P2P OVC
P2P OVC2
Access
EPL1 P2P EVC
ordered
ENNI
UNI2
Subscriber Site 2
Subscriber Site 1
EVPL Example using Access EPL
EVPL2
EVPL1
delivered 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
deliversMEETING
EVPL2–toPRAGUE,
Subscriber
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CZECH REPUBLIC
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Ethernet
Access Provider
UNI1
E-NNI
ENNI
Access EPL1
Retail
Service Provider
EVPL1
UNI2
UNI3
Subscriber Site 2
Subscriber Site 1
EVPL Example using Two Access EPLs
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
2011 Q2 QUARTERLY MEETING – PRAGUE, CZECH REPUBLIC
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Ethernet
UNI1 Access Provider
1
Access EPL1
E-NNI1
Retail
Service Provider
Ethernet
UNI
Access Provider2 2
EP-LAN
E-NNI2
UNI3
Access EPL2
Subscriber
Site 3
Subscriber Site 2
Subscriber Site 1
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
Two off-net sites reached using Access EPLs
2011 Q2 QUARTERLY MEETING – PRAGUE, CZECH REPUBLIC
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Ethernet
UNI1 Access Provider
1
Access EPL
ENNI1
Retail
Service Provider
EVPL1
UNI3
Ethernet
Access Provider2
UNI2
ENNI2
Subscriber Site 2
Subscriber Site 1
EVPL Example using 1 Access EPL and 2 Access EVPLs
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
– 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 UNI
3 UNI
2 and–Site
3
2011 Q2 QUARTERLY
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PRAGUE,
CZECH
REPUBLIC
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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
2011 Q2 QUARTERLY MEETING – PRAGUE, CZECH REPUBLIC
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