Introduction to Ethernet Services
Moderator and Panelists
Ralph SantitoroDirector of Carrier Ethernet SolutionsTurin NetworksMEF Director & Co-chair Security [email protected]
Arie GoldbergCEO and Chief TechnologistOmnitron Systems MEF Director and [email protected]
Brian BortzCEOResolute [email protected]
Paul IndooProduct Marketing Manager [email protected]
3
Agenda
• Carrier Ethernet Terminology– UNI, NNI– Ethernet Virtual Connections (EVCs)– E-Line, E-LAN and E-Tree Services Types
• Ethernet Service Definitions– EPL and EVPL– EP-LAN and EVP-LAN– EP-Tree and EVP-Tree
• Ethernet Service Attributes– EVC and UNI Service Attributes– Bandwidth Profiles– Traffic Management
• Ethernet Service Application Examples
Introduction
Ralph Santitoro - Moderator
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Carrier Ethernet Terminology
• User to Network Interface (UNI)– Physical interface/demarcation between service
provider/Cable Operator/Carrier/ and subscriber
• Ethernet Virtual Connection (EVC)– Logical representation of an Ethernet service as defined
by the associate between 2 or more UNIs
• Network to Network Interface (NNI)– Demarcation between carrier Ethernet networks operated
by one or more carriers
UNI, EVC and NNI are the Fundamental Constructs of an Ethernet ServiceUNI, EVC and NNI are the Fundamental Constructs of an Ethernet Service
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Service provider responsibilityUNIUNI
Carrier Ethernet Network
MEF Carrier Ethernet Terminology- User to Network Interface (UNI)
• Ethernet service demarcation point– between customer (subscriber)
and service provider
• Physical Ethernet Interface operating at: – 10Mbps– 100Mbps– 1Gbps– 10Gbps
CECE
customer responsibility
7
MEF Carrier Ethernet Terminology - Ethernet Virtual Connection (EVC)
• An Ethernet Service Instantiation– Most commonly identified via 802.1ad S-VLAN ID
• Connects two or more subscriber sites (UNIs)– Can multiplex multiple EVCs on the same UNI
• Three types of EVCs defined by MEF– Point-to-Point– Multipoint-to-Multipoint– Rooted Multipoint (Point-to-Multipoint)
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MEF Ethernet Service Definition Framework
• Ethernet Service Type– Categorizes the service based on its EVC type
• Point-to-Point, Multipoint-to-Multipoint or Rooted Multipoint Ethernet Service Attributes and Parameters
• Ethernet Service Attributes– Specifies the UNI & EVC requirements for each Ethernet Service Type
The MEF defines Ethernet Services using this FrameworkThe MEF defines Ethernet Services using this Framework
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Carrier Ethernet: Three Ethernet Service Types
• E-Line Service Type– Ethernet Private Lines– Virtual Private Lines (site-to-site Layer 2 VPNs)– Ethernet Internet Access
• E-LAN Service Type– Multi-site Layer 2 VPNs– Transparent LAN Service
• E-Tree Service Type– Point-to-Multipoint Infrastructure– Triple play backhaul– Cell sites backhauled to mobile switching center
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MEF Ethernet Service Definition Classification
Service TypeService Type Port-BasedPort-Based(All-to-One Bundling)(All-to-One Bundling)
VLAN-BasedVLAN-Based(Service Multiplexed)(Service Multiplexed)
E-LineE-Line(Point-to-Point EVC)(Point-to-Point EVC)
Ethernet Private LineEthernet Private Line(EPL)(EPL)
Ethernet Virtual Private LineEthernet Virtual Private Line(EVPL)(EVPL)
E-LANE-LAN (multipoint-to-multipoint (multipoint-to-multipoint
EVC)EVC)
Ethernet Private LANEthernet Private LAN(EP-LAN)(EP-LAN)
Ethernet Virtual Private LANEthernet Virtual Private LAN(EVP-LAN)(EVP-LAN)
E-TreeE-Tree(rooted multipoint EVC)(rooted multipoint EVC)
Ethernet Private TreeEthernet Private Tree(EP-Tree)(EP-Tree)
Ethernet Virtual Private TreeEthernet Virtual Private Tree(EVP-Tree)(EVP-Tree)
• MEF Services are classified into two categories:– Port-based
• Single Service Instance per UNI (dedicated network resource)– VLAN-based
• Multiple Service Instances per UNI (shared network resource)
Service Definitions
Brian Bortz
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Services Using E-Line Service Type
• Ethernet Private Line (EPL)– Replaces a TDM Private line– Port-based service with single service (EVC) across
dedicated UNIs providing site-to-site connectivity– Typically delivered over SDH (Ethernet over SDH)– Most popular Ethernet service due to its simplicity
Point-to-Point EVCs
Carrier Ethernet Network
CECE UNIUNI
CECEUNIUNI
CECE
UNIUNI
ISPPOP
UNIUNI
Storage Service Provider
Internet
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Services Using E-Line Service Type
• Ethernet Virtual Private Line (EVPL)– Replaces Frame Relay or ATM L2 VPN services
• To deliver higher bandwidth, end-to-end services– Enables multiple services (EVCs) to be delivered over single physical
connection (UNI) to customer premises– Supports “hub and spoke” connectivity via Service Multiplexed UNI at
hub site• Similar to Frame Relay or Private Line hub and spoke deployments
Service Multiplexed
Ethernet UNI
Point-to-Point EVCs
Carrier Ethernet Network
CECE
UNIUNI
CECE
UNIUNI
CECE
UNIUNI
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Services Using E-LAN Service Type
• Ethernet Private LAN (EP-LAN) and Ethernet Virtual Private LAN (EVP-LAN) Services– Supports dedicated or service-multiplexed UNIs – Supports transparent LAN services and multipoint Layer
2 VPNs
Multipoint-to-Multipoint EVC
Carrier Ethernet Network
CECEUNIUNI
UNIUNI
CECE
CECE
UNIUNI
Ethernet Private LAN example
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Services Using E-Tree Service Type
• Ethernet Private Tree (EP-Tree) and Ethernet Virtual Private Tree (EVP-Tree) Services– Enables Point-to-Multipoint Services with less provisioning
than using EVPLs for large hub & spoke deployments• Provides traffic separation between users (Leaf UNIs)• Each “Leaf” UNI interchanged with “Root” UNI(s)• No exchange of traffic between “Leaf” UNIs
Root
Carrier Ethernet Network
CECEUNIUNI
UNIUNI
UNIUNI
CECE
CECE
Leaf
Leaf
UNIUNI
CECE
Leaf
Rooted-Multipoint EVC
Ethernet Private Tree example
Service Attributes
Arie Goldberg
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Service Attributes
• EVC Service Attributes– Details regarding the EVC including:
• Bandwidth profiles• CoS Identification• Service Performance
– Frame Delay (Latency)– Frame Delay Variation (Jitter)– Frame Loss Ratio
• UNI Service Attributes– Details regarding the UNI including:
• Physical interface capabilities• Service multiplexing capability• C-VLAN bundling capability
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EVC Service Attributes
Bandwidth Profiles per EVC (service) and per CoS– CIR (Committed Information Rate)
• CIR assured via Bandwidth Reservation and Traffic Engineering
– EIR (Excess Information Rate)
• EIR bandwidth is considered ‘excess’
• Traffic dropped at congestion points in the network
– CBS/EBS (Committed/Excess Burst Size)
• Higher burst size results in improved performance
EVC-1
CIR
EIREVC-2
CIR
EIR
EVC-3
CIR
EIR
UNIEVC 1
CoS 61Mbps CIR for VoIP
CoS 26Mbps CIR for VPN data traffic
3Mbps for Internet AccessEVC 2
10Mbps UNI
(port)
BWPs can divide bandwidth per EVC (service) over a single UNI
– Multiple services over same port (UNI)– CoS markings enable the network to
determine the network QoS to provide
CIR defines the assured bandwidth CIR defines the assured bandwidth EIR improves the network’s Goodput EIR improves the network’s Goodput
Ethernet Service Application Examples
Paul Indoo
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Ethernet Private Line (EPL) Example
• Simple configuration– Port to the Internet is “un-trusted”– Port to the branches is “trusted”– No coordination between
Enterprise and Service Provider• for Enterprise to Headquarters
(HQ) to Branch Subnets
• Bandwidth Profile options– Flexible options to offer full line
rate or sub-rate services– Example:
• 10Mbps Ethernet UNI– 10Mbps CIR (line rate) or
– 5Mbps CIR (sub-rate)HQ
Branch
Branch
EPLEPL
Internet
Firewall
EPL
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Ethernet Virtual Private Line (EVPL) Example
ISPCustomer 1
Internet Service Provider (ISP)
ISPCustomer 2
ISPCustomer 3
Service Multiplexed UNI
VLANVLAN 2000 2000 Blue BlueVLANVLAN 2000 2000 Yellow Yellow
VLANVLAN 2000 2000 Green Green
VLAN 178 VLAN 178 Blue BlueVLAN 179 VLAN 179 Yellow YellowVLAN 180 VLAN 180 Green Green
• Efficient use of ISP router ports• Easy configuration at ISP customer sites
• This port and VLAN 2000 (or even untagged) to ISP
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Ethernet Virtual Private LAN (EVP-LAN) Example
Credit Card Processor
Retailer A
Retailer B
• Redundant points of access for critical availability of Credit Card Processor service
• Multipoint-to-Multipoint service supporting LAN Extension
• Retailer A and B traffic isolated from each other over separate EVCs
Service Multiplexing
A
BD
EVC1
C
EVC2
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Ethernet Private Tree (EP-Tree) Example
A
B
C
D
EVC1
Internet Service Provider (ISP)
Residential Customer A
Root
Leaves
• Efficient use of ISP’s router port
• Simple configuration for each Customer
• Customer’s can’t see each other’s traffic
• Second Root would provide redundant Internet access
Residential Customer B
Residential Customer C
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Ethernet Virtual Private Tree (EVP-Tree) Example
A
B
C
D
EVC1
Internet Service
Provider (ISP)
Hotel Customer A
RootLeaves
Hotel Customer C
Hotel Customer B
• Efficient distribution of News video to Hotel Customers
• Hotel Customers can’t see each other’s traffic, Newscast Video Provider and ISP can’t see each other’s traffic
• Second Root could be added to provide redundant Internet access connections
• Some limits on what routing protocols can be used
Newscast Video Provider
LeavesService Multiplexing
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Q & A
Ralph SantitoroDirector of Carrier Ethernet SolutionsTurin NetworksMEF Director & Co-chair Security [email protected]
Arie GoldbergCEO and Chief TechnologistOmnitron Systems MEF Director and [email protected]
Brian BortzCEOResolute [email protected]
Paul IndooProduct Marketing Manager [email protected]
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