Transcript Introduction to Ethernet Services

Introduction to Ethernet Services
Moderator and Panelists
Ralph Santitoro
Director of Carrier Ethernet Solutions
Turin Networks
MEF Director & Co-chair Security Group
[email protected]
Arie Goldberg
CEO and Chief Technologist
Omnitron Systems
MEF Director and Secretary
[email protected]
Brian Bortz
CEO
Resolute Networks
[email protected]
Paul Indoo
Product Marketing Manager
Nortel
[email protected]
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
3
Introduction
Ralph Santitoro - Moderator
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 Service
5
MEF Carrier Ethernet Terminology
- User to Network Interface (UNI)
• Ethernet service demarcation
point
– between customer (subscriber)
and service provider
• Physical Ethernet Interface
operating at:
–
–
–
–
CE
customer
responsibility
10Mbps
100Mbps
1Gbps
10Gbps
Carrier
Ethernet
Network
UNI
Service provider
responsibility
6
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)
7
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 Framework
8
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
9
MEF Ethernet Service Definition Classification
Port-Based
VLAN-Based
(All-to-One Bundling)
(Service Multiplexed)
E-Line
Ethernet Private Line
Ethernet Virtual Private Line
(Point-to-Point EVC)
(EPL)
(EVPL)
Ethernet Private LAN
Ethernet Virtual Private LAN
(EP-LAN)
(EVP-LAN)
E-Tree
Ethernet Private Tree
Ethernet Virtual Private Tree
(rooted multipoint EVC)
(EP-Tree)
(EVP-Tree)
Service Type
E-LAN
(multipoint-tomultipoint EVC)
• 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)
10
Service Definitions
Brian Bortz
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
UNI
UNI
CE
UNI
Storage
Service
Provider
CE
Carrier Ethernet
Network
ISP
POP
Internet
UNI
Point-to-Point EVCs
CE
12
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
UNI
UNI
CE
Carrier Ethernet Network
CE
UNI
CE
Point-to-Point EVCs
13
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
UNI
CE
UNI
CE
Carrier
Ethernet
Network
UNI
Multipoint-to-Multipoint EVC
CE
Ethernet Private LAN example
14
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
Carrier Ethernet Network
UNI
CE
Leaf
Root
Leaf
CE
UNI
UNI
Leaf
CE
Rooted-Multipoint EVC
UNI
Ethernet Private Tree example
CE
15
Service Attributes
Arie Goldberg
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
17
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-2
EVC-1
EIR
EVC-3
10Mbps
UNI
(port)
UNI
EVC1
EVC2
CoS 6
1Mbps CIR
for VoIP
CoS 2
6Mbps CIR
for VPN
data traffic
3Mbps for
Internet Access
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
EIR improves the network’s Goodput
18
Ethernet Service Application Examples
Paul Indoo
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
Internet
Branch
EPL
EPL
• Bandwidth Profile options
– Flexible options to offer full line
rate or sub-rate services
– Example:
• 10Mbps Ethernet UNI
EPL
Firewall
Branch
HQ
– 10Mbps CIR (line rate) or
– 5Mbps CIR (sub-rate)
20
Ethernet Virtual Private Line (EVPL) Example
Internet Service
Provider (ISP)
Service Multiplexed UNI
VLAN 178  Blue
VLAN 179  Yellow
VLAN 180  Green
VLAN 2000  Green
ISP
Customer 3
VLAN 2000  Blue
ISP
Customer 1
VLAN 2000  Yellow
ISP
Customer 2
• Efficient use of ISP router ports
• Easy configuration at ISP customer sites
• This port and VLAN 2000 (or even untagged) to ISP
21
Ethernet Virtual Private LAN (EVP-LAN) Example
Service Multiplexing
C
Credit Card
Processor
D
A
Retailer A
EVC1
EVC2
B
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
22
Ethernet Private Tree (EP-Tree) Example
A
Internet Service
Provider (ISP)
D
Root
Residential
Customer A
B
EVC1
C
Leaves
Residential
Customer B
Residential
Customer C
• 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
23
Ethernet Virtual Private Tree (EVP-Tree) Example
Newscast Video Provider
Service Multiplexing
Leaves
A
Internet
Service
Provider (ISP)
D
B
EVC1
Root
Hotel Customer A
C
Hotel Customer B
Hotel Customer C
Leaves
• 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
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Q&A
Ralph Santitoro
Director of Carrier Ethernet Solutions
Turin Networks
MEF Director & Co-chair Security Group
[email protected]
Arie Goldberg
CEO and Chief Technologist
Omnitron Systems
MEF Director and Secretary
[email protected]
Brian Bortz
CEO
Resolute Networks
[email protected]
Paul Indoo
Product Marketing Manager
Nortel
[email protected]
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