Carrier Ethernet Services can be viewed as the fuel for the digital economy.  The key drivers for the growth of Carrier Ethernet Services are: Expanded service coverage, Bandwidth demand, Extraordinary performance/price advantages, Accelerated service rollout, TDM to CE transition

Carrier Ethernet services can be partitioned in two: Retail and Wholesale services.
Retail Services (also known as Business Services), can be seen as end-to-end services.  In a Carrier Ethernet network, data is transported across Point-to-Point and Multipoint-to-Multipoint Ethernet Virtual Connections (EVCs) according to the attributes and definitions of the E-Line, E-LAN, and E-Tree Service Types defined in the MEF specifications.

Each EVC carries data in the form of Carrier Ethernet Service Frames from UNI to UNI as shown in the diagram. The UNI (User Network Interface) is defined as the physical demarcation point between the responsibility of the Service Provider and the responsibility of the Subscriber.

Additional service types (E-Access and E-Transit) are provided to facilitate wholesale service provider interconnections at the ENNI. The ENNI (External Network Network Interface) is defined as the physical demarcation point between the responsibility of two interconnecting Service Providers.  These services are also named Wholesale Services.
Further, each Service Type consists of both port-based and VLAN aware services, for example, the point-to-point EPL and EVPL services.

Each EVC can be configured with a rich set of attributes like (bandwidth profiles (CIR, EIR, CBS, EBS), multiple classes of service, application-oriented performance objectives, traffic management, forwarding rules, etc.In a Carrier Ethernet network, data is transported across Point-to-Point and Multipoint-to-Multipoint Ethernet Virtual Connections (EVCs) according to the attributes and definitions of the E-Line, E-LAN, and E-Tree Service Types defined in the MEF specifications.

Each EVC carries data in the form of Carrier Ethernet Service Frames from UNI to UNI as shown in the diagram. The UNI (User Network Interface) is defined as the physical demarcation point between the responsibility of the Service Provider and the responsibility of the Subscriber.

An additional service type (E-Access) is provided to facilitate wholesale service provider interconnections at the ENNI. The ENNI (External Network Network Interface) is defined as the physical demarcation point between the responsibility of two interconnecting Service Providers.

Further, each Service Type consists of both port-Based and VLAN aware services, for example, the point-to-point EPL and EVPL services.

Each EVC can be configured with a rich set of attributes that (bandwidth profiles (CIR, EIR, CBS, EBS), multiple classes of service, application-oriented performance objectives, traffic management, forwarding rules, etc.

E-Line
E-LAN
E-Line
E-Line
E-Line
 
 

Public Resources

 

Click "Show More" for descriptions of all CE 2.0 Services, bandwidth profiles, Multi-CoS, traffic management ...

 

CE 2.0 E-Line Services

  • CE 2.0 EPL and EVPL services can be used to create a broad range of point-to-point services
  • A CE 2.0 EPL service uses dedicated UNIs and provides a high degree of transparency such that Service Frames are identical at both the source and destination UNIs.  All-to-one bundling at the UNIs minimizes the coordination between the Subscriber and Service Provider on the definition of the CE-VLAN ID/EVC Map at each UNI
  • A CE 2.0 EVPL service allows for service multiplexing and bundling enabling the support of multiple EVCs at the UNI and the mapping of more than one CE-VLAN ID per EVC

CE 2.0 E-LAN Services

  • CE 2.0 EP-LAN and EVP-LAN services can be used to create a broad range of multipoint-to-multipoint services
  • A CE 2.0 EP-LAN service uses dedicated UNIs and provides a high degree of transparency such that Service Frames are identical at both the source and destination UNIs.  All-to-one bundling at the UNIs minimizes the coordination between the Subscriber and Service Provider on the definition of the CE-VLAN ID/EVC Map at each UNI
  • A CE 2.0 EVP-LAN service allows for service multiplexing and bundling enabling the support of multiple EVCs at the UNI and the mapping of more than one CE-VLAN ID per EVC

CE 2.0 E-Tree Services

  • CE 2.0 EP-Tree and EVP-Tree services can be used to create a broad range of rooted-multipoint services
  • A CE 2.0 EP-Tree service uses dedicated root and leaf UNIs and provides a high degree of transparency such that Service Frames are identical at both the source and destination UNIs.  All-to-one bundling at the UNIs minimizes the coordination between the Subscriber and Service Provider on the definition of the CE-VLAN ID/EVC Map at each UNI
  • A CE 2.0 EVP-Tree service uses root and leaf UNIs and allows for service multiplexing and bundling enabling the support of multiple EVCs at the UNI and the mapping of more than one CE-VLAN ID per EVC

CE 2.0 E-Access Services

  • CE 2.0 Access EPL and Access EVPL services can be used to create a broad range of access services
  • A CE 2.0 Access EPL service interconnects a dedicated UNI and an ENNI.  It provides a high degree of transparency such that Service Frames are delivered unchanged at the ENNI with the addition of an S-VLAN tag and the ENNI Frames are delivered unchanged at the UNI except for the removal of the S-VLAN tag
  • A CE 2.0 Access EVPL service uses a UNI that can support multiple service instances.  Access EVPL provides a high degree of transparency such that Service Frames are delivered unchanged at the ENNI with the addition of an S-VLAN tag and the ENNI Frames are delivered unchanged at the UNI except for the removal of the S-VLAN tag

CE 2.0 E-Transit Services

  • CE 2.0 Transit E-Line and Transit E-LAN services can be used to connect to a broad range of access services
  • A CE 2.0 Transit E-Line service interconnects two ENNI.  It provides a high degree of transparency such that Service Frames are delivered unchanged at the ingress/egress ENNI
  • A CE 2.0 Transit E-LAN service interconnects multiple ENNIs.  It provides a high degree of transparency such that Service Frames are delivered unchanged across all egress ENNIs

Bandwidth Profiles are Governed by

  • CIR Committed Information Rate is Guaranteed Data Rate
  • EIR Excess Information Rate exceeds CIR, but will be delivered “Best Efforts”
  • CBS/EBS Committed/Excess Burst Size

Color Mode

  • Green – Forwarded frames – CIR conforming traffic
  • Yellow – Forward with Best Effort frames – Over CIR , within EIR
  • Red – Discarded frames – Exceeds EIR

Industry’s First Standardized Multi-CoS

  • CoS Differentiates and Prioritizes services
  • Bandwidth Profile Assignment Per CoS
  • Performance Monitoring per CoS

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