API Catalog

An EVC is an association of two or more EVC End Points (EVC EPs). Reference MEF 10.4 Section 7.8 Ethernet Virtual Connection, EVC End Point and EVC EP Map Service Attribute.

A CarrierEthernetEvcEndPoint is a construct at a UNI that selects a subset of the Service Frames that pass over the UNI. A CarrierEthernetEvcEndPoint represents the logical attachment of an EVC to a UNI. Reference MEF 10.4 Section 10 EVC EP Service Attributes. NOTE-CarrierEthernetEvcEndPoint inherits from CarrierEthernetServiceEndPoint.

Operator UNI Service Attributes describe the agreement between the Service Provider and the Operator of the behavior observable at the UNI. These are distinct from the Subscriber UNI Service Attributes that describe the agreement between an Ethernet Service (EVC) Subscriber and the Ethernet Service Provider. All of these Service Attributes can be modified after initial provisioning of the UNI [...]

The Operator Virtual Connection (OVC) is the building block for constructing an EVC spanning multiple Operator CENs. Reference MEF 26.2 Section 8.8 Operator Virtual Connection.

An OVC End Point is a logical entity at a given External Interface that is associated with a distinct set of frames passing over the External Interface. Reference MEF 26.2 Section 16 OVC End Point Service Attributes.

The Subscriber UNI Service Attributes values are agreed to by the Subscriber and the Service Provider to describe the behavior of the UNI.

This class represents the Virtual UNI Service Attributes that are agreed on by the SP/SO and the Operator for each UNI. Reference MEF 26.2 Section 15 Virtual UNI (VUNI), Feeder OVC, and Remote UNI (RUNI).

A single point-to-point physical Ethernet channel or multiple physical Ethernet links combined into a Link Aggregation Group. The Ethernet frames associated with a given UNI Access Link can be either untagged/priority-tagged or VLAN tagged. Reference - MEF 61.1.1 A1-1.3 Ethernet UNI Access Link Trunk Service Attributes.

An External Network Network Interface (ENNI) is the demarcation point between the responsibility of one Operator and another - in other words, it is the interface where the two Operators interconnect. Reference MEF 61.1 Section 8.2 ENNI and ENNI Links.

An ENNI can comprise one or more distinct IP Links, each of which is a single IP hop. These links are known as ENNI Links, and typically each corresponds to a distinct IP subnet (which can have both IPv4 and IPv6 addressing). ENNI Links are assumed to be point-to-point. Reference MEF 61.1 Section 8.2 ENNIs and ENNI Links.

A User Network Interface (UNI) is the demarcation point between the responsibility of the SP and the responsibility of the Subscriber. Note that a given UNI always relates to a single SP and a single Subscriber. Reference MEF 61.1 Section 7.3 UNIs and UNI Access Links.

An individual connection between the Subscriber and the SP that forms part of a UNI. Reference MEF 61.1 Section 7.3 UNIs and UNI Access Link.