MEF 58 Legato – EVC Services YANG – Service Configuration and Activation

2017 Nov

Product Portfolio: LSO Legato, Carrier Ethernet

Standard Type: Information and Data Models

Tags: NRP (Network Resource Provisioning), MRM (MEF Resource Models)


This document specifies the YANG modules for MEF 6.2 EVC based Services and MEF 10.3 Ethernet Services Attributes.

Supporting Materials:


This document specifies the YANG modules for MEF 6.2 EVC based Services and MEF 10.3 Ethernet Services Attributes. These modules are for use in Service Orchestration Function (SOF) and to communicate the configuration state for Service attributes and values with other entities, such as Business Applications or Partners or Customers, specified in MEF 55 Lifecycle Service Orchestration Reference Architecture. One use of these modules is for the use cases at Legato reference point for Service Configuration and Activation (SCA) specified in MEF 56 SCA (Legato) Interface Profile specification. The elements of the YANG modules are aligned with the objects identified in MEF 7.3 Carrier Ethernet Service Information Model. 

This document normatively includes the following EVC Services YANG Modules in the distribution ( 

1. mef-global@2017-07-27.yang
2. mef-legato-service@2017-07-27.yang
3. mef-legato-interfaces@2017-07-27.yang 4. mef-types@2017-07-27.yang 

In addition, the distribution ( includes the following informative content: 

a) YANG tree (@2017-07-27) for each of the YANG Modules 

b) JSON (@2017-07-27) request/response format, for each of the YANG Modules, generat- ed using PYANG tool ( with Swagger plugin ( to use in a REST/http ( API, and, 

c) Example XML configuration file with Netconf for an example EPL service described in Appendix A of MEF 6.2. 

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