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The MEF Certification Program verifies compliance of vendor equipment to MEF technical specifications through a rigorous series of tests based on MEF approved Test Suites. The program currently offers four certifications MEF 9, 14, 18 and 21 covering different aspects of Carrier Ethernet such as the MEF Carrier Ethernet Services, CES over Ethernet and the MEF User Nertwork Interface (UNI). The program tracks the progress of the MEF technical work and will expand as further MEF technical specifications are developed. MEF Carrier Ethernet ServicesMEF 9 and MEF 14 are service-oriented test specification that define a series of Test Cases to verify the ability of a Carrier Ethernet equipment to deliver MEF-compliant Carrier Ethernet Services. MEF 9 certification testing
| MEF 9
| Ethernet Services at the UNI: Verify that Carrier Ethernet E-Line (EPL, EVPL) and ELAN services delivered by a Carrier Ethernet equipment at the UNI comply with the EVC (Ethernet Virtual Connection) and UNI (User Network Interface) Service Attributes defined in MEF 10 Ethernet Services Attributes Phase 1 and the Ethernet Services definitions defined in MEF 6 Metro Ethernet Services Definitions Phase 1.
| Test Cases
| Total of 244 Test Cases including
48 Test Cases for EPL (Ethernet Private Line)
95 Test Cases for EVPL (Ethernet Virtual Private Line)
101 Test Cases for E-LAN (Ethernet LAN)
| Test Plan Excerpt
| Test Plan for Ethernet Services at the UNI | Related Tech Spec
| MEF 9 Abstract Test Suite for Ethernet Services at the UNI
MEF 10 Ethernet Services Attributes Phase 1
MEF 6 Metro Ethernet Services Definitions Phase 1
| | | | MEF 14 certification testing
| MEF 14
| Traffic Management Phase 1: Verify that Carrier Ethernet E-Line (EPL, EVPL) and ELAN services delivered by a Carrier Ethernet equipment at the UNI comply with the EVC (Ethernet Virtual Connection) related Services Performance Attributes and the UNI (User Network Interface) related Bandwidth Profiles Services Attributes defined in MEF 10 Ethernet Services Attributes Phase 1 and the Ethernet Services definitions defined in MEF 6 Metro Ethernet Services Definitions Phase 1. | Test Cases
| Total of 183 Test Cases including
20 Test Cases for EPL (Ethernet Private Line)
105 Test Cases for EVPL (Ethernet Virtual Private Line)
45 Test Cases for E-LAN (Ethernet LAN)
| | Test Plan Excerpt | Test Plan for Traffic Management Phase 1 | Related Tech Spec
| MEF 14 Abstract Test Suite for Traffic Management Phase 1
MEF 10 Ethernet Services Attributes Phase 1
MEF 6 Metro Ethernet Services Definitions Phase 1
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MEF Circuit Emulation Services over EthernetMEF 18 is service-oriented test specification that define a series of Test Cases to verify the ability of a Carrier Ethernet equipment to transport legacy TDM traffic over Ethernet including stringent synchronization tests based on ITU-T G.8261; G.823; G.824. MEF 18 certification testing | MEF 18
| Circuit Emulation Services over Ethernet: Verify that TDM traffic (T1, E1, T3 and E3) transported over Ethernet comply with the requirements defined in MEF 8 Implementation Agreement for the Emulation of PDH Circuits over Metro Ethernet Networks and the Circuit Emulation Services Definitions defined in MEF 3 Circuit Emulation Service Definitions, Framework and Requirements in Metro Ethernet Networks.
| | Test Cases | Total of 334 Test Cases including
129 Test Cases for T1 Circuit Emulation Services over Ethernet
101 Test Cases for E1 Circuit Emulation Services over Ethernet
52 Test Cases for T3 Circuit Emulation Services over Ethernet
52 Test Cases for E3 Circuit Emulation Services over Ethernet
| | Test Plan Excerpt | Test Plan for Circuit Emulation Services over Ethernet
| | Related Tech Spec | MEF 18 Abstract Test Suite for Circuit Emulation Services over Ethernet
MEF 8 Implementation Agreement for the Emulation of PDH Circuits over Metro Ethernet Networks
MEF 3 Circuit Emulation Service Definitions, Framework and Requirements in Metro Ethernet Networks
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MEF Carrier Ethernet Interface: UNI Type 2 MEF 20 defines a set of functionalities for the MEF User to Network Interface (UNI) Type 2. The functionalities include E-LMI based on MEF16, Link OAM based on clause 57 of IEEE 802.3, Service OAM based on ITU-T Y.1731 and IEEE 802.1ag , Protection using Link Aggregation based on clause 43 of IEEE 802.3, Enhanced UNI Attributes and L2CP Handling. MEF 21 is the first certification in a series planned to cover all of the major UNI Type 2 components defined in MEF 20. The next planned certifications are MEF 24 (E-LMI) and MEF 25 (Service OAM). Mef 21 certification testing | MEF 21
| UNI Type 2 - Part 1: Link OAM: Verify that Link Operations, Administration & Maintenance (clause 57 of IEEE 802.3) mechanisms operating at the User Network Interface (UNI) split into the UNI-C (subscriber functions) and the UNI-N (network functions) comply with the Link OAM functions defined in MEF 20 UNI Type 2 Implementation Agreement.
| | Test Cases | Total of 371 Test Cases including
189 Test Cases for UNI-C
182 Test Cases for UNI-N
| | Test Plan Excerpt | Test Plan for UNI Type 2 - Part 1: Link OAM | | Related Tech Spec | MEF 21 Abstract Test Suite for UNI Type 2 – Part 1: Link OAM
MEF 20 UNI Type 2 Implementation Agreement
MEF 11 User Network Interface (UNI) Requirements and Framework
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MEF Certification Documents- MEF Certification tests are based on the Test Plans developped by Iometrix for each certification. The Test Plans together with other useful certification documents are available to MEF members for download from our website. MEF members should contact us at
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to receive the download instructions.
- All the MEF technical specifications are publicly available for download from the MEF website at MEF Technical Specifications.
Testing Process- Test Location: Testing takes place in our lab located in South San Francisco, California or under special circumstances at the vendor premises.
- Test Scheduling: Testing should be scheduled at least one month in advance and Iometrix does its utmost to accommodate vendor schedules.
- Test Duration: is variable but generally do not exceed one week. If some issues occur during the initial test run, vendors can reschedule additional testing at no extra costs until full certification is achieved.
- Onsite Support: Vendors need to provide on-site engineering support during the testing period to configure their equipment, review results during the course of the testing process and take corrective action if required.
- Test Equipment: Iometrix supplies all test equipment, software, scripts and related technical support.
- Test Procedure: Iometrix test engineers perform all tests and test procedures adhere strictly to the Test Plans as approved by the MEF.
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Certification 
