Ethernet is well known for its ease of use and cost effectiveness and is rapidly gaining acceptance in Carrier networks. While traditional SONET/SDH based technology in carrier networks is replaced by Ethernet, suitable services OAM support (ITU-Y 1731 and IEEE 802.1ag) is need to be supported in the network. Also, in the core of the network, MPLS being the predominant technology is being positioned as the basis for Provider Backbone Transport (PBT) technology, in addition to IEEE standards relating to Provider Bridges and Provider Backbone Bridges. ATTEST test solutions cover the full breadth of Carrier Ethernet network technologies:
Veryx ATTEST-CTS MEF 21 Link OAM UNI-N and UNI-C automated test suites automated test suite provides Equipment Manufacturers and Service Providers an easy and efficient solution for verification of Link OAM mechanisms in accordance to Metro Ethernet Forum (MEF) requirements for voice, video and data services in Carrier Ethernet networks.
ATTEST enables significant speeding up of testing cycles and reduces the "time-to-market".

ATTEST-CTS MEF 21 Conformance Test Solution is designed for conformance testing of the Link OAM features in Carrier Ethernet devices as defined in MEF 21 Abstract Test Suite.
The ATTEST-CTS MEF 21 comprises of Link OAM UNI-N and UNI-C test suites for verification of UNI-N and a UNI-C implementations respectively. ATTEST-CTS MEF 21 relies on ATTEST -- a powerful test framework that requires minimal time for set-up and enables efficient use of time and resources.
Event notification
Request/Response Processing
Functional specification
Local/Remote information
Organization specific information
Link events
OAM variable descriptor/ container structure
OAM additional conformance tests| Product | Part Number |
| ATTEST-CTS MEF 21 UNI-Customer Edge Conformance test suite | CTS-MEF-UNIC-B |
| ATTEST-CTS MEF 21 UNI-Network Conformance test suite | CTS-MEF-UNIN-B |