They embody a wide range of features including standards-based OAM, a choice of resiliency protocols including G.8031 and G-8032, support for multiple transport mechanisms like QinQ, VPLS, or HVPLS using
L2VPNs, and offer advanced provisioning capabilities for pre-configuration and auto-configuration, and remote troubleshooting and diagnosis features like RFC 2544-based embedded test heads and loopback options.