MEF Carrier Ethernet:     https://en.wikipedia.org/wiki/Carrier_Ethernet#Ethernet_Private_Line

• Ethernet Virtual Private Line or E-Line: a service connecting two customer Ethernet ports over a WAN.
• Ethernet Virtual Private LAN or E-LAN: a multipoint service connecting a set of customer endpoints, giving the appearance to the customer of a bridged Ethernet network connecting the sites.
• Ethernet Virtual Private Tree or E-Tree: a multipoint service connecting one or more roots and a set of leaves, but preventing inter-leaf communication.

RFC 2544 Throughput and Latency test for EX4300 by using Spirent

...