L2 Services E-LAN E-TREE from MEF vs IETF VPWS

E-LAN	Multipoint-to-Multipoint EVC
	https://wiki.mef.net/display/CESG/E-LAN Multipoint L2 VPNs Transparent LAN services Layer 2 VPNs (L2VPN) Foundation for IPTV and Multicast networks

E-TREE	Rooted-Multipoint EVC ( point-to-multipoint )
	https://wiki.mef.net/display/CESG/E-Tree Multicast delivery services Internet access Mobile backhaul services Telemetry services

E-Line	Point-to-Point EVC
	https://wiki.mef.net/display/CESG/E-Line Private lines Ethernet Internet access Replacement for TDM private lines
VLL or VPWS	Ethernet-based point to point communication over MPLS
	Virtual leased lines (VLL) Virtual private wire service (VPWS)

L2 VPN from IETF