A generic VPLS solution for E-Tree services is proposed which uses
VLANs to indicate root/leaf traffic. A VPLS Provider Edge (PE) model
is illustrated as an example for the solution. In the solution, E-
Tree VPLS PEs are interconnected by PWs which carry the VLAN
indicating the E-Tree attribute, the MAC address based Ethernet
forwarding engine and the PW work in the same way as before. A
signaling mechanism for E-Tree capability and VLAN mapping
negotiation is further described.