VPLS
virtual private LAN service
A VPLS is a type of VPN in which a number of sites are connected in a single bridged domain over an IP/MPLS network. The services may be from different locations, but in a VPLS, they appear to be on the same LAN.
When implemented with Layer 2 interfaces, this service is called VPLS. When implemented with Layer 3 interfaces, this service is called an IP-VPN.