D-Link DGS-6600-48TS Configuration Guide - Page 374

Volume 5-Multiprotocol Label Switching / Chapter 35-Virtual Private Lan Services (VPLS) CE3 PE2 Emulated LAN CE1 PE1 MPLS Network CE2 Chapter Overview PE3 CE4 Figure 35-1 VPLS Deployment CE3 AC PE2 Emulated LAN CE1 AC PE1 PW MPLS Tunnel MPLS PW Tunnel CE2 AC MPLS Network MPLS Tunnel PW PE3 CE4 AC Figure 35-2 VPLS Reference Model - shows a VPLS reference model where the PEs that are VPLS-capable provide a logical interconnect such that the CEs belonging to a VPLS appear to be on a single emulated bridged Ethernet LAN. Attachment Circuit (AC) In a VPLS, a CE device attaches through an Attachment Circuit (AC) to a PE. The AC carries the Ethernet frames from the CE to the PE or from the PE to the CE. The AC can be an Ethernet port or an Ethernet VLAN port which is associated with an Ethernet port and a specified VLAN. Pseudowire (PW) A PE connects through a full mesh of Pseudowires (PWs) to other PEs in the VPLS. A PW carry MPLS packets which encapsulate Ethernet frame belonging to a VPLS through MPLS network from a PE to another PE. The encapsulation mode of PW can be Ethernet raw mode and Ethernet tagged mode. All PWs in a VPLS should have same encapsulation mode. DGS-6600 Configuration Guide 374