The control-word command enables the use of the control word individually on each mesh SDP or spoke-SDP. By default, the control word is disabled. When the control word is enabled, all VPLS packets, including the BPDU frames, are encapsulated with the control word. The Targeted LDP (T-LDP) control plane behavior is the same as the control word for VLL services. The configuration for the two directions of the Ethernet pseudowire should match.