Virtual Private LAN Service264FD 100/320Gbps NT and FX NT IHub Services Guide3HH-11985-AAAA-TQZZA Issue: 135.16.2.20 control-wordTable 144 control-word command5.16.2.21 hash-labelTable 145 hash-label commandItem DescriptionSyntax egressContext configure>service>vpls>mesh-sdpconfigure>service>vpls>spoke-sdpconfigure>service>pw-templateDescription This command enables the use of the control word on pseudowire packets in VPLS andenables 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, areencapsulated with the control word when sent over the pseudowire.The T-LDP control plane behavior is the same as in the implementation of control word for VLLservices. The C bit in the pseudowire FEC sent in the label mapping message is set to a valueof 1 when the control word is enabled. It is set to zero when the control word is disabled. Theconfiguration for the two directions of the Ethernet pseudowire should match. Each node willsignal the C bit value as per the local mesh SDP or spoke-sdp configuration. An ISAM nodereceiving a label mapping message with a C bit different from the local configuration mustwithdraw its own label mapping message if one was sent. The service will only come up if thesame C bit value is signaled in both directions.The no form of the command reverts the mesh SDP or spoke-sdp to the default behavior ofnot using the control word.Default no control wordItem DescriptionSyntax [no] hash-labelContext configure>service>vpls>mesh-sdpconfigure>service>epipe>spoke-sdp(1 of 2)
