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Motivations Current LDP Status TLV mechanism is useful (and viewed as minimal default implementation for interoperability), BUT it loads the control plane. Network may perform better if control plane is free to do other things Notifications will flow faster if not serialized through the control plane Data plane notifications delegates implementation to PW IWF Direct association of BFD PDU with incoming PW or use of discriminator means simpler protocol, simpler implementation Control plane optimizations (e.g. Group ID) have limited applicability Provides inter-domain mechanism There may not always be a control plane, or may be multiple/different control plane protocols |