This object allows the operator or service provider to assign a unique MPLS-TP Node Identifier. The Node Identifier is assigned within the scope of the Global Identifier or Operator Identifier. The value 0 (or 0.0.0.0 in dotted decimal notation) is reserved and MUST NOT be used. When IPv4 addresses are in use, the value of this object can be derived from the LSR's /32 IPv4 loopback address. Note that, when IP reachability is not needed, the 32-bit Node Identifier is not required to have any association with the IPv4 address space. Note: The value of this object has to be explicitly configured by the user in both cases.A Node Id with 0 is the default value and is not a valid configuration for a operationally active node.