|The Node_ID is assigned within the scope of
When IPv4 addresses are in use, the value of this object
can be derived from the LSR's IPv4 loopback address.
When IPv6 addresses are in use, the value of this object
can be a 32-bit value unique within the scope of
Note that, when IP reachability is not needed, the 32-bit
Node_ID is not required to have any association
with the IPv4 address space. The value of 0 indicates
an invalid Node_ID.