About Defining the Network Map
You create a remote node entry in the network map for each remote node that the local node communicates with. Each network map entry contains information about the remote node, such as the remote node name, the operating system type, the communications mode, and the communications path to use when connecting to the remote node. The communications mode and communications path are separately defined information that can be associated with one or more remote nodes.
The remote node definition, the communications mode, and communications path definition are the three components of each network map entry.
Note: The network map is not mandatory if the initialization parameter
called netmap.check is set to n and all remote nodes have TCP/IP
paths that you identify by their IP address or host name.