'This parameter indicates the type of the executor node. The
node-type is one of the following:
ROUTING III
NONROUTING III
ROUTING IV
NONROUTING IV
AREA
A routing node has full routing capability. A nonrouting node
contains a subset of the Routing modules. The III and
IV indicate the DNA phase of the node. Nonrouting nodes can
deliver and receive packets to and from any node, but cannot
route packets from other nodes through to other nodes. An
area node routes between areas. Refer to the Routing
specification for details.
For adjacent nodes, this is a read-only parameter that
indicates the type of the reachable adjacent node.
NOTE: The ROUTING III and NONROUTING III values are
incremented by one compared to the standard DECnet values in
order to maintain compliance with RFC 1155)'