This attribute specifies the fully qualified control point (FQCP)
name of the adjacent node. This attribute is ignored if the adjacent
node is not an APPN node.
If this attribute is not empty it is checked against the name received
from the adjacent node during the XID exchange, unless
adjacentCpType is set to backLevelLenNode (in which case it is
used to identify the adjacent node).
The first portion of this name, up to the period, is the network
identifier for the network to which the adjacent node belongs. An
APPN network is a portion of a virtual private network which has a
separately administered name space. This network identifier is the
implicit qualifier of all resources which do not have an explicit
network identifier.