The list of external interfaces which the traffic needs
to be mapped to.
This object is a list of interfaces presented as
an octet string of interface indices or ifindex-es.
The list should contain at least one interface and at most
all the interfaces in the switch up to 16384 interfaces.
The 16384 interfaces max-limit is due to the size of this
object.
Specifying this object is mandatory for the creation of a
row in hpnicfNpvTrafficMapConfigTable.