Draft: draft-ietf-core-resource-directory

Commentary: Use case HA / BA : Expand and reference term " 6LBR " Use case HA / BA : Use term ' IoT ' that 's more common in that area these days
Paragraph (version A):
Home and commercial building automation systems can benefit from the
use of M2M web services.  The discovery requirements of these
applications are demanding.  Home automation usually relies on run-
time discovery to commission the system, whereas in building
automation a combination of professional commissioning and run-time
discovery is used.  Both home and building automation involve peer-
to-peer interactions between endpoints, and involve battery-powered
sleeping devices.  Both can use the common RD infrastructure to
establish device interactions efficiently, but can pick security
policies suitable for their needs.
Paragraph (version B):
Home and commercial building automation systems can benefit from the
use of IoT web services.  The discovery requirements of these
applications are demanding.  Home automation usually relies on run-
time discovery to commission the system, whereas in building
automation a combination of professional commissioning and run-time
discovery is used.  Both home and building automation involve peer-
to-peer interactions between endpoints, and involve battery-powered
sleeping devices.  Both can use the common RD infrastructure to
establish device interactions efficiently, but can pick security
policies suitable for their needs.
Paragraph (version A):
Two phases can be discerned for a network servicing the system: (1)
installation and (2) operation.  During the operational phase, the
network is connected to the Internet with a Border router (6LBR) and
the nodes connected to the network can use the Internet services that
are provided by the Internet Provider or the network administrator.
During the installation phase, the network is completely stand-alone,
no 6LBR is connected, and the network only supports the IP
communication between the connected nodes.  The installation phase is
usually followed by the operational phase.  As an RD's operations
work without hard dependencies on names or addresses, it can be used
for discovery across both phases.
Paragraph (version B):
Two phases can be discerned for a network servicing the system: (1)
installation and (2) operation.  During the operational phase, the
network is connected to the Internet with a Border Router (e.g. a
6LoWPAN Border Router (6LBR), see RFC6775) and the nodes connected to
the network can use the Internet services that are provided by the
Internet Provider or the network administrator.  During the
installation phase, the network is completely stand-alone, no Border
Router is connected, and the network only supports the IP
communication between the connected nodes.  The installation phase is
usually followed by the operational phase.  As an RD's operations
work without hard dependencies on names or addresses, it can be used
for discovery across both phases.
Paragraph (version A):
When answering a multicast request directed at a link-local address,
the RD may want to respond from a routable address; this makes it
easier for registrants to use one of their own routable addresses for
registration.
Paragraph (version B):
When answering a multicast request directed at a link-local group,
the RD may want to respond from a routable address; this makes it
easier for registrants to use one of their own routable addresses for
registration.