What is it? Zero Configuration
Networking, also known as ZeroConf, is networking that needs
nothing to be pre-configured and no administration to operate. Zero
Configuration Networking uses industry standard IP protocols to
allow devices to automatically find each other without the need to
enter IP addresses or configure DNS servers.
Why is it Important? ZeroConf enables
services on a network built with this support to be automatically
discovered, thereby requiring no knowledge on the part of the end
user attempting to use this service about the specifics of its
configuration, just that it is available for use if selected.
Using ZeroConfig for installation rollouts or for site
maintenance can significantly reduce administration overhead.
Because the client ODBC Driver is bound to a service name only,
should the details of that service change the client will
automatically re-acquire the new details (this does not include
changes to the name of the service). For example, 200 client
installations configured to use the service "SalesDB1", moving the
"Sales" database to another server, perhaps even a different
database does not required any further client configuration, they
will automatically connect to the new server.
ZeroConf configuration on the server is kept to a minimum. The
host and port number of the Request Broker are automatically
supplied to the ZeroConf service descriptions on the server when
they are broadcast over the network. Furthermore, ZeroConf service
descriptions can be based directly on a Server Type that maps to a
Database Agent. If we consider the above example again, moving the
"Sales" database to another machine will not need any ZeroConf
adjustment on the server either, the new host and port and
automatically discovered and broadcast with no administrator
intervention other than to start the new Broker and Database.