What is Unicast Device Discovery?
With Unicast Device Discoveries it is possible to discover GigE Vision™ devices that reside in a different subnet than the host.
During the standard device discovery process the host sends a broadcast discovery packet into each subnet that the host itself is directly connected to via it's network interfaces. All GigE Vision™ devices receiving this discovery packet will send an acknowledge packet (DISCOVERY_ACK) back to the host.
In most cases this is sufficient to discover every GigE Vision™ devices as they are connected to host either directly or via switch to the host. Sometimes however the host does not reside within the same subnet as the GigE Vision™ device which makes it impossible to discover it via a broadcast packet as switches or routers typically don't forward these packets into other subnets.
In order to allow using devices residing in different subnets as well, so called "Unicast Discovery Packets" can be sent to a GigE Vision™ device in addition to the usual broadcast discovery packets. In order to do this the IPv4 address of the device to discover must be known upfront.
How it works
Please have a look at the "Set Up Device Discoveries In Different Subnets" chapter of the IPConfigure manual for a detailed description.
