Description
A block design net, or a bd_net object, connects the pins on an IP integrator block design cell to other pins, or to external ports. The bd_net object connects through multiple levels of the design hierarchy, connecting block design cells. Every net has a name which identifies it in the design. All block design cells, pins, and ports connected to these nets are electrically connected.
Related Objects
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X-Ref Target - Figure 2-7 
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The block design net, bd_net object, occurs in a block design, or diagram. It is connected to ports (bd_port), and through pins (bd_pin) to block design cells (bd_cell) in the diagram. You can query the bd_nets of the diagram, bd_cell, bd_pin, and bd_port objects.
get_bd_nets -of_objects [get_bd_ports]
In addition, you can query the bd_cells, or the bd_pins, or bd_port objects that are connected to a specific bd_net:
get_bd_cells -of_objects [get_bd_nets clk_wiz*]
Properties
The properties on the bd_net object include the following:
Property Type Read-only Visible Value
CLASS string true true bd_net
NAME string false true clk_wiz_1_locked
PATH string true true /clk_wiz_1_locked
To report the properties for the bd_net object, you can copy and paste the following command into the Vivado Design Suite Tcl shell or Tcl Console:
report_property -all [lindex [get_bd_nets] 0]