Last year I filed an SR for an enhancement to add this capability to Allegro. Cadence looked into it and provided custom Skill code to change the net name on floating vias, etch and shapes. I have attached a screen-shot of the interface as well as the code.
The code isn't perfect, but is definitely usable. Shown below are the instructions on how to use it once you have the Skill code loaded. The capability provided by this code has definitely been beneficial and has saved us some time. It will work in both 15.7 and 16.0
The way the program works is you choose the objects you want to assign, then either select the net name from the list or select the check box.
Selection from the list details:
o after selecting the net name, click on the object (or window) to assign that net name to the object
Selection from the check box:
o Check the box "Manually select net on PCB Canvas"
o Click "Assign"
o Click on the element for the net name you want to use
o Click on the object (or window) to assign that net name to the object
Originally posted in cdnusers.org by rb
Cadence has approved the public release of this code with the following disclaimer:
# THIS CODE IS UNSUPPORTED AND HAS HAD MINIMAL TESTING. #
# The following code is provided for Cadence customers #
# to use at their own risk. The code may require modification to #
# satisfy the requirements of any user. The code and any #
# modifications to the code may not be compatible with current or #
# future versions of Cadence products. #
# THE CODE IS PROVIDED "AS IS" AND WITH NO WARRANTIES, INCLUDING #
# WITHOUT LIMITATION ANY EXPRESS WARRANTIES OR IMPLIED WARRANTIES #
# OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE.