Canon LBP7210Cdn Manual page 573

If you want to set the printer so that it responds to searches that use the multicast discovery
function
1. Set [Response] to [On].
2. In [Scope Name], enter the scope name to be used when searching for
certain devices from utility software, such as NetSpot Device Installer, by
multicast.
If you want to set the printer so that it does not respond to searches that use the multicast
discovery function
Set [Response] to [Off].
Proceed to Step 7
Click [OK].
if you do not specify the settings for the other options.