When changing the "Show" drop down from Nodes to Interfaces I would expect that the "Group by" drop down would show Custom Interface Properties but I am not seeing them. Is this expected or am i missing something? I of course can see them if I add the columns by selecting the arrows ">>" to the table but i am looking to be able to group by the custom Interface property.
what version are you on? In V 10 this works as you described, you select interfaces, then on the group by I have all my custom fields to choose from..i my case i can see Region and counts of interfaces in that group.
No the only difference may be that you have no assigned the custom properties to all of your nodes??