A little background first. A have a friend who has 20 something hd/dvrs. He runs into the issue where random play lists don't show up. What he wants to do is segment his playlists into a few groups so that with different inputs on his TV he can access all play lists through a few different dvrs. These few dvrs would only see like 8 play lists instead of the whole systems list and have random playlists missing. As it is now he has turned off whole home on a few to be able to know which list he will see. From what I've seen on other posts subnet addressing can fix this. Can anyone help me how to set this up? I'm pretty well versed with network equip just never played with subnets. Is this setup on the dvrs or can the router define subnets based on Mac address? Any help getting us started would be great!