So now I have a follow up question (that's pretty convoluted...apologies in advance) and was wondering if anyone here would have any thoughts for me again.
Long story short, a while ago I moved in with some new roommates who already had a latest gen AirPort Extreme as their wireless router. (That's the device I just set up all my DHCP reservations on). However, I already owned, from my previous apartment, my own latest gen Airport Time Capsule. When I moved in I set that up to just "join the wireless network" that the house already had (i.e. my roommate's AirPort Extreme) in order to not mess with the existing setup too much, and since then I've been backing up my Macs to my Time Capsule no problem while keeping everything on the same wireless network. When I did that, in Airport Utility, the Time Capsule (as well as a few Airport Expresses that we have) all showed up as being downstream from the AirPort Extreme, so to speak.
However a few weeks ago I unplugged the Time Capsule when I was moving stuff around and it's been turned off ever since. Lately though I've been wanting to use it again to back up my Macs, but now that I've set up all those DHCP reservations, I'm not sure if doing that would mess things up too much. I used to notice in Airport Utility that random household devices were connecting to the Time Capsule instead of the AirPort Extreme, so does that mean that I'd need to create those same reservations on the Time Capsule as well, or am I all set now that I've added them to the AirPort Extreme (the master router?) Alternatively, is there any way to just use the Time Capsule as sort of a wireless hard drive for my Macs and keep any other device from connecting to it just to maybe save myself some time and potential confusion?
Also, since unplugging the Time Capsule, I swear that AirPlaying to my Airport Expresses has been way smoother - before I used to get skips and cutouts all the time - so now I'm wondering if having the two routers in the house was somehow just too much. But if there's any way I could just keep backing up to my Time Capsule I'd love to just use the existing equipment that's I have. Can I plug my Mac into the TC via Ethernet and back up that way while still remaining on the AirPort Extreme's wifi network?
Ugh, idk! Told ya this was a convoluted issue!
Sorry for the wall of text, haha, but if anyone has any ideas or advice I'd be oh so very grateful!!