NAT problems / sudden packet loss

Signal strength is my main concern, just curious as to which is better for that. I'll have to figure it out by testing around the house. I am port forwarding through my modem, and it is asking for a "local ip adr" and I'm confused as to what exactly that
is. I've tried to follow the port forward guide and website that xbox.com promotes, but they did not have my modem model, nor did they have my router model. So now I am kind of stumped. There is a lot of talk about static ip addresses and manually entering
ip addresses on the console. I'm just confused on what I should enter as "local ip adr" and if any further action is needed on my Xbox One and 360.

I understand. I'm just wondering if I should even bother with my router now. I have figured out the password for my modem's wifi signal, which my greedy ISP would not give me without charging me a monthly fee. So, I'm wondering if I should just portforward
on my modem. What do you think?

I hate wireless.....run a cable ...... will need to give the x1 a static ip and forward a few ports if you router dosent have the upnp thingy ...... lots of nat info here....

forums.xbox.com/.../1625236.aspx

My NAT is currently open after checking the UPnP box . I had UPnP checked on my router, but I guess I missed it when logging in to my modem. If I have any more trouble, I will return to this forum. Thank you for the help, GZA!

The first thing I would suggest is making sure UPnP is enabled on the Cisco. See pp. 50-51 of the manual here:

www.cisco.com/.../4028630.pdf

If UPnP is enabled and if it is a good working implementation of UPnP (a big if), you should not need to forward ports manually to get open NAT (test on the Xbox again). Otherwise, when forwarding ports manually, the local IP address is the IP address of
the device (e.g. your Xbox) to which you want to forward the port. You can find the current IP address in the Xbox network settings. Because that DHCP IP address can change over time, you really need to assign a static IP to the Xbox and forward to that.
However, some have experienced problems setting the Xbox One to a static IP...