subnet mask

HI, I need help with the Internet interface parameters I received. WAN IP: X.Y.238.68 Subnet Mask: 255.255.255.254 Gateway IP Address: X.Y.238.67 When I fill it into the WAN interface router (Draytek 2860) says: "Warning !! The WAN IP and Gateway IP you set are not in the same IP network." Is...

Hello! Sorry if my question does not make much sense. I am trying to understand what having a larger or smaller network size means (like a network with a subnet mask of 255.255.0.0 vs a network with a subnet mask of 255.255.255.0). Don't networks only have one public IP address? Thanks in...

I have an ASUS RT-AC87U router connected to a Motorola Surfboard modem. That has a Netgear router behind it in access point mode, with my wired network behind that. I had to do a factory reset this morning which was a huge pain in the ass, I wound up having to reset both the access point and...