The Comcast service comes into a Motorola cable modem (SB6121). Plugged into\nthe modem's Ethernet port was an Airport Extreme base station.\n\nThis provided wifi service to this small office building for more than a\nyear.\n\nNow there is a need for adding to that some Ethernet capability. (Yes, the\nAirport has Ethernet ports, but it is located high up where plugging in\nEthernet cables is impractical.) So...\n\nI added a Netgear RP614v2 router, plugged it into the modem, and plugged the\nAirport into the Netgear router.\n\nDoing this killed the wifi. The Ethernet ports on the Netgear router now\nwork, but no wifi. (Tried different ports on the Netgear, different cables;\nNo joy. It's not the fault of the hardware.)\n\nI've spent many hours trying to configure the router and the Airport so as to\nbring back wifi. I presume I'm not making the right choices.\n\nCan someone point out the basic important points re. IP addresses? For\nexample, the Airport configuration page says that my choices are: 1. share\nthe WAN fixed IP address; 2. distribute IP addresses via DHCP; 3. nothing\n(bridge mode). Do I want the Airport to not distribute IP addresses (bridge\nmode) because the router will do that? And do I need to configure the modem's\nWAN IP address to match the modem's IP? Or does this happen automatically?\n\nA good reference to read about router configuration in general (IP addresses,\nDHCP, etc.) would be a great starting point. Suggestions?\n\nIf there's a more-appropriate group in which to ask this, just say so.\n\nThanks.