To understand mu question, it's important to know my setup, worked to make it easy to understand and read. I've searched for days to no avail, so thanks in advance for any help. BTW, I've been in telecommunications for years, a bit ironic. Setup Main Router: 2013 6th Gen Airport Extreme Base Station Network Mode: Create Wireless Network Networks: 2.4GHz (Channel 6), 5GHz (Channel 161) Router Mode: DHCP and NAT Port Settings: TCP/UDP Ports for server IPv6: Enabled, Automatically, Tunnel Second Router: 2011 5th Gen Airport Extreme Base Station Network Mode: Extend a wireless network Wireless Network Name: Both 2.4GHz and 5GHz bands extended Router Mode: Off (Bridge Mode) IPv6 Incoming Connections are not blocked *All firmware updated, using Airport Utility 6.3 w/o any issues as some report Summary The 2nd Base Station extends 2.4 and 5GHz networks. Normally w/ a one router WLAN I'd set DHCP reservations (keeps wireless devices from fighting over WLAN IP's). My current setup, wireless devices should connect to the router based on the best signal. The Mac's closest to the main router are getting transmits rates 300+ (surprising for N on an ac router). My Mac Pro5,1, near the second router upstairs is connected to the 5GHz band and gets low 200's intermittently, yet better than 2.4GHz. I'm thinking DHCP Reservations on a setup like this would be counter-intuitive as it would force wireless devices to one router instead of the device connecting to the router with the best signal. Thoughts? I would be in your debt!