Hello... I also found this thread helpful so here is some additional information that might help others.
My friend has a large home and property that he wanted covered in WiFi; so here is what I setup.
He has Bell Connection Hub (Sagemcom) but he also had the Bell 2Wire modem in the past.
The Bell Fibe Connection Hub has the default setup; it provides DHCP and nothing was changed.
Port 1: Connected directly to the Bell modem is a MacBook Air (so I can remote access for support)
Port 2: A Trendnet (TEG-S50g) 5-port switch with flow control features; bought this for $30 at TigerDirect.
Port 3: Empty
Port 4: Empty
Behind the Trendnet switch is the following;
Port 1: Ethernet cable connected to a Logitech Alert Powerline network adapter (NA750)
--- This extends the network across the home using the electrical wires; see Homeplug.
--- There are eight (8) Logitech Powerline (NA200) network adapters plugged in around the house
--- Six adapters are connected to Logitech Alert IP security cameras and provide PoE power.
--- One adapter is connected to an Apple Airport Extreme (bridge mode) in the TV room.
--- One adapter is connected to an Apple Airport Express (bridge mode) in the office.
--- Apple TV, Playstation and Samsung TV are connected to the ports on the Extreme.
Port 2: Ethernet cable that runs from the main house to the garage
--- Attached to this cable is another Apple Airport Express (bridge mode)
--- This is extending the WiFi to another area of the property and outdoors
Port 3: Ethernet cable is connected to another Apple Airport Express (bridge mode)
--- This unit is located right beside the Bell Internet modem and providing WiFi
--- Wireless on the Bell modem is disabled to reduce the risk of interference.
Port 4: Empty
Port 5: Empty
He has multiple devices connecting to this network and everything is working properly (after some initial problems related to the Bell modem). He has MacBooks, iPads, iPhones, Apple TVs and security cameras.
Problem Encountered and Resolved (I think?):
Just as others have posted problems that the Bell modem (Sagemcom and 2Wire) would hang and not allow Internet access. Everything looks good; no red lights, no errors but no Internet access until you power cycle (reboot; not reset) the Bell modem. This was happening at random and multiple times each day. Very frustrating.
After extensive troubleshooting; we realized that we are overloading the Bell DSL modem (no kidding eh?)
So I place a network switch (TEG-S50g) which has flow control in between the Bell modem and everything else and the modem hasn't disconnected or hung since. I am not an IT expert but I think this solved our issue. The switch has;
-- Store-and-Forward switching architecture with non-blocking wire-speed
-- IEEE 802.3x Flow Control for full-duplex mode
-- Back pressure Flow Control for half-duplex mode
Good luck building your network and I hope this is helpful.