1. The internet modem is Apris Surfboard SB6141 DOCSIS 3.0 Cable Modem
2. The Airport Express and Extreme are both the latest models.
This is not a happy setup.. just to tell you.
If everything is working then we will ignore that.
5. The Sony amp also does have built-in Control4 to give me automation at my theater. Not sure if the Control4 is causing any problem ornot.
I am a bit old and out of the latest gadgets.. I have never seen an Amp with a Switch in it.. what I am afraid of it has DHCP running.
Please plug a laptop into the Sony with ethernet.. no connection to the rest of the network.. does the laptop get an IP address?? If so the sony has DHCP turned on.. and you must turn it off.
I will study the amp manual and see how complex the new toys are.
Can you please setup the AMP with a fixed IP..
eg 10.0.1.100 (assuming the Extreme is set to default IP)
Set the DNS to 8.8.8.8
Set the gateway to 10.0.1.1
No proxy.
and turn off the port activation except for the single port that will be the connection to the Express.
Network Settings
You can adjust the settings for the network.
Internet Settings
Lets you check or change the network settings. You can change the settings for the following items either manually or automatically.
– IP Address
– DNS
– Proxy Server
Connect the receiver to the network beforehand. For details, see “5: Connecting to the network” (page 44).
LAN Port Activation
Lets you set whether or not to activate each LAN port on the rear panel.
Among the four LAN ports on the rear panel, check the ports that you want to activate. The receiver will use the activated ports to access a network.
By disabling unused ports, you can save power consumption. The ports not connected to a router or a hub will be grayed out.