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oldgeeze's avatar
oldgeeze
Aspirant
Dec 03, 2018

Connecting to Arris SB8200 modem. Want to have both hardwire and wifi connected.

Hello. I first purchased a CM1000 modem but had problems with it. Then I purchased a Arris SB8200 3.1docsis modem with two ethernet ports because I wanted to use one port to connect to my Nighthawk R8000 router and use the other port to connect ethernet hardwired to my desktop.  Unfortunately, I'm told I have to buy a second IP address to use the second port.  

  My question is:   Can I use the Netgear GS308 to connect to the Arris modem and be able to conncect my wifi router and  ethernet hardwired desktop to the GS308 and have both work seperately off of the one port on the modem???   I want my desktop to be hardwired thru the GS308 to the modem. But I want my other computers to be on wireless.

1 Reply

  • > [...] Can I use the Netgear GS308 to connect to the Arris modem [...]

       No.  If your ISP gives you only one (WAN) IP address, then you can
    connect only one (addressable) device to the modem.  Generally, that's
    why NAT routers exist -- to allow multiple devices share that one (WAN)
    IP address.  A GS308 is a switch, and, as such, it lets you connect
    multiple devices, but it does nothing to get them their own IP adresses.

    > [...] I want my desktop to be hardwired thru the GS308 to the modem.
    > But I want my other computers to be on wireless.

       What you should want is to connect a router to the modem, and then to
    connect all your other devices to the router (by wire or wirelessly).