Solution (not a workaround) to the issue of not accessing the SB8200 Webinterface

I have been banging my brain out trying to get my Linksys MR20EC router to access the SB8200 modem's webinterface. Every thing I have tried based on available information on the web did not work. And I mean everything.

This method does not require you to touch your primary router, you know, the one that will not allow you to view your modem's webinterface. All this was tested with two older router/AP boxes and it works.

This is specifically for the Arris SB8200 which has two ethernet ports. If you modem only has one, sorry, I can't help you.

Here is a solution that does work. You will need another router, or a wifi extender that can work in AP (access point) mode. The SB8200 has two ethernet ports,you will connect the second router/AP to the open port. Please read this through twice so you have a mental picture of what you are doing.

1. Configure the spare router or wifi extender (in AP mode).IP Address:192.168.100.2 Mask (if asked): 255.255.255.0 Gateway: 192.168.100.2 DHCP: 192.168.100.20(if available) - Gives your PC/Laptop an IP address of 192.168.100.20Reboot this device
2. Connect this device to the SB8200's open ethernet port. (Do not use the router's yellow ethernet port. Just use a regular LAN port).
3. On your PC/Laptop, Configure you wifi adapter (if DHCP is on, you do not need to do this)IP Address: 192.168.100.20Mask: 255.255.255.0Gateway:192.168.100.2
4. When the spare router/extender boots up, connect to it over wifi.
5. In a browser, enter 192.168.100.1 and the SB8200 webinterface should appear. If not, confirm you have set everything correctly,

Now the PROS: it works, and the CONS: you will have to connect via wifi to the device connected to the SB8200, and then connect back to your regular wifi network. This will appear seamless to the other users on your network. It could just be a typing error.

I have used a Linksys RE220 WIFI Extender working in AP mode. It worked just fine.

I have also tested this with a Belkin AC1200 DB Dual Band AC+ Router. All I did for that router was change the IP address to the configuration above in item #1. It remains in router mode and works.

Note: There IS a difference in Router Mode and Access Point (AP) Mode. Router mode can block some data or requests, AP will pass what ever you send it. Older routers seem to work better for this project. The router/AP you will be using will never see the internet so you should ("should" being the operative word) be fine.

I am sure you have a older router sitting around collecting dust like my Belkin.

Good luck!

Now the disclaimer, if you mess this up, it is on you. Do not blame me. This is how I got my stuff to work.