Not Receiving DOCSIS 3.1

Hello Colleen, the Modem has LED indicators showing the current status. There is a LED that signifies either DOCSIS 3.0 or 3.1. When the LED is green, the current connection is 3.0, and when the LED is Blue, the current connection is 3.1. 

User Guide explaining LED status.

Although my user ID and "credentials" are not able to be found, I am associated with a user who has no idea what I want to achieve haha. I can provide those details for you if need be. 

Per the instructions of the SB8200 user guide, typing in 192.168.100.1 does not take me to any status screen. I believe this was due to activating the modem with Cox. 

Basically, my equipment is not being used to it's fullest potential, when it absolutely should be.

The SB8200 User Guide listing steps for accessing status screen

Error reaching status screen.

caseypuryear 

Thanks for clarifying. I'm not sure why you are unable to access the web manager. I'm not aware that we are blocking this access, but to be honest, our support for retail equipment is limited. I'm happy to check things from our end., but we would never ask you to share any account information publicly. Please email cox.help@cox.com with your full name, complete street address, details of your concern and a link to this thread. please also include results of a speed test from www.speedtest.net.

I sent an email.

caseypuryear  Thanks! 

Some routers like to completely flake out when you try to access a private IP address such as 192.168.100.1 when the device resides on a public interface.  I suspect that's why you can't access the modem's status page.

Perhaps it's possible to establish a static route which directs traffic destined for 192.168.100.1 to your router's WAN interface.

As for the DOCSIS status indicators, it wasn't clear to me which channels on your modem status lights where blue vs. green.  Keep in mind, not all areas have DOCSIS 3.1 on the upstream channels so you may see blue downstream but green upstream.

Hi caseypuryear,

Upon reviewing your screen shots, it appears all of the channels are connecting as they should.  I see that you mentioned you are not getting Docsis 3.1 but it appears you are.  Please describe what you mean in more detail if you would.

Cox Support Forum Moderator 

Yes, so I believe it is a Modem issue, and the manufacturer has stated that it is transmitting DOCSIS 3.1, however, the LEDs on the front of the modem are not reflecting that. 

Just wondering, based off those numbers, that I could verify what the manufacturer is telling me.

Hi, there. I've looked at your SB8200 from here. Your modem has all 32 downstream channels and all 4 upstream channels bonded and is using D3.1. I hope this helps. 

I looked over your screenshots, and your modem is connected using D3.1. Not sure why the lights are indicating otherwise, but it could indicate a hardware failure on the modem itself. 

If you look, OFDM PLC shows locked. - In DOCSIS 3.1, OFDM (Orthogonal Frequency Division Multiplexing) utilizes a Physical Layer Link Channel (PLC) to transmit critical physical layer parameters to the cable modems. This is the indication that you are utilizing D3.1.

Additionally, you will see OFDMA - Orthogonal Frequency Division Multiple Access, also an indication of being in D3.1 mode. Hope that helps.