Modems

I just bought a SB8200 and I have it connected to COX and I see all solid green lights, but how come the downstream and upstream do not turn blue which means I have a DOCSIS 3.1 connection. I have called COX and told me that the signal being sent to me is Docsis 3.1 and that the problem is the modem. I tried to log in to the modem but no luck either, won’t let me login at all. Any help on this is appreciated. Thanks.

The browser-gui for my S33v2 modem recommends using the SURFboard Central app.  When I download the app on my android and create and account, login, the application doesn’t tell me anything other than the model number, serial number, mac address, service provider, hardware spec, and ethernet ports. All of which I already know and have on the outside of the machine.  Even worse, it doesn’t give me any information that the browser gives me like  status, configuration, even logs, etc.  This is the only information I get;So far the app is worthless.  Am I doing something wrong; is there a link I don't know about?  What should I be expecting?

Can I switch from 2.4 to5 g network on an arris an g10

Two routers...Router A (Arris TG3452A) ISP internet 192.168.0.1 No endpoints (other than Router B) connectedRouter B (tp-link Archer AX11000) Internal router 192.168.1.1 All internal endpoints connectedRouter B gets IP address from Router A Router B uses Router A as gatewayOther than Router A providing a static IP to Router B and Router B using Router A as the gateway, I can't see any way to add any further configuration to Router A that would allow for a NAT forwarder to work for Router B.  Would like to be able to add a port forward on Router A for an endpoint on Router B ,but Router A states IP address is invalid (because it's not in the same subnet).Can this be accomplished? If so, how?Thanks in advance.

Hi. I’m being pulled around by Xfinity support telling me I cannot receive higher upload speeds since my S34 is actually S34v1 that has not been certified by Xfinity. I can find nothing relating to S34v1 versus S34. Xfinity will not provide me any documentation of their claim. Is Xfinity telling me the truth?

my modem stopped working and i need a warranty claim. Its less that a year old 

Using Cox cable, SB8200 modem works at 600mbps+ then slows to 20mbps.  Rebooting the modem and checking the speed results in 600+mbps for less than a minute until it slows again.

I have a SB8200v3 successfully connected to Xfinity/Comcast. All is working and good.I saw that there is a SURFboard Central app for connecting to the SB8200v3.Bluetooth is enabled and works, and I am close by the SB8200v3 device.I enter my email address, receive the code, and validate the code. However, the SURFboard Central app displays a “spinning circle” indicating to wait and never completes. I have waited 20 minutes to see if anything would happen.Is this happening because my device is already set up and working with Xfinity?If so, what would be the purpose of having the SURFboard Central app installed on my phone?What does this app let you do?

I am trying to set up an Arris S33 with Liveoak fiber internet service and the unit never stops blinking green. tried resetting it twice and it only goes back to flashing green. doesn’t go into pair mode or set up mode.

Multiple Level 1 Technicians have promised a callback from Melvin, Supervisor for Arris Technical Support Tier 2 Team, for several days on end. No callback has been received. Arris has been shipped back an S33 modem with power cord for a full refund per that agreed upon, but no meaningful response has been received from Arris. The Arris case number is 2412-06033.

Does Surfboard work with Verizon?

I got a new S33 modem because my old one the SB6190 seems to be failing because the internet speeds are all over the place. My router is the Orbi AX4200 or RBR750. The highest speed I was able to attain on the old modem was 750mbps but it’s usually around 500mbps. Optimum service is 1gbps.The S33 is activated with my ISP Optimum but it won’t handshake with my router AX4200. The light on the front of the modem is blue.What am I missing?Your help is appreciated.

Can’t connect my device on the app

Activate my device registration online

I am a previous owner of an SB6183 and an SB6190, I have had no issues with accessing the web portal manager with these two modems. I am on the same router (TP-Link Deco S4) I used with my SB6183 and SB6190.  The difference at my end is: 1, I upgraded my Spectrum package from 400mbps to 1gig. 2. I purchased the SB8200 modem for the DOCSIS 3.1. Is it something at my end that prevents me from using the web portal access (192.168.100.1)?  Or is this a known issue that Arris is working on a fix? 

https://1drv.ms/b/c/e9ed3dab60ad9a96/EVWUd4IjOJVOqYfwressD3YBPvYlXWRWvNyoJ6S961PWpw We are experiencing daily connectivity issues. I have attached a current event log for reference. 

Set up S33v3 per the instructions.  Called internet provider and gave MAC ID.  Light on surfboard was orange, then blinked green, then blinked green and blue.  Cannot get solid green light.  Have repowered and reset several times.  Can never get past blinking green and blue.

My Arris 34 is missing the OFDMA channel. I did have it, but then it disappeared.  Log from my Firewalla router. See attached 10/15 upload speed good at 346mbps. That’s what is supposed to happen. On the other days you can see the upload speed hits a ceiling <85 mbps. Software/Firmware from Xfinity is the latest. Xfinity tech came out and put his field test modem on my line and indeed showed 2200 down and 400 up, but this S34 modem isn’t buying it.  What can I do here?   

The Arris web site won’t recognize my serial Number.  

I forgot I had purchased this to upgrade my SB6190 until I had some connection issues and upgraded to 1m service for less.In starting up my SB8200 I had to go back and forth between the Ethernet ports for RJ-45 network cable connections to connect to the SB8200 Web Manager.  But I did so without using a username & password, why?Comcast (Xfinity) did maintenance and lost service for over a week.  I was able to a get connection, but it isn’t complete yet, get blue on downstream, but not upstream.They updated my software, I still need to go back and forth between the Ethernet ports for RJ-45 network cable connections to connect to the SB8200 Web Manager.  It still doesn’t need come up with the login page needing a username & password, why?I lose connection to it going from page to page and have to do it all over again to connect.  Also, if flashes a bottom part of the Configuration Page which I believe is where you can set a password but ends up only

I have Xfinity.   They give my Fortinet 61F a IPv6 /60 block.   All the prefix delegated address are on the Fortinet.   I can’t send out IPv6 traffic.  I get these errors on the modem.  10/14/2025 09:44:07    Critical    No Ranging Response received - T3 time-out;CM-MAC=(Edited private information);CMTS-MAC=(Edited private information);CM-QOS=1.1;CM-VER=3.1;10/14/2025 09:18:02    Warning    TCS Partial Service;CM-MAC=(Edited private information);CMTS-MAC=(Edited private information);CM-QOS=1.1;CM-VER=3.1;10/14/2025 09:18:02    Critical    Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=(Edited private information);CMTS-MAC=(Edited private information);CM-QOS=1.1;CM-VER=3.1;10/14/2025 09:17:34    Warning    RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=(Edited private information);CMTS-MAC=(Edited private information);CM-QO

We activated modem with ISP. Are able to see the home network but error indicating no internet available  

I bought an S34 but it doesn't have a port for my home phone service. What can I do? 

I would like to return order number 61260. Please provide me with return instructions.Robert Woodhouse

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