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SB8200

SB8200

DOCSIS® 3.1 Cable Modem

485 Topics
1,251 Replies

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485 Topics

mikeycurtThe Many

DHCP private address on SB8200

Doesn’t DHCP a private address.

224

1 day ago

KMWNAZThe Many

asked in SB8200

Cannot connect to SB8200 Router has IP address

I have an Airport Extreme which evidently automatically takes the 192.168.100.1 IP address so I am unable to connect to my SB8200. Any suggestions?

425

1 day ago

westwayThe Many

asked in SB8200

New SB8200 all green lights

So, yesterday I purchased a new SB8200 and had Cox activate it. However, while it works all the lights are Green, shouldn’t two of them in the middle be Blue? I’m 80 and not that tech savvy.

302

2 days ago

RobinKnudsonThe Many

asked in SB8200

SB8200 addressable from Xfinity, but "No Internet" from home, need warranty process

SB8200 was in service since August 2024 and under warranty.In December 2024, “No Internet” status from all home computers.All status lights (Power, Receive, Send, Internet) solid green, none flashingComputer directly connected to the modem also reports “No Internet”.Xfinity reports modem is fully addressable from their end (but lights never flash)Approximately 3 hours Xfinity phone support and over a dozen modem/router reboots performedIPCONFIG /RELEASE, IPCONFIG /RENEW performed, PING local network addresses successful, PING internet unsuccessfulNeed process to return modem under warranty

393

5 days ago

Cross BilliardThe Many

asked in SB8200

SB8200 Not Allowing me to connect multiple items via ethernet

Hello, I have a small mesh wifi network comprised of two W12’s (one of which is operating as router connected to the SB8200 via ethernet) and the other which acts a node. My GF just recently got a stay at home job which she got a desktop for and it needs to be connected via ethernet. When I went to connect the ethernet into the other port initially it wouldn't connect to the desktop. So I rebooted the system to which the ethernet worked but the router wouldn't connect. After hours of trouble shooting I found myself here. Any recommendation as to how I can hard wire a device to my modem while still allowing my wifi to work?

171

8 days ago

sarahjfletcherThe Many

asked in SB8200

Parental Controls on SB8200

Hi, I am trying to set up parental controls. I have a SB8200. I downloaded Surfboard Central, but don’t see the option to create users or set up rules to manage their screen time. Thanks for any help!

8 days ago

kmzhang16The Many

asked in SB8200

Arris Surfboard SB8200 Making Constant Ringing Sound

My modem won’t stop making a ringing sound when on. This started around a year after first using the modem.

192

8 days ago

creativmind1977The Many

asked in SB8200

sb8200 second green light just flashes

The first light is solid but the second is just flashing. Did the ethernet to the laptop and still no internet, can't even connect to the modem itself.

161

9 days ago

FrankenWolfThe Many

asked in SB8200

sb8200 - 2nd port is not working

Sb8200 second port not working?

191

12 days ago

jscThe Many

asked in SB8200

GUI web portal doesn't work on SB8200

The manual instructs me to open a browser & enter an IP address to log in to change the name / password for the modem. When I do so, I get an error message saying the site can’t be reached. I’ve tried on 3 different browsers and I get the same error message. I have the SB8300.

623

14 days ago

rmnordlundThe Many

asked in SB8200

SB8200 - how to use the modem with ethernet input from ISP

I have an ethernet cable input from my provider (Reliance Connects). How do I connect it to the SB8200 modem?

192

15 days ago

David HanleyThe Many

asked in SB8200

security code Wi-Fi to connect the device

I had to recently do a complete recovery on one of our laptops. I can't find my security code needed to start my wifi. We bought the Arris in June of this year

111

16 days ago

jken75The Many

asked in SB8200

sb8200 modem reboots randomly several times a day

I have an sb8200, and it reboots randomly several times a day. The cable company says everything looks good on their side. Is this a sign of a bad modem? I checked all the connections and reset the modem to factory settings, but even after doing that, it still reboots, kicking us off all our streaming devices.

711

18 days ago

WVZR-1The Many

asked in SB8200

SB8200 Comcast/Xfinity slow speed internet Issues

**** Excuse the SN8200 in the title ***** Moderator can you fix please? **** I had a T25 VOIP modem but dropped VOIP and the T25 was only functioning at maybe 75% of an advertized connection of 500 generally much less maybe 275 or less. This SB8200 doesn’t seem to perform much better or maybe worse from time to time. These are images from a 3 hour fresh Comcast/Xfinity connection and I have used the ‘reset’ depress on it. Channels 33 and 34 interest me. The channels that aren’t in the image are similar to what’s in those that can be seen. What about the errors on boot that I see?Channel 33 on a fresh boot was 3.7dBmV 40.5dB 123553490 519The table below contains the log of events that the SB8200 has detected. This log can be important to the service provider to help diagnose and correct problems, if any should occur. Time Priority Description 11-29-2024, 15:40:38 Critical(3) Started Unicast Maintenance Ranging - No Response received -

DocRodgThe Many

Arris surfboard sb8200 connected with service provider and double checked - registered modem and still no internet

512

18 days ago

Jim StanleyThe Many

asked in SB8200

Adding a VPN to Arris SB8200

Is it possible to load my VPN to my Arris Modem and route it through a VPN router to cover all devices in my house? If so, are there instructions somewhere to load the VPN to the modem? Are there any special things I need to do in order for this to work? Let me know. ThanksJim

271

23 days ago

Stasha4eThe Many

asked in SB8200

cant get my Arris SB8200 to stay connected

In the app I get the modem to connect to my internet and then when I try to sign into the app to use it it tells me it lost the connection try again. Many try’s help!

333

25 days ago

bizModemThe Many

asked in SB8200

SB8200v3 occasionally crashes - Comcast says that they have no control over firmware

I am aware that there are other firmware related posts but am lost about what to do next.We are Comcast Business internet customers and decided to get our own SB8200v3 modem and WiFi router as the Comcast modem / router combinations didn’t offer the features we needed. The modem however crashes every few weeks, what is a problem when I am not in the office as people struggle to trouble shoot and reboot the modem.I spoke today twice with the Comcast support, both associates claimed that they have no access to my modem, what I however believe is not true.Can somebody direct me to how I can get the firmware checked and updated if possible?I currently have the firmware version ( edited personal information )

756

25 days ago

Tiny_Tim4The Many

asked in SB8200

How to update the user Name on http://192.168.100.1?

I was able to locate how to update my Password, however I would also like to change the user name to something other than simply “admin”. Where is there a link to accomplish a user name update?

612

25 days ago

Leahpia618The Many

asked in SB8200

Can't reach Arris System basic setup page on modem SB8200

My wifi went down, I think its my 6 year old router. I bought a new wifi 7 router but it hasn’t arrived yet. I did the factory reset on my SB8200 modem, and I’m trying to reset my wifi name and password. I’ve never reset the password before (ya, I know you are supposed to for security- I had a friend setup the modem when it was new about 2 years ago). I’m connected to my modem with an ethernet cable, and when I type in 192.168.0.1, I get into an arris page, but it does not have the “system basic set-up” like the youtube help videos show. Here’s what I see: I have an old Dell XPS computer from 2015 with windows 10. How can I access the basic setup page to change my wifi password? Thanks!

1242

27 days ago

Violettemichael17The Many

asked in SB8200

Surfboard SB8200 - Unable to connect with router

Won't connect to router. Will connect to computer but only one. As soon as you move the cable to a different computer the internet is down.

331

29 days ago

Mseibel8The Many

asked in SB8200

sb8200 offline after power outage

My sb8200 has no connection (is offline) after a short power outage last night. I have a separate router and it says that the network cable is unplugged and it is not. I have restarted and manually restarted both the modem and the router, even leaving both unplugged completely overnight. I contacted xfinity and they cannot figure it out either. Does this mean I need a new Ethernet cable? I have also read that maybe I have to factory reset the modem but I am not sure what to do. We have only had this modem router combo for under a year I can’t imagine it is already toast.

331

29 days ago

Dave104The Many

asked in SB8200

Mid/high Split Modem sb8200

Mediacom is my ISP and they are doing an upgrade to their system that will disable all DOCSIS 3.0 modems. They now only list 2 modems as compatible with their service - Netgear CM2500 and CM3000. They seem to be promoting mid/high split technology. I would like to buy a Surfboard SB8200. My questions are: Will the SB8200 work with Mediacom? Does Arris sell any modems that are mid/high split capable?

652

1 month ago

surf963The Many

asked in SB8200

Arris SB8200V3 will not connect to Optimum ISP

Four plus hours today and two yesterday trying to register my Arris SB8200V3 cable modem with Optimum. Optimum tech says it’s the modem. Arris tech says it’s the ISP. After trying two new Arris modems with Optimum I’ve had enough. Bought a Netgear and will see if that works. Pretty soured with Arris. Maybe something simple but if it doesn’t work is doesn’t work. ☹️

1057

1 month ago

monetmccThe Many

asked in SB8200

SB8200 not working & under warranty, how to replace?

SB8200 not working & under warranty, how do I get a replacement.LED lights not coming on at all, even after unplugging and re-replugging. Contacted Internet service provider and they said I needed a new modem..Please let me know how I can obtain a replacement as it is still under two year warranty? thank you- Monet M

492

1 month ago

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