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SB8200

SB8200

DOCSIS® 3.1 Cable Modem

469 Topics
1,210 Replies

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469 Topics

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G_TThe Many

asked in SB8200

At 9pm last night, my Arris SB8200 stopped working, Xfinity ran diagnostic and told us to get a new modem

Last night our modem suddenly stopped working. The modem has sat near the coax cable at a computer desk. We haven’t moved it in almost a year. I spent 2 hours on the phone with our provider troubleshooting and running diagnostics. Xfinity told me that we’ll need to buy a new modem. This is frustrating because I bought the Arris SB8200 around this time last year and had an xfinity technician come out and confirm the configuration. I assumed these modems should las for more than a year. What are we supposed to do if the provider is telling us the modem is broken? I made the investment in the Arris modem so that I wouldn’t waste money renting one from our service provider. Now we’re worried that we don’t have a choice and don’t want to waste more money purchasing another modem. What do you suggest we do?

Self-assigned question

I am a tad green with this topic. What is the fix to the message on my MacBook Pro when I try to connect via an ethernet cable that says, “Display Ethernet has a self-assigned IP address and will not be able to connect to the Internet.” I am able to connect all my devices (2 computers, 2 iPads, 2 iPhones, to the wifi Eero Pro which is connect to the Arris sb8200, yet I am not able to connect via ethernet cable. any help would be greatly appreciated. TY

561

1 year ago

ciferkeyThe Many

asked in SB8200

Low Upload speed on Xfinity with SB8200

Hello, I have an SB8200 and I’m on the xfinity “Performance Pro Internet Plan” (Download speeds: up to 400 Mbps / Upload speeds: up to 100 Mbps). Google Wifi puck connects to the modem. Linksys se3008v2 switch connects to the puck. All other devices are either wired to the switch or connect to the puck by wifi. I’ve only been able to pull ~10Mbps down on my connection. Tested this through: - The Google Wifi puck’s built in speed testing. - Internet speed test on a desktop hardwired to the switch - An Open Speedtest running on a hardwired NAS hit from my phone while wireless is turned off. Had several troubleshooting calls with comcast. They tried all the standard restarts and re-provisioning. Sent out a technician who hooked their diagnostic device directly into the modem line. They were able to pull a normal upload speed. Does this suggests the problem is on the modem side considering - the line itself looks good - the very first device connected to the modem (the wifi puck) has a low

11333

1 year ago

thatmillerkidThe Many

asked in SB8200

Major signal loss after going through my SB8200

I have had to call my ISP several times about not getting the speeds I am paying for. We pay for 1200 mb/s. We tested the signals and the speed is coming in about 1980 mb/s through the cable but then drops to the low 800s after going through my sb8200 modem before it even hits my router. I tried turning on LAG but didn’t seem to change anything. Modem Info Below:Standard Specification Compliant Docsis 3.1 Hardware Version 6 Software Version AB01.02.053.05_051921_193.0A.NSH

1275

1 year ago

daberg7481The Many

asked in SB8200

sb8200 v cm8200 on Comcast internet

I have Comcast xfinity internet service. I want to upgrade my sb6190 modem to the sb8200 but it is only available in white. Is the cm8200 (which is available in black) compatible and interchangeable with the sb8200. I’ve read some Amazon reviews who said they simply identify their cm8200 as an sb8200 when registering the modem and they have no issues. Will it work and are there any downsides to choosing the cm8200 for use on Comcast/xfinity?

12361

1 year ago

kierobiThe Many

asked in SB8200

SB8200 connecting with TP-Link S4

Bought a Surfboard SB8200 on Prime Day to replace the Motorola Modem we were previously using and received it Saturday morning. ISP is supplying higher speed internet and Motorola unit wasn’t capable of achieving. Connected SB8200 to TP-Link S4 that we had connected to the Motorola unit before (and working) and while I can connect to the Wi-Fi network, I get the error message no internet. Connect to the SB8200 through an Ethernet cable to my laptop ThinkPad hub and I get internet no problems. Talked to Tech Support last night and they told me I can’t have two Ethernet connections at the same time with the SB8200 unless I get the second port activated by ISP. A little odd considering we had two Ethernet connections with the Motorola unit and no problems. Has anyone had any success with connecting SB8200 with TP-Link S4 mesh system and getting Wi-Fi to work. Not particularly tech savvy so would need a dumbed down version of how to to get me through it. Tech Support weren’t really helpful

nheagle271The Many

Can I reboot my sb8200 router remotely using the app?

4601

1 year ago

SevenupsThe Many

asked in SB8200

Public IP address SB8200

I have contact my ISP as I am looking to port forward on my router, after a fair bit of research it turns out I have a private IP address and this needs to be changed to public. When I first contacted my ISP (Optimum) they said it would be no issue to do this, until they discovered I have my own modem and router. They then explained to me that in order to change my IP from private to public I had to contact my modem’s manufacture. I cannot see any way to make changes to my ISP, and if my suspicions are right, I am not able to through my modem and it has to be done through my ISP. Any help or advice on this would be much appreciated.Sevenups

2822

1 year ago

rickkpThe Many

asked in SB8200

Surfboard SB8200 Web page access issue

First, yes, I did scan the questions and I did see a similar one answered, but I have questions from that.Previously I had the SB6190 and just upgraded to the SB8200 to get the DOCIS 3.1 plus the GB ethernet ports.Linksys Atlas Pro 6 Mesh Router worked fine with the SB6190 and I could easily access the modem page if needed without using a “direct” connection. In other words I could from my wired computer access the 192.168.100.1 page address in the browser on the computer.Now I can’t.Same router, same computer, same browser with new SB58200. Just won’t connect. I changed nothing on the router settings, so it really makes no sense the router is involved in blocking the access.Note well: I am not wanting to change anything. But occasionally I look at the logs just to see if there is anything “off”.I am NOT trying to access via WiFi, or wirelessly.Short of moving my computer to the proximity of the SB8200 how can I open the access via my Linksys router to access the modem’s web page?Also,

3133

1 year ago

RubbermanThe Many

asked in SB8200

cant login SB8200 and modem reboots

On my SB8200 when I go to 192.168.100.1 and login, it pops up a window saying you need to login first. I click Close and it takes me back to login screen. I cant get in. I’m wanting to check the logs today see why my modem reboots constantly. I did a modem reset and still does the sane thing. I tried accessing modem from an iPhone, iPad and computer using safari and chrome with all the same issues.

3045

1 year ago

DloomThe Many

asked in SB8200

New SB8200, but MAC & SN already in use…

Hey guys. I bought this modem in Nov2019 off Amazon. It’s been sitting in storage, new in the packaging ever since, while I went through the longest divorce in history.House is sold, new life beginning, and I ordered up new service with Comcast, at the new place. Tried to hook up my own modem with their support, and opened the Arris box, gave them my MAC ID and SN and they are telling me both of those are already in use.Tech said sometimes the manufacturer will rent inactive numbers out, and to ask for a release or replacement. I couldn’t find a call number to reach Arris. Where do I begin?

1012

1 year ago

tammys567The Many

asked in SB8200

Unable to install correct modem on Surfboard Central App

I setup the Arris Sb8200 model in my home.After install and registered somehow it shows I installed the Sb6141 model although the s/n is correct. Is there a way to fix this without reinstalling?

721

1 year ago

mstrong1507The Many

asked in SB8200

SB8200 ISP Slow Speeds

Hi! I recently upgraded my ISP plan to go from 400mbps to 800mbps down. After trouble shooting directly with my ISP and my router, I still receive the same speeds (~400mbps down). I have tried testing my speeds on different devices and different locations. Is there anything I can do directly with my Surfboard Modem or settings I can configure? I don’t have a device right now that has an ethernet port that I can directly plugin to the modem to check speeds from there. Thank you!

881

1 year ago

JhayrimielThe Many

asked in SB8200

SB8200 I cannot find the wifi security key on the bottom of the devics

I had to replace my old modem due to it being destroyed by a family member, but when I received a new modem, it did not come with a wifi security key unlike my previous modem. Am I just blind or dumb?

2361

1 year ago

Brian123The Many

asked in SB8200

SB8200 overheated and dead after 24 hours?

I connected my new modem, then 24 hours later no internet. The modem is hot to the touch and doesn’t light up. Should I just return this thing and get a different brand?

3112

1 year ago

garrysThe Many

asked in SB8200

SB8200 Modem will not connect to internet. Need help getting Arris to honor the warranty.

SB8200 bought around Oct. 2022. Still in warranty. Will not connect to internet. Power light and second light are on, third light comes on and blinks twice then goes off, fourth light never comes on. Operated very hot before this. Dropped out several times during my internet session and had to reset power to correct. Need someone to help me replace modem. I worked with an Arris tech for a long time on 06/23/23. Called and had a technician come out and check my internet. He said there was nothing wrong. No luck! He installed a modem off his truck and told me to check back with Arris. HELP!

frankmundoThe Many

How can I improve my wifi calling?

352

1 year ago

dantekim17The Many

asked in SB8200

How can I update Arris SB8200 modem hardware version 6 to 7 update?

Spectrum said they not no longer Version 6 SB8200 is compatible with their network. Do I need to buy V7? Or can possibly update firmware??

39021

1 year ago

jfleming16The Many

asked in SB8200

SB8200 modem issue no internet

SB8200 modem has all lights on as expected but I’m unable to connect to the network. I called out internet provider and after running some tests said it must be the modem. What else can I do to diagnose the problem since I cannot get help from the internet provider and I do not seem to see a phone number for tech support for my arris modem? Any help would be greatly appreciated.

1621

1 year ago

RoncerrThe Many

asked in SB8200

First Time Activation - No Internet

Frist time. No internet. Only accesses Spectrum activation page. I thought they should all be green. 3 are green and one is blue (download).

2502

1 year ago

jimtThe Many

asked in SB8200

SB8200, download light is blue, upload is green,

I can navigate to Yahoo and Google but no where else, VPN no longer works and will not connect to my linksus wrt610n router. Had no issues with my sb6141

mattThe Many

I am trying to get my Roku started and my SB 8200 warranty has expired. I just need to figure out the network name and password so I can get going with this,

772

1 year ago

satiredThe Many

asked in SB8200

Arris SB8200 modem vs Xfinity

I have an Arris SB8200 modem that has worked well for several years, with no issues. There were some early on, but those were resolved with line repairs by Xfinity. A while back, Xfinity gave me an automatic upgrade to 1200 Mb per second, but I kept my gigabit modem since I was happy with the lower speed. Recently I have had intermittent dropouts on streaming music and video services and the modem reception light that had been blue(Docsys 3.1) is primarily green, with occasional brief attempts to change to blue. Initially xfinity service suggested it was due to upcoming line service in the area. That time has passed, and nothing has changed, so today they told me the problem was incompatibility between their upgraded equipment and my modem. They suggested I rent equipment from Comcast and that would solve the problems. Does anyone have any suggestions or experience with this kind of issue? Should I have a technician come out and check the lines on my end to determine what else might

BuzzmeThe Many

How can you tell how old ARRIS SB8200 is. Like when was it made. Can you tell from the serial number?

3581

1 year ago

Fredo1948The Many

asked in SB8200

Is MOCA enabled / present on SB8200?

Is SB 2022 MOCA enabled? thanks

3193

1 year ago

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