SB8200

I recently returned my xfinity modem/router and purchased a new one.  My IT Guy at work suggested the upgrade to speed up my service.I have the SB8200 modem and TP-Link - AX1800 WiFi 6 Router.I hooked everything up, but the wifi seems to be slower than before.  I don’t know if something isn’t configured correctly? I’m no expert at all so any help would be appreciated.  Here are the screenshots I thought might help.  [edit: removed image with personal information]

I just bought this refurbished modem and was not provided the password. There is no password information on the bottom, which is super annoying. I just tried to factory reset and it still didn’t work. I am beyond frustrated and angry that I cannot find a phone number to contact Arris for help after Xfinity couldn’t help anymore. How do I get this damn thing to work?! Please help!!!

Hi,  I just upgraded from an SB6120 to the SB8200. All seems well, except I cannot reach the configuration/status page at 192.168.100.1 (It returns “This site can’t be reached” after a timeout) . I can reach my router at 192.168.1.1 in the new configuration (modems swapped),  and access to 192.168.100.1 worked fine before to the older SB6120 when connecting through my router. But the SB8200 refuses to connect, even when I go the extra mile by directly connecting it to my computer and power-cycle the modem. (Which is obviously a terrible workaround, but I tried it)With direct connection from computer to modem, I can use the internet after I reboot the modem, so the computer and modem are talking. But still I cannot reach 192.168.100.1 to look at the Dashboard/etc in the modem :-( Is there anything that my internet provider might have done during setup to lock me out (I didn’t try it before swapping the modem with the IP). Is that possible?  And why did the old SB6120 co

Product description says you can use app. Will the SB8200 work on the arris surfboard manager app?

Where can you find the firmware ? I am at   AB01.01.009.51_080720_183.0A.NSH and I know there has been a newer firmware out there. Can my ISP update the firmware on my owned modem? Can you SSH into it to upload it?

Hello I've checked multiple times with my ISP, Optimum, who have confirmed they are providing between 900-1.3gb down on multiple occasions I connect to an Archer AX21 (DOCSIS 3.1) with a cat5e and it gets 300mb down.Ive tried connecting to the modem (SB8200) with a DIFFERENT cat5e and get 400mb down. I use the first cat5e and still get 400mb down. I'm getting 40-50% of my ISP provided speed through the modem when directly connected . I also ran through support with Archer and they don't have any obvious solutions from their end since all the speed drop occurs before their product

I’m trying to set up my surfboard Model: SB8200 and it’s asking for SSID and password provided on device label and I don’t see this info on the label. Please help. I’m getting very frustrated. There was no QR code either. 

Why isn’t my modem operating in docsis 3.1 mode when my ISP says it’s supposed to be?

I have purchased a brand new SURFBoard SB8200. But lately i have been having several interruptions on my connectivity, where it seems the modem reboots itself. This is causing me a lot of issues I am running my own business, and multiple occasions this reboot, interrupted my zoom session (this is not professionals), it does not reflect well on my Company. Please advise why this is becoming an issue.

My ISP sparklight is unable to push an update to my modem. I am only receiving docsis 3.0 and should be receiving 3.1. I am also unable to use the web interface by typing in 192.168.100.1

Hi,Purchased this device in March of 2023 and It recently failed.  We unplugged, tried different power strips and outlets, etc etc etc.  Finally our ISP Xfinity came to investigate and confirmed that the device was not functional.  We are looking for a replacement or refund.  Please Help!Thanks so muchHilary

I am using an external Linear power supply for my surfboard, 8200 modem. Is the diameter of the pin in the power inlet 2.1 or 2.5? Thank you

New sb8200  the lower blue light turned green after 3 weeks use.  Provider wifi has a good signal. I checked.   The eero extenders are on as a few devices have signal and are working!  I have unplugged the modem and pushed in the reset button several times to no avail.   Down stairs tv on signal, upstairs tv has signal. What gives? 

Trying to log into an active modem by using the browser.  Used the default password (last 8 s/n) and then it immediately prompts me to change the password; I’m good with that.  But when I enter the new password (example Abc#1234) is continues to prompt me to enter a valid password.  According to the displayed syntax it is correct.  I’ve tried multiple variations and when I leave something out the correct error message displays (such as numeric required, etc.).  I’m stuck in an infinite loop; every time I use a valid password I continue to get the popup “192.168.100.1 says Please enter a valid New Password.”  Modem is running fine so I don’t want to reset the modem.  Any suggestions for a solution?

Let me start by saying that I have purchased a new SB8200, had a tech replace the coax in the wall and he also provided me with a new cable. My modem signal levels, and I forget the exact values he specifically mentioned, are in the dead center of the allowed ranges. “Perfect” is how he described them (for what that's worth) because they could fluctuate and still be within the desired range.I did not have any issues with packet loss until I purchased 3.1 modems. I also own a g36 and experience the same phenomenon of 1-4% packet loss out at rather constant rate. I do not game with a router and I unplugged directly into the modem itself. I have tried different ethernet cords. I have also used the hidden troubleshoot menu on my series x and completely factory reset it… twice.I recently read a thread that someone else with a 3.1 modem was experiencing packet loss out as well. My very loose “theory" is that AQM, active Queue Management, is dropping packets in order to ensur

Hi, I have bought my modem since August 2023 as a replacement to the modem provided by my ISP. SB8200 never managed to work, and it show the following symptoms : 1. The green light of downstream keep flashing green 2. Startup ProcedureAcquire Downstream Channel : 0 Hz : In ProgressConnectivity State : In Progress : Not SynchronizedBoot State : In Progress : UnknownConfiguration File : In Progress        Security : Failed : BPI+DOCSIS Network Access Enabled : Denied 3. Downstream Bonded ChannelsChannel ID : 0Lock Status : Not LockedModulation : OtherFrequency : 0 HzPower : if the cable is disconnected, it's around -51.6d BmV. When it's connected, the value changed randomly, have values around 0 and sometimes become even positive.SNR/MER : 0.0 dBCorrected : 0Uncorrectables : 0 4. Event logAll the time i have this error"SYNC Timing Syn

Only green power light. Factory reset does nothing. No flashing lights. No reboot. Nothing. Plugged in for several minutes. New modem. Lights were working. Did a factory reset. Now nothing but "I'm plugged in".

I have talked to Cox Tech support twice, they did everything on their end to setup the SB8200.They sent rests to the modem 5 separate times and I unplugged it everytime, the modem does not respond. All the lights go green and only one eventually turns solid blue….absolutley nothing else happens after at least 1.5 hourse on the phone with Cox Tech support.I need this unit replaced.

How to change the Management IP.  192.168.100.1 conflicts with the network subnet.

I’ve followed the instructions to factory reset the modem several times but the event log doesn’t clear. Is there anything I can do?

Can’t connect xBox

I cant find a clear answer on versions for SB8200.  Other questions have been asked but no clear answer.  Need v3 as preferred for Spectrum.  And am I correct that there is no way to contact Arris support unless you pay for the support tier?  Thanks !

Only green power light. Factory reset does nothing. No flashing lights. No reboot. Nothing. Plugged in for several minutes. New modem. Lights were working. Did a factory reset. Now nothing but "I'm plugged in".

I have Xfinity and my normal speeds are about 700mb.  However, every few days my speed slows down to 3mb and I have to boot the SB8200 to get the speeds back up.  All front lights always stay green even if there is a provider issue.???  Today no internet with all lights green, reboot the Aris and internet is back.???

I’m not able to connect my new SB8200 to my laptop to activate it. The top light is green, the 2nd one is blue and the other 2 stay green (it should be white - blue - blue -white). I’ve restarted it multiple times and also used the reset button but nothing changes. I can reconnect my old SB6190 using the exact same connections and it works fine. Any suggestions?