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SB8200

DOCSIS® 3.1 Cable Modem

  • 469 Topics
  • 1,209 Replies
469 Topics
T
The Many
TomHuckstepThe Many
asked in SB8200
SB8200 web manager responds to 192.168.100.1 AND 192.168.0.1

When signing into the web manager tool for my SB8200 cable modem, it responds to both 192.168.111.1 and 192.168.0.1. This causes a problem for me in that a router in my network can only be managed using 192.168.0.1 and when that is entered, it only goes to the Arris login screen. I cannot get to the router no matter how I’ve tried.Can I, as an end user, somehow delete the 192.168.0.1 IP address from my SB8200?

2151
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Rockstar!
6 months ago
A
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averynThe Many
asked in SB8200
SB8200 intermittent internet connection and send led light on the modem is blinking constantly

Hello, Yesterday afternoon my internet cut out and I have been unable to restore it. I checked with my ISP and they aren’t showing any outages in my area, and tried resetting my network on their end but are unable to communicate with my modem. The upstream light on my SB8200 consistently blinks despite resets and factory resets. I logged on to my Connection pages and Event Logs.On my connection page it shows Acquire Downstream Channel-813000000 Hz -LockedConnectivity State-In Progress- Upstream Parameters AcquiredBoot State-In Progress-UnknownConfiguration File-In Progress-Security-Failed-BPI+DOCSIS Network Access Enabled-Denied  My downstream and upstream bonded channels seem to have proper power and SNR outputs.On my Event Log Event Level 3 with description “No ranging response received - T3 time-out”Event level 5 with description “B-INIT-RNG Failure - Retries exceeded” Thank you for any help!

1741
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Rockstar!
6 months ago
B
The Many
BiggccThe Many
asked in SB8200
SB8200 v3 - Xfinity config file not load on event log

Cannot get DOCSIS 3.1 running on my new sb8200. Lights on the front always are green. Checked the event log and there are critical error saying the config file will not load.Have xFinity coming out on Wed. but don’t think they’ll be able to fix it unless the tech is aware of this issue and there is a fix.From what I’ve read others had this same problem - wondering how it got fixed so they get full speed and take advantage of DOCSIS 3.1.

791
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Rockstar!
6 months ago
E
The Many
ehalvarezThe Many
asked in SB8200
modem SB8200 Ethernet not working

Bought my modem jan11 2023 and the auto check said the warranty expired oct23. The customer service office is closed for some reason.

411
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Rockstar!
6 months ago
robbober
The Many
robboberThe Many
asked in SB8200
Intermittent internet connection on SB8200

Problems with my SB8200 Modem (purchased 06/11/2023), I can no longer restart my modem without restarting it many times to get it to work. I have what is called a net reset device NetReset that would automatically restart my Modem and router everyday but can no longer restart the modem unless I restart it many times to get it to work.If you restart it or the power goes out it will reboot like normal with the 4 lights on the front all on solid when booted up from the top down Solid Green, Solid Blue, Solid green, and solid green and the light on the back will be blinking green like the internet is working but router tells me connected but no internet, even if you connect a computer or laptop directly to the modem it tells you the same thing connected but no internet.So then I have to restart the modem and have to do this many times, normally 4 to 5 times then it will work as long as it stays on, if you unplug it you have to do the same process all over again. And yes I have done a reset

1161
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Rockstar!
6 months ago
R
The Many
Rigns99The Many
asked in SB8200
SB8200 Failed FW update on Xfinity

Hi, I recently bought a second hand SB8200 and went to the events log at the web interface and noticed there's a constant 'FW update initiated' followed by a 'FW update failed due to incompatibility' every time I either reset the modem or every few hours or so. I'm aware I'm way behind in FW updates and that my ISP is supposed to update it, but for some reason it can't or it won't take it. I've talked with Xfinity agent through both their app and Reddit, the first telling me that they couldn't see the modem as online and the latter saying that the update Arris provided to them is not good and that this modem has a lot of problems with many ISPs so they couldn't do anything until Arris fixed it. I'm trying to get it updated cause from time to time I lose internet connection and apparently it's because it's trying to update itself but because it doesn't work, it resets briefly, enough to ruin games or streaming, and sometimes connection slows down permanently, needing a modem reset. I ho

1201
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Rockstar!
6 months ago
L
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Lschirmer126The Many
asked in SB8200
Network name and password for SB8200

Where do I find the Network and password to sign in on my computer?  It’s not on the bottom of my modem.

2291
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Rockstar!
6 months ago
M
The Many
moushkyThe Many
asked in SB8200
Alternate way of downloading Fing - SB8200

I just bought an SB8200 and in addition to having issues with connecting to Xfinity during peak hours (still don’t have an answer on that from Arris or Xfinity) I am trying to download Fing.  When I go through the initial set up where it says it’s sending an email to download and set up, the email never arrives. Any suggestions?

381
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Rockstar!
6 months ago
R
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RedmanThe Many
asked in SB8200
opening ports on SB8200

I’d like to open some ports to my arris surfboard router?How do I do this?Thanks

681
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Rockstar!
6 months ago
M
The Many
mbrobersonThe Many
asked in SB8200
SB8200 Latest Hardware Version

Hi SB modem community! Does anyone know what is the latest hardware version available for the SB8200 cable modem? I have a version 3. Regards,,mbroberson

1351
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Rockstar!
7 months ago
V
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virvusThe Many
asked in SB8200
SB8200v3 only 1 connection even with switch

I got connected with xfinity with my SB8200v3 and I used 1 ethernet port to connect a switch to. I have 3 PCs connected to the switch but only 1 is getting internet. I tried looking into the setting of the modem and the app but neither one will give me any options. I have been trying to look this up and can’t figure out anything other than I might be in bridge mode but can’t figure out how to get out of bridge mode if I am.

941
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Rockstar!
7 months ago
S
The Many
smurrahThe Many
asked in SB8200
SB8200v3 has no advanced tab to turn on link aggregation

Where is the advanced tab??? theres no way to turn on the link aggregation thats the whole point of buying this modem to get 2 Gbps speeds. 

1695
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Rockstar!
7 months ago
P
The Many
pseudoqueenThe Many
asked in SB8200
SB8200 Not Connecting to Optimum

I just recently purchased an SB8200 and it will not connect to optimum, I’ve had a tech out and he was able to connect one of their modems to the network but couldn’t get my modem to connect.  Phone call with support also was unhelpful as they said they don’t know why it won’t activate and they said to reach out to Arris.  It just gets stuck on solid UP/DOWN lights and flashing connecting and than cycles that forever.  Below is the event viewer from the last time they tried to activate the modem.14/04/2024 02:14:18    notice    GUI Login Status - Login Sucess from LAN interface; client ip=[192.168.100.20];CM-MAC=8c:76:3f:fc:ce:7b;CMTS-MAC=00:01:5c:c0:04:4a;CM-QOS=1.1;CM-VER=3.1;14/04/2024 02:14:08    notice    GUI Login Status - Login Fail from LAN interface; client ip=[192.168.100.20];CM-MAC=8c:76:3f:fc:ce:7b;CMTS-MAC=00:01:5c:c0:04:4a;CM-QOS=1.1;CM-VER=3.1;14/04/2024 02:14:03    critical    Config File Rejected due to Invalid or Unexpected TLV 11;CM-MAC=8c:76:3f:fc:ce:7b;CMTS-MAC=00:

4411
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Rockstar!
7 months ago
L
The Many
little3411The Many
asked in SB8200
Unable to connect devices through wireless connection on SB8200

Modem is lit solid green, but tv, phones, laptops not  connecting wirelessApp is showing error message for registration, and also says connect to WiFi with Ethernet cable 

1311
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Rockstar!
7 months ago
O
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odie2020The Many
asked in SB8200
sb8200v2 WiFi with Linksys router not working

Connected to internet but WiFi with Linksys router not working…no WiFi 

871
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Rockstar!
7 months ago
S
The Many
seanW63The Many
asked in SB8200
Trouble connecting to SBC app on SB8200

I recently bought the SB8200 and every time i try to use the app is says troubke connecting to the backoffice service how long is the app going to be down for? 

851
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Rockstar!
7 months ago
J
The Many
jonmich426The Many
asked in SB8200
password to connect with router - SB8200

I reset my modem and now it is back to the factory name TP-link***** and says enter password. Did this come with modem originally. If I don’t have it do a need to buy a new modem?

1652
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Rockstar!
7 months ago
S
The Many
Sonnenbergscott69The Many
asked in SB8200
sb8200 surfboard app says im in offline mode

surfboard app says im in offline mode and won't let me test my network

551
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Rockstar!
7 months ago
W
The Certified
wilpr74The Certified
asked in SB8200
New Modem/Router STILLSlow Wi-Fi on SB8200

I posted this about 2 months ago.  I made the adjustments, but I’m still having issues.  In fact, my “guest” network is actually much faster than my main network so I’m not sure what to do.  I created a home network, guest network, and IOT network.  Still it’s not improving. Does anyone have suggestions?  I’m not sure if there are more specific ways to “modify” the modem or settings?  I’m good with technology but no means a modem/network guy. Thanks for any help! 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.  

1668
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Rockstar!
7 months ago
D
The Many
DanielbThe Many
asked in SB8200
No internet on arris surfboard model sb8200

ImageImageImageI am trying to connect my modem to my network and facing issues I want you to help troubleshoot for me(it is a arris surfboard model sb2800 docsis 3.1 cable modem. I’ve been waiting thirty minutes and the light has only shown solid blue on the downstream. It needs to show either solid blue or solid green on the connection(very bottom one) to work. Look at the attached screenshots for reference.

2251
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Rockstar!
7 months ago
M
The Many
MaruayThe Many
asked in SB8200
is it safe to use an opened box or returned Sb8200?

I am buying a Used, returned, opened box arris SB8200. wondering if I should concern of possibility that someone might implant a malware in it?  I don’t think I can update firmware myself and am not sure if service provider will update it as it is my own modem.   thanks

621
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Rockstar!
7 months ago
M
The Many
mhsinpaThe Many
asked in SB8200
SB8200 two ports

I have two ports in back of my SB8200. One goes to the wifi router, working fine. Sometimes I want a “wired” connection. I tried plugging wire into the other port in the back of the cable modem, it lights green, but computer says “no internet”.  I’d prefer to have the wire into the modem (more direct) than a wire into the router.  How to have both ports working with one to a router and other direct to a computer?  Thank you.

2281
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Rockstar!
8 months ago
J
The Many
jcdeckerThe Many
asked in SB8200
no internet while connecting with router on SB8200

I have an SB8200 that will work when directly connected to a computer, but when I connect it to a Linksys wireless router, it won’t connect. I ended up buying a new one, but I would like to understand if anyone else has seen this.

2731
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Rockstar!
8 months ago
V
The Many
Viper21The Many
asked in SB8200
Ethernet port light status on SB8200

The Ethernet cable in the rear is blinking Amber color

711
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Rockstar!
8 months ago
D
The Many
Dakotaluisa2016The Many
asked in SB8200
phone number to reach Arris tech - SB8200

Is 866 757 3598 a scam number or a legit number. If so how do I physically talk to a rep.

1431
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Rockstar!
8 months ago
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