SB8200

DOCSIS® 3.1 Cable Modem

  • 407 Topics
  • 1,068 Replies

407 Topics

P
The Many
PJ SchuThe Many
asked in SB8200

Slow speed on SB8200 2.4 v 5.0

My apologies very novice at IT issues.  Have a Tesla solar gateway that need to connects w 2.4 and can’t seem to get it connect to my sb8200.  Sorry to bother, can anyone guide me to how to allow for this slower connection? Thank you. 

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Guardians of the Gateways
6 hours ago
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The Many
Rail-CIOThe Many
asked in SB8200

started unicast maintenance ranging - no response received

Having issues with timeout for Unicast Maintenace. The modem timing out with error codes 16 and 24. Have confirmed all connections. Direct connect to modem (no splitters), eero 6 mesh network without issue. 

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R
The Many
1 day ago
B
The Many
bulkhedThe Many
asked in SB8200

No internet on SB8200 connecting with router

You know that little world globe that's normally position down in the right-hand corner of your screen. Right now it's not a globe but an icon of a computer screen instead.When I hover over that icon, I get that the 5Ghz Linksys routed is connected.   But when I open up that icon, where you would normally hit "connect" it say no internet connection. Thats my problem.  I just changed out an SB6141 and all connections worked.  I added this new SB8200, and I’ve now got no internet to connect to my Linksys WBT3200ACM router.But my cell phone, tablet, and laptop all connect to the router with a strong signal.  Its just this desktop HP that no longer works right.  Destops 2years old.I did get the correct connection momentarily when unplugging the router and resetting but that lasted but a few minutes

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Guardians of the Gateways
2 days ago
S
The Many
SeanThe Many
asked in SB8200

SB8200 - No internet

Modem is activated but won’t provide internet to router or PC. 

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Guardians of the Gateways
3 days ago
M
The Many
marymack21The Many
asked in SB8200

Trying to Set Up Arris Modem: Next Step Requires SSID for SB8200

Instructions say to locate the SSID and Password on the device label. There is no sub no label. How do I complete this step? 

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Guardians of the Gateways
3 days ago
U
The Many
ukrishna7The Many
asked in SB8200

SB8200 Xfinity only 1 upstream locked channel

My SB8200 and SB6183 only get one upstream locked channel at 35.6Mhz. I see many posters have 4 locked upstream channels. How have other folks resolved this issue? Channel ID Lock Status US Channel Type Frequency Width Power 4 Locked SC-QAM 35600000 Hz 6400000 38.3 dBmV  Also the SB8200 on power-cycle takes 18 minutes to lock the upstream channel. The upstream channel tests 16.4, 22.8, 29.2 at different send power levels, till it reaches 35.6 and acquires lock. Has anybody else faced this problem.Power cycle timestamps are mm:ss.01:00: WebUI comes up in 192.168.100.1 01:25: Receive LED steady green, send LED flashing green. 01:25: Downstream channel locked 49.5Mhz, 13 dBmV, 44dB SNR. 01:25: Upstream parameters acquired. 01:26: Upstream channel 22.8Mhz, 48.8 dBmV. 05:25: Upstream power oscillates like th 59, 49, 38, 28, 61, 51, 46, 41, 31, 64 dBmV. 12:11: Upstream channel 29.2Mhz 14:08: Upstream

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Guardians of the Gateways
3 days ago
U
The Many
ukrishna7The Many
asked in SB8200

New SB8200 uplink led blinking (not syncing)

I bought a new SB8200 upgrading from an SB6183. When I connect to the same location with the same coax cable as the old modem, the receive.led is green steady, but the send led is green flashing. Per the manual, it means the modem is scanning for an upstream (send) channel connection. I have talked to Xfinity and they cannot remote troubleshoot because the modem appears offline. When I put back the SB6183 I get steady green receive and send leds that then turn up Internet in 5-15 seconds. So my problem is the flashing send led for 5-10 minutes without syncing. Has anybody else faced this problem with SB8200. Thanks.  

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U
The Many
4 days ago
C
The Many
cd.santanaThe Many
asked in SB8200

Why is my SB8200 blue receive light always on? Internet still works.

After recycling powered to my SB8200, the blue receive light is always on. Thankfully my internet works fine and signal is getting from the modem to the router and the speed checks are normal.  Xfinity is my service provider with the 900mbps plan and there are not outages updates or issues for me or my area. I have tried recycling power and have also done a factory reset. Still no change. 

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Guardians of the Gateways
4 days ago
R
The Many
Rob GThe Many
asked in SB8200

Dropped connection and too hot to touch the modem SB8200

Last September my old modem stopped working so I purchased a Arris SB8200. For the last few months we have experienced numerous dropped connections. It is now being dropped even a few times a day.At first the lower earth symbol would start blinking. Now it stays on like it should but is getting almost to hot to touch. I did a search for cause and this model was the first thing to pop up. Overheating was a large issue.We purchased the modem from Best Buy on 09-22-23. According to this web site there is a two year limited warranty.What can be done to get this modem replaced or fixed?We look forward to hearing back.ThanksRob Garrison 

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Guardians of the Gateways
4 days ago
N
The Many
neo1981The Many
asked in SB8200

Arris SB8200 vs. Arris S34. Same chipset (BCM3390), but only one is supported for Next Gen Upload speeds. Why??

Recently found out that Arris S34 is getting released and it will be supported for the Next Gen Upload Speeds (100 MBps/ 200 MBps). Source.Arris S34 is now listed on Amazon for pre-order.But, both Arris S34 and Arris SB8200 use the same chipset BCM3390 (source: the listing page on Amazon for each modem). Can anyone explain why one is supported and the other isn't? Technically, the firmware shouldn't be an issue at this pt. I am genuinely curious.

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N
The Many
8 days ago
D
The Many
Dmin11The Many
asked in SB8200

Loosing full speed on account

I have owned this Ariss SB8200 for several years. No problems. SP is Optonline. No problems. A few months ago, I received an upgrade from my basic service speed of 100mbps to 500mbps. No extra charge. Long story not worth going into. I am just starting to concentrate on solving this problem as I haven’t needed the speed.My problem is that I keep reverting to my 100mbps speed. I have done all the regular checks and tried different cables and connected directly to the modem. The issue always comes back to the fact that after several hours or days I suddenly find my speed back to the old 100mbps. Rebooting both modem and router in the proper sequence always gives me the full 500mbps for a finite time, then it reverts to 100mbps. The same when connected directly to the modem with the computer. The time it takes to revert is never the same.Is there something I should do to the modem to solve this?Thanks for any help.Regards,Dmin11

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D
The Many
10 days ago
H
The Many
helpmepleaseThe Many
asked in SB8200

Insanely slow upload speed on SB8200 (download is fine)

Hello, I recently got an SB8200 and a Flint 2 router to replace my Xfi gateway. The setup went well and I followed the manual and activated the modem with Xfinity. I went to go run a speed test and the download was 700 mbps, but upload was only 5.9 mbps at most (I have a 500/100 plan). It would never exceed 5.9 mbps, besides when I first run the test, it goes to around 7 but then rapidly drops back to 5.9 mbps. I’ve spent the entire day trying to fix this and I’m completely out of ideas. I tried contacting Xfinity support to see if they are limiting it somehow but their support was just trying to sell me their products for 40 minutes straight. I contacted Arris support and they told me to try to reprovision my modem, which I did, but it didn’t make a difference in my upload speeds. I’m completely out of ideas and I would really appreciate any help or any ideas, thanks in advance.

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Guardians of the Gateways
11 days ago
Z
The Many
ZacharyquinnThe Many
asked in SB8200

No internet on SB8200 after setup

I'm following the instructions to setup an SB8200 modem, but can't connect to the Internet. The Xfinity app has successfully connected to the modem and says it's providing Internet, but when the Internet light on the modem isn't on. When resetting, the lights turn green as they cycle through, but as soon as it finishes the Internet stage, they turn off and only the Receiving light stays on (but turns blue). Why isn't the modem connecting to the Internet?

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Z
The Many
11 days ago
D
The Many
deankThe Many
asked in SB8200

Unable to activate with Xfinity - sb8200

SB8200 with Xfinity not connecting. Says no IP address

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Guardians of the Gateways
17 days ago
W
The Many
w81clarkThe Many
asked in SB8200

SB8200 LAG & firmware issue

I have errors in my event log on my SB8200 after enabling LAG. I am on firmware AB01.01.009.36.02_022720_183.0A.NSH , I have read that Arris has fixed LAG issues via firmware updates. Spectrum tells me they are not responsible for firmware of non-leased devices, and that I need to update the firmware myself. What can I do? Update: Spectrum says “only firmware I am seeing for that model device is for the Version 6 Docsis 3.0”

2
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Guardians of the Gateways
23 days ago
D
The Many
denis9834The Many
asked in SB8200

Intermittent internet connection on SB8200

I have same thing happening with SB8200, like every week or month it would drop down to 30mbps and power cycling the modem is the only way to fix it, I am in Phoenix.

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Guardians of the Gateways
23 days ago
F
The Many
FrstflyrThe Many
asked in SB8200

arris 8200 compatible with TP link

is the 8200 compatible with router tp link tl-sg108e 

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Guardians of the Gateways
23 days ago
T
The Certified
tirbldr21The Certified
asked in SB8200

Refund status on SB8200

I've been trying to talk to someone on the phone or even live chat but neither one exists you keep sending me in circles this is no way to run a business but a good way to get a bad reputation all I want is to get my refund on a SB8200 that I purchased on 5/08/ 24 my order number is 59472 you tell me I can but just try getting it just give me the info I need to return it and I'll be happy, I already see a lot of unhappy people on your community site.

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Guardians of the Gateways
25 days ago
R
The Many
RocceralThe Many
asked in SB8200

Unable to connect EERO router with SB8200

I just purchased the SB8200. I have activated it with my ISP (Spectrum).  Everything seems to be working on their end. I can’t get it to connect to my gateway eero 6. I have internet when connected directly to the computer from modem, but cannot get the eero to come online

1
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Guardians of the Gateways
1 month ago
K
The Many
Kaderlite11The Many
asked in SB8200

How to switch new service provider on SBC app - SB8200

I recently switched service providers but I am still showing my old one on the app. How do I change this and is it affecting my wifi?

1
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Guardians of the Gateways
1 month ago
N
The Many
Ncalvano67The Many
asked in SB8200

SB8200 - Unable to connect thermostat with wifi

I installed a new surfboard SB8200 modem with a EEros wifi mesh system to replace my rented modem from Spectrum.Everything installed smoothly and everything wifi works good except for my Honeywell wifi thermostat. I have a Honeywell T6 wifi pro thermostat. I used to be able to control it from my phone. But ever since I got the new modem it doesn’t seem to work.I called Honeywell support and we figured out the thermostat is not receiving an IP address. So they told me to call my cable (Spectrum) provider who told me everything is working fine. So I called Honeywell support again and someone new told me to contact the modem support. Is there a solution for this issue?Thank you

1
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Guardians of the Gateways
1 month ago
J
The Many
jag62The Many
asked in SB8200

slow speed and no internet through direct connection on SB8200

May seem like an odd question.  The SB8200 lists a dl speed of 1gb. Mine is about 3 years old and I just updated my service from 500mb - 1gb, but I am not seeing any higher speed. The max I see is in the 500mb area and thats the speed test directly through my router. I have tried to plug my laptop directly to the modem but I never get an internet connection for some reason that way.Thanks

3
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Guardians of the Gateways
1 month ago
A
The Many
AmandamackeyThe Many
asked in SB8200

wont accept new update SB8200

Turn ot off about every 10 days to reset. Won't accept new update so constantly knocks me off the internet. 

3
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Guardians of the Gateways
1 month ago
A
The Many
Alan49The Many
asked in SB8200

Hulu and Netflix dropping out on SB8200

I have Xfinity.   Their channels work fine.  But streaming from other providers sometimes have problems.  I note that Hulu which I just got, would drop out 3 times in a half hour.  Video would just drop to whatever cable programming was on at the time.  Also happens, let frequently on Netflix.  Sometimes it just freezes (looks like it’s buffering) and sometimes it freezes before dropping out and sometimes it just drops out.  Called Xfinity and they said modems have end of life of 2-3 years.  Bought mine in 2021.  Suggested I buy a new one.  I’m guessing they just say that every time they don’t know.  I’ve changed their cable box and nothing changed.  I note that people send in logs and get advice.  Can someone tell me how to obtain the necessary logs to post online?  My mesh network is Eero.

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Guardians of the Gateways
1 month ago
D
The Many
Davidalan30The Many
asked in SB8200

Trying to add new modem arris surfboard SB8200

I’m trying to add a new Arris Surfboard Cable Modem, but when I tap to add device on the app, it only gives me the options Surfboard Max or Gaming Bridge or Network upgrade kit. I need to add Surfboard Modem, but it doesn’t come up as one of the choices.    

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Guardians of the Gateways
1 month ago
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