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SB8200

DOCSIS® 3.1 Cable Modem

  • 429 Topics
  • 1,109 Replies
429 Topics
T
The Many
TerrygoXThe Many
asked in SB8200
Slow speed internet on SB8200

I have an SB8200 and pay for 1 Gig download from Xfinity.. I get a lot less than that and when I speak with Xfinity they just say its a modem issue with the SB8200. Everything looks fine with the modem. Downstream Bonded Channels are all within range - the Upstream Bonded Channels are a little low but not huge. How do I run a diagnostic test on the SB8200. This is the second SB82000 in 4 years and I don’t want to buy a third if they don’t last much beyond the warranty. Having said that, I don’t trust Xfinity 

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The Many
1 day ago
H
The Many
Hay30The Many
asked in SB8200
8200 Keeps Rebooting Xfinity Blames Arris

I have had my internet and Arris installed for a grand total of 7 days and I am infuriated. The router reboots randomly. Had Xfinity out, they say Arris is not great and it's not their signals. When it comes back up, it is so slow. I ran a speed test, it didn't complete the test. I see a red error message from Ookla. "UPLOAD TEST ERROR" A socket error  occurred during the upload test. A firewall could be blocking the connection or the server might be having issues." I am not a network tech and have no idea where/how to start finding network logs, etc.  

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H
The Many
1 day ago
K
The Many
kdeangeloThe Many
asked in SB8200
Refurbished SB8200 from Amazon is dropping connection 30+ times a day

Zito Media (my ISP) sent out a tech because how how frequently the internet has been dropping out. But even after running a new line into the house the problem prevails. They told me it’s a problem with the modem. I have only had this modem for 9 months but it was refurbished and now just barely out of warranty of course. Is there any fix or can I get any sort of credit/discount on a replacement modem?

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K
The Many
2 days ago
L
The Many
laurmelaThe Many
asked in SB8200
Trying to reset password. Arris SB8200

I have been trying to login to reset password.  Reset modem and tried the admin and password, still get error message that they are invalid.  What do I do now?  

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Rockstar!
2 days ago
7
The Many
77hercules77The Many
asked in SB8200
password for SB8200v3

Can't find my password 

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Guardians of the Gateways
3 days ago
T
The Many
TrougarThe Many
asked in SB8200
Unable to login GUI web portal on SB2800

Can’t access web manager for SB2800 (bought 8-21-2024, setup & running), tried going straight from modem to laptop, tried resetting modem, tried turning off firewall, tried both Edge and Firefox, no go, gives me a timeout or can’t reach this page.

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Guardians of the Gateways
8 days ago
C
The Many
Cushta69The Many
asked in SB8200
SB8200 Stopped working.

SB8200. Modem stopped working, wont connect. have tested all cables. They’re fine. have hard reset modem multiple times and have attempted to login to Arris using IP, but all default usernames / PW’s do not work. I’ve wiped history and cache and used multiple alternative browsers. I’ve tried admin & last 8 of S/N. admin & pw. cusadmin & pw. I’ve tried all variations with blank pw so just clicking enter etc. Nothing works! Unable to login to see modem and try to resolve issue. Also this “live chat” isn’t a LIVE CHAT at all. Terrible “customer service..”

1
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Guardians of the Gateways
10 days ago
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The Many
WicksterThe Many
asked in SB8200
sb8200 Losing Power and ethernet port light is on

So about once a day now out SB8200 modem loses all lights on the front, not even the power light is on.  We unplug and plug it back into the wall outlet and it refreshes, but sometimes only for a few hours, sometimes for a day.We did do a full reset 2 days ago to see if that would fix the issues, but it is still losing all 4 lights in the front. Though the network cable lights in the back are still on.Any thoughts on what is going on with this unit?

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Guardians of the Gateways
10 days ago
C
The Many
Cushta69The Many
asked in SB8200
Unable to login the GUi webportal on SB8200

I have a SB8200 and have tried:admin & PW.admin & last 8 of S/N.cusadmin & password.cusadmin & last 8.Also all variations with no pw just enter (“blank”).Nothing works!

1
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Rockstar!
12 days ago
P
The Many
PilkyThe Many
asked in SB8200
SB8200 not providing internet

I bought the SB8200 around March or so and have connected it without it actually providing the internet so I had to borrow a modem in the mean time. I have contacted and had the ISP who have come out multiple times without coming to any conclusion other than that modem is the problem. Is there any reason for this? Is there an easy and clear way to troubleshoot other than just restarting?

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Guardians of the Gateways
12 days ago
J
The Many
juancp2024The Many
asked in SB8200
arris surfboard sb8200 can't reach the 800mbps using astound internet services just 340mbps

I bought the arris sb8200 a while ago, is a docsis 3.1, I also had been using astound internet “previous called RCN” for a while, I really need the 800mbps but my download speed won’t pass the 340 on wifi and 380 wired, my tplink router also can reach the 1gb and I am using the 5ghz channel, Astound support told me that they are not able to trobleshout the modem because is not one of the modem. I reset, hard reset etc and nothing , I am not sure if there is a firmware update and how to do it. Thanks again

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Guardians of the Gateways
12 days ago
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The Many
ToyrunnerThe Many
asked in SB8200
Second port is not working on SB8200v3

I have my new SB8200v3 modem and I noticed there are two ports only. The top port is no problem, but does the bottom port even work? And if it does, how do you get it to work and what can it do?

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Guardians of the Gateways
12 days ago
Y
The Many
ybdewitThe Many
asked in SB8200
SB8200 loses connectivity multiple times a day

SB8200v3S/N: {Edit:personal information}Loses connectivity daily. Have a bad modem. Need a replacement.

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Guardians of the Gateways
14 days ago
J
The Many
JAXONThe Many
posted in SB8200
SB8200 Cable Connection physically too small to fit my cable.

SB8200v2 cable connector/nipple is smaller than the old Arris Modem it replaced. therefore, my cable is too large and will not screw on the new 8200. is there an adapter for the cable? is this a new standard? do I have a foreign version of the SB8200? please help.

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J
The Many
20 days ago
K
The Many
KestrelThe Many
asked in SB8200
SB8200 (COX) drops internet briefly

Hello - I have an SB8200 running on Cox. We keep getting booted from the internet for short periods of time (10-30 seconds) at random times of the day. Cox has tested everything on their end and says there is no issue they can see. This is a privately owned modem, so they are unwilling to troubleshoot any further.  I pulled the SNR data and have attached the Downstream Bonded and Upstream Bonded readouts: The upstream numbers don’t seem to fall in the range specified in the “Cable Signal Levels” document https://arris.my.salesforce-sites.com/consumers/articles/General_FAQs/SB8200-Cable-Signal-Levels Is there anything else I can do to troubleshoot on my end, or anything I can take to Cox to get them to come out?  Thanks so much!

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Guardians of the Gateways
21 days ago
M
The Many
msteinkeThe Many
asked in SB8200
what is the upload speed capability of SB8200 modem

I seem to be finding mixed answers to this question.  So i am wondering what is the official upload speed of the Arris SB8200?

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Guardians of the Gateways
22 days ago
B
The Many
batai341The Many
asked in SB8200
SB8200 Running Hot

My SB8200 is running hot.  It is not too hot to touch, but pretty hot.  I tried going to Arris.com/consumersupport but it leads back to here!

1
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Guardians of the Gateways
22 days ago
W
The Many
Witherdfoxy477The Many
asked in SB8200
Why can I not log into my SB8200?

I cannot log into my SB8200 with using the following credentials, USERNAME: AdminPASSWORD: password USERNAME: adminPASSWORD: password USERNAME: AdminPASSWORD: (last 8 digits of serial number)  USERNAME: adminPASSWORD: (last 8 digits of serial number) My ISP is spectrum

1
N
Rockstar!
23 days ago
K
The Many
KenjaeThe Many
asked in SB8200
wsp button

How do I hook up my range extender ?

1
N
Rockstar!
23 days ago
D
The Many
DAmundsonThe Many
asked in SB8200
SB8200 fails to connect immediately after power cycle, continued

My SB8200 will not work immediately after a power cycle.    It must be left unplugged for 15-20 minutes before attempting to reconnect.   The modem is noticeably warm when unplugged, and cold (cool) 15 minutes later.  This problem is very repeatable.   I’ve never had it connect immediately after power-down or reset in over 20 attempts over the last 3 months. Other than this one issue, the modem works fine.   What circumstances would create this behavior?  I need someone to explain to me why this problem is not a hardware issue…When plugged back in immediately, the modem will get to the point where the top three lights are solid green but the bottom one is blinking green.    It will stay like this for 2 or 3 minutes (I’ve not timed it) before resetting.   The start-up sequence repeats, ending with the same condition (top 3 solid green, bottom one blinking green).   This repeats for at least an hour (that’s the longest I’ve given it).I’ve been on the phone with Arris support 5 times and

1
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Guardians of the Gateways
25 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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Guardians of the Gateways
1 month ago
J
The Many
jenniferjeanThe Many
asked in SB8200
No internet on SB8200

My old modem and router were both functional (slow and outdated) before purchasing and installing the new Sb8200.  Now I spent a few hours online with my internet provider and still have no internet with the sb8200.  My internet provider tried everything they could to get it to function, now they tell me I’ll have to have a tech look at it and if the problem is on my end there will be charges.  It’s obviously on my end, everything was fine (slow but functional) before I installed the sb8200.  What else can I try to make it work?

1
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Guardians of the Gateways
1 month ago
S
The Many
steaThe Many
asked in SB8200
SB8200 use for Taiwan?

Dear the Reader or the customer serviceI just buy the SB8200 from Amazon and want to use in TaiwanBut I have a question about this pic belowSo I want to ask if I have the coax cable with the internetCan it use on the SB8200 Coaxial Cable jack?Your prompt reply would be greatly appreciated.

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Guardians of the Gateways
1 month 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
1 month 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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Guardians of the Gateways
1 month ago
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