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SB8200

SB8200

DOCSIS® 3.1 Cable Modem

466 Topics
1,204 Replies

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466 Topics

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RokufanThe Many

asked in SB8200

Modem Question

Hi everybody. Just hooked up my Arris SB8200 and now some of my Roku channels won’t load. Any ideas why?

Curly815The Many

Hey everyone. I noticed my receive is light not on and thr other 3 are like a yellowish green. The internet still works but reading the manual says all the lights "should" be on. Anyone got any insight? Thanks!

1187

1 year ago

caseyo2112The Many

asked in SB8200

bridge mode on SB8200

I have a new SB8200 on a new install. I can access the internet fine when wired to one of the SB8200 ports. When i connect my router’s WAN port to it, no device on my router gets traffic. There are no settings for bridge mode that I can find in the web UI of the SB8200. How can I get my router to work? It IS in DHCP mode for its WAN port.

18622

1 year ago

EjwolffThe Many

asked in SB8200

Xfinity serial number already exist issue

I have recently purchased a SURFboard SB8200 and was working thru the activation with Xfinity. During the activation process the agent said they received an error code that the serial number already exists. Error code [] [].(!{2}!) This unit was brand new. How do I get around this?

1151

1 year ago

aidtopiaThe Many

asked in SB8200

SB8200 System Time is wrong

My SB8200 had been working fine for more than a year and a half, but this morning, it went catatonic. Front panel lights were all still good, but the (separate) router could no longer see it. The router itself seemed fine. Rebooting the router made no difference. Rebooting the modem re-established the connection and everything was fine. About an hour later, the modem went catatonic again. Another reboot, and everything was fine. This time I tried to log into the modem to see if there was any useful information in the event log. It told me my username or password was incorrect, which is highly unlikely since I use a password manager. After multiple attempts to log in, I had to use the last 8 characters of the serial number as the password. That worked, and I’ve reset the password. The event log had no useful information, but I noticed the time of the most recent event was more than an hour earlier--before the most recent reboot! I checked the status page, and it says the syste

6765

1 year ago

cwickleinThe Many

asked in SB8200

SB8200 flips from bridge to gateway when cable fails

Greetings and salutations — I have two Arris modems — an SB8200 with WOW/RCN/Astound service and a T25 with Comcast/Xfinity service connected to a router. The router has multi-pathing enabled and balances remote destination addresses across the two WAN connections. Under normal circumstances, this works well. If Comcast’s service fails, the T25 blinks out, the router removes it as a routing option, and life goes on. BUT, if WOW service goes out, the SB8200 doesn’t blink out with it — instead it switches from being a bridge to WOW’s network to being a gateway to nowhere. It leases my router a new address from its built-in pool and carries on. This is an incredibly annoying behavior because it results in external addresses being balanced between the remaining WAN connection (Comcast) and a black hole (WOW.) Devices on my internal network can get to e.g. ibm.com but not e.g. google.com. Is there a way to force the SB8200 to function as a bridge when it looses signal? Is this a ca

Dean VinkThe Many

So I am only getting the download link to light up setting up this modem on Xfinity no upload and no internet this is out of box have tried reboot a few times

1621

1 year ago

densc8The Many

asked in SB8200

Do I have a SB8200 or SB6141?

Bought what says SB8200 on the box at BestBuy. Registered modem with SURFBoard Central by scanning the S/N during modem activation. Says in the device here it’s a SB6141?

761

1 year ago

lindjohnsonThe Many

asked in SB8200

how to get updates for Arris modem

Wi-Fi will drop several times a day on phone at home. I was told that it was because my Arris modem hadn’t been updated. It is 2 years old. Does it update automatically or do I have to do it?

7802

1 year ago

kmon43The Many

asked in SB8200

SB8200 lights just keep blinking green

Lights keep blinking green and cycling from 1 to all 4 but no internet connection. Tried unplugging. Tried the reset button.

TDKaiserThe Many

The literature in the box sent me to this site find the user guide. I don’t see it anywere.

10801

1 year ago

JoycegThe Many

asked in SB8200

invalid password for wifi

After an apple security update this morning, neither my iPhone or my MacBook can sign on to the household’s Wi-Fi. I am getting “invalid password” message. My Amazon Alexis is still connected. Do I need to change the passcode/password and how do I do that. I have a SB8200 modem with Linksys router.

921

1 year ago

T_wilsonThe Many

asked in SB8200

SB8200 and Synology NAS

I am attempting to install an Synology NAS on my system. I can see the NAS on my computer, but the NAS unit (DS923+) cant access the internet. It's like the router is blocking it somehow. No problems with accessing the internet on the computer or via wifi. I am not well versed on this NAS stuff so any help would be great.

9811

1 year ago

dtmst6The Many

asked in SB8200

internet constantly is out

We have an Arris modem with an Eero Router. Our internet speeds when we are able to get on is fantastic. We hare constantly having problems with the internet going out. We had Xfinity out to troubleshoot. They said on their end everything is working 100% fine. They said just make sure your software in the modem is up to date. The Eero is up to date. Ive been trying to log into the Arris to do the same, and I can’t access it. The message “check again after 5 minutes invalid login and password”. I’m fairly capable to trouble shoot this. I’m just worried about hackers since it’s not a secure site. Anyone else have this issue?

2321

1 year ago

jaxelsonThe Many

asked in SB8200

How to access MAC filter to allow device access to the internet SB8200 modem

I have a SB8200 modem that I’m trying to access the MAC filter to add a MAC ID to give my thermostat access to the internet to control the thermostat from my phone. Honeywell and my internet provider claim they can’t help me. How do I find access the MAC filtering in my modem?

1653

1 year ago

the_aggie_kidThe Many

asked in SB8200

SB8200 All lights flashing

The power light will briefly turn on and then all other lights will flash together then all lights will go out. The modem will continue to do this every few seconds. Is this a hardware or ISP issue?

11212

1 year ago

Redondo3763The Many

asked in SB8200

SB8200- Intermittent internet connection

Have had SB8200 for a year - has worked perfect until recently, when it drops the connection multiple times per day - and all the front panel lights say everything is fine. SB8200 in warranty, Arris support checked everything and found all was good with the incoming signal. This was after asking me to have the ISP to send a re-activation signal and monitor for 48 hours (which I did - any experienced more dropouts). But they now want my ISP to come out and install a test modem for 24 hours - at cost $$$ to me, of course. I don’t know why, we experienced a dropout while on the support call. Clearly support does not have direction to actually help customers, but rather keep trying to point the finger somewhere else. Any way to just get a replacement?

1631

1 year ago

jlundsgaardThe Many

asked in SB8200

SB8200 reboots every 10 minutes when coxial isn't plugged in.

Testing the SB200 when only power and ethernet connected. Unit reboots after 10 minutes. Is this normal behavior when no coxial is connected? This is my second purchased one. Many thanks.

412

1 year ago

LAMBEAUXThe Many

asked in SB8200

Sb8200 V6 Setup with Spectrum, everthing look ok?

Ch 2 showing Not locked, all levels look good.Had issues with ISP, replaced the line from the drop and tap, and had to call the fcc to actually have them come out and fix the node, just want to make sure everything looks good. currently the line has 2 splitters, just wondering if the node adjustment could have affected the configuration with my line.

1894

1 year ago

CraigThe Many

asked in SB8200

After Power outage, internet connection drops intermittently on SB8200

We had a brief power outage to our home over night. When trying to connect to the internet in the morning, we had no connection, or intermittent connections. I rebooted the SP8200 and also did a reset. I contacted our provider, Breezeline, who said there were no outages in the area. They trying to reset the connect from their end twice. The connection would come back briefly and then fail. Finally the provider eventually said that it was the modem, and that I had to contact the manufacturer, Arris, to determine the problem. This is where we stand at the moment.

3478

1 year ago

EheikThe Many

asked in SB8200

Xbox disconnects my router when wired to modem.

I have an Arris SB8200 and if I wire my Xbox directly to my modem my router stops receiving internet so I cannot get wifi. I've done a reset and unplugged everything in every combination i can. When I get my router to work as soon as I turn on my Xbox my router disconnects and I have to reboot everything. I cannot get both to work at the same time while connected to the modem. Does anyone have ideas or solutions? I just would prefer to have my Xbox wired to my modem rather than through my router if possible. It does work if I hook it up through the router my connection just isn't as good.

1421

1 year ago

apfroThe Many

asked in SB8200

How to close an open port

Security search revealed vulnerability due to open port -- how do I close it?

712

1 year ago

lcdrdanThe Many

asked in SB8200

Activating the new modem

I just purchased an ARRIS SB8200 Surf Board modem and having trouble activating. To activate, I have two choices….Scan the QR Code or do it manually. There is no QR Code and when I try manually...it does not recognize my wi-fi password.Is there a way to get the QR Code for the SB8200?

F stancliffThe Many

Need instructions on sb 8200

1441

1 year ago

bellbuoysThe Many

asked in SB8200

Second ethernet port on ARRIS SB8200

I just replaced the Xfinity equipment with my own ARRIS SB8200 and a Ubiquity Dream Machine SE router that feeds data lines wired in my home, with 5 end point mesh devices. No problem transitioning all my end use equipment over to one of the 4 networks I set up in the Dream Machine WITH ONE EXCEPTION - SONOS. The more I read, and I am not a techie, I see that there are incompatibility issues between Ubiquity and Sonos, so my desired solution is to connect a conventional wireless router to the second ethernet port on my SB8200, creating a wireless network apart from going through Ubiquity, totally dedicated to Sonos. Will this work? Seems it should if the second ethernet port has the same functionality as the first. Thanks in advance for any help here!

4412

1 year ago

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