SB8200

So i have a issue. Im on 3.1 dosis mode with my provider and they keep telling me to update my modem which is the sb8200. Or contact the company about it which is why im here. I get 1 blue light when is the downstream. And the upstream is green which makes no sense . I pay for a gig down and 105 up. Im only getting 60 upload. I could buy another one to see what happens its been a few year but yea

My SB8200 is connecting to my new router, but is not giving it a new IP address.  How do I activate the external router provision on the modem?

I was on wih Xfinity tech support today because for quite a while I am not getting anywhere near my availble speed which should be around 1 GB. I get anywhere from 300-600 Mbs.  They are telling me i need to update the firmware on my modem. Its not even 2 ½ years old and I bought this model specificially to meet my needs for gigibit speeds. Additiaonlly there doesnt seem to be an available firmware update. So my questions are;1. should I need to update firmware for a device that should already have gig speed?2. Is xfinity blowing smoke?3. Is there firware available that I am not seeing?Thanks 

My ISP claims that its service disruption is limited to a couple of events between December, 2022 and January, 2023.  My experience of problems with internet connections is far more frequent than that.The event log available on the modem’s web page is overwriting more recent events, but there is a persistent error that repeats, in conjunction with other error(4) messages:"SW upgrade Failed after download - Incompatible SW file"  When this happens, my internet connection is lost, and often my Arris Mesh network becomes unavailable as well.  I’ve talked to my ISP technical representatives about this.  They have no interest at all in helping figure what might be going on between the modem and the local whole house wifi.  So much for the event log being important to the ISP.  That might be true if the ISP is supporting this model of modem and renting it out.Question 1:  If I interpret this event as one where Ar

I Installed a new SB8200 on my network today.  Everything is fine with the internet.  It’s nice and fast.  However, I have 3 cable boxes.  We’re not talking smart TVs.  It’s cable boxes connected with coax.  The picture on all 3 is super choppy and pixelated ever since installing the cable modem. Seems like there should be no connection, since the TVs are not reliant on the internet for their programming.  However, I did some testing.  The second I turn off the SB8200, the cable picture clears up.  As soon as I plug the modem back in, the picture on all 3 pixelates again.  There is no question that the cable modem is causing interference on my cable TV picture.is there any way to fix this?  Other than returning my new modem and putting my old modem back in play? 

Should the RECEIVE led light ideally always be blue or is it normal to sometimes be green? Sometimes it changes to green meaning it’s in DOCSIS 3.0, and stays there until i power cycle the modem. Is this less than ideal? Does this indicate a problem with the coaxial line

Why can't I access sb8200 web management using wifi. Is it because my wifi network is 192.168. 0.n and the modem address is 192.168. 100.1?If so, anyway to assign the modem an address in my wifi subnet? 

I activated my Arris SB8200 on Xfinity yesterday. It's not updating the firmware. I've restarted the modem at least 6 times. My Software Version is      D31CM-PEREGRINE-1.1.1.0-GA-11-NOSH. The current version seems to be AB01.02.053.05_051921_193.0A.NSH. Why isn't it updating? I also noticed there’s no Advanced tab in the menu bar.   

I have been trying, unsuccessfully, to get to the admin page. I did a factory reset, and the instructions say to enter the last 8 digits of the serial number as the password, however, the first two of the eight are letters and not digits. Does this mean I’m not allowed to access the admin page? 

Where is the sb8200 manual? 

I Purchased an SB8200. So like any modem I connect the  coaxial cable and power it up. The modem starts to load and  all lights go on.  Then shutsdown and starts the process over again. Disconnect the coaxial and all the lights stay green and steady. Any idea what going on? My ISP is spectrum. I have not contacted them since i cannot get it started up. 

After an outage in my town my internet stop working. Contacted my ISP and they told me in their end everything looked good. My modem used to display a green steady light for power, a steady blue for receive, another steady blue for send and a green for online. Now the order is green, blue, green, and green.I have no internet access after multiple tries to reset, disconnect the power source and rebooting on ISP side. What else can I do to fix this?

I just purchased the SB8200.  I can access the page listed on the quickstart guide as: 192.168.100.1 which gives me access to view “status” of the modem, however, I cannot access the device management page that will allow me to change settings.I’ve activated with my ISP and this service will be a secondary internet and I need to set the modem to bridge mode. I’ve connected a cable directly to the modem (not going through my router to get to it) so I should be able to get to this web page. I’ve also tried 192.168.0.1 but it brings up the same status page as did the other IP.  Is there some secret sauce I’m missing on this ?EDIT to add:  The IP address on the modem is the WAN IP so when I connect my computer it I’m getting a 42.x.x.x IP versus a 192.x.x.x IP

I have a new SB8200 on Optimum 300 Mb cable internet. The modem is connected directly to the Optimum-provided cable in house, about a 10ft run to outdoor cable connection.There are no other devices bridging the cable. Internet only.In looking at the Downstream Bonded Channels page on the webmanager, I see many thousands of Corrected & Uncorrectable errors on every channel. Generally 4000- 5,500 on each. Ch 33 shows 9,130,017 Corrected! All channels are locked and show power of between 8.9dBmV to 11.8.I do not notice any dropouts in service (streaming audio and video services) and my service for web seems steady, although not blazing. This is many more errors than I’ve seen when others post. Is there a service problem? 

Bought an SB8200 cable modem from Amazon to replace an old SB6141.  Package appeared to be sealed and modem was wrapped in plastic.  Activated successfully with my Xfinity account.  Functionally, it seems to be okay.  Speedtest.net reports no change in speed; ~80Mbps down and 5 up.  My Xfinity service is supposed to be 400/5 and I was hoping that a newer cable modem would bump my speed up.However that’s not why I’m posting this.I cannot access the Web Manager page at the default IP of 192.168.100.1.  The previous SB6141 had the same address and I had no problems viewing the page.I’m using Firefox 91.13.0esr (64 bit) but have also tried Chrome.  Tried both http:// and https:// and nothing.  I’ve tried the usual power off-power on routine with no change.  I CAN ping 192.168.100.1 and see it.  Remove the ethernet cable from the SB8200

I can’t get past first step (select device) on the app. Click next and nothing happens.

I’ve had this modem for a couple years with Xfinity and so far no issues to report.  Recently, I’ve been getting emails from Xfinity that I need to upgrade my modem to match the speeds I have.  I’m on a 1200 Mbps service plan. I thought that was strange as the box this modem comes in states download speeds up to 10Gbps.  Xfinity tells me that this modem only supports 1Gbps.  I looked on Arris’s website and now I see that the information appears to have changed.  What am I missing?  Does this modem not support above 1Gbps now?  I bought this thinking I was future proofing but it appears that I was wrong.  Appreciate the help correcting my thinking.

I recently install and SB 8200 Modem and every devise that I have had no problem getting internet connectivity on every device except my Honeywell Gateway.  I use a Netgear switch.Working with the Honeywell team they are convinced that there is something preventing their gateway from connecting to the modem.  They sent me the email below in an attempt to do some trouble shooting:I am sending you some network recommendations that might cause that your thermostat can't connect to your home network. You may your ISP (Internet Service Provider) and check the next settings. 2.4Ghz, or 5GHz network. The TH9585WF will only connect to the 2.4GHz.  Enterprise Business Networks requiring RAS, Guest networks, or networks requiring Web Portal authentication are not supported. Recom

SB8200 hardware version 4 is not attempting to update firmware after activating with Spectrum. I need the update so that I can enable link aggregation.  I used the Spectrum live chat feature and the agent told me they won't push an update because it's 3rd party hardware even though it's on their approved device list. I tried a reset to see if that would make a difference, but no. I'm including a copy of the event log from after the reset, in case that is any help.  

Just installed an SB 8200 and I want to make sure I have the maximum network security that this device will supply. How do I check/adjust the security settings? 

if it is not is it a problem?when or if will Comcast usual do an update?I just got it in today.. so far so good.I did have problems with the default login 3 or 4 tries and it finally worked with the last 8 digits of the serial number. Information Standard Specification Compliant Docsis 3.1 Hardware Version 6 Software Version AB01.02.053.05_051921_193.0A.NSH

My SB8200 modem is only connecting with Docsys 3.0 (Green) on upstream.  The downstream is blue however.  Any thoughts on what is causing this?

Comcast said the first time our netgear modem may be too old, even though it was a docsis 3.1.  We got a motorola a few days later and had the same issues.They came back a few weeks later and replaced the old rg58 drop (they should have done that a long time ago)  and ran a new cable from the pole all the way to the modem outlet. Signal improved, dropouts slightly improved but still goes out for minutes to an hour. A week later they came back again, replaced a port on the pole and adjusted the DB down a little. But didn’t make any difference. On the comcast board someone said that motorola may have a firmware issue causing all the errors on the OFDM channel. So we got the SB8200 and this one too is having dropouts and the log is full of errors. Comcast says everything looks fine on their end.  It’s doubtful we had 3 bad modems in a row. All these errors are just from just 2 hours of uptime and we are loosing connection every 5 minutes now.  

Below is the Status report and Event Log for new install of an SB8200 Modem with the Surfboard 2 tower wifi 6 mesh system added on.I’ve had problems with weak or briefly dropping internet along with event log timeouts with old Netgear modem for a long time also.can Someone interpret this and see if this would indicate a problem with the 35 year old coaxial cable underground from old Comcast now Xfinity ?ConnectionThe status listed show the connection state of the cable modem. They are used by your service provider to evaluate the operation of the cable modem.Startup ProcedureProcedure     Status     CommentAcquire Downstream Channel     423000000 Hz     LockedConnectivity State     OK     OperationalBoot State     OK     OperationalConfiguration File     OK        Security     Enabled     BPI+DOCSIS Network Access Enabled        Allowed     Downstream Bonded ChannelsChannel ID     L

I have a SB8200 surfboard modem.  Trying to connect my LG tv to the wifi but do not know how to find the password.  I’ve looked on the bottom of the modem and tried everything there but nothing works.  The other thing that is strange is that the tv and my computer call the a MOTOF512...and not an Arris surfboard.  Maybe Motorola used to own Arris or something.  I don’t know.  Any assistance here would be greatly appreciated!