Modems

I’ve had my self-installed SB6141 for several years.  Up till now has never been a problem.  However I am now seeing my Internet access interrupted roughly once per day.  Installed a new router thinking the problem was Wifi related but now I am not sure.  Router manufacturer is pointing finger at cable modem. Have already had ISP at house, they replaced cable from their box to the cable modem. When incident happens my router indicates trouble reaching the Internet - some devices have an internet connection, some do not.  I power cycle the router and Internet comes back up for all devices. All lights on cable modem are normal. Any suggestions?  Thanks - Richard in Allentown, PA - RCN customer, “up to 50 Mbps” services with actual speed test 146.8 Mbps download / 18.2 Mbps upload

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

My SB6109 keeps loosing connection about every 2 days. I have to reboot it in order to gain wifi connection back to the router. 

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? 

Does anyone know if my model modem have vpn server access?  I don’t see mention of this model in the forums.  thank you 

I am in need of some replacement power supplies for SB6190. I am seeking the best quality for the best price. Oem would be ideal.

I have purchased a arris surfboard S33.  When I set it up the green light keeps flashing and my computer won’t work? 

Xfinity just upgraded me to 800 Mbps (in return for a $10/month fee increase!).  They also informed me, however, that my existing equipment would NOT support such an increase.  In response, I bought and installed an S33, plus a Linksys AC1200, using their 2.5 Gbps LAN ports.  Although the modem seems to be working well, the one fly in the ointment, so to speak, is that, although the LED flashes orange, and then green, when the modem powers up, instead of showing blue, the LED seems to go blank!  In spite of this, however, my internet speed has increased well above the 800 Mbps mark, ranging from 900 to about 912 Mbps, and seems to be working smoothly!  I do know that the area where I live is on the outer fringes of their network in this area.  Could that have something to do with the LED not showing blue?  In any event, how should I proceed?  Thanks in advance for any advice or assistance!

I am helping my mother-in-law troubleshoot her Touchstone CM8200A modem that is not reaching the correct speeds from the ISP. The technician was able to achieve 1G on the line, but only 92 Mbps at the modem. The cable company is stating that she should purchase a new modem, but in the past I have found improvement with updated firmware, but apparently this is no longer allowed with DOCSIS. Are there any suggestions before this modem gets trashed.

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

White peanut style Surfboard has no lights of any kind. I recently swapped the UPS uninterrupted power supply it is plugged in to but all other devices on the UPS are working and I have tried multiple inputs on the UPS. Anything short of replacing it I might try? If not, what would be the nearest new model replacement?  And it’s connected to a 10 GB switch - does that go before or after the Surfboard in line (just checking - I have it after)?

How do i change my network name??

ATT says that their modem, to which a phone line is attached, does not havarris doesn’t haveit, who does?  Please give their contac ine a battery backup.  Is this true? Does Arris have a battery backup for the modem?  If so, what is it?  If so, please give their contact info.  Thank you.  

How can i secure my network? The app Fing says my network allows unchecked UPnP and NAT-PMP access and that I'm directly connected to a public network. How can I secure it so no one can access my wifi? 

Last month, I switched ISPs to Xfinity with an 800Mbps plan, but continue to use the same s33.  I have noticed my download speed will occasionally drops to be around100Mbps, independent of whether I use the 1Gitabit or 2.5Gigabit port.  using my ORBI router statistics, I can see the WAN port drops to 100M/Full down from 1000M/Full.  To get my speed back, I have to reconnect my patch cable (CAT6) from the modem to the router to the opposite port on the modem (1 vs. 2.5Gigabit). Sometimes I have to reboot the modem as well.   Unfortunately, I don’t know exactly when this change happens so I can’t check the event logs at that specific moment. I have seen this with my previous ISP as well, so I don’t think this is specific to the ISP.  So what would cause this?  How can I resolve?While investigating this issue, I did look at the event log to see if I can find anything unusual.  Two things I have found, but may or may not be related.(edit: CM-MAC information removed)

Internet is working and all hard wired devices have connection but wireless devices cannot connect to internet… do I need to replace the modem? 

How  do I turn off the WIFI on my ARRIS modem/router, provided by ATMC, so I can plug in a Netgear Orbi MESH system?    

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? 

Hi all,We got a Surfboard 6190 modem and it’s hard for us to tell if the issues are from our ISP or modem, but our ISP thinks it’s our modem now. (There were also some repairs they needed to do on their end with the wires). But we are now still having severely reduced connection speeds. Paying for 400 mbps, getting about 20, and often it completely dies. The event log for our modem has constant inputs, attached at bottom. Anyone have any idea what’s going on and what we can do?Thanks much,Dust (edit: CM-MAC information removed)Wed Jan 11 17:36:38 2023 4 Service Change Response rejected - Invalid transaction ID;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0; Wed Jan 11 17:36:43 2023 5 RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0; Wed Jan 11 17:37:00 2023 5

Connecting S33 to either my RAX50 (Gbe) router or GS110MX 10G Switch fails, but it connects fine to my PC.  Any ideas why?  Using Cat 8

I used to be able to programmatically reboot my Motorola Surfboard SB6120 cable modem simply by opening http://192.168.100.1/reset.htm.   The page is now missing and I am no longer able to find any reboot/reset page available via web browser.  Some instructions indicate that a reset button is available on the Configuration page, but the button is not there.Does anyone know how to programmatically reboot the Motorola Surfboard SB6120?

I find that my 1.2 Gb speed from Xfinity periodically slows down from about 900 Mbs to about 100 Mbs.  This is remedied by restarting the modem by unplugging it for about a minute.  Is there a way to schedule a periodic restart of the S33 modem via its app?   I am thinking that, if not, I could connect it to a smart plug and schedule it to periodically turn off and on in the middle of the night.Also how often should the modem be restarted for optimum performance?

Where is the sb8200 manual?