SBG8300

This power adapter came from an earlier Arris gateway modem. Is it compatible with Arris SBG8300? 

My SBG8300 is generally reliable and provides close to the gigabit service I’m paying Xfinity for. However, on random occasions between 2 and 6 days, the WAN speed will suddenly plummet to what appears to be a few hundred (yes, hundred) baud. I can get intermittent pings to go through and sometimes even small chunks of http data, but that’s about it. Not even able to load a full web page before timeouts occur.Logging into the Arris web interface and selecting Restart is sufficient to correct the issue (as is a power cycle) - for a few days, until it happens again. It usually happens overnight - the WAN connection is fine when I go to bed but it’s often essentially nonexistent when I get up in the morning. Sometimes this is every couple days, sometimes it’s good for up to six days. I think once it may even have lasted for nearly two weeks, but that was unusual.There are no splitters or any other such devices between the modem and the feed from Xf

I have Xfinity Comcast cable internet service.  I am provisioned 1000 Mbps download / 20 Mbps Up.When I run speedtest either from Xfinity or speedtest.net, the test says I roughly get around 300MB download give or take. I had Xfinity come out because I didnt think I was getting the 1000 MBPS service.  They tested from the Coaxial cable prior to the cable modem a 1000 MBPS service with their meter equipment.  They tested coming from any of the LAN ports with their meter equipment and it shows getting 1000 MBPS service.  But for some reason when my ethernet cable is plugged into my PC or laptop from any of the cable modem LAN ports, I am getting approx 300 MB.  Xfinity even hooked up their laptop into one of the LAN ports and they also saw an approx 300 MB download speed too.Is the SBG8300 throttling down the internet speed when using the LAN Ports?  When I use the WIFI 2.5 and 5, my speeds are what they should be.  The 5 GHZ is showing

I have a GATEWAY.  I have not been able to open the page suggested in the manual.  I need to change the long password and user name.

I just replaced my xfinity wifi modem with the SBG8300. Contacted xfinity and they did all they could on their end. I ha e wifi but no internet connection. What do I need to do?

My SBG 8300 was working perfect. One day I did not have any service and the front panel was black, no lights. I unplugged the modem and repowered it on, only 5 quick flashes were seen, nothing else. does anyone have any ideas what is going on?

I currently have a SBG8300  and we purchased a TP-Link Deco XE75 AXE5400 to use in our new home.  I needed to extend the range of our WiFi to reach my detached garage.When Suddenlink/Optimum came to install the cable they told me that my Surfboard SBG8300 wouldn’t work with the TP-Link system.  I have read somewhere that I can use the SBG8300 as a modem only, but I’m wondering if there are other issues.  Should I just purchase a modem only?  Are there security issues with using the surfboard as a modem only?Any thoughts or suggestions are welcomed.  

Team, Good MoringAm I missing somethingThis Arris SGB8300 just refuses to connect. Can someone help with some info, I am lost.

Xfinity is telling me my router needs updating because my speeds are slow. Where can I figure out how to do this?

I set up port forwarding for my AirTV and Camera security system. All works fine for a day or so and then stops working. I was rebooting my router to resolve this issue but found that simply turning port forwarding off and then back on solves the problem. It is kind of frustrating that I need to do this on a regular basis. Is this a know issue? Is there a fix on the way? Is there a work around? Any help would be appreciated.

I replaced a sbg8300 that was killed by a power surge a month ago with another sbg8300. I got it up and running, everything was working great. But for the last 2 days all of my devices suddenly lose connectivity to the wifi.When I try to reconnect, the password that was previously saved is gone. I type it in and receive a message saying that the password is incorrect. I know that I'm typing it correctly.I've connected to the router with my laptop via Ethernet cord and signed into the router settings and verified that not only is it the right password, but according to the router both networks are working.This keeps happening and I'm at a loss. My old sbg8300 didn't do this.

We have a SBG8300.  When logging into Cisco AnyConnect, It is saying “The VPN connection to the selected secure gateway requires a routable IPv4 physical adapter address.  Please move to an IPv4 network and retry the connection or select a different secure gateway.” Not sure if it matters, but this a government laptop. We have another home laptop that also logs into a VPN, but it is commercial company VPN, and with no issues. Suggestions?

Successfully activated comcast/xfinity. Ethernet connect working fine. Added my own password successfully. Cannot access wifi on this laptop, where set up was done. Cannot access wifi on my smartphone using my own password or the network password. Reboot of SBG8300 B261 did not fix. What now?

I can’t seem to manage any devices from the web browser, nor can I add devices to profiles on the app on IOS. 

Hello, I just got a new SBG8300, 2.4G wifi appeared at the beginning, but after changing the SSID and password, it disappeared. I have tried General FAQs: SBG8300: Changing the Wi-Fi Channel (salesforce-sites.com) to change channel to 1,6,11, none works. I did setup 2.4G Security Mode as “Open”,  didn’t work.  Reset didn’t work either.Also, my “Wi-Fi Spectrum Analyzer” doesn’t show any results after scanning, both 2.4G and 5G options. 5G is working very well, just no 2.4G at all. I have saw a few topics here about this 2.4G problem, I guess this might be a defect, not really a channel conflict issue,  do we have a final solution for it now? Thanks!

Sparklight tested everything and said was good on their end and that it is our modem.  Anyone have suggestions?

I got a Arris SBG8300 recently and ever since I have been unable to access some websites and mobile apps (like What’sApp) on ethernet and wifi. Some websites are just ridiculously slow. Speedtest.net does not even work. I cannot sync my clock in Windows to any time servers (tried microsoft, google, ntp.org, nist.gov). My ISP says there’s nothing wrong with my connection. I’ve tried updating DNS servers and still having the problem. When I switch to my sibling’s wifi (same isp, different modem) all of these things work instantly and quickly.Not sure what else to do or what to check.

I recently switched my home Modem/Router to the SBG8300 and upgradED my xFinity internet to 800 MBPS. I am observing that the max WiFi speed is around 450-550 MBPS range. Does anyone know if this is what I should expect or if this an xFinity issue or a Modem/Router issue? How do I go about troubleshooting this?

Please provide me with a link of the battery back up that I can buy. Where does the battery back up need to be connected to?

I am getting this error code when trying to set up my app with the SBG8300.  I have not changed the network information as this is a new device — This is the first time trying to set up. Device is receiving and transmitting as all devices in the home are connected using the temporary SSID on the label.  What is the issue?

Is there a firmware update (yes, I know the ISP, (that refuses to support me, or keep things up to date) pushes it) to enable Ethernet WAN on the DG3450 (SBG8300 has it, and it’s the same thing) 

I forgot my password on the app and there’s no forgot password link 

My sbg8300 will run fine for 5 or 6 day or sometimes only 1 or 2 days and then just randomly powers off completely ( no lights) I unplug it lights come back on it reboots and connects … sometimes for only a couple of minutes then powers back off other times it stays on for days with no issues… I have changed the power cord.tried other receptacles… I have done a factory reset. I can find no pattern … it is in an open environment so doesn’t appear to be overheating related ….warm to touch but not hot. Please help. Thanks

SBG8300 shuts off every few hours

I try to connect to my 2.4 g wifi and it says disabled but when I go into my surfboard it’s enabled and I still can’t connect