SBG8300

Was finally able to get my new refurbished SBG8300 to activate with my Optimum service but the WiFi network does not seem to work. None of my devices are able to connect to either 5Ghz or 2.4Ghz networks.When the optimum service finally worked/activated the WiFi did work on my phone for a bit and then I am now no longer able to connect to the 5Ghz WiFi network but can connect to the 2.4Ghz one but without network connectivity/internet.  LAN connected devices all have no issues getting connected to network and accessing the web. Is there something wrong with the WiFi settings or does Optimum also need to activate for the WAN MAC Address as well as the lady only did it for the HFC MAC Address?

ISP is installing internet to my newly constructed house.  I purchased the SBG8300 for Xfinity service.  Instructions require that the ethernet cable connects to my laptop.  I have a MacBook Pro, which has no ethernet ports. Any suggestions? 

I’ve googled this and they tell you to take your mobile device (andriod)  far enough away from the router/ modem to force it to 2.4ghz.  But still during setting up, the WYZE v3 cameras are replying that they cannot connect to the network.  Is there not a way to have this dual band router support my tablet/ phone, etc. at 5ghz and also recognize the cameras on the 2.4ghz band?I also googled this and there are videos to “blend” the 2 networks but I had no success.  It’s was over may pay grade lol.David G.

I am attempting to host a Space Engineers dedicated server to play with my friend. This application by default uses port 27016.Forwarding this port in my modem and using canyouseeme.org I am unable to get the port to report open even after using a variety of different fixes.5I am able to see my server in the LAN section of the server browser but it does not list in the public facing list as it should be if the port was open.I have disabled windows firewall/defender and also Malwarebytes while trying to sort this out.My ISP is xfinity and I already called them to see if there was something weird on their end but they said it is a modem or PC configuration issue.DMZ doesn't work either says my ports are still closed.I feel like I know what I am doing here normally and am very confused. Spent a good amount of time trying different solutions I have found online and have been unable to sort the issue.

Pretty simple:  Using the Surfboard app, showing internet speeds of 450 mbps but shows only 70 mbps on WiFi which is observed on connected devices.  I’m guessing it’s something very simple I’m missing.  Using spectrum.  At my home when I updated to new modem immediately WiFi went to 350 mbps. 

Hello, My SBG8300 is blinking both lights at the same time (fast blue on both) after a factory reset. My MediaCom technician checked everything and seems that my router is the issue.See the attached picture. Is there anything I can do, or is it the end of it?Thanks

I got the SBG8300 a few weeks ago and having some video lagging issues with my laptop. I’m paying for 400Mbps. The laptop has an Intel wireless-AC 9560 Channel Bandwidth of 160MHz on 5GHz. I did SpeedTest from about 30ft from the router. and get about 100Mbps. My iPhone gets 375Mbps from the same spot. I don’t know about the wireless on the iPhone but is this a fair comparison?Does the SBG8300 go to 160 or is 80MHz max?  Would it help if I had a 160MHz router?

I recently upgraded to the SBG8300 router. I have reconnected all my wifi devices for the exception of my Google Mini. It fails to connect via wifi. I have performed a hard reset to the mini, added both 2.4g and 5g as network options,, tried new google mini and spoken to tech support. It worked fine with my old router. I use it as the doorbell chime for my Nest front door camera. Google has no ideas and claims it’s the set up of my SBG8300. Arris tech support can’t find the answer either.

Hello.It seems that my modem is bricked. Everything was working until the connection dropped. One solid blue light appears for the power icon. Browser will not connect to 192.168.0.1 or alternatives. Tried 15s , 30-30-30 method to factory reset, doesn’t work. Power cycling multiple times does nothing as well.Can this be salvaged? Any help would be appreciated.

Xfinity keeps emailing me stating my Arris Surfboard SBG8300 is no longer compatible. We’re supposed to be getting 800 speeds and are getting 500. Someone told me this is because the SBG8300 is known for having a defective puma chipset. Is Arris offering a fix for this? Mine is still under warranty and I did purchase a 4 yr product replacement plan from Best Buy. 

When I try to connect a 2.4 ghz device (smart plug, etc) I either get an incorrect password when trying to connect or it gets connected and then drops.  I know the password is correct.

wifi speed coming from SBG8300 only 5 feet away getting 53mbps on 2.4ghz & 5ghz yet with ethernet hardwired to Orbi the wifi is 890mbps.  

Just bought SBG8300 Modem and Wi-fi in one. It has a Wi-fi cord that plugs from Arris modem to computer.  Now I can't carry my laptop anywhere because it is connected to modem. What can I do?

Do we need to update firmware?  My current firmware is 01.01.137.NCS?

Have a SBG 8300 gateway and I am unable to connect to my work server. Internet connection is fine. I unfortunately have basically no understanding of how this works. My IT person says it’s a xfinity problem, xfinity says it’s a modem problem. Which I believe because I can log on everywhere but home.  

Why does the Surfboard Central app keep saying no network available? But it show all Wi-Fi units online. And can't do a speed test .

Sbg8300 isn't recognizing the 2 play fi devices that worked fine with my previous router. I run the setup routine but they don't show up, have done factory resets on both devices.  Am thinking there may be something in the surfboard setting preventing the discovery of them.  Would appreciate any suggestions or insights. Thanks in advance.

Ethernet. Ports not working there blinking red. Can't connect firestick say connected but no internet. Same thing with Mac computer 

Hello my name is Brendan I’m a Charter Spectrum customer I recently rebooted my SBG8300 status light is indicating firmware download I looked in the app and web portal no prompts for action what should I do any ideas answersThanksBrendan

When I go to Arris Surfboard in the router (SBG8300 btw), I go to parental controls to manage devices, all I get is the option to manage devices (which is enabled) or access type (which is set to allow all) and even when switching these, I still get no option to add and manage a device. Its also keeps giving me bad certificates when using Chrome, Firefox, or Edge where it gives me a risk warning when going to 192.168.0.1 and each one tells me my browser is out of date and not compatible, I dont know if this is the issue causing features to not work or not, but firmware and browsers are all updated. any solution?

Hi there, trying to complete the surfboard app set up for SBG8300 and continuously getting an error. Are there any troubleshooting steps available for iOS devices, please?

Hi there,  My friend recently purchased SBG8300 and I was helping her in setting up the device. During the process there was a security check and that was asking for a captcha code to type in, but it was blank, and no captcha is available. this was on the surfboard central app.when I tried completing it in 192.168.0.1 on the network set up wizard step 1, again there was a blank captcha code and was not able to complete the set up. I will appreciate if anyone can help me with this. 

I recently setup my Modem (SBG8300) to bridge-mode, and now I cannot get to the modems admin page.I can get to the page sometimes. Itll load maybe 1 out of every 10 times, but I cannot get past the login page (192.168.0.1/login.php). I’ll get a page that says “this site can’t be reached”..Any ideas? 

I have a sbg8300 and the wife bought a new phone. Trying to connect to wifi and it doesn't accept the password. I deleted my connection on my tablet and tried to log in and cannot connect. Any help will be appreciated. Thanks

I have an SBG8300 modem/router connected to Cox cable.  Last year it was working completely fine.  Then I moved it to a new house - same Cox cable - but had to buy an aftermarket power cord from Amazon.Now the internet drops once a week and I have to reboot the modem (unplug and plug it back in) in order to get connectivity back up and running.Any ideas?  Is the unit overheating?  Is the aftermarket power cord causing issues?  The modem/router is roughly 1.5 years old and for several months, wasn’t even being used.Thanks!