SBG8300

DOCSIS® 3.1 Cable Modem & Wi-Fi® 5 AC2350 Router

  • 298 Topics
  • 748 Replies

298 Topics

B
The Many
bkriddleThe Many
asked in SBG8300

Blocked VPN Access To Firewalled Addresses

I have changed nothing on my SBG8300 to have caused this problem.  For several years I have used this home modem to connect to my company VPN and then log into my company's factory firewalls to access their network(s).  I have been using the company issued Cisco AnyConnect VPN software.  For the past month, when working from home,  I am not able to access the firewalls and the browser reports that the address cannot be found.  On infrequent occasion I have connected to a firewall but there is no rhyme or reason for why it worked.  Restarting the modem does not help.  My internet provider (Xfinity) tech support remotely examined it and didn’t know what the problem was so she suggested I get a new one (LOL, she gave up).  I can access the firewalls using my cell phone hotspot or another location that provides internet, but not through my modem.  At one point today I tried disabling the modem internal firewall but that did not help.  When I re-enabled the modem firewall and restarted the

1
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Guardians of the Gateways
1 year ago
B
The Many
baseballfreakThe Many
asked in SBG8300

Unable to connect SBG8300 to WOW

I am unable to connect the SBG8300 to the WOW network. I am connecting through the same coaxial port that my current WOW rented modem is connected to as I type this. While on the line with WOW, they said they could not find it via the HFC MAC. The lights on the modem were green and I do not have any splitters or anything complicated connected to this line. Has anyone encountered this or been able to get this router working with WOW? 

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Guardians of the Gateways
1 year ago
J
The Many
JDutyThe Many
asked in SBG8300

SBG8300 makes a whirring noise

My ARRIS SURFboard SBG8300 occasionally makes a whirring noise.  I've only had it for 7 months.  Should I be alarmed?  Thanks for any help.

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J
The Many
1 year ago
C
The Many
CjkellerThe Many
asked in SBG8300

network speed test

Whe I test my network speed on my Surfboard app I can only see the upload and download speed from my device to the modem.  Why can't I see the speeds from my modem to my ISP?

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Guardians of the Gateways
1 year ago
W
The Many
wei2goThe Many
asked in SBG8300

LAN working but WiFi does not

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?

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W
The Many
1 year ago
G
The Many
GibThe Many
asked in SBG8300

Installation

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? 

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G
The Many
1 year ago
D
The Many
dgraham1183The Many
asked in SBG8300

Adding 2.4gz accessories to my dual band SBG8300-0935-5G gateway

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.

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D
The Many
1 year ago
I
The Many
idiom444The Many
asked in SBG8300

Arris SBG8300 Unable to open ports

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.

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M
The Many
1 year ago
J
The Many
JoyceThe Many
asked in SBG8300

SBG3800: Internet speed 450 mbps but WIfi 70 mbps

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. 

3
J
The Many
1 year ago
L
The Many
LeoFRThe Many
asked in SBG8300

SBG 8300 Blinking Both Lights

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

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plemans
Legends
1 year ago
1
The Many
160MHzThe Many
asked in SBG8300

Does SBG8300 5GHz have Channel Bandwidth 160MHz?

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?

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Guardians of the Gateways
1 year ago
I
The Many
InspireColoradoThe Many
asked in SBG8300

SBG8300 and Google Mini

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.

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Guardians of the Gateways
1 year ago
K
The Many
kondojThe Many
asked in SBG8300

SBG8300 Bricked?

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.

3
plemans
Legends
1 year ago
R
The Many
rowantreeThe Many
asked in SBG8300

SBG8300 defective puma chipset?

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. 

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R
The Many
1 year ago
P
The Many
PapatsfanThe Many
asked in SBG8300

2.4 ghz issues

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.

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Wi-Fi Warriors
1 year ago
M
The Many
mordiniThe Many
asked in SBG8300

Wifi

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.  

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Wi-Fi Warriors
1 year ago
C
The Many
cljackmanThe Many
asked in SBG8300

Wi-fi

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?

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Wi-Fi Warriors
1 year ago
S
The Many
stevec1952The Many
asked in SBG8300

ARRIS SBG8300 FIRMWARE UPDATE

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

2
N
Wi-Fi Warriors
1 year ago
B
The Many
bostianThe Many
asked in SBG8300

can not connext to remote work server

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.  

3
plemans
Legends
1 year ago
V
The Many
Vizer22701The Many
asked in SBG8300

Surfboard Central

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 .

1
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Guardians of the Gateways
1 year ago
T
The Many
Tuthdoc99The Many
asked in SBG8300

sbg8300 doesn't see play-fi devices

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.

3
T
The Many
1 year ago
D
The Many
donn1237The Many
asked in SBG8300

ethernet Arris surfboard SBG8300

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

1
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Guardians of the Gateways
1 year ago
M
The Many
Mastertech91The Many
asked in SBG8300

Arris SBG8300 Firmware

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

3
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Guardians of the Gateways
1 year ago
W
The Many
wwepatriotThe Many
asked in SBG8300

Cannot add devices on parental control

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?

1
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Guardians of the Gateways
1 year ago
P
Button Mashers
PriyaButton Mashers
asked in SBG8300

Surfboard central app set up

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?

1
plemans
Legends
1 year ago
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