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SBG8300

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

  • 349 Topics
  • 891 Replies
349 Topics
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The Many
Brians34The Many
asked in SBG8300
Unknown device how do i block it on SBG8300

I have an unknown device showing on my surfboard app.   I've been throughout my home and can't find any other devices I haven't named in my surfboard.  I want to remove or block access to this device but I don't know how to do either of those things on my android phone app.  Can you please tell me how I'd go about blocking or deleting this device from my system? I have my 2 printersMy NEST  ThermostatSon's Play StationFirestickVIZIO TV and all other things that were connected to network on itROKU TV3 EVO FORCE1 boxes for televisionsMy phoneSon's phoneSon's laptopMy laptop Been through the house, no idea what this last thing could be.   Unplugged Alexa,  but apparently that is Bluetooth.  

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Rockstar!
2 months ago
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The Many
MontybarThe Many
asked in SBG8300
No internet and needs firmware updated on SBG8300

I own my sbg8300 modem-router and use Mediacom. Recently it stopped working and I couldn't connect to the admin page, so I hardcoded my computer IP settings, connected to the router, and found that the ipv4 settings were all wrong. I reset them and the router worked for two weeks. Today they are messed up again and it won't save my changes. Right now the gateway is set to 120.74.103.183 and the subnet is 0.208.94.67. These are wrong, right? Is my firmware corrupted? How do I fix it?

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Wi-Fi Warriors
2 months ago
J
The Many
jdiliddoThe Many
asked in SBG8300
The 2.4GHz network password is no longer working

I have an Arris Surfboard SBG8300 where the password for the 2.4GHz network isn’t working with new devices. I can connect to the modem/router and the password for the 2.4GHz network is correct in the Admin portal. Devices that have been connected to this network are working fine, but when I try to connect a new device (Echo Dot) to the network, I get an invalid password error. I’ve verified the password in the admin panel is correct and I’ve entered the password several times into the Alexa app that connects the Echo Dot, but I still get the password error. I have many devices using the 2.4GHz network, and they are all working fine. The error only happens when I try connecting new devices.This doesn’t happen only on Amazon products. I only have this error on new devices that are limited to a 2.4GHz network. My only workaround is to use the 5GHz network. It’s using the same password as the 2.4GHz network, and I am 100% certain that I am entering the password correctly.I don’t want to re

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J
The Many
2 months ago
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The Many
YarleThe Many
asked in SBG8300
SBG8300 shows only solid blue light and no internet

My sbg8300 shows only blue light and lights do not change. I cannot connect to modem using Ethernet. I tried resetting the router but nothing happens. 

371
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Wi-Fi Warriors
2 months ago
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The Many
LarsoncabinThe Many
asked in SBG8300
modem sbg8300 cannot use arlo camera

Was told by Arlo must do the following to the modeminstall network monitoring tool dhcp and dns fixation removal of old network configuration and reconfigure network optimization  right firmwear assignment to router Computer and network cleanuparlo has not been helpful in getting a he cameras to work

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Wi-Fi Warriors
2 months ago
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The Many
LombardoSDThe Many
asked in SBG8300
SBG8300 Continuously Loses Network Connection

We purchased an SBG8300 modem/router approximately a year and a half ago. Since we’ve had it, we haven’t had a month go by that the modem doesn’t lose network connection, reboot, lose network connection, & reboot numerous times before working again. There’s no rhyme or reason as to when it occurs (morning, afternoon, evening) and it affects every device connected to it. We’ve tried various things to solve the issue but it keeps occurring.I’ve had Xfinity come out to check it but they can’t find any issues. I’ve reset the modem on several occasions and even changed the network names but that hasn’t helped. I’ve changed out the coax cable to the modem & I even replaced all of the Ethernet cables going to and from the modem but no luck.  I just recently stumbled upon the QAM Upstream Power Level solution. However, when I log into the modem settings, from what I can see, according to my research information, the power levels seem completely fine. I’ve attached 4 screenshots from th

791
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Wi-Fi Warriors
3 months ago
C
The Many
cbird33333The Many
asked in SBG8300
Network password not working SBG8300-4EF1

Just bought the modem and tried to set it up with Xfinity. The WiFi is connecting fine, but I can’t access the network. I think the password is incorrect. Please advise. 

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Wi-Fi Warriors
3 months ago
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The Many
beeerussThe Many
asked in SBG8300
Wifi Keeps Dropping SBG8300

I need some help troubleshooting the wireless my SBG8300. My wifi is dropping out daily and sometimes multiple times a day. For a connected device, the wifi will stop working. Sometimes the device will show connected with no internet and sometimes it will drop the connection. Sometimes the SSID is still visible but devices are unable to connect. Sometimes the SSID is not visible. Once I reboot the modem, all wifi radios are working again. This has been happening for months but more frequent recently.I have a 2.4gz radio set up, I have a 5ghz radio set up and I have a 2.4ghz isolated guest network set up. Sometimes the 5ghz radio will stop working and the others will continue to work. Sometimes the 2.4ghz radio will stop working and the other will work and sometimes all the radios stop working.I have tried all the steps located here: General FAQs: SBG8300: Troubleshooting Intermittent Wi-Fi Connections (salesforce-sites.com)I have also tried changing the wireless channels.I have tried m

1167
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Wi-Fi Warriors
3 months ago
G
The Many
Gamul1The Many
asked in SBG8300
SBG8300 & Google Nest Wi-Fi intermittent internet connection

I bought the SBG8300 about a year ago and hooked it up to my existing Google Nest wifi bundle (which includes a router and two access points). The Google nest was hooked up to my previous Verizon router with no problems. A year ago we switched to XFinity and that is when the issues began, just not that often, until now. On occasion this past year, we have had wifi issues connecting to the Google nest. But over the past few weeks, it has been a non stop problem. One of the access points keeps going offline. I have tried cycle powering them down and then up and that works for a little while, before one of the points goes offline again. I’m thinking maybe this is a configuration issue between these devices?I saw the article about setting up the SBG8300 in bridge mode, but I also saw this statement:“Setting the SBG8300 in Bridge mode disables the router” Dumb question, but don’t I need a router? I know the Google nest has a router as the primary, but my internet cable input is going into t

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Rockstar!
3 months ago
D
The Many
dlehmanThe Many
asked in SBG8300
Wireless vs wired speed with SBG8300

I am currently using 1G service from Xfinity but will be switching to Quantum fiber next week - that will entail using a mesh network they will install and my Arris wifi cable modem will no longer work with the fiber service.  I’ve been using a wired connection for my office computer and wanted to see what will change when it goes to a wireless (mesh) network after the fiber is installed.  So, I ran some tests comparing the wired and wireless speeds from my current SBG 8300 cable modem.What I see is that I get 924/42 speeds from the wired connection and 380/41 from the wireless connection.  The wireless test is using the 5G connection with my computer sitting 6 feet from the modem and no other devices currently being used.  I also tested my speed in my basement using the 5G network and it also shows around 400/40.  Presumably the 5G connection should be getting about double that - and I do get double with the wired connection.  So, my question is why the wireless connections are so muc

9111
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Rockstar!
3 months ago
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The Many
Losers24The Many
asked in SBG8300
locked out when bridge mode toggled on SBG8300

My slow speed internet lost wi if connection with devices in the house but high speed devices continued to remain connected after an internet and power outage. I tried reentering WiFi passwords on the slow devices no luck. I logged on to surfboard app and toggled bridge mode. Now all devices connect on to the WiFi signal in the house but are no longer connected to the internet. How do I reset modem/ router to factory settings without bridge mode. Surfboard internet location 192.168.0.1 no longer works. 

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Rockstar!
3 months ago
B
The Many
BigdowglbThe Many
asked in SBG8300
Slow speed internet on sbg8300

I got a SBG8300 and I reset it cause it was running slow and now it’s stuck on the blue light and it don’t even let me reset it again. I unplugged it overnight and still the same thing. Any help would be appreciated. 

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Wi-Fi Warriors
3 months ago
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The Many
SkunkmilkThe Many
asked in SBG8300
Can not log into the gateway on SBG8300 to change the Wi-Fi credentials

Replacing an older modem/router that was continuously dropping the connection. I finally got the connection to work, but now I can not get access to the gateway to rename the hardware or to change passphrases. Does this require a factory reset?

581
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Rockstar!
3 months ago
U
The Many
uncouple141The Many
asked in SBG8300
iphone app does not show “my devices” connected to SBG8300

I installed the SBG8300 modem/wifi router yesterday. Connected devices are working great. I logged in the GUI and can see the connected devices, nevertheless the iPhone app shows “00” devices. I have restarted the modem and it does not fix the issue. What is interesting is that the web GUI shows all the connected devices, but not the iPhone app

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U
The Many
3 months ago
A
The Many
Avel1371The Many
asked in SBG8300
SBG8300 keeps disconnecting

Why do my SBG8300 Cable Modem & Wi-Fi- Router keeps disconnecting from my internet???  

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M
The Many
3 months ago
D
The Many
DemureninjaThe Many
asked in SBG8300
the rated voltage and current of sbg8300

I need to replace the ac adapter for the sbg 8300, but the materials that came with the modem/router don’t say what the device’s rated voltage and current are. Seems like the ac adapter would need to be 12 volts and 2 amps, but I used an ac adapter with those specs with this device and that adapter got fried and stopped working. Is there more information I need to select the right adapter? Can someone please confirm the ac adapter and/or voltage and current specs for the sbg8300 so I can make sure to order the correct replacement? Looks like Arris doesn’t offer ac adapters, just uses third-party ones. I want to make sure it’s compatible and pricing and info for ac adapters is all over the place and inconsistent. Please help!

593
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Rockstar!
3 months ago
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The Many
panekmiThe Many
asked in SBG8300
SBG8300 Blue lights blink 5 times then nothing after lightening

I know the SBG8300 is an older unit, but it has served me well for several years.It is powered via a large APC UPS so it is not connected directly to utility AC.I hard-wire (ethernet cable) my modem->desktop to maximize internet performance (Xfinity).Event: I was working online during a thunderstorm with LOTS of lightening. In a moment, my internet connection failed. I looked at my modem and it was DARK. My UPS was nominal and my desktop and other accessories were operating normally.I tried unplugging the Arris modem and waited 30 seconds to reboot. Immediately upon restoring power to the modem I noticed BOTH BLUE lights blink 5 times then the modem went dark again. I tired a hardware reset (small hole in back of unit) and received the same result. I tried unplugging then restoring power again and got the 5 blue blinks then dark again.An exhaustive search for this troubleshooting indication was fruitless.I suspect an electrical surge found its way up the COAX cable which fried the m

261
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Rockstar!
3 months ago
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The Many
GatorThe Many
asked in SBG8300
SSID For Surfboard SBG8300

My modem router connects to 2 different SSIDs: SB8300-BBB and SB8300-BB8? There something wrong with this model. Do I need to change it?

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Wi-Fi Warriors
3 months ago
K
The Many
Keegdude98The Many
asked in SBG8300
cant connect to internet on SBG8300

I have the ability to connect to the wifi but there is no internet access, the apartment complex gave me this modem and said this was all i needed but idk what else to do to connect to it

671
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Wi-Fi Warriors
3 months ago
D
The Many
dbowling90The Many
asked in SBG8300
SBG8300 Wi-Fi router with Fiber optics through frontier

We just got fiber through Frontier. Can the SBG8300 be used as just a WiFi router? 

281
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Rockstar!
4 months ago
S
The Many
splineThe Many
asked in SBG8300
password change

how do i change modem password for accessing to my computer  

1481
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Wi-Fi Warriors
4 months ago
T
The Many
TexJay66The Many
asked in SBG8300
Setting up 2.4 and 5.0 ghz on SBG8300

How do I setup the 2.4 and 5.0 GHZ Networks on my SBG8300?

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Wi-Fi Warriors
4 months ago
H
The Many
HalpmeThe Many
asked in SBG8300
Changing guest passwords for SBG8300 Access

I can’t login using the password that I just created when I did a hard reset to get to the pages to change my guest wifi passwords for security purposes. I have an Arris SBG8300I did two hard resets now to try to solve it and it skips the username creation item and goes straight to the create a password and reenter password page which I completed. I then changed the name and passwords of my primary daily Wifis - but to access the guest wifi band pages - I need to login using the account info...On that side, it’s saying that I’m putting incorrect credentials (“admin” and my new password). I tried the new password from the initial steps, the new primary daily wifi password, and the number password on the back of router, I tried resetting the router again and doing it all again and no success….I validated they were all correct multiple times. Is there another username other than “admin”, perhaps?  Thanks in advance!

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Wi-Fi Warriors
4 months ago
D
The Many
drussell3The Many
asked in SBG8300
sbg8300 intermittent internet connection.

It's random. But, my modem looses both 2.4 and 5g connection. Randomly. Hardwire works fine. Usually resetting modem temporarily fixes problem. But, it can happen anytime. 1 day, 1 hour or even a few days later. Sometimes multiple times a day. My dad has same modem and never has this problem!

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Wi-Fi Warriors
4 months ago
B
The Many
BriandenisefarleyThe Many
asked in SBG8300
Slow speed internet on SBG8300

I recently installed and activated through internet provider, Xfinity.  Slow sporadic WiFi, very limited range.  

772
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Wi-Fi Warriors
4 months ago
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