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SBG8300

SBG8300

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

335 Topics
840 Replies

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335 Topics

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MvheartThe Many

asked in SBG8300

5G not working on Surfboard sbg8300

I was having connection issues on my Arris SBG8300 using 5G. I enabled band steering, and now the 5G channel doesn't even show up as an option.

1 hour ago

BCH1959The Many

asked in SBG8300

Connected devices not listed on SBC app - SBG8300

Only one of 20+ devices show online on the app

22 hours ago

LanceThe Many

asked in SBG8300

SBG3800 Web Manager and Surfboard App not showing all connections

I recently installed an SBG3800. The Surfboard Web Manager only shows 9 connected devices; the Surfboard Central iOS app shows 0 connections. I can see all 12 connections on the Fing app. I have tried restarting the modem. Hardware Revision: 6Software Image Name:AR01.02.078.04_092820_711.NCS.10Firmware Version:01.02.078.04.NCSRDK-B-LLC:rdkb-20171127SDK:7.1Wi-Fi Driver:4.7.23.30.4.0

263

4 days ago

DesertHazeThe Many

asked in SBG8300

No Internet Available issue SBG8300

My modem goes on & off, doesn't work consistently and been a pain dealing with Cox. Now I have a Cox unit testing it and it's certainly my Arris surfboard that's the problem. I just got it last year certainly must not be faulty. Help!

282

6 days ago

shef777The Many

asked in SBG8300

Port Forwarding on SBG8300

No Port Forwarding

6 days ago

Richard JettThe Many

asked in SBG8300

Slow speed internet connection on Arris SBG8300

Xfinity just sent me an email stating that my Arris SBG8300 modem will not deliver 1.2 Gbps which is the speed provided by their network. My speed check comes to 868.5 Mbps and I am CAt6 hard wired to the modem approximatly 20 feet away.Can anyone on this form collaborate this info? And if so, does Arris have any suggestions to remedy this problem? Software upgrade?

311

11 days ago

nasario castanonThe Many

asked in SBG8300

can't access admin portal on SBG8300

i cant access the admin login. i used the default login after i reset the router and still cant get in. it does say im using an unsupported version of chrome but mine in is updated and because of that the browser is unsecure. I've tried adjusting every security setting and even downloading an older version of chrome but nothing has worked. i could use some help if anyone has any ideas

301

17 days ago

tacotacotacoThe Many

asked in SBG8300

SBG8300 network goes down when laptop connects

I bought an SBG8300 gateway a couple months ago, replacing an Xfinity rented gateway. Since then, I’ve had an issue where connecting my laptop to the wifi will cause the network to crash within about 30 seconds, sometimes faster. I have one desktop PC connected via ethernet, my phone is sometimes but not always connected and does not cause the crash, and there is a wifi printer which seems to have connection problems in general (I believe it may crash the network too, but it is hard to tell, since it disconnects at random - I believe this is an issue with the printer). My network is 400 mbps with Xfinity, and I had no issues while using their (rental) gateway. The laptop, a Samsung Galaxy Book 4 Edge which came out very recently and is new, will cause this crash consistently. After a few minutes, the network will be back up, and from there it will usually crash at least one more time, but not always. Depending on the day, the network will either crash repeatedly, or will start working

141

20 days ago

Raytone1The Many

asked in SBG8300

Slow Wireless vs wired speed with SBG8300

I have a 800 mbps service from xfinity. I get roughly 500 mbps wired and less that 100 mbps wireless. I’m sitting 5 feet from the router unobstructed. Doesn’t matter if it’s on the 2.4 or 5 channels. what are your thoughts? Thanks!

191

20 days ago

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.

341

20 days ago

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?

634

21 days ago

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

382

22 days ago

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.

291

26 days ago

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

26 days ago

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

591

1 month ago

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.

221

1 month ago

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

847

1 month ago

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

13713

1 month ago

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

6311

1 month ago

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.

121

1 month ago

JVRThe Many

asked in SBG8300

.SBG8300 bridge mode and eero devices

I bought an SBG8300 to replace the cable provider modem. I also have an eero wifi network. I started having issues and was advised to place the 8300 in bridge mode. I did that and all hell broke loose as my eero network was no longer recognized. I had to disable bridge mode on the router before things started working again. Any thoughts would greatly be appreciated

1 month ago

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.

231

1 month ago

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?

291

1 month ago

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

383

1 month ago

Avel1371The Many

asked in SBG8300

SBG8300 keeps disconnecting

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

764

1 month ago

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