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SBG8300

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

  • 375 Topics
  • 969 Replies
375 Topics
C
The Many
Cowboysrule931The Many
asked in SBG8300
intermittent internet connection drops

I just bought this sbg8300 and replaced my cox panoramic modem. I bumped my speed to 500 mps. I canceled all my cable boxes and now do all streaming. I use 7 firesticks for streaming.  Normally no more than two at one time. Every 3-4 days the screen freezes up and the internet connection drops. Unplugging the modem for 60 seconds and restarting again connects everything again. I had no such problem with the cox panoramic modem. But cox was charging me 14 bucks a month to rent it. I don't do gaming at all. When I reset the modem I check to see if its hot but it doesn't feel like it. I do have TPlink deco attached to one port to extend the signal throughout my house. But that doesn't seem related.  I really want get this fixed so I don't have to keep resetting the modem to cox.  

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The Many
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John CarpenterThe Many
asked in SBG8300
SBG8300 no longer works with xfinity

One day my SBG8300 lost internet connection from Xfinity, Xfinity told me it was the modem, so I bought a new SBG8300. It also had no internet connection. Xfinity then told me they updated the area network and the SBG8300 was no longer compatible with Xfinity. I needed an update for the SBG8300.I looked and there is no software update for SBG8300. Is there a solution for this?

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Wi-Fi Warriors
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The Many
WinsettzThe Many
asked in SBG8300
surfboard 8300 failure?

Woke up this morning to the router only displaying the first “online” light. xfinity app fails to connect from the isp side, can’t resetswitched to different coax spot in case it failed at the wall, no change. wifi signal no longer emitted, can’t connect to router directlyCan’t connect via ethernet cable eitherpowering down for a minute and powering up, no changefactory reset (press pin for longer than ten seconds), no change. have I missed a troubleshooting step? 

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plemans
Juggernaut
V
The Many
Vek1The Many
asked in SBG8300
First time activation Xfinity no internet access

SBG8300 first time activated with provider, no internet access. Sevice rep came to house checked all and says his part is all good. Still no internet. Why?

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Wi-Fi Warriors
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The Many
Smoking5928The Many
asked in SBG8300
How to get Ring doorbell to work with Arris SBG8300

I can’t get my ring doorbell to work with my Arris SBG8300. It won’t connect at all to the network. I have tried to edit any of my router settings that seem like they might make a difference all to no avail. If anyone has a clue on how to resolve, would be much appreciated. 

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Wi-Fi Warriors
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The Many
narlusThe Many
asked in SBG8300
Help with port forwarding on SGB8300

i have configured port forwarding successfully in one instance, but have tried to open two ports needed for my NAS and have not had success despite following the instructions at https://arris.my.salesforce-sites.com/consumers/articles/General_FAQs/SBG8300-Port-Forwarding-Setupit’s not clear what the Service Type should be set to and i tried a couple different ones with no luck. .   any suggestions on what to try next?

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Wi-Fi Warriors
K
The Many
KJ-sanThe Many
asked in SBG8300
SG8300 drops internet every 2 hours on Cox

Hello,  3 days ago around midnight, we lost everything with Cox, Cable, and the internet both went dead. The next day cable was back so we reset the SG8300 and the internet came back.  Now for the past 2 days, almost like clockwork, we lose the internet every 2 hours (but cable still works).  My wife works remotely & is kicked out of meetings, I’m taking college and it’s kicking me out of my classes.       We called Cox several times, and their only answers are to give them more money: They want me to a) pay ~$90 for a tech visit, b) start renting their modem for $13/mo, or c) increase my Cox “tier” an additional $10/mo so I can talk to someone besides the “is your modem plugged in?” person.  They are trying to tell me my SG8300 is “too old” because it’s 2 yrs old, but when the internet is working, everything checks out good.      What else can I try?

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K
The Many
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piersonjThe Many
asked in SBG8300
Unable to host HTTP services through DMZ SBG8300

I have recently picked up an SBG8300 to replace a damaged SB8200.On that SB8200, I was able to host HTTPs services through the device and these services were available globally via my domain name pointed at my home IP.On this new device, that is no longer the case. I can confirm that the services are initiated properly and are able to be used at ‘localhost’, but I cannot reach them via the public address.Things I have tried:Creating a fixed IP for the hosting device internally Designated DMZ as the fixed IP of host device- no good, connections refused Created a makeshift DMZ through port forwarding ports 1-65535 int/ext and TCP/UDP for the host device- no good, connections refused Setting IPv4 and IPv6 firewalls to Custom - Firewall Disabled levels- no good, connections refusedWhen I try to reach the web page for the hosted service in question, I reach the “https:// Redirect” page for my service, which is clearly not going to work as the service is hosted on HTTP.How can I allow my HTT

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Wi-Fi Warriors
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Jerseyboy11The Many
asked in SBG8300
How do I reconnect devices to the 2.4GHz network in SBG8300

Lost power yesterday and now none of the devices that are running on 2.4GHz are connecting I can’t get them to connect and I can’t figure out how to connect them??

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Wi-Fi Warriors
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The Many
TimbThe Many
asked in SBG8300
Wi-Fi light is flashing in sgb8300

Why is my WiFi light flashing

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plemans
Juggernaut
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The Many
DbatThe Many
asked in SBG8300
unable to activate the modem SBG8300 with Xfinity

SBG8300 is not showing up when Xfinity resources it. It online I can see it as a network but I cannot connect to Internet. I called Xfinity twice I reset and the connection resourced and restarted and all that jazz. It showed up on Arris website as active modem and on Xfinity but still can't use my Internet. Does anyone have any hints or ideas on how to get my internet working? Last time spoke with Xfinity they couldn't see it in there system.

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Wi-Fi Warriors
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XfinitydupeThe Many
asked in SBG8300
unable to activate the modem SBG8300 by xfinity since no CM MAC number

Hello. My new Arris SBG8300 has WAN MAC and HFC MAC numbers but no CM MAC number. Xfinity wifi activation cannot continue without a CM MAC number. Any help?

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plemans
Juggernaut
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The Many
philmiThe Many
asked in SBG8300
How to propagate SBG8300 time server to lan clients? SBG8300

When the SBG8300 Firewall IPv4 is set to Max my Win10 client cannot sync time using external NTP servers.  I can change to the Firewall to Typical and then syncing to external NTP servers works.  But I have also configured the SBG8300 Time Server and I am wondering how to point the Win10 client at the SBG8300 time server so that I can leave the firewall set to MAX?  Is there a local IP address related to the time server?

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tsgawlakThe Many
asked in SBG8300
No internet upon SBG8300 activation

I worked with Xfinity to setup my new SBG8300 but can’t connect to internet.  Is that an Xfinity issue?  Thank you. 

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Bilby1999The Many
asked in SBG8300
lag spikes SBG8300

Every time I go to play I have packet bust and packet loss that makes me rubberband while play warzone please help

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Wi-Fi Warriors
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The Certified
PoloniaThe Certified
asked in SBG8300
Is this AC adapter compatible with Arris SBG8300?

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

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plemans
Juggernaut
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The Many
RedLionNJThe Many
asked in SBG8300
SBG8300 WAN speed drops to a crawl every 2-6 days

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 Xfinity. We’re as clean as we can be.  I lo

493
plemans
Juggernaut
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The Many
chazterThe Many
asked in SBG8300
Arris SBG8300 - Speedtest (slower than 1GB)

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 around approx 500 MB download speed.  This should n

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debbierussThe Many
asked in SBG8300
192.168.0.1 wont open on any browser - SBG8300

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.

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Wi-Fi Warriors
D
The Many
Dan55scoutThe Many
asked in SBG8300
No internet connection on SBG8300

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?

872
LoveMyLab
Guardians of the Gateways
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The Certified
ReaperThe Certified
asked in SBG8300
5 Quick Flashes on Front panel of my SBG8300-8D51 when plugged in

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?

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The Certified
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SeptemberCThe Many
asked in SBG8300
SBG8300 with TP-Link Deco XE75 AXE5400

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.  

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plemans
Juggernaut
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The Many
strategiclynkThe Many
asked in SBG8300
How to activate the modem SBG8300

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

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plemans
Juggernaut
J
The Many
jmyranThe Many
asked in SBG8300
Slow speed internet on SBG8300

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

4464
plemans
Juggernaut
D
The Many
DemcderThe Many
asked in SBG8300
Port Forwarding stops working SBG8300

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.

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Wi-Fi Warriors
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