- - Explore the Community
SURFboard.com

Community
Modems

Modems

DOCSIS 3.0 and 3.1 cable modems

1400 Topics

rspoelstraThe Many

S33 Modem/Router (not WiFi)

Is the S33 a modem/router combo or just modem? I’m not talking about WiFi, I just need to be able to physically connect multiple devices to the LAN interface using a switch and want to make sure it hands out DHCP IP addresses. From what I’ve found the default IP is 192.168.100.1 so it does do some routing but want to make sure I can connect multiple devices on the inside.

2213

1 year ago

MichealThe Many

posted in SB6183 | SB6190

No internet in SB6183

Xfinity internet did some recent updates to the service and after that my internet is no longer working. My devices do connect to the Wi-Fi and xfinity says my modem is online however it keeps saying no intervener connection on all my devices.

701

1 year ago

DeannaThe Many

posted in SB8200

Troubleshooting for SB8200

I have contacted my Internet provider who directed me to you for help. They said I am having issues with the modem locking onto the router?

531

1 year ago

dprachtThe Many

asked in S33 | S34

S33 modem keeps losing connection to Cox

I am constantly losing connection to the internet and see the following errors in the modem logsCMSTATUS:DS_Diplexer_Mode_Change_IgnoredCMSTATUS:US_Diplexer_Mode_ChangeSYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;No Ranging Response received - T3 time-out;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=6c:13:d5:75:6f:21;CM-QOS=1.1;CM-VER=3.1;Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=6c:13:d5:75:6f:21;CM-QOS=1.1;CM-VER=3.1;So far Cox has replaced the line from the pole to the modem, talked to multiple cox agents who have reset the modem and the issues are still happening.I have also done a reset via the reset button on the bottom of the modem restoring factory defaults. over this past weekend I have sections of modem logs missing, it there a limit of how much it will keep? I have noticed this behavior over the past couple of w

5034

1 year ago

goldfilmThe Many

asked in SB8200

SurfBoard SB8200 Firmware upgrade

Can’t find the latest firmware version for my SurfBoard SB8200, which is in boot loop. Arris official support website for this product is empty, no links.

9897

1 year ago

cmaltThe Many

asked in S33 | S34

S33 2.5GE Port Blinking Amber

Hello, I was using the Xfinity-provided combo unit and decided to purchase a better standalone unit. I went with the Arris Surfboard S33 modem and a mesh network router system. My Xfinity plan gets up to 1.2 GB of download. Since installing the S33 modem about a week ago, I'm only seeing downloads around 100mbps. Any video calls have been very choppy as well. I have an Ethernet cable connected from my router to the 2.5GE port on my S33. The light on said port is blinking amber. From what I'm seeing online, that means it's on a 100mbps connection. How can I improve this connection to get closer to my plan maximum? I've reset the modem and nothing's changed. Any help would be appreciated.

10583

1 year ago

chefekwallThe Many

asked in Modem - General

Removing Devices

How do I remove devices from my router that I don’t want connected.

4791

1 year ago

MissionhtThe Many

asked in SB8200

Astound can't provision SB8200

I spent a couple of hours on the phone with Astound (formerly RCN) and they could not get my SB8200 to provision. they would send signal, lights would blink, and then it would just turn off. If I reconnected the ISP supplied modem there was no connectivity issues.Tried to call Arris and even though they say they are open 7-Midnight central time the voicemail said they were closed at 10:25PM.I connected directly into the modem and couldn’t communicate with it either as the modem won’t stay on. Any ideas?

4444

1 year ago

mbudhirajaThe Many

asked in SB8200

checking compatibility of router with modem - SB8200

Hi, I purchased an arris modem: https://www.amazon.com/dp/B07M8BNVSD?ref=ppx_yo2ov_dt_b_product_details&th=1I would like to check if this router is compatible with it: https://www.amazon.com/NETGEAR-AC750-Dual-Router-R6020-100NAS/dp/B01NBBA1HS/ref=sr_1_3?crid=3VD3NFEUB8IC3&keywords=router%2Bwifi&qid=1699888830&sprefix=router%2Bwifi%2B%2Caps%2C78&sr=8-3&th=1Thank you!

9743

1 year ago

OreofirelightThe Many

asked in SB8200

SB8200 Constantly Resetting

I have an Arris SB8200 Modem. Recently, it is resetting (i think) or turning off and turning on multiple times a day. It is extremely frustrating, as it used to never do this and now it is constantly doing this. The blue lights will go off, and then will turn yellow for about a minute and then go back to blue and the internet is back. Attached are the event logs and other info about the modem. What do I need to do in order to make this problem go away? Thanks in advance to anyone who tries to help Downstream Upstream[EDIT: deleted image with personal information by moderator]

11227

1 year ago

Dylangomes8The Many

asked in S33 | S34

Modem Name and Password for Arris Surfboard Model S33

Got the S33 to replace my Xfinity modem. Had the internet switched to this modem. Xfinity saw the connection activated on their end, but I couldn’t see the WiFi name on my end. Tried to search for Admin and used both the serial number and “password” as the password. Neither worked. I was able to get Xfinity to activate the old router in the meantime. What should I do now? Any help is appreciated.

7983

1 year ago

zedsdead89The Many

asked in SB8200

SB8200 need login credentials for gui

Hello, I don’t believe I was given a default username and password for my modem. What would they be by default? If needed, how would I hard reset?

1271

1 year ago

OleksandrThe Many

asked in SB6183 | SB6190

Warranty replacement help needed SB6190

The warranty period for my Arris SB6190 modem is until March 29, 2024. Yesterday it just stopped working. How and where can I send a faulty modem for replacement? The link to support from previous responses to comments is not active.

1424

1 year ago

Discgolf157148The Many

asked in SB6183 | SB6190

Wi-Fi password for sb6183

I can’t find password for sb6183

1405

1 year ago

marcianeeringThe Many

asked in SB8200

Unable to connect to network due to password incorrect in SB8200

Unable to connect to network. Password not accepted.

941

1 year ago

jeancThe Many

asked in SB8200

SB8200 downstream connectivity light is green instead of blue

The modem is only a few months old and since a week I have an issue with it.I use comcast/xfinity and the downstream connectivity light has always been blue and the upstream has been green because of the slow speed of 40mbps.My download speed has always been about the same which is 900 mbps. Since the downstream connectivity light has turned green (last week) my download speed has not changed it’s still about 900 mbps and more.The only way I can have back the blue light to come back it’s by recycling the power or resetting the modem but the blue light will not last. During the day or next day it will turn green again even though the speed is still 900 mbpsAnyone has any idea why this is happening? Thank you

10946

1 year ago

ecos66The Many

asked in SB8200

Internet behaving very strange sb8200

If i connect my laptop straight to the modem most pages work, but when I plug my router it stops working

KandKThe Many

S33 modem stopped providing internet service. Front panel LED is flashing green at Avery high rate for speed. Tried power off for multiple minutes. Tried resetting and reboot procedures. Same LED high flash rate (essentially a flicked). Tried direct computer network connection to access the modem default IP address, no response from the S33 unit. Any other options to get this unit working? Was purchased 3/31/23 and is still under warranty. Not sure how to make replacement claim if the S33 is truly dead.

1833

1 year ago

Walshdavis2005The Many

asked in Modem - General

no internet

The online light will not co.e on and says no internet connection we unplugged it and reset it still nothing! Frustrating

231

1 year ago

CatzluvThe Many

asked in SB8200

power on failure in SB8200

Dead SB8200. It's been barely 6 months since I purchased this modem and it's completely dead. I have a universal adaptor to make sure it wasn't the power cord. This thing is dead to the world. Nothing I can do to fix this. It's still under warranty, but I can't seem to get in touch with anyone to find out what I need to do with a piece of junk.

551

1 year ago

spanglemThe Many

asked in SB8200

SB8200 speed issue with Cox Cable

Hi, my SB8200 is about 3 years old. My ISP is supplying 500 mbps but I’m barely getting 200. Cox’s answer is that my modem is outdated and should be replaced. They will basically not do anything to help. I’m no expert and I realize things get outdated, but I don’t think that’s the case. Looking for opinions, some advice. Should I replace my modem?

1151

1 year ago

jbdakenThe Many

asked in SB8200

Compatible speed with Optimum service in NJ - SB8200

is an Arris SURFboard SB8200 DOCSIS 3.1 Cable Modem , Approved for Comcast Xfinity, Cox, Charter Spectrum, & more , Two 1 Gbps Ports , 1 Gbps Max Internet Speeds , 4 OFDM Channels compatable with Optimum service in NJ

4081

1 year ago

Brian28gThe Many

asked in SB8200

Steering to satellite - SB8200

Short and to the point. I have a surfboard sb8200 and 2 mesh w21's. Only 3 days old from Amazon. I have 4 devices way passed the satellite and there all 2.4 only and their only on the main router. I have a camera off a ways also and it's the only one on the satellite. If I go outside with my Galaxy watch it goes on the satellite. The main says there are 4 devices with poor signals, but still work, and they won't go on the satellite. My main has 15 devices and my satellite has 1 and my watch sometimes. I've read lots of ideas from people that think their correct. It's crazy arris won't help anyone, they just have self help. I'm going to wait until 1 month when the warrenty is about to expire and return it and keep getting a new one until I get help. 👍

715

1 year ago

amirtkThe Many

asked in Modem - General

VAP3400 Default web login user and password

Dear Arris team,Appreciate your support inform me default username and password for web page login VAP3400 AP,Thanks

3571

1 year ago

desolatejtThe Many

asked in S33 | S34

S33 modem - Xfinity hard stuck at 40Mbps upload

I just recently bought the s33 modem in hopes to lower my bill but now I’m not getting the upload speed I was getting with the xfinity modem. I talked to comcast and the tech support couldn’t figure out the reasoning behind it. I feel like it could just be the firmware on the modem not updating properly but the tech didn’t know how to update it himself

3461

1 year ago

Page 30 / 56

Terms & Conditions Cookie settings

Sign up

Already have an account? Login

Username *

E-mail address *

Password *

I accept the terms & conditions

loginBox.register.email_repeat

Login to the community

No account yet? Create an account

Username or Email

Password

Remember me

Forgot password?

Enter your E-mail address. We'll send you an e-mail with instructions to reset your password.

Enter your e-mail address

Back to overview

Scanning file for viruses.

Sorry, we're still checking this file's contents to make sure it's safe to download. Please try again in a few minutes.

This file cannot be downloaded

Sorry, our virus scanner detected that this file isn't safe to download.