S33 | S34

This has been a very frustrating experience. For several months I’ve had slow internet speeds and I’ve called both Arris and Comcast and both companies blame the other. I finally got a comcast tech to come out and he says that there is nothing wrong with the signal coming into my home. So now I am back to looking for support from Arris. This modem is less than 1 year old. I pay for 1.2 gigabits but I consistently less than 400. Comcast assures me the issue is related to my modem. I would appreciate any help in resolving the issue. From what I’ve been able to figure out, the Arris S33 is compatible with Xfinity up to 2gbs. Is my device faulty?  

Hi! I need to return the Arris S33 modem that I bought a week or so ago. How do I do that? And FYI, I already opened it unfortunately because I realized I bought the wrong product afterwards. Thank you for your help and time!

The modem management page on my Arris S33 prevents the use of copy/paste to enter the password.This is counterproductive and actually decreases security because it forces me to use a password I can remember, as opposed to a long, strong random password generated by and stored in a password manager.Can you please change this so I can paste the password in?

Hi! First of, I am no techie, but I can follow instructions.  Senior female here who has always hooked up all electronics.  I hooked up the S33 two weeks ago because we are paying Comcast for 1.2g internet speed and couldn't even stream a movie anymore (directv) that had already started.  I also upgraded to the Nest Wifi Pro system.Since Comcast often shuts off "for servicing" without warning my Nest security system also shuts off.  We do not have the kind of neighbors where this is a good idea.  To have a backup system I bought the Eufy s380 homebase with two s330 cameras.  Problem is, the homebase will not connect to the Arris no matter which port I use.  The potential issues are "is DHCP enabled?"  and the other jazz such as "is the ethernet cable securely connected?  Is the power cable connected?"I wonder about DHCP.  But the Surfboard app is useless in that it deals only with setup.  I have no idea where to find DHCP.  It is my understanding that the

I got a new modem and it has a generic username that doesn’t allow me to put in a generic password to reset

New install, setup modem, change MAC with IP (WOW) and can connect through the modem via Ethernet.When setting up Google WiFi an error occurs.  "The modem isn't giving your Wifi point an internet connection." I follow the instructions, unplug everything and wait and receive the same error.I have fully factory reset the router, nuked my Google home, uninstalled the app and received the same error.Contacted IP, they claim all is well on their end.Reset system to provided gateway, nuke Google home again and it works. Any ideas would be greatly appreciated.    

I wanted to inquire on the status of the certification process for the Arris S33 Modem for Xfinity’s Gigabit x2 plan which is 2000 mbps down and 200 mbps up. Currently the S33 Modem isn’t approved for Xfinity’s “next gen” speed tier aka Gigabit x2. Where does this currently stand? The modem should be able to handle these bandwidth speeds.Please reference resources below for additional details. Xfinity Recommended Devices (updated 10/25/23)https://assets.xfinity.com/assets/dotcom/projects/cix-4997_compatible-devices/2023.10.23%20Full%20List%20of%20Compatible%20Devices.pdfOfficial Xfinity Reddit Post

I just replaced my Xfinity modem with an Arris S33(v2). While I’m getting about 720Mbps down I only get 5Mbps up.  I’m paying for 1000/200 service.So far it’s taken Comcast 3 tries to get the modem provisioned and they seem to be stumped as to what’s going on.The device log (which BTW isn’t sorted by date/time) contains the following after a restart (I added line breaks for readability):17/11/2023 14:59:11 3 CMSTATUS:US_Diplexer_Mode_Change:TLV-84.1, 5-42MHz.17/11/2023 14:59:17 6 DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.; CM-MAC=[removed personal information]; CMTS-MAC=[removed personal information];CM-QOS=1.1;CM-VER=3.1;17/11/2023 14:59:26 3 UCD invalid or channel unusable; CM-MAC=[removed personal information];

Xfinity 1200Mbps /  35 Mbps Arris S33 Wired on 2.5Gbps Port - connected to a new Gaming Laptop with a 2.5Gbps port using a new Cat6 - speed test range from 500Mbps / 40Mbps to often only 300Mbps / 40Mbps. Xfinity came out and can’t figure it out. When they connect their own equipment to the coax direct their test show it’s a perfect connection and all signals and power levels are in perfect range…. Very frustrated, this is my second modem, my older one was working until it all of the sudden was no longer compatible with my plan (?) online support was also no help - I have spent hours trying to figure this out

I’m trying to set up an Arris surf  S33 V2 modem and it asks to select your internet provider. I have TDS for my provider but it not one of the providers listed.  Does this mean the S33 V2 isn’t compatible and if it isn’t what modem would work - Thanks 

Can’t connect to server, error 0000-1506.There doesn’t seem to be any way to retry other than deleting and re-adding the device, which I’ve done 3 times with the same result. Suggestions?

I have been having problems with Xfinity service?  I was finding that I would lose all internet connection for 24-36 hours at a time. Ihad Xfinity out and they stated my service was fine and eventually told my my modem was obsolete. I purchased a S33 at that time and all was good. Now three times in the last week I have lost access. It is both WIFI and my hard wired computer. I have attempted to restart the S33 and my router and this does not work. I switch to my hotspot and do what I need to do. I will come home from work and presto wifi is working again without me doing anything. While on support with Xfinity I bypassed my router and plugged my computer directly into the router with no success. They are telling me it is my hardware (router) since they can see it and state it is online. Thoughts?

Moden is less than 2 months old, I had no problems until a few days ago and now just looking at my event log there's more than 150 (Yes, 150) disconnects since the 10th of november, 50 reboots daily. On the 12th it went from 5am-7pm without reboots according to my log (I didn't do anything) and then it went back to rebooting. Already checked the coax cable, manually rebooted the modem, reset the modem, changed power outlets (router on the same power strip doesn't reboot either) and I also left it on without the coax cable and it still rebooted after 30 minutes (I don't know if that's on purpose). I can see the LED change from solid blue -> solid orange -> blinking green -> solid blue over and over again every few minutes (haven't had a solid hour today without rebooting). It doesn't ever turn fully off. Downstream Bonded Channels Channel

Event Log will not show, but instead get this pseudo-dialog top-left of screenHelp!  

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. 

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

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. 

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. 

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. 

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 

I have read the other comments, and it seems like this may be an Xfinity throttling thing! But I pay for 800 MBPS - and get less than 300?  Is there anything I can do on my end??

Just got the S33.  Am a little confused about the activation sequence.  using connectivity on my old linksys modem, should I do the activation, and then hook up the s33?  Concerned about whether i will have connectivity by installing the s33 first to do the activation.

After 3-4 months of clean operation, my S33v2 became unresponsive today with a white/pale green status light on the front, and a persistent high pitched noise. I don't suspect any Comcast issues. I unplugged and replugged it into power and the white/pale green light and noise immediately returned upon plugging in (no boot up light flashing).  This was repeatable including after leaving unplugged for several minutes. While plugged in I tried to factory reset using the button on the bottom. Even after holding the button for the requisite time period and beyond, there was no change. Finally after another power cycle, I'm getting a long amber status light followed by a short white/pale green and short off, then back thru the same color cycle. The high pitch noise is somewhat more erratic during this light cycling. All the while it spits out no Internet. I'm assuming this is a warranty replacement scenario. If you agree, how do I get that going?

Is there any way to chat with support?  S33 modem is lit up blue like usual, have zero wifi connection to any devices, and no xfinity outages. I’ve unplugged many times, just did a reset for 3-4 seconds, and nothing works. 

I’m trying to activate s33 with Comcast and the s33 modems MAC address is not coming up it the data base as being attached to a model