Skip to main content

S33 | S34

DOCSIS® 3.1 Gigabit Cable Modem

  • 372 Topics
  • 966 Replies
372 Topics
S
The Many
slyfamilyThe Many
asked in S33 | S34
Wifi password for S33

How do I reset my wifi password ?

1521
S
Wi-Fi Warriors
A
The Many
admin12The Many
asked in S33 | S34
S33 Packet Loss/Latency & Upstream Power Levels

I previously posted on here because I had issues with my sbg8300 as I was getting under 1% packet loss and latency issues.  I assumed maybe it was the modem since it has a puma chipset and I read about those having issues with packet processing.  Recently got a S33 and it was working great for 2 weeks, then I noticed 1% packet loss in games again, and I ran some tests and realized it was the exact same issue as before. I went to my modem admin page and checked out the power levels and such and noticed that the Upstream does not fall within the range Arris said is acceptable (45-51 dBmv I believe) (my previous SBG8300 also was not in the range).  This makes me think since I got a new modem, maybe xfinity is not delivering the proper power levels.  I was thinking maybe a reverse attenuator could increase it, but I am not sure if I need it or if this is an issue.  Main question: Does the power level falling a few dBmv below the acceptable range cause high latency and ~1% packet loss. If t

3895
S
Wi-Fi Warriors
S
The Many
sethgThe Many
asked in S33 | S34
internet drops on s33

S33 dropping connection, very hot.  I have had it hooked up for 4 days and I get a dropped connection and buffering all the time. I went from 40mbps DSL to 300mbps cable and I feel like I had better internet with the DSL. Modem is running around 160 degrees internally, consistent logs show sync failure SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=[removed personal information];CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1; 31/12/1969 17:00:16 3 CMSTATUS:US_Diplexer_Mode_Change:Init, 5-42MHz. 31/12/1969 17:01:44 3 SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=[removed personal information];CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1; 31/12/1969 17:00:16 3 CMSTATUS:US_Diplexer_Mode_Change:Init, 5-42MHz. 31/12/1969 17:01:41 3 SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=[removed personal information];CMTS-MAC=00:00:00:00:00:00;CM-

3222
S
Wi-Fi Warriors
B
The Many
Bag4mnThe Many
asked in S33 | S34
please help with setup AX6600 with S33

Just set up everything.  I have the s33 and max AX6600. How do I secure my network with name and password? Also, I have 2 routers. One is connected to the modem with ether cable. The second one is just plugged in upstairs.  Is the second one even connected or do I need that connected to an ether cable? How does the second one actually connect? 

902
plemans
Juggernaut
D
The Many
dlin95123The Many
asked in S33 | S34
slow speed on S33

My Xfinity Internet speed has upload speed of 200 Mbps, but I can get only 40Mbps. Their technician came and found his test tool could get 235 Mbps. He thinks something wrong with my S33 modem.Can the S33’s firmware be updated? If yes, how do I do that? Thanks. David

2061
S
Wi-Fi Warriors
R
The Many
RicoBonkThe Many
asked in S33 | S34
S33 Event Log not showing and Arris is aware

As shown in an earlier post, when using Chrome, the Event Log is unavailable. A mod had posted that using a different browser or Incognito mode might help, and that indicated that Arris was aware of the problem. The mod asked for feedback, but the post was closed to comments.Kind of difficult to give feedback if you shut off commenting, isn’t it?I was using Chrome to access, got the same results as the original poster. I switched to MS Edge, and after okaying, gained access, and noted that the Event Log indeed was visible in Edge.The Event Log had been accessible recently, so this problem has only began lately. It would be appropriate for Arris to formally acknowledge it, and take steps to rectify it. Not, ignore it.It is tiresome to, again and again, take “work-arounds” for devices and products sold for hundreds of dollars. Do better.

2091
S
Wi-Fi Warriors
K
The Many
kelfur3The Many
asked in S33 | S34
Unable to connect with tv - S33

I just switched to this new Arris Modem and can’t get my Samsung TV to be recognized For Internet access. It’s connected to the network, but not the Internet.

631
S
Wi-Fi Warriors
C
The Many
CurtmoThe Many
asked in S33 | S34
slow speed internet connection on S33

I messaged Xfinity and I get the same issue.. nothing's wrong with Internet.. ok then why am I getting only 400mbps.. I pay for 1.2 and I'm not even getting 500.. for all that I should just pay for what I am getting.. anyone no how to help me fix my problem 

3162
C
The Many
M
The Many
mbryant36The Many
asked in S33 | S34
S33 Possible Firewall?

Sequence Diagram of my network: ISP → S33 (previously SBG6580) → Google Nest Wifi → wlan local network                                                                                |→ eth0 Raspberry Pi w/ PiHole + PiVPN (port 51820)Background:I currently run a Raspberry Pi with PiVPN on my Spectrum internet. As of last week I purchased a new Surfboard S33 modem and it seemed to have blocked port 51820 OR has done something to conflict with the port management settings I’ve made within my Google Nest Wifi (Connected through 2.5 Gbs port). I’m aware that modems do not have firewalls and the router is what provides this but the only constant for my port being closed has been this modem / the re-activation of my modem with Spectrum. I’ve even reached out 2-3 times to ask if they had anything in place that would block the port when it was re-activated. My previous was a modem/router Surboard SBG6580 (Not 100% on the product code) that connected to my Nest Wifi via Ethernet but this one inc

4412
M
The Many
M
The Many
MjwilandThe Many
asked in S33 | S34
need a phone number to talk to someone

Why is there no phone number to call????

10641
S
Wi-Fi Warriors
B
The Many
Bman22The Many
asked in S33 | S34
s33 blinking green

I just got it today. Talked to rcn registered the Mac it's still just blinking green 

13997
S
Wi-Fi Warriors
B
The Many
Borders67The Many
asked in S33 | S34
No Internet S33 Xfinity

Hi, we just got the Modem S33 with Mesh. We did a walkthrough with Xfinity to activate our Modem. They stated on their end that, it is showing we have service. We have a solid blue light, but when try to connect our devices it say connected but with no Internet. Please Help!! 

3071
S
Wi-Fi Warriors
J
The Many
JosephD9The Many
asked in S33 | S34
Xfinity Gigabit Arris 33 Slow Internet Speeds

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?  

6341
S
Wi-Fi Warriors
G
The Many
GH56The Many
asked in S33 | S34
Need to Return Arris S33 modem

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!

1081
S
Wi-Fi Warriors
J
The Many
jhgThe Many
asked in S33 | S34
Arris modem login page prevents password paste - DECREASES security in S33

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?

1003
F
The Many
C
The Many
CondorThe Many
asked in S33 | S34
trouble connecting Eufy homebase s380- S33

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 s33 assigns that automatically

3782
plemans
Juggernaut
I
The Many
Irishgator06The Many
asked in S33 | S34
cant activate modem

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

872
plemans
Juggernaut
G
The Many
ggt1_02The Many
asked in S33 | S34
S33 Google wifi not recieving internet from modem

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.    

2821
S
Wi-Fi Warriors
B
The Many
blazedsonicThe Many
asked in S33 | S34
ARRIS Surfboard S33 - Xfinity Gigabit x2 Plan

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 Posthttps://www.reddit.com/r/Comcast_Xfinity/comments/17gwl0d/gigabit_internet_upload_speed_increases_in/Another Forum Monitoring Same Topichttps://www.dslreports.com/forum/r33746291-Equip-Mid-Split-Enabled-Device-List-Has-Been-Updated-11-2-23   

17915
D
The Many
J
The Many
jhgThe Many
asked in S33 | S34
S33v2 with Xfinity - 5Mbps upload? slow speed issue

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]; CMTS-MAC=[removed personal information];CM-QOS=1.1;CM-VER=3.1;Can anyone tell if the third me

5724
J
The Many
W
The Many
wills9241The Many
asked in S33 | S34
Xfinity 1200Mbps / 35 Mbps Arris S33 Wired on 300Mbps 2.5Gbps Port - S33

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

1211
S
Wi-Fi Warriors
M
The Many
MikeLaPorteThe Many
asked in S33 | S34
TDS not listed when trying to set up S33 V2 modem

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 

1311
S
Wi-Fi Warriors
J
The Many
jhgThe Many
asked in S33 | S34
Surfboard Central App - S33v2 device registration failed

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?

1601
S
Wi-Fi Warriors
C
The Many
csorgenfThe Many
asked in S33 | S34
S33 Loses all conectivity

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?

1131
S
Wi-Fi Warriors
J
The Many
J.A.The Many
asked in S33 | S34
S33 Modem Rebooting

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 ID Lock Status Modulation Frequency Power SNR/MER Corrected Uncorrectables 37 Locked QAM256 189000000 Hz 2 dBmV 43

2111
S
Wi-Fi Warriors
Terms & ConditionsCookie settings