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S33 | S34

DOCSIS® 3.1 Gigabit Cable Modem

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S33 | S34 Announcement (2)

397 Topics
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 dB 0 0 5 Locked QAM256 759000000 Hz

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S
Wi-Fi Warriors
D
The Many
daraghThe Many
asked in S33 | S34
S33 Event Log not showing

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

824
S
Wi-Fi Warriors
R
The Many
rspoelstraThe Many
asked in S33 | S34
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.

2543
plemans
Juggernaut
D
The Many
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 logs CMSTATUS:DS_Diplexer_Mode_Change_Ignored CMSTATUS:US_Diplexer_Mode_Change SYNC 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

5794
S
Wi-Fi Warriors
C
The Many
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.

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S
Wi-Fi Warriors
D
The Many
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.

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plemans
Juggernaut
K
The Many
KandKThe Many
asked in S33 | S34
S33 power on Failure

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.

1983
K
The Many
D
The Many
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

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plemans
Juggernaut
M
The Many
MayhemThe Many
asked in S33 | S34
S33 modem - Xfinity (AGAIN) - csn i get more than 275mbps?

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??

2789
plemans
Juggernaut
C
Button Mashers
cwillozButton Mashers
asked in S33 | S34
activating s33 on cox

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.

3734
C
Button Mashers
G
The Many
gt5017dThe Many
asked in S33 | S34
S33 white (but pale green) status light and high pitched noise

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?

12791
plemans
Juggernaut
S
The Many
smitty2510The Many
asked in S33 | S34
No Wi-Fi connection on S33

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.

4372
LoveMyLab
Guardians of the Gateways
R
The Many
Rredford73The Many
asked in S33 | S34
comcast not finding mac address for s33 modem

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

7084
Nandor DeLaurentis
The Many
Y
The Many
YamIDoingThis2myselfThe Many
asked in S33 | S34
I just want to test my internet speed from my modem.

I went to my computer and put in the usual 198.168.100.1 and password wasn’t my password but the last 8 of the S/N so I get that straightened out and then it says for a better experience and more options use the app. On my web page there’s no way or option to test my speed from my provider to Xfinity that I could find. Under status there’s bonded channel’s both up and down, frequency, db’s, power and a lot of locked things that I have no idea what they mean, but nothing on the actual speed? Under event log apparently a lot happened in 1969. So I go to the app and in order to check my network I have to ok for this “third party” to look at my network with agreements written by lawyers for lawyers that I need to ok. So I ok it and it searches through all my personal private parts and then list’s what’s on my network but doesn’t list the modem itself, my router is there and everything else but not the actual modem that I want the information from. On the home page it has My Network but onl

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plemans
Juggernaut
S
The Many
StaceyThe Many
asked in S33 | S34
arris s33 trashed?

Hi my modem started flashing at the power source (on the plug-blue light) and at the base in white (Amber). We got a new smart washing machine that shared the same outlet the same day the modem seemed to be dead. The modem used to be on a power strip extension and it was moved to the direct plug. wont reset with the button. is it fried?

1584
S
The Many
2
The Many
2lazy2pThe Many
asked in S33 | S34
Unable to Delete Modem from Surfboard Central App - S33

I replaced the SB8200 modem with the S33 modem. In the app I click on REMOVE DEVICE, select the 8200, and click on NEXT. I click on YES in the “You are about to delete the last installed device.” The screen returns to the My Network screen and still shows the SB8200. I then tried Add Device, and the two choices are SURFboard mAX or Gaming Bridge or Network Upgrade Kit. Neither relate to the new S33 modem. Is it a waste of time to even use the app?

681
N
Rockstar!
G
The Many
GregThe Many
asked in S33 | S34
How to change serial number - S33

How do I change the serial number for my S33 modem? The scanner grabbed the wrong number for my serial number. Thanks.

502
N
Rockstar!
D
The Many
Dartboy09The Many
asked in S33 | S34
s33 comcast not interbet

Hello all. I recently purchased an s33 to replace comcast modem. using the surfboard app and Xfinity app, I was able to get the s33 modem connected, blue light and the Xfinity app showed it. I didn’t have internet though. so it got me thinking, I need a router. I pulled out an old Cisco router I have, connected port FE0/1 and set it for “ip addres dhcp”, it won’t obtain an ip. after hours of frustration, I connected the Comcast modem back up, Cisco router obtained an ip from it. what am I doing wrong? Missing? thanks.

1591
LoveMyLab
Guardians of the Gateways
M
The Many
Mike FThe Many
asked in S33 | S34
Workaround for Xfinity limiting S33 modem to single active ethernet port?

I have an S33 modem I recently installed only to find that Xfinity will only allow a single public IP address for non-Xfinity modems (obviously to encourage you to rent their modems….). This effectively disables the 2nd ethernet port. Has anyone come up with a simple way to get around this and utilize both ports?

87310
plemans
Juggernaut
K
The Many
K0tThe Many
asked in S33 | S34
Why does my Arris S33 modem keep resetting out of random?

My family bought an Arris S33 Modem and it just keeps randomly resetting and I’m confused by it, we changed the power source to an outlet but it still resets, we keep it cooled as well but it still resets. I’m completely stumped on why it keeps resetting and I need help resolving this issue.

24257
K
The Many
S
The Many
sneffy80The Many
asked in S33 | S34
new Arris S33 gets new profile every few hours Spectrum

Just bought this modem the other day. Spectrum shows good signal on their side, I can see from the modem diag page the signals are within spec but for some reason, every few hours, it tries to get a new profile. Logs below are from in between WebGUI logins within a few hours. (edit: CM-MAC information removed by the moderator) 18/9/2023 07:29:51 3 Successful LAN WebGUI login from ***.***.***.*** on 23/09/18 at 7:29 AM. 31/12/1969 19:00:16 3 CMSTATUS:US_Diplexer_Mode_Change:Init, 5-42MHz. 31/12/1969 19:00:20 3 SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1; 31/12/1969 19:00:23 3 CMSTATUS:US_Diplexer_Mode_Change:TLV-9, 5-85MHz. 18/9/2023 07:34:05 3 CMSTATUS:US_Diplexer_Mode_Change:TLV-9, 5-85MHz. 18/9/2023 08:00:35 3 Successful LAN WebGUI login from ***.***.***.*** on 23/09/18 at 8:00 AM. 18/9/2023 09:15:25 3 Successful LAN WebGUI login from ***.***.***.*** on 23/09/18 at 9:15 AM. 3

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S
The Many
T
The Many
TheAsianThe Many
asked in S33 | S34
s33 1gb port not working

I just purchased the s33v2 modem. My old SB8200 worked just fine with both ports, but I wanted to upgrade because I wanted to get full use out of my internet speeds. I have xfinity gigabite internet. I do have a 2nd IP for my account, one hardwired to my tower, one hardwired to the wifi. The 1gb port isn’t sending signal to the wifi router. I called comcast thinking it might be something on their end, new modem and all, but they did everything on their end and believe its a hardware issue, not their end. Any advice would be appreciated.

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S
Wi-Fi Warriors
I
The Many
IAMxWOLFMANThe Many
asked in S33 | S34
S33 unable to activate

I recently bought an S33 earlier this month (link). But I am unable to get it activated through Xfinity despite numerous phone calls and having a tech out to my home. They were confident that the modem was bad. Is there any way to tell if this is true? I took some screen shots from the Web UI. (edit: Images containing serial number and MAC addresses removed by the moderator) Is there anything listed here that would indicate if the modem is bad? Or is the ISP at fault? Thank you!

7037
I
The Many
G
The Many
grantdray2The Many
asked in S33 | S34
Arris Modem getting hot and slow speed S33

Hi! I use eero pro 6e and I’m not getting the over 1 GB for wired in a 2.5 gb port. Anyway can get a replacement? This unit feels hot as well. no longer need this question.

6381
LoveMyLab
Guardians of the Gateways
S
The Certified
sjalguireThe Certified
asked in S33 | S34
S33 not using an IP address that anything can recognize.

It assigned 96.29.42.82 but my Unifi USW Lite 8 router, Unifi access points, or any of my computers alone can recognize it.

1314
LoveMyLab
Guardians of the Gateways

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