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S33 | S34

DOCSIS® 3.1 Gigabit Cable Modem

  • 393 Topics
  • 1,026 Replies
393 Topics
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The Many
apoe9365The Many
asked in S33 | S34
2.5g lights not working on S33

I am linked with my eero pro 6e router through the 2.5g port but there are no link lights. I also noticed when I boot the modem there are no lights on the 2.5g port but the 1g port has lights. Any thoughts?

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Wi-Fi Warriors
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KRSmith84The Many
asked in S33 | S34
S33v2 Keeps Dropping Internet Connection

I am having a recurring problem. At random times, my S33v2 Modem will lose its connection to the internet. No warning, and no clue why it is happening. Power cycling the modem restores its connection, and my ISP cannot detect any problems. I run the modem through an ASUS Wi-Fi Router, and when the connection drops, we still have network access, so I know the router isn’t the issue. I have looked through a few threads, and have accessed the Web Manager to check the signal power levels. The downstream power levels and SNR levels are within the recommended range. The upstream power levels however, are within the acceptable range (35 - 50 dBmV) according to my ISP (Xfinity), but NOT within the range suggested by the manufacturer (45 - 51 dBmV). Picture below. I have done a hard reset of the modem, via the reset switch on the bottom, but nothing changed. I am at my wits end with this, because there is no predicting it, and I’d like to avoid buying a new modem if possible. This one still wor

343
plemans
Juggernaut
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The Many
MelissaosuThe Many
asked in S33 | S34
no ethernet port

I do not have an ethernet port on my laptop. How can I set up the modem? I cannot reach the manager page.

263
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Wi-Fi Warriors
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The Many
apoe9365The Many
asked in S33 | S34
only getting partial web manager on S33

Any ideas?

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JmillsThe Many
asked in S33 | S34
ISP shows signal to S33 but no connection

Breezeline shows signal to my S33 but have no connectivity through eero router or through direct hardwire to the modem!

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darwinsteadThe Many
asked in S33 | S34
Arris iPhone App does not work

Replaced an older Surfboard with a new Surfboard and the new Arris iPhone app doesn’t facilitate syncing the two. Any suggestions or help making them work together would be greatly appreciated.

294
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Wi-Fi Warriors
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The Many
sukstobejbThe Many
asked in S33 | S34
Request RMA, defective S33

Doesn’t seem to be an easy way to request RMA. Surfboard S33v2, already registered, amazon purchase less than 2 years ago. Spectrum internet, lost connection, multiple power offs and tried reset button. When powering on, green light immediately comes on and stays on, doesn’t blink or appear to attempt to connect to spectrum. Multiple reboots same result. Purchased new S33 and quickly activated new modem and new modem is working fine. Request replacement on old defective S33.

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Wi-Fi Warriors
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The Many
NrightinheadThe Many
asked in S33 | S34
S34 Xfinity says it does not support it

Spent a lot of time on this and you have no number to call, not starting out well. Xfinity says they do not support the s34.

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Wi-Fi Warriors
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roguebearThe Many
asked in S33 | S34
Arris S34 Web Manager Locked Out

I am beyond frustrated here. To preface, I have the worst ISP possible - Zito Media. I honestly feel like Zito is the culprit but they refuse to provide any useful information. I own this modem and intentionally bought it so I could drop the rental Zito modem. I want to access the web manager to alter settings as needed. However, I cannot get into my modems manager. 192.168.100.1 just gives me a “hmm...can’t reach this page” message. Ipconfig tells me my default gateway is 192.168.4.1 (which doesn’t work either of course). I tried to reset the modem and for a very brief 2 minutes I was able to get into the manager but as soon as it reconnected to my ISP the manager connection terminated and displayed the “hmm...can’t reach this page” message again. Please help!

392
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Wi-Fi Warriors
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The Many
diittoThe Many
asked in S33 | S34
Older surfboard (DOCSIS 3.0) (SB6141) and how it supplies a valid IP to my ASUS router??

I am about to replace my outdated SB6141 Cable Modem (Xfinity is the ISP) with a new S34 Arris cable modem. But before I make the swap, I need to try to understand what happened yesterday…. The SB6141 lost connectivity and it spent hours booting successfully through “Power”, “Receive” and “Send” but then when it got to step 4, the “online” connection, it would flicker a lot with the blue activity light flicker a lot too…. Appeared to me it was trying to talk to my ASUS router (model # RT-BE88U) but was having no success…. It would try for a while and then do a reset and start over…. Did that maybe 100 times…. I then unplugged the router by unplugging the Ethernet cable at the back of the modem…. It then booted and came up to fully booted in no time at all…. Whoa…. Doesn’t like the router…. But it has connected to it many time over the past few months since I bought this new ASUS router…. Had an Apple router on this system before and it worked for nearly 10 years with this same, old cab

395
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The Many
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The Many
Jennifer McDowellThe Many
asked in S33 | S34
wonky internet

I have called my internet provider. Tech has been to house. Restarted modem. Still, the internet goes on and off. Blue light. Says it’s on. But, no devices work using wifi. Modem only 1 year old. Suggestions?

401
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Wi-Fi Warriors
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The Many
Pop19622The Many
asked in S33 | S34
intermittent connectivity

I have no wi-fi, Xfinity verified service is working. After repeated reboots of Arris Surfboard, cable tv ( direct connected to Arris) sometimes works. Wi-fi does not connect. Direct connect to laptop computer does not connect to internet. Help?

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Wi-Fi Warriors
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The Many
Edwin RinconThe Many
asked in S33 | S34
nombre de usuario S33

No me aparece mi nombre de usuario

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Wi-Fi Warriors
A
The Many
andrews1434The Many
asked in S33 | S34
S34 IP address configuration setting

Is there a way to change the IP address on an S34 Cable Modem?

391
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Wi-Fi Warriors
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matric1The Many
asked in S33 | S34
No lights- S33v2

I just received my S33 today. Yet, when I plugged it in there isn’t a single light that is on.

193
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Wi-Fi Warriors
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thedjsinsThe Many
asked in S33 | S34
S33 missing OFDMA Upstream channel

This has been ongoing for a long time now, just now doing research though. Had Xfinity re-provision twice and also reset to factory settings with no luck, they told me they see OFDMA on channel 43 but I’m not seeing it on my end at all, will post the logs of the boot up and provision. Cannot exceed 40 Mbps upload and very random download speeds as well. Any help is appreciated! Event Log

335
plemans
Juggernaut
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The Many
KTDILLON53The Many
asked in S33 | S34
Recently purchased S34 ,CORRCT CABLE MODEM with wifi feature.

About a year ago we were told our cable modem, model SBG7600AC2, was obsolete and would need to be replaced. We have two computers, some TV’s and a couple of tablets as part of our home network. We just recently decided to swap it out with an S34. When I looked at the package, I noticed the box says we need a WI Router for whole home networking. This leads me to believe I bought the incorrect cable. If so what version would be best to purchase?

401
plemans
Juggernaut
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The Many
LouieramosjrThe Many
asked in S33 | S34
set up of arris s33 - need wifi name

I just purchased an Arris S33. It did not come with a user manual. According to Xfinity, I need the WiFi name and pswd of the device. How do I get this?

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plemans
Juggernaut
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The Many
sammynThe Many
asked in S33 | S34
S33/S34 Complete Specifications

Hello, I couldn’t find the complete specifications of these modems. Does anyone have it or know where to find them? Thanks

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Wi-Fi Warriors
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The Many
daraghThe Many
asked in S33 | S34
constant rebooting on S33

S33v2 on Astound Reboots at least 5 times a day since 1/1/25 ISP tech came out and replaced with their modem. Everything works great now Will never buy Arris again. Mobile app is a joke

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rhmacdonaldThe Many
asked in S33 | S34
S33 Restarts Multiple Times ADay - Error in Event Log

I have a surfboard S33 that I’ve been using for about a year now. I guess I’ve been tardy in reporting this issue. The modem keeps rebooting multiple times during the day and the restart usually takes about 5-7 minutes. I’ve spoken with Comcast about this and they indicated that everything looks good from their end. They aren’t not seeing any errors being reported to them. The S33 is a replacement for an earlier modem that I had. I worked with Comcast and we reinstalled that modem and everything worked fine so it doesn’t appear to be an issue with the connection from Comcast. I use the previous modem for almost 8 years with no issues at all on the line. Well, I checked the Event Log today and it seems that there are multiple errors and that the date of the device keeps getting reset to 12/31/1969… see the attached screenshot. Please let me know how I can initiate warranty support for this before my warranty expires.

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Wi-Fi Warriors
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The Many
phyc278The Many
asked in S33 | S34
New S33 with Xfinity - Event log: Config File Rejected due to Invalid or Unexpected TLV 11

Event log shows: 02/26/2025 11:05:05 Critical Config File Rejected due to Invalid or Unexpected TLV 11;CM-MAC= {edit : personal information} 02/26/2025 11:05:05 Notice TLV-11 - unrecognized OID;CM-MAC= {edit : personal information} What does this mean? I have 1.2Gbps service from Xfinity. Wired speed test with one device attached directly to modem is 460mbps.

721
plemans
Juggernaut
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The Many
Governator660The Many
asked in S33 | S34
Surfboard S33 cable modem

I just bout a refurbished S33 cable modem on Amazon. Is there a light that comes on when plugged in. No light illuminated on mine. Larry

151
plemans
Juggernaut
B
The Many
bac32904The Many
asked in S33 | S34
Connecting 2 Wifi routers to an S34 Modem

Good morning, Can anyone please tell me if I can readily connect 2 WiFi routers (one to each Ethernet port) on an S34 modem? I have a detached garage and want to have a separate (from the house) LAN in it. Thank you.

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The Many
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mibby
asked in S33 | S34
Is it possible to disable the LED blinking on the WAN ethernet port?

I have “Front Panel Lights” set to “Off under normal conditions” to disable the front LED indicator. This works wonderfully. However the WAN ethernet port’s LED is still present. With the 2.5Gb port connected to my mesh network, the LED constantly flashes green non-stop to indicate traffic. This is very distracting at night. Is it possible at all to force a solid color or add an option to disable the LED under working conditions?

181
plemans
Juggernaut

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