Skip to main content
Solved

SB8200 - Internet dropping frequently

P
The Many
Forum|alt.badge.img

Hello,

I have been having internet issues for a couple weeks, it will randomly drop for less than a couple minutes and come back, there is zero consistency on when it happens. Just enough time to get kicked from a game, for my phone to reject the wifi, etc. Cox is basically no help and just tells me to buy a new modem with zero reasoning as to why, they just want my to buy their hardware and I refuse. My modem is about 4 ½ years old.

 

These are the logs I got from event log today after my internet cut out, do they show anything?

 

6/5/2024
17:58:43    3    Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=*;CMTS-MAC=*;CM-QOS=1.1;CM-VER=3.1;
6/5/2024
17:58:43    3    Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=*;CMTS-MAC=*;CM-QOS=1.1;CM-VER=3.1;
6/5/2024
17:58:43    3    16 consecutive T3 timeouts while trying to range on upstream channel 8;CM-MAC=*;CMTS-MAC=*;CM-QOS=1.1;CM-VER=3.1;
6/5/2024
18:35:27    6    TLV-11 - unrecognized OID;CM-MAC=*;CMTS-MAC=*;CM-QOS=1.1;CM-VER=3.1;
6/5/2024
18:35:33    6    DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=*;CMTS-MAC=*;CM-QOS=1.1;CM-VER=3.1;
6/5/2024
18:35:34    6    DS profile assignment change. DS Chan ID: 33; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=*;CMTS-MAC=*;CM-QOS=1.1;CM-VER=3.1;
6/5/2024
18:35:40    5    RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=*;CMTS-MAC=*;CM-QOS=1.1;CM-VER=3.1;
6/5/2024
18:35:40    5    Dynamic Range Window violation
6/5/2024
18:36:46    6    US profile assignment change. US Chan ID: 8; Previous Profile: 13; New Profile: 9 13.;CM-MAC=*;CMTS-MAC=*;CM-QOS=1.1;CM-VER=3.1;
6/5/2024
18:40:02    5    RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=*;CMTS-MAC=*;CM-QOS=1.1;CM-VER=3.1;
6/5/2024
18:40:02    5    Dynamic Range Window violation
6/5/2024
18:54:41    5    RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=*;CMTS-MAC=*;CM-QOS=1.1;CM-VER=3.1;
6/5/2024
18:54:41    5    Dynamic Range Window violation
 

Best answer by SURFboard Moderator

Since you are experiencing intermittent internet connection, could you let us know whether the modem is connected with any router?

Also, on the cable signal levels, the upstream power level is not in a range; it should be greater than 45 dBmv. I suggest contacting the internet service provider to adjust the signals in range or to reprovision the modem.

View original
Did this topic help you find an answer to your question?
This topic has been closed for comments

4 replies

P
The Many
Forum|alt.badge.img
  • PJeezy710The Many
  • Author
  • The Many
  • 2 replies
  • May 7, 2024

Here are my power levels:

 

S
Wi-Fi Warriors
Forum|alt.badge.img+42

Since you are experiencing intermittent internet connection, could you let us know whether the modem is connected with any router?

Also, on the cable signal levels, the upstream power level is not in a range; it should be greater than 45 dBmv. I suggest contacting the internet service provider to adjust the signals in range or to reprovision the modem.

SURFboard Community Moderator Team
P
The Many
Forum|alt.badge.img
  • PJeezy710The Many
  • Author
  • The Many
  • 2 replies
  • May 7, 2024

My modem is connected to an Asus RT-AX86U

 

It happened again last night and the only additional log entries were 2 "US profile assignment changes". Does that correlate with the weak upstream signal?

 

Any recommendations on talking to Cox support about this? It seems like all they know how to do is reset my modem from their end or try and sell me panorama hardware.

 

S
Wi-Fi Warriors
Forum|alt.badge.img+42

An intermittent internet connection will start if the cable signal levels are not within a range.

I suggest connecting the modem to the computer through a hardwired connection and checking whether you are experiencing intermittent internet connection.

 

SURFboard Community Moderator Team

Most helpful members this week

Terms & ConditionsCookie settings

Cookie policy

We use cookies to enhance and personalize your experience. If you accept you agree to our full cookie policy. Learn more about our cookies.

 
Cookie settings