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Hello,

I’ve 1Gbps/350Mbps internet now. I bought S33v3 to support this tier since MB8600 didn’t work good with it. But the upload appear to be limited around 45Mbps. ISP tech checked everything and I couldn’t find a problem and said this modem doesn’t support the higher upload speed.  Based on the event log, I think the correct config is not in place because some issue with either modem or the provisioning itself. I can’t believe S33 can’t support higher speed.

Can someone tell what’s wrong here ? Thanks you

 

02/03/2025 11:36:18	Error	Improper Configuration File CVC Format

02/03/2025 11:36:18	Critical	Config File Rejected due to Invalid or Unexpected TLV 11;CM-MAC=X;CMTS-MAC=X:4b;CM-QOS=1.1;CM-VER=3.1;

02/03/2025 11:36:18	Notice	TLV-11 - unrecognized OID;CM-MAC=X:a3;CMTS-MAC=X

02/03/2025 11:36:18	Warning	MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1

02/03/2025 11:35:55	Error	Missing Mandatory MDD TLV on primary DS Channel;CM-MAC=X;CMTS-MAC=X;CM-QOS=1.1;CM-VER=3.1;

MB8600 used to show 2x OFDM PLC channels and 1x OFDMA channel. S33 won’t show OFDMA channel.

 

 

 

who’s your isp?

Because the S33 isn’t approved on most ISp’s for the increased upload. 

ISP is Midcontinent Communications and S33v3 is approved modem on their list.

I called Surfboard support they said S33 doesn’t support upload speed more than 42-45Mbps

while its on their approved list, it doesn’t have the check mark that’d I’d assume is for increased speeds. 

Approved Modems | Midco Internet Support

 

S34 is supposed to on the list which supports higher upload speeds but unfortunately it is not. Who knows when Midco will  approve it. I just don’t know why MB8600 had this problem at the first place which I  was using before. The internet will stuck often in download area and this problem started after Midco upgraded the tier from 750/200 to 1Gb/350 .

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