Hello all, first post here. My internet speed is blast 50/10 Mbps and I was recieving that over the course of two years until some time last night when the internet became unresponsive then came alive with a max speed of 2 Mbps. I have a Moterrola SB6141 and Asus rt-n66u Dark Knight. I live in St. Paul Minnesota. I have turned both the modem and router off for a one minute power cycle, with no change in internet speed twice. When I tried to connect two different laptops to the modem by wire they both said that internet access was limited and had no internet access. My upload speed has been a solid 10 Mbps and is fully functional. I have done multiple speed tests over the course of 12 hours that all had the same speed of 2/10 Mbps and when I performed pingtest I had no lost packets. I have called comcast phone support and we went through the power cycling and connecting laptop directly and they decided to send a tech out to my house tomorrow.
I also have a xfinitywifi hotspot that I can connect to, I assume a neighbor rents out because I provide all my own equipment. Previously I was able to get around 15/5 when connected to the hotspot and now the speed is .73/2.29 Mbps.
Here is some information from my cable modem that might help troubleshoot:
Model Name: SB6141
Vendor Name: Motorola
Firmware Name: SB_KOMODO-1.0.6.14-SCM01-NOSH
Boot Version: PSPU-Boot(25CLK) 1.0.12.18m3
Hardware Version: 7.0
Time Priority Code Message
Feb 26 2015 18:06:42 3-Critical R02.0 No Ranging Response received - T3 time-out;CM-MAC=f8:0b:be:dc:a7:e6;CMTS-MAC=00:1d:70:af:9d:89;CM-QOS=1.1;CM-VER=3.0;
Feb 26 2015 10:26:43 5-Warning Z00.0 MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1;CM-MAC=f8:0b:be:dc:a7:e6;CMTS-MAC=00:1d:70:af:9d:89;CM-QOS=1.1;CM-VER=3.0;
Jan 01 1970 00:00:15 6-Notice N/A Cable Modem Reboot due to power reset ;CM-MAC=f8:0b:be:dc:a7:e6;CMTS-MAC=00:1d:70:af:9d:89;CM-QOS=1.1;CM-VER=3.0;
Feb 26 2015 09:47:15 5-Warning Z00.0 MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1;CM-MAC=f8:0b:be:dc:a7:e6;CMTS-MAC=00:1d:70:af:9d:89;CM-QOS=1.1;CM-VER=3.0;
Jan 01 1970 00:00:15 6-Notice N/A Cable Modem Reboot due to power reset ;CM-MAC=f8:0b:be:dc:a7:e6;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.0;
Feb 26 2015 08:13:33 3-Critical R02.0 No Ranging Response received - T3 time-out;CM-MAC=f8:0b:be:dc:a7:e6;CMTS-MAC=00:1d:70:af:9d:89;CM-QOS=1.1;CM-VER=3.0;
Feb 26 2015 01:25:05 5-Warning Z00.0 MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1;CM-MAC=f8:0b:be:dc:a7:e6;CMTS-MAC=00:1d:70:af:9d:89;CM-QOS=1.1;CM-VER=3.0;
Jan 01 1970 00:03:45 3-Critical D12.2 DHCP failed - DHCP Solicit sent, No DHCP Advertise received;CM-MAC=f8:0b:be:dc:a7:e6;CMTS-MAC=00:1d:70:af:9d:89;CM-QOS=1.1;CM-VER=3.0;
Jan 01 1970 00:00:30 3-Critical R02.0 No Ranging Response received - T3 time-out;CM-MAC=f8:0b:be:dc:a7:e6;CMTS-MAC=00:1d:70:af:9d:89;CM-QOS=1.1;CM-VER=3.0;
Jan 01 1970 00:00:15 6-Notice N/A Cable Modem Reboot from shell ;CM-MAC=f8:0b:be:dc:a7:e6;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.0;
Feb 26 2015 01:20:24 6-Notice E112.0 SW download Successful - Via Config file
Feb 26 2015 01:19:02 6-Notice E102.0 SW Download INIT - Via Config file d11_m_sb6141_speedtierextreme2_c01.cm
Feb 26 2015 01:18:53 3-Critical R02.0 No Ranging Response received - T3 time-out;CM-MAC=f8:0b:be:dc:a7:e6;CMTS-MAC=00:1d:70:af:9d:89;CM-QOS=1.1;CM-VER=3.0;
Feb 26 2015 01:18:49 5-Warning Z00.0 MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1;CM-MAC=f8:0b:be:dc:a7:e6;CMTS-MAC=00:1d:70:af:9d:89;CM-QOS=1.1;CM-VER=3.0;
Jan 01 1970 00:53:44 3-Critical R02.0 No Ranging Response received - T3 time-out;CM-MAC=f8:0b:be:dc:a7:e6;CMTS-MAC=00:1d:70:af:9d:89;CM-QOS=1.1;CM-VER=3.0;
Jan 01 1970 00:00:15 6-Notice N/A Cable Modem Reboot due to T4 timeout ;CM-MAC=f8:0b:be:dc:a7:e6;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.0;
Feb 26 2015 00:19:06 3-Critical R04.0 Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=f8:0b:be:dc:a7:e6;CMTS-MAC=00:1b:d5:ff:05:66;CM-QOS=1.1;CM-VER=3.0;
Feb 26 2015 00:18:13 5-Warning T202.0 Lost MDD Timeout;CM-MAC=f8:0b:be:dc:a7:e6;CMTS-MAC=00:1b:d5:ff:05:66;CM-QOS=1.1;CM-VER=3.0;
Feb 26 2015 00:17:50 3-Critical T05.0 SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=f8:0b:be:dc:a7:e6;CMTS-MAC=00:1b:d5:ff:05:66;CM-QOS=1.1;CM-VER=3.0;
Feb 20 2015 05:14:36 3-Critical R02.0 No Ranging Response received - T3 time-out;CM-MAC=f8:0b:be:dc:a7:e6;CMTS-MAC=00:1b:d5:ff:05:66;CM-QOS=1.1;CM-VER=3.0;
Downstream Bonding Channel Value
Channel ID 30 25 26 27 28 29 31 32
Frequency 639000000 Hz 609000000 Hz 615000000 Hz 621000000 Hz 627000000 Hz 633000000 Hz 645000000 Hz 651000000 Hz
Signal to Noise Ratio 38 dB 38 dB 38 dB 38 dB 38 dB 38 dB 38 dB 38 dB
Downstream Modulation QAM256 QAM256 QAM256 QAM256 QAM256 QAM256 QAM256 QAM256
Power Level
The Downstream Power Level reading is a snapshot taken at the time this page was requested. Please Reload/Refresh this Page for a new reading
8 dBmV 8 dBmV 8 dBmV 8 dBmV 8 dBmV 8 dBmV 8 dBmV 8 dBmV
Upstream Bonding Channel Value
Channel ID 6 5 7 8
Frequency 31150000 Hz 37800000 Hz 24500000 Hz 17850000 Hz
Ranging Service ID 136 136 136 136
Symbol Rate 5.120 Msym/sec 5.120 Msym/sec 5.120 Msym/sec 5.120 Msym/sec
Power Level 34 dBmV 34 dBmV 34 dBmV 34 dBmV
Upstream Modulation [3] QPSK
[3] 64QAM
[3] QPSK
[3] 64QAM
[3] QPSK
[3] 64QAM
[3] QPSK
[3] 64QAM
Ranging Status Success Success Success Success
Signal Stats (Codewords) Bonding Channel Value
Channel ID 30 25 26 27 28 29 31 32
Total Unerrored Codewords 1256536724 1256547284 1256555462 1256564526 1256530885 1256531898 1256535214 1256563250
Total Correctable Codewords 508 0 8 10 88 233 808 1221
Total Uncorrectable Codewords 653 544 539 571 692 676 645 701
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