much slower speed on newly provisioned SB6121

[j7654321]

Hello everyone,

I have the starter tier business service. With the rental SMCD3G, I got around 30 Mbps download and 3Mbps upload.

After having my new Moto SB6121 provisioned yesterday, I only get 24.08/1.37Mbps.

Comcast business tier-1 tech support assured that the modem was provisioned properly and said that they did not have access to the provisioned SB6121 so nothing they could do. Motorola tech support checked downstream/upstream SNR and power level and they looked fine, as shown below.

I'd appreciate very much that if anyone can help me to find out the possible couse of the poor performance on the SB6121.

Thank you very much in advance.

Downstream Bonding Channel Value

Channel ID	2	4	6	8
Frequency	567000000 Hz	579000000 Hz	591000000 Hz	603000000 Hz
Signal to Noise Ratio	37 dB	37 dB	37 dB	37 dB
Downstream Modulation	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	3 dBmV	2 dBmV	2 dBmV	3 dBmV

Upstream Bonding Channel Value

Channel ID	9	7	8
Frequency	37000000 Hz	25300000 Hz	30600000 Hz
Ranging Service ID	2904	2904	2904
Symbol Rate	5.120 Msym/sec	2.560 Msym/sec	5.120 Msym/sec
Power Level	48 dBmV	47 dBmV	47 dBmV
Upstream Modulation	[3] QPSK [3] 64QAM	[3] QPSK [2] 16QAM [3] 64QAM	[3] QPSK [3] 64QAM
Ranging Status	Success	Success	Success

Signal Stats (Codewords) Bonding Channel Value

Channel ID	2	4	6	8
Total Unerrored Codewords	87919537	87100994	87101172	87101262
Total Correctable Codewords	14	1	1	0
Total Uncorrectable Codewords	616	546	514	571

[j7654321]

Hello everyone,

I have the starter tier business service. With the rental SMCD3G, I got around 30 Mbps download and 3Mbps upload.

After having my new Moto SB6121 provisioned yesterday, I only get 24.08/1.37Mbps.

Comcast business tier-1 tech support assured that the modem was provisioned properly and said that they did not have access to the provisioned SB6121 so nothing they could do. Motorola tech support checked downstream/upstream SNR and power level and they looked fine, as shown below.

I'd appreciate very much that if anyone can help me to find out the possible couse of the poor performance on the SB6121.

Thank you very much in advance.

Downstream Bonding Channel Value

Channel ID	2	4	6	8
Frequency	567000000 Hz	579000000 Hz	591000000 Hz	603000000 Hz
Signal to Noise Ratio	37 dB	37 dB	37 dB	37 dB
Downstream Modulation	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	3 dBmV	2 dBmV	2 dBmV	3 dBmV

Upstream Bonding Channel Value

Channel ID	9	7	8
Frequency	37000000 Hz	25300000 Hz	30600000 Hz
Ranging Service ID	2904	2904	2904
Symbol Rate	5.120 Msym/sec	2.560 Msym/sec	5.120 Msym/sec
Power Level	48 dBmV	47 dBmV	47 dBmV
Upstream Modulation	[3] QPSK [3] 64QAM	[3] QPSK [2] 16QAM [3] 64QAM	[3] QPSK [3] 64QAM
Ranging Status	Success	Success	Success

Signal Stats (Codewords) Bonding Channel Value

Channel ID	2	4	6	8
Total Unerrored Codewords	87919537	87100994	87101172	87101262
Total Correctable Codewords	14	1	1	0
Total Uncorrectable Codewords	616	546	514	571

[Comcast_John]

Welcome j7654321.  Our Regional Tier 2 informed us that they are working with you to resolve this issue.  Please let us know if additional assistance is required.

Thank You

[j7654321]

Tier-2 tech support called and reprovisioned the modem and solved the problem. Thanks.