Not getting more than 200Mbps download on 600Mbps plan

[DS38]

Just upgraded my modem from SB6193 to SB8200 to comply with DOCIS 3.1 but still not getting half the speed. The modem stats are within spec, I think:

Downstream Bonded Channels

Channel ID	Lock Status	Modulation	Frequency	Power	SNR/MER	Corrected	Uncorrectables
29	Locked	QAM256	693000000 Hz	7.4 dBmV	39.0 dB	0	0
2	Locked	QAM256	531000000 Hz	6.2 dBmV	38.5 dB	0	0
3	Locked	QAM256	537000000 Hz	6.0 dBmV	38.6 dB	0	0
4	Locked	QAM256	543000000 Hz	5.7 dBmV	38.5 dB	0	0
5	Locked	QAM256	549000000 Hz	5.7 dBmV	38.7 dB	0	0
6	Locked	QAM256	555000000 Hz	5.3 dBmV	38.5 dB	0	0
7	Locked	QAM256	561000000 Hz	5.3 dBmV	38.7 dB	0	0
8	Locked	QAM256	567000000 Hz	5.5 dBmV	38.7 dB	0	0
9	Locked	QAM256	573000000 Hz	5.7 dBmV	38.9 dB	0	0
10	Locked	QAM256	579000000 Hz	5.9 dBmV	38.9 dB	0	0
11	Locked	QAM256	585000000 Hz	6.3 dBmV	39.0 dB	0	0
12	Locked	QAM256	591000000 Hz	6.5 dBmV	39.1 dB	0	0
13	Locked	QAM256	597000000 Hz	6.8 dBmV	39.1 dB	0	0
14	Locked	QAM256	603000000 Hz	6.7 dBmV	39.1 dB	0	0
15	Locked	QAM256	609000000 Hz	6.7 dBmV	39.2 dB	0	0
16	Locked	QAM256	615000000 Hz	6.8 dBmV	39.1 dB	0	0
17	Locked	QAM256	621000000 Hz	6.9 dBmV	39.1 dB	0	0
18	Locked	QAM256	627000000 Hz	6.8 dBmV	39.0 dB	0	0
19	Locked	QAM256	633000000 Hz	6.8 dBmV	39.1 dB	0	0
20	Locked	QAM256	639000000 Hz	6.3 dBmV	38.9 dB	0	0
21	Locked	QAM256	645000000 Hz	6.5 dBmV	39.0 dB	0	0
22	Locked	QAM256	651000000 Hz	6.4 dBmV	38.8 dB	0	0
23	Locked	QAM256	657000000 Hz	6.3 dBmV	38.8 dB	0	0
24	Locked	QAM256	663000000 Hz	6.4 dBmV	38.7 dB	0	0
25	Locked	QAM256	669000000 Hz	6.6 dBmV	38.9 dB	0	0
26	Locked	QAM256	675000000 Hz	7.0 dBmV	38.5 dB	0	0
27	Locked	QAM256	681000000 Hz	6.8 dBmV	39.1 dB	0	0
28	Locked	QAM256	687000000 Hz	7.1 dBmV	39.2 dB	0	0
30	Locked	QAM256	699000000 Hz	7.5 dBmV	39.1 dB	0	0
31	Locked	QAM256	705000000 Hz	7.3 dBmV	38.9 dB	81	303
32	Locked	QAM256	711000000 Hz	7.3 dBmV	38.9 dB	135	241
37	Locked	Other	762000000 Hz	8.5 dBmV	35.8 dB	493699676	16970

[EG]

They're o/k. Please also post the upstream power level values and the error log entries.

[DS38]

Yes. See below:
Channel Channel ID Lock Status US Channel Type Frequency Width Power
1 5 Locked SC-QAM Upstream 35600000 Hz 6400000 Hz 41.0 dBmV
2 6 Locked SC-QAM Upstream 29200000 Hz 6400000 Hz 42.0 dBmV
3 7 Locked SC-QAM Upstream 22800000 Hz 6400000 Hz 40.0 dBmV
4 8 Locked SC-QAM Upstream 16400000 Hz 6400000 Hz 40.0 dBmV
5 10 Locked SC-QAM Upstream 40400000 Hz 3200000 Hz 40.0 dBmV

[EG]

They're also good. Error log entries ?

[DS38]

Below.

[DS38]

Actually, I don’t know how to get them.

[DS38]

"No Ranging Response received - T3 time-out;CM-MAC=18:9c:27:fb:98:99;CMTS-MAC=00:01:5c:66:42:88;CM-QOS=1.1;CM-VER=3.1;"
01/15/2021 21:19 82000800 3 "16 consecutive T3 timeouts while trying to range on upstream channel 1;CM-MAC=18:9c:27:fb:98:99;CMTS-MAC=00:01:5c:66:42:88;CM-QOS=1.1;CM-VER=3.1;"
01/15/2021 21:19 82000300 3 "Ranging Request Retries exhausted;CM-MAC=18:9c:27:fb:98:99;CMTS-MAC=00:01:5c:66:42:88;CM-QOS=1.1;CM-VER=3.1;"
01/15/2021 21:19 82000200 3 "No Ranging Response received - T3 time-out;CM-MAC=18:9c:27:fb:98:99;CMTS-MAC=00:01:5c:66:42:88;CM-QOS=1.1;CM-VER=3.1;"
01/15/2021 21:18 82000800 3 "16 consecutive T3 timeouts while trying to range on upstream channel 2;CM-MAC=18:9c:27:fb:98:99;CMTS-MAC=00:01:5c:66:42:88;CM-QOS=1.1;CM-VER=3.1;"
01/15/2021 21:18 82000300 3 "Ranging Request Retries exhausted;CM-MAC=18:9c:27:fb:98:99;CMTS-MAC=00:01:5c:66:42:88;CM-QOS=1.1;CM-VER=3.1;"
01/15/2021 21:18 82000200 3

[EG]

Try calling 1-800-comcast and ask a rep to completely remove the modem from your account and to "re-provision" it from scratch. Also ask them to confirm that the provisioning and account data in their database is correct and complete and that the correct configuration / bootfile for your subscribed to speed tier is being pushed to the modem.

[DS38]

I think that I spoke to everyone in the Philippines about that. Every time I call and ask them to make sure that the correct file is being sent I get the runaround and most recently I was sent an article on how to install and where to keep the modem. I feel that I need to speak to a local tech. Has anyone tried and succeeded speaking to the next level tech?

[DS38]

Spoke with Comcast, they had reprovisioned the modem and said they will be sending a technician to check out the wiring. Since I own my own equipment, there may be a charge for checking the connection inside of my home. Urgh!

[DS38]

Guys, seeking advice on how to best prepare for the tech visit. Would the tech be able to do what EG suggested on site?

[DS38]

I am now at a standstill. The tech came out and showed me that he is getting 750Mbps on his testing device, my comp connected directly is topping off at 250Mbps. The tech also said that the 2nd port on SB8200 should be working without the 2nd IP. 

Please help. I bet EG is right in the sense of the correct upload file into the modem, but my tech had zero info to either confirm or deny. He didn't know the answer. 

[ComcastRob]

Hi there! I'd be glad to ensure that this gets looked into further. Please click on my handle (ComcastRob) and send a private message with your name, the complete service address (including city, state, ZIP, suite number, etc), and the phone or account number, and any pertinent details-- like the ticket number(s)-- so we can help.