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user_bntk76
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Saturday, October 19th, 2024 4:28 AM

Arris Surfboard SB8200 Modem Question

I recently replaced my Arris Surfboard SB8200 modem that I have been using for several years. It was apparently defective as I was only getting a download speed of around 40 Mbps from it for the past several weeks when I pay for 500 Mbps speed. An Xfinity technician came out and checked the speed of the cable going into the modem, which was fine. I use a Netgear Orbi RBR50 mesh network for WiFi. The download light on my older SB8200 has always been blue, indicating that I was getting DOCSIS 3.1. I just installed a new SB8200 to replace the defective SB8200. The speed tests that I performed using the Orbi test shows that I am getting download speeds of about 550 Mbps, which  is the same speed results with my old modem when it was working properly. However, the download light on the new SB8200 is green, indicating that I am getting DOCSIS 3.0 now. I called Arris and they told me that they have no control over Xfinity using DOCSIS 3.0 vs. 3.1. And they could not explain the reason for the change, suggesting that I call Xfinity and ask them about the change.

Any feedback as to the change with the new modem indicating DOCSIS 3.0?  Thank you.

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1 month ago

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EG

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107.1K Messages

1 month ago

What do the modem's signal status values look like ? Try getting them here; http://192.168.100.1 

Please copy all of the text in its entirety of the *Downstream Power Levels*, the *SNR's* (Signal to Noise Ratios), and the *Upstream Power Level* numbers and paste them into your next post.

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user_bntk76

2 Messages

@EG​ Please see below:

Connection

The status listed show the connection state of the cable modem. They are used by your service provider to evaluate the operation of the cable modem.

Startup Procedure
Procedure Status Comment
Acquire Downstream Channel 507000000 Hz Locked
Connectivity State OK Operational
Boot State OK Operational
Configuration File OK
Security Enabled BPI+
DOCSIS Network Access Enabled Allowed

Downstream Bonded Channels
Channel ID Lock Status Modulation Frequency Power SNR/MER Corrected Uncorrectables
5 Locked 256QAM 507000000 Hz -5 dBmV 37 dB 9 0
2 Locked 256QAM 483000000 Hz -5 dBmV 38 dB 7 0
3 Locked 256QAM 489000000 Hz -5 dBmV 37 dB 0 0
4 Locked 256QAM 495000000 Hz -5 dBmV 37 dB 0 0
6 Locked 256QAM 513000000 Hz -5 dBmV 38 dB 2 0
7 Locked 256QAM 519000000 Hz -5 dBmV 37 dB 0 0
8 Locked 256QAM 525000000 Hz -5 dBmV 37 dB 1 0
9 Locked 256QAM 531000000 Hz -6 dBmV 38 dB 1 0
10 Locked 256QAM 537000000 Hz -6 dBmV 37 dB 2 0
11 Locked 256QAM 543000000 Hz -5 dBmV 37 dB 3 0
12 Locked 256QAM 549000000 Hz -5 dBmV 38 dB 2 0
13 Locked 256QAM 555000000 Hz -5 dBmV 37 dB 3 0
14 Locked 256QAM 561000000 Hz -5 dBmV 37 dB 1 0
15 Locked 256QAM 567000000 Hz -5 dBmV 37 dB 0 0
16 Locked 256QAM 573000000 Hz -5 dBmV 37 dB 0 0
17 Locked 256QAM 579000000 Hz -5 dBmV 38 dB 0 0
18 Locked 256QAM 585000000 Hz -4 dBmV 37 dB 1 0
19 Locked 256QAM 591000000 Hz -4 dBmV 37 dB 0 0
20 Locked 256QAM 597000000 Hz -4 dBmV 37 dB 0 0
21 Locked 256QAM 603000000 Hz -5 dBmV 37 dB 0 0
22 Locked 256QAM 609000000 Hz -4 dBmV 38 dB 1 0
23 Locked 256QAM 615000000 Hz -4 dBmV 37 dB 0 0
24 Locked 256QAM 621000000 Hz -5 dBmV 37 dB 9 0
25 Locked 256QAM 627000000 Hz -4 dBmV 37 dB 0 0
26 Locked 256QAM 633000000 Hz -4 dBmV 37 dB 14 0
27 Locked 256QAM 639000000 Hz -4 dBmV 37 dB 0 0
28 Locked 256QAM 645000000 Hz -4 dBmV 37 dB 2 0
29 Locked 256QAM 651000000 Hz -5 dBmV 37 dB 7 0
30 Locked 256QAM 657000000 Hz -5 dBmV 37 dB 0 0
31 Locked 256QAM 663000000 Hz -5 dBmV 37 dB 0 0
32 Locked 256QAM 669000000 Hz -5 dBmV 37 dB 0 0
33 Locked OFDM PLC 722000000 Hz -7 dBmV 37 dB 1124331939 0



Upstream Bonded Channels
Channel ID Lock Status US Channel Type Frequency Width Power
4 Locked SC-QAM 16400000 Hz 6400000 46.0 dBmV
5 Locked SC-QAM 39600000 Hz 1600000 46.0 dBmV
3 Locked SC-QAM 22800000 Hz 6400000 47.0 dBmV
2 Locked SC-QAM 29200000 Hz 6400000 47.0 dBmV
1 Locked SC-QAM 35600000 Hz 6400000 47.0 dBmV



Current System Time:Sat Oct 19 13:28:13 2024

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1 month ago

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XfinityJoe

Official Employee

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548 Messages

Thanks for reaching out on the Forums @user_bntk76 we would be happy to look into your speed concern. Please send us a DM with your full name and address to Xfinity Support. 
To send a direct message:
Click "Sign In" if necessary
Click the "Direct Message" icon or  https://forums.xfinity.com/direct-messaging
Click the "New message" (pencil and paper) icon
The "To:" line prompts you to "Type the name of a person". Instead, type "Xfinity Support" there.
As you are typing a drop-down list appears. Select "Xfinity Support" from that list.
An "Xfinity Support" graphic replaces the "To:" line.
Type your message in the text area near the bottom of the window
Press Enter to send it

 

 

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Official Employees are from multiple teams within Xfinity: CARE, Product, Leadership.
We ask that you post publicly so people with similar questions may benefit from the conversation.
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1 month ago

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EG

Expert

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107.1K Messages

1 month ago

@user_bntk76 My apologies. Seems that I lost track of this.

@XfinityJoe 

Please circle back here and post any possible solutions for the issue here in these open public forums so that all readers here may benefit from the exchange / info. This is in keeping with the spirit for which these public help forums were originally intended. Thank you.

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