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Question

Slow speed internet connection on sb8200


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Hey, the modem keeps blinking orange and settings say 100mbps. If I reset it, it will blink green and say 1000mbps for a little while, but then eventually drop again. The cat 6 ethernet is fine. Xfinity says everything is good on their end. The modem is four years old, do you think it's starting to go?

9 replies

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Could you let us know the product’s model number to assist you further?


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  • Author
  • The Many
  • 5 replies
  • April 1, 2025

Sb8200


plemans
Juggernaut
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  • Juggernaut
  • 2252 replies
  • April 1, 2025

the led light is? 

did you try swapping the cable? 

What router is it connected to? 

Did you try hardwiring a pc into that port to confirm it isn’t an issue with the router? 


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  • Author
  • The Many
  • 5 replies
  • April 1, 2025

Yeah, the light where the ethernet cable is. I actually just got a new cable, cause my cat chewed it up and put a cable protector on this one. Still having an issue. I also disconnected the router. The ethernet cable is 32 feet from the modem, to the pc.


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Could you confirm the LED light status on the front panel of the modem?

Since you're experiencing slow internet speeds, could you share the speed plan you have with your ISP?

If the slow speed persists even with a direct Ethernet connection, I recommend checking the cable signal levels to ensure they are within the acceptable range.

http://arris.force.com/consumers/articles/General_FAQs/SB8200-Cable-Signal-Levels


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  • Author
  • The Many
  • 5 replies
  • April 2, 2025

The led light in front has always been blue. I contacted my isp a couple times and they said everything is fine on their end. OK, I'll try out the cable signal. Wifi has been faster. Ethernet would test at 93mbps and wifi would test at 320mbps. This was when I had the 300mbps plan. When downloading games on steam, it would drop to 0mbps sometimes on both wifi and ethernet. I think that's normal for steam, so the pc can catch up on installing.


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I recommend checking the cable signal levels. If the signals are not within the acceptable range, please contact your internet service provider to reprovision or reactivate the modem.


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  • Author
  • The Many
  • 5 replies
  • April 2, 2025

Says the page is unavailable. I think it’s undergoing maintenance.


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  • Author
  • The Many
  • 5 replies
  • April 4, 2025

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 709750000 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
44 Locked QAM256 709750000 Hz 5.6 dBmV 44.1 dB 0 0
13 Locked QAM256 523750000 Hz 6.1 dBmV 45.3 dB 53 3
14 Locked QAM256 529750000 Hz 5.4 dBmV 44.8 dB 47 29
15 Locked QAM256 535750000 Hz 5.4 dBmV 44.6 dB 26 0
16 Locked QAM256 541750000 Hz 5.6 dBmV 45.0 dB 18 0
17 Locked QAM256 547750000 Hz 5.6 dBmV 44.8 dB 0 0
18 Locked QAM256 553750000 Hz 5.5 dBmV 44.9 dB 0 0
19 Locked QAM256 559750000 Hz 5.5 dBmV 44.7 dB 0 0
20 Locked QAM256 565750000 Hz 5.2 dBmV 44.6 dB 0 0
21 Locked QAM256 571750000 Hz 5.0 dBmV 44.5 dB 0 0
22 Locked QAM256 577750000 Hz 5.0 dBmV 44.5 dB 0 0
23 Locked QAM256 583750000 Hz 5.4 dBmV 44.5 dB 0 0
24 Locked QAM256 589750000 Hz 5.5 dBmV 44.5 dB 0 0
25 Locked QAM256 595750000 Hz 5.5 dBmV 44.5 dB 0 0
26 Locked QAM256 601750000 Hz 5.2 dBmV 44.3 dB 0 0
27 Locked QAM256 607750000 Hz 5.4 dBmV 44.3 dB 0 0
28 Locked QAM256 613750000 Hz 5.2 dBmV 44.4 dB 0 0
29 Locked QAM256 619750000 Hz 5.3 dBmV 44.3 dB 0 0
30 Locked QAM256 625750000 Hz 5.1 dBmV 44.1 dB 0 0
31 Locked QAM256 631750000 Hz 5.1 dBmV 44.1 dB 0 0
32 Locked QAM256 637750000 Hz 5.0 dBmV 44.1 dB 0 0
33 Locked QAM256 643750000 Hz 5.1 dBmV 44.1 dB 0 0
34 Locked QAM256 649750000 Hz 5.6 dBmV 44.4 dB 0 0
35 Locked QAM256 655750000 Hz 5.9 dBmV 44.5 dB 0 0
36 Locked QAM256 661750000 Hz 5.9 dBmV 44.4 dB 882 2850
37 Locked QAM256 667750000 Hz 5.9 dBmV 44.4 dB 211 846
38 Locked QAM256 673750000 Hz 6.0 dBmV 42.9 dB 150 1
39 Locked QAM256 679750000 Hz 6.2 dBmV 44.5 dB 521 2214
40 Locked QAM256 685750000 Hz 6.4 dBmV 44.6 dB 0 0
41 Locked QAM256 691750000 Hz 6.3 dBmV 44.5 dB 0 0
42 Locked QAM256 697750000 Hz 5.9 dBmV 44.3 dB 0 0
43 Locked QAM256 703750000 Hz 5.6 dBmV 44.3 dB 0 0
193 Locked Other 957000000 Hz 1.6 dBmV 39.0 dB 102573147 335779

 

 

Upstream Bonded Channels
Channel Channel ID Lock Status US Channel Type Frequency Width Power
1 17 Locked SC-QAM Upstream 16400000 Hz 6400000 Hz 36.0 dBmV
2 18 Locked SC-QAM Upstream 22800000 Hz 6400000 Hz 36.0 dBmV
3 19 Locked SC-QAM Upstream 29200000 Hz 6400000 Hz 36.0 dBmV
4 20 Locked SC-QAM Upstream 35600000 Hz 6400000 Hz 36.0 dBmV

 


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