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SB8200 randomly loses internet (RCN)

  • 9 November 2023
  • 2 replies
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I have RCN internet and a few times a day my internet is dropping out for about a minute or two.  When it’s working everything is fine (no speed issues or anything).  It’s the random drops that are the problem.

At a glance it looks like my upstream power levels are low and I’m getting some errors in the system log that I don’t fully understand (Commanded Power in Excess of 6 dB Below….).

 

RCN’s merlin page also shows micro reflections as red and yellow with values of -17.101 DB (red), -19.522 DB (yellow), -17.845 DB (red).

 

 

 

 

 

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Best answer by SURFboard Moderator 20 November 2023, 20:33

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Userlevel 6
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Your downstream power levels are high. You should be between -7.5 adn 7.5dbmv. 

You could try adding a signal attenuator

Userlevel 5
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Upstream Power levels are very low follow the link below to check on the cable signal levels :

ttp://arris.force.com/consumers/articles/General_FAQs/SB8200-Cable-Signal-Level

Try a Reset on the cable modem and then check the cable signals by following the above link:

http://arris.force.com/consumers/articles/General_FAQs/SB8200-Factory-Reset

Also, Event Logs are monitored by the Internet Service Provider (ISP).

 

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