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Performance issues with CM500 and Time Warner
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Performance issues with CM500 and Time Warner
My internet continues to drop and/or my speeds come down to a crawl below 1MB. I have made multiple calls for service, with technicians dispatched to home to find nothing with the signal and pointing the problem to my purchased modem. The last tech that arrived did state seeing errors at the street Tap and that he would place a work order. I called again yesterday to hear that the work order was complete (no details could be provided). I am still experiencing issues and would appreciate assistance in narrowing the issue down to either with the ISP or the modem.
Cable Connection Details
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This field below allows you to modify the frequency the cable modem start with its scan during initialization and registration. Enter the new start frequency and restart the cable modem for it to take effect. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Current System Time:Fri Jul 29 18:14:12 2016 |
Event Log:
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Thanks, Phil...
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Re: Performance issues with CM500 and Time Warner
Same Issue:
Firmware Version V1.01.04 |
And just yesterday I'm starting to have odd slowdowns and DNS resolution issues!
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Re: Performance issues with CM500 and Time Warner
Hello pquihuis
You log shows T3 timeouts which means you are getting noise on the lines I would call the ISP and have them send a tech out to check the lines see if they can resolve the issue. Below I left a description of a T3 timeout.
"The cable modem has sent 16 Ranging Request (RNG-REQ) messages without receiving a Ranging Response (RNG-RSP) message in reply from the CMTS. The cable modem is therefore resetting its cable interface and restarting the registration process. This typically is caused by noise on the upstream that causes the loss of MAC-layer messages. Noise could also raise the signal-to-noise ratio (SNR) on the upstream to a point where the cable modem’s power level is insufficient to transmit any messages. If the cable modem cannot raise its upstream transmit power level to a level that allows successful communication within the maximum timeout period, it resets its cable interface and restarts the registration process. This error message is DOCSIS event message is R03.0, Ranging Request."
DarrenM
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Re: Performance issues with CM500 and Time Warner
Thanks Darren,
I will reach out to my ISP. I also see that Channel 2 on the Upstream is showing "Not Locked and Power shows 0.0dBmV", is this also an issue?
Upstream Bonded Channels (Partial Service) | |||||||||||||||||||||
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Regards, Phil...
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Re: Performance issues with CM500 and Time Warner
Also, should the Uncorrectables be zero, as last week they were in the 5 digit number range?
Phil...
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Re: Performance issues with CM500 and Time Warner
Hello pquihuis
You will have to ask the ISP about that and the uncorrectables being a low number is fine.
DarrenM
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Re: Performance issues with CM500 and Time Warner
I have followed up with Time Warner and their L3, but they are continuing to point the issue to my Netgear CM500 modem. Even after sharing my event log highlighting the errors, they continue to claim that all signal levels are within specification. To get past the finger pointing, I will rent their modem to assess if my problems continue. I'll keep you posted.
Regards, Phil...
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Re: Performance issues with CM500 and Time Warner
Hmm. I'm having a similar problem.
I purchased and installed a CM500 last week. The performance was fantastic at all the wired and wireless access points in my home.
However, this weekend. Everything fell apart. I noticed the firmware version of the CM500 -- it's now V1.1.2.12
On the Netgear website, the recommended firmware version for the CM500 on TWC is V1.01.04
Is there any way to downgrade the CM500 myself? Suggestions appreicated on how to resolve this firmware mismatch.
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Re: Performance issues with CM500 and Time Warner
I have since then swapped out my CM500 with Time Warner's Arris Cable modem to see if my issues remain. It has now been 1 month and my daily speed issues have gone away. I will send my Netgear CM500 Cable Modem back for repair and try again once it returns.
Phil....
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Re: Performance issues with CM500 and Time Warner
I'm embarrassed by my earlier post. I was looking at the long Netgear device. My CM500 does have the correct firmware version to work with TWC.
But my access points and routers aren't able to get IP addresses and DNS from the network. Do any of these logs tell me what the problem might be?
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Re: Performance issues with CM500 and Time Warner
Hello cyl
You do have alot of T3 timeouts which is a issue with the cable signal I would suggest having a your ISP send out a tech to check your lines and signal strength.
DarrenM
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