I was wondering someone could look at my logs and see if anything obvious. I am getting around 620 Mbps to max of 700 Mbps. Upload speeds are at 40 Mbps so those are okay. I just upgraded and in the 30 day plan window so want to see if can improve before that is up since otherwise will downgrade back to 400 Mbps service.
I did review the troubleshooting guide and tried as many things to simplify including:
Thanks for any guidance/help on resolving.
I am getting these errors in the event log:
|2-20-2019, 17:29:10||Warning(5)||"Dynamic Range Window violation"|
|2-20-2019, 17:28:33||Critical(3)||"Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=3c:04:61:fe:a0:65;CMTS-MAC=58:97:bd:98:69:d1;CM-QOS=1.1;CM-VER=3.1;"|
Here is my status info:
|Acquire Downstream Channel||657000000 Hz||Locked|
|DOCSIS Network Access Enabled||Allowed|
|Upstream Bonded Channels|
|Channel||Channel ID||Lock Status||US Channel Type||Frequency||Width||Power|
|1||4||Locked||SC-QAM||16500000 Hz||6400000 Hz||39.5 dBmV|
|2||1||Locked||SC-QAM||36100000 Hz||6400000 Hz||41.5 dBmV|
|3||2||Locked||SC-QAM||29600000 Hz||6400000 Hz||41.0 dBmV|
|4||3||Locked||SC-QAM||23000000 Hz||6400000 Hz||40.0 dBmV|
|Downstream Bonded Channels|
|Channel ID||Lock Status||Modulation||Frequency||Power||SNR/MER||Corrected||Uncorrectables|
|29||Locked||QAM256||657000000 Hz||-5.4 dBmV||38.0 dB||0||0|
|1||Locked||QAM256||489000000 Hz||-3.1 dBmV||39.3 dB||0||0|
|2||Locked||QAM256||495000000 Hz||-3.3 dBmV||39.1 dB||0||0|
|3||Locked||QAM256||501000000 Hz||-3.6 dBmV||39.1 dB||0||0|
|4||Locked||QAM256||507000000 Hz||-3.4 dBmV||39.1 dB||0||0|
|5||Locked||QAM256||513000000 Hz||-3.1 dBmV||39.2 dB||0||0|
|6||Locked||QAM256||519000000 Hz||-3.1 dBmV||39.2 dB||0||0|
|7||Locked||QAM256||525000000 Hz||-3.3 dBmV||38.9 dB||0||0|
|8||Locked||QAM256||531000000 Hz||-3.2 dBmV||38.9 dB||0||0|
|9||Locked||QAM256||537000000 Hz||-3.3 dBmV||38.8 dB||0||0|
|10||Locked||QAM256||543000000 Hz||-3.5 dBmV||38.5 dB||0||0|
|11||Locked||QAM256||549000000 Hz||-3.5 dBmV||38.5 dB||0||0|
|12||Locked||QAM256||555000000 Hz||-3.3 dBmV||38.7 dB||0||0|
|13||Locked||QAM256||561000000 Hz||-3.0 dBmV||38.6 dB||0||0|
|14||Locked||QAM256||567000000 Hz||-2.8 dBmV||38.8 dB||0||0|
|15||Locked||QAM256||573000000 Hz||-2.4 dBmV||38.8 dB||0||0|
|16||Locked||QAM256||579000000 Hz||-2.0 dBmV||39.0 dB||0||0|
|17||Locked||QAM256||585000000 Hz||-2.0 dBmV||39.0 dB||0||0|
|18||Locked||QAM256||591000000 Hz||-2.1 dBmV||39.1 dB||0||0|
|19||Locked||QAM256||597000000 Hz||-2.1 dBmV||39.1 dB||0||0|
|20||Locked||QAM256||603000000 Hz||-2.5 dBmV||39.1 dB||0||0|
|21||Locked||QAM256||609000000 Hz||-2.8 dBmV||38.9 dB||0||0|
|22||Locked||QAM256||615000000 Hz||-3.1 dBmV||38.7 dB||0||0|
|23||Locked||QAM256||621000000 Hz||-3.1 dBmV||38.7 dB||0||0|
|24||Locked||QAM256||627000000 Hz||-3.5 dBmV||38.6 dB||0||0|
|25||Locked||QAM256||633000000 Hz||-3.6 dBmV||38.7 dB||0||0|
|26||Locked||QAM256||639000000 Hz||-4.1 dBmV||38.6 dB||0||0|
|27||Locked||QAM256||645000000 Hz||-4.6 dBmV||38.3 dB||0||0|
|28||Locked||QAM256||651000000 Hz||-5.1 dBmV||38.0 dB||0||0|
|30||Locked||QAM256||663000000 Hz||-5.7 dBmV||37.9 dB||0||0|
|31||Locked||QAM256||669000000 Hz||-5.6 dBmV||37.8 dB||0||0|
|159||Locked||Other||690000000 Hz||-0.8 dBmV||36.2 dB||0||0|
Solved! Go to Solution.
Thank you for visiting the forums!
I've asked an employee to assist you. You should expect a reply in this thread.
Hi, sundogak. Welcome to the community, thanks for reaching out. I will be happy to help you out with your questions/concerns relating to your internet service and speed. I do want to make sure that you also reference this link: https://www.xfinity.com/support/articles/requirements-to-run-xfinity-internet-service to ensure your system meets the necessary requirements. There are a lot of potential contributing factors. When you hardwired directly to the modem after bypassing the router, what were your speeds? Your modem logs and signal levels look OK, there doesn't seem to be a signal issue present or anything like that. T3 timeouts are pretty common, as long as they're not occurring frequently. Let me know once you check that link and please provide your speed results after the hardwired connection, direct to modem. Thank you.!
Hi, thanks for confirming the event logs looked good. I met the minimum standards and this computer is actually on a 10 gigabit setup internal to house network. I had also done a direct connect with my laptop and was getting the 620 megabit value I noted earlier (which was also what I was getting from PC via my switch).
But with the info that the incoming signal you checked looked good, I took some time to double check things this evening. As usual, it boils down to something simple.....a cable. Apparently one of my newer Cat 7 10gigabit patch cables that I used to direct connect to the cable modem is faulty (looks like connector was loose). When I replaced it with one of my older Cat 6 patch cables my test speeds went back up to the max (~940 MBit). So much for the expensive cables.
Anyway, all is good and I am getting the upper limit consistently at this point so problem solved and issue can be closed.
Thanks for the assist.
You are most welcome! I really appreciate the update, thank you very much for elaborating on it too. I will go ahead and complete this request/interaction, I'm glad to hear that everything is back on track with your internet service and speed. Thank you for your time and for being a customer of ours. Take care!