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4 TopicsCM1000 Xfinity issues
I am quite frustrated at this point. I had a CM600 modem to support Comcast's Extreme 150 service. I've had it for a few years and was consistently getting 160 to 170mbps speed from it. About three weeks ago, I noticed a drop off and did a speed test and could not get more than 50mbps. Comcast reset the modem (I did the same thing). No change. They sent a tech out to the house and he swapped out my modem for one of theirs and lo and behold, 170mbps. He said I needed a new modem. I was a little suspicious of this, but wanting to eventually get gigabit service when it becomes available, I bought a CM1000. It provisioned fine, but I am seeing the same behavior. At the start of the speed test it spikes to over 100 but eventually averages out to 70 or 80. They came out again and re-trenched a new thicker line between the street and the house. Still the same behavior. The tech came out again today and installed a dedicated line directly from the outside box to the modem. Still the same behavior. The logs from the Modem are consistently showing: Time Priority Description 2017-12-03, 10:41:31 Notice (6) CM-STATUS message sent. Event Type Code: 4; Chan ID: 21 22 ; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=b0:39:56:4b:b8:68;CMTS-MAC=00:01:5c:a7:12:4e;CM-QOS=1.1;CM-VER=3.1; 2017-12-03, 10:41:17 Warning (5) MDD message timeout;CM-MAC=b0:39:56:4b:b8:68;CMTS-MAC=00:01:5c:a7:12:4e;CM-QOS=1.1;CM-VER=3.1; The Cable Connection page displays the following. Any thoughts on this issue? Frequency start Value 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. Starting Frequency <tabindex=-1>Startup Procedure Procedure Status Comment Acquire Downstream Channel 555000000 Hz Locked Connectivity State OK Operational Boot State OK Operational Security Enable BPI+ IP Provisioning Mode Honor MDD IPv6 only <tabindex=-1>Downstream Bonded Channels Channel Lock Status Modulation Channel ID Frequency Power SNR / MER Unerrored Codewords Correctable Codewords Uncorrectable Codewords 1 Locked QAM256 20 555000000 Hz 2.8 dBmV 36.8 dB 158493311 546 0 2 Locked QAM256 1 423000000 Hz 5.4 dBmV 38.7 dB 157105990 36 0 3 Locked QAM256 2 429000000 Hz 5.6 dBmV 38.9 dB 157114932 13 0 4 Locked QAM256 3 435000000 Hz 5.6 dBmV 39.0 dB 157125743 17 0 5 Locked QAM256 4 441000000 Hz 5.1 dBmV 38.7 dB 157134245 29 0 6 Locked QAM256 5 453000000 Hz 4.2 dBmV 38.5 dB 157143868 60 0 7 Locked QAM256 6 459000000 Hz 3.8 dBmV 38.3 dB 157153008 71 0 8 Locked QAM256 7 465000000 Hz 3.5 dBmV 38.3 dB 157162210 62 0 9 Locked QAM256 8 471000000 Hz 3.2 dBmV 38.2 dB 157171891 72 0 10 Locked QAM256 9 477000000 Hz 2.7 dBmV 38.0 dB 157181040 59 0 11 Locked QAM256 10 483000000 Hz 2.2 dBmV 37.5 dB 157190267 74 0 12 Locked QAM256 11 489000000 Hz 2.0 dBmV 37.4 dB 157199468 75 0 13 Locked QAM256 12 495000000 Hz 1.9 dBmV 37.4 dB 157208618 80 0 14 Locked QAM256 13 507000000 Hz 1.7 dBmV 37.3 dB 157218872 61 0 15 Locked QAM256 14 513000000 Hz 1.6 dBmV 37.3 dB 157227558 70 0 16 Locked QAM256 15 519000000 Hz 1.4 dBmV 37.3 dB 157237136 95 0 17 Locked QAM256 16 525000000 Hz 1.1 dBmV 37.1 dB 157246947 121 0 18 Locked QAM256 17 531000000 Hz 1.3 dBmV 37.4 dB 157255633 105 0 19 Locked QAM256 18 537000000 Hz 1.3 dBmV 37.1 dB 157264694 132 0 20 Locked QAM256 19 543000000 Hz 1.6 dBmV 37.1 dB 157275272 112 0 21 Locked QAM256 21 561000000 Hz 2.9 dBmV 32.3 dB 147085863 2537135 7646772 22 Locked QAM256 22 567000000 Hz 3.6 dBmV 27.2 dB 135579752 4471561 17201032 23 Locked QAM256 23 573000000 Hz 3.7 dBmV 35.5 dB 152906954 3458380 927827 24 Locked QAM256 24 579000000 Hz 3.1 dBmV 34.7 dB 157299415 177 0 25 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0 26 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0 27 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0 28 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0 29 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0 30 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0 31 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0 32 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0 <tabindex=-1>Upstream Bonded Channels Channel Lock Status Modulation Channel ID Frequency Power 1 Locked ATDMA 1 35600000 Hz 35.8 dBmV 2 Locked ATDMA 2 29200000 Hz 35.8 dBmV 3 Locked ATDMA 3 22800000 Hz 34.0 dBmV 4 Not Locked Unknown 0 0 Hz 0.0 dBmV 5 Not Locked Unknown 0 0 Hz 0.0 dBmV 6 Not Locked Unknown 0 0 Hz 0.0 dBmV 7 Not Locked Unknown 0 0 Hz 0.0 dBmV 8 Not Locked Unknown 0 0 Hz 0.0 dBmV <tabindex=-1>Downstream OFDM Channels Channel Lock Status Modulation / Profile ID Channel ID Frequency Power SNR / MER Active Subcarrier Number Range Unerrored Codewords Correctable Codewords Uncorrectable Codewords 1 Locked 0, 1 25 372000000 Hz 7.6 dBmV 38.3 dB 1108 ~ 2987 4381967 35743 0 2 Not Locked 0 0 0 Hz 7.2 dBmV 0.0 dB 0 ~ 4095 0 0 0 <tabindex=-1>Upstream OFDMA Channels Channel Lock Status Modulation / Profile ID Channel ID Frequency Power 1 Not Locked Unknown 0 0 Hz 0 dBmV 2 Not Locked Unknown 0 0 Hz 0 dBmV Any help or guidance I can give Xfinity would be greatly appreciated. I really want to own my own equipment and not pay $10 a month for their stuff. Warm regards, JoeSolved78KViews0likes78Commentsc6300 does not get DHCP configuration in router mode
I purchased a c6300 router and registered it with xfinity. The problem is that in the router mode it never gets IP configuration from DHCP. If to switch it to the bridge mode, the connected computer receives configuration properly, so DHCP on the provider side works. I tried to reset it, restore factory settings, release/renew with no result. Using it in bridge mode as a just cable modem does not make sense for me as I am willing to upgrade to the high-speed wifi. Otherwise my previous setup of SB6121 + TP-Link N300 works fine1.5KViews0likes2CommentsNot getting correct speed with Comcast
Hello all In November I saw that Comcast offered a higher tier internet service in my neighborhood. Speeds are advertised up to 986 Mbps. Since I signed up I’ve only seen 350-400 Mbps. I had a couple of online chats and phone calls with Comcast. I also had two techs come to the house to check the signal to the house. The second tech said that Comcast had to approve new firmware for my CM1000 modem (this was in December). He said that once Comcast approved the firmware then Netgear would push the upgrade to my modem directly. I called to try to get credit for billing since I wasn’t getting the correct speeds and I was forced to chat with Comcast tech support again. The tech sent me a link to the Nighthawk X6 router firmware page to update my CM1000 cable modem :| When I told them it was the wrong equipment they told me to contact Netgear directly to receive my firmware update. I sent this link to him. https://www.netgear.com/support/product/CM1000#download It says “Current Versions Firmware upgrades are pushed down by your ISP. For more information, please see our Knowledge Base .” He just told me to talk to Netgear :| Has anyone had any success getting advertised speeds with Comcast Gigabit Internet? Thanks for your time13KViews0likes6CommentsComcast Activation of Gig Service on CM1000
I have just had comcast install the cable and attach it to the modem. The connection seems good. I can see the modem through the browser, but can’t connect to the internet to activate the service. I have rebooted the modem a number of times and done a factory reset...still nothing. It has the latest .15 firmware.1.2KViews0likes2Comments