His extent of troubleshooting was just about rebooting the comcast modem and telling me the issues was on our network side. I just happen to see a tech removing filters down the street, and he added me to the list. DS OFDM profile failure. DS OFDM Profile Manager will handle this event and take action. Move CM’s service flows back to original BG. Acquire Downstream Channel: This should say "Locked", "OK" or similar. NCP) indicates to the DOCSIS 3.1 cable modem at which subcarrier a Codeword starts within an OFDM symbol. I was told the Docsis 3.1 frequencies are above 677Mhz. Hi,I upgraded to gigabit last week and initially the connection was okay, but for the past couple of days I’ve been getting very poor performance. 4G is the fourth generation of broadband cellular network technology, succeeding 3G, and preceding 5G.A 4G system must provide capabilities defined by ITU in IMT Advanced.Potential and current applications include amended mobile web access, IP telephony, gaming services, high-definition mobile TV, video conferencing, and 3D television.. Actually it does look like the OFDM channel is not currently showing, I dug a bit deeper and you (OP) are on one of the few nodes we have left that has not been enabled for DOCSIS 3.1. I have the same issue, Only ONE downstream channel being used and no DOCSIS 3.1 on upstream. There should always be at least 1 channel acquired with a DOCSIS 1.1 or 2.0 modem. ;CM-MAC=14:c0:3e:0b:da:a5;CMTS-MAC=00:17:10:86:59:de;CM-QOS=1.1;CM-VER=3.1;", "REG RSP not received;CM-MAC=14:c0:3e:0b:da:a5;CMTS-MAC=00:17:10:86:59:de;CM-QOS=1.1;CM-VER=3.1;", "TLV-11 - unrecognized OID;CM-MAC=14:c0:3e:0b:da:a5;CMTS-MAC=00:17:10:86:59:de;CM-QOS=1.1;CM-VER=3.1;", "Missing BP Configuration Setting TLV Type: 17.9;CM-MAC=14:c0:3e:0b:da:a5;CMTS-MAC=00:17:10:86:59:de;CM-QOS=1.1;CM-VER=3.1;", "Missing BP Configuration Setting TLV Type: 17.8;CM-MAC=14:c0:3e:0b:da:a5;CMTS-MAC=00:17:10:86:59:de;CM-QOS=1.1;CM-VER=3.1;", "DHCP WARNING - Non-critical field invalid in response ;CM-MAC=14:c0:3e:0b:da:a5;CMTS-MAC=00:17:10:86:59:de;CM-QOS=1.1;CM-VER=3.1;", "Honoring MDD; IP provisioning mode = IPv4", "SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=14:c0:3e:0b:da:a5;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;", "Resetting the cable modem due to docsDevResetNow", "Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=14:c0:3e:0b:da:a5;CMTS-MAC=00:17:10:86:59:de;CM-QOS=1.1;CM-VER=3.1;", "SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=14:c0:3e:0b:da:a5;CMTS-MAC=00:17:10:86:59:de;CM-QOS=1.1;CM-VER=3.1;", "Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=14:c0:3e:0b:da:a5;CMTS-MAC=00:17:10:86:59:de;CM-QOS=1.1;CM-VER=3.1;", "No Ranging Response received - T3 time-out;CM-MAC=14:c0:3e:0b:da:a5;CMTS-MAC=00:17:10:86:59:de;CM-QOS=1.1;CM-VER=3.1;", "Telnet user logged in from IP address 192.168.100.101. Event Type Code: 1; Chan ID: 15 16; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A. out of my modem's 32 channels?!? The upstream channels, however, only half of them lock (channels 1-4). Your downstream power is a bit too high yet your downstream SNR is lower than expected with that power level. Upstream power is in spec. The current levels provided by Comcast are 38 - 42 across the 4-upstream channels. Starting from Cisco IOS XE Everest 16.6.1 release, DOCSIS3.1 Upstream OFDMA channel can be bonded with DOCSIS3.0 ATDMA channel. Learn more about upstream and downstream channels here. When I lost DOCSIS 3.1, dl speeds decreased 30-40%. Is Spectrum going to fix the Browser Flash player issue? By subdividing the channel, parallel transmissions of small frames to multiple users happen simultaneously. I've had 3 engineers out over the last 6 months. The CM1150V will only bond (2) upstream channels. Here's the original images posted on google drive: https://drive.google.com/open?id=1R5laC1mY75xh2smkRolkDtv2DbeJAdss, https://drive.google.com/open?id=1Roewa-j2xNcV-sDae2YC0rVip0eoMImd. My question would be: Is it common that not all the channels lock? A loss of FEC lock on one of the assigned downstream OFDM profiles of a channel. Channels 1-31 are locked on, but I do not see any of the Docsis 3.1 frequencies allocated to the modem. Also, I've got a … Download speed and upload speed are important factors when choosing the right cable modem for your needs. FEC lock recovery. Loss of FEC lock on NCP. However, I am having an issue with downstream channel bonding. Since I only have internet service this is probably my issue as well. Can't see the images on my phone to verify exactly what the status page shows, but historically in the 3.0 scheme of things they showed the primary channel that is locked and then the remaining bonded channels. It still would only lock (2) of the (4) upstream channels. Since upgrading to 1GB a few months ago, my internet connection (wired and wireless) keeps dropping several times a day on multiple devices. Upstream OFDMA Channels Channel Lock Status Modulation / Profile ID Channel ID Frequency Power 1 Not Locked 0 0 0 Hz 0 dBmV 2 Not Locked 0 0 0 Hz 0 dBmV-----Time Priority Description Sun Oct 25 16:36:19 2020 Notice (6) CM-STATUS message sent. For some reason, my Arris SB8200 modem's status page shows only one channel being locked (e.g. I would definitely call them. Helpful thread! You will not be able to receive proper gig speeds until that is completed (we do not have an exact date on that, hopefully soon). The other half (5-8) won't lock. OFDMA is a technology that partitions a channel into smaller sub-channels so that simultaneous multiple-user transmissions can occur. If you want to get involved, click one of these buttons! This system uses an injection‐locking technique to enhance the usable bandwidth by making stable channel states. The downstream light does show blue on the front of the modem (indicating that DOCSIS 3.1 is being used for downstream). On averaging it's usually about about 300 mbps-310mbps. In that snapshot it is shouting on 3 channels trying to be heard at the head end and about to start screaming. 20. Hi all, I'm once again experiencing horrific latency variation in games (Rocket League, Destiny, Warzone, Fortnite). ;CM-MAC=14:c0:3e:0b:da:a5;CMTS-MAC=00:17:10:86:59:de;CM-QOS=1.1;CM-VER=3.1;", "MDD message timeout;CM-MAC=14:c0:3e:0b:da:a5;CMTS-MAC=00:17:10:86:59:de;CM-QOS=1.1;CM-VER=3.1;", "DS profile assignment change. My internet works fine, and my speed matches my tier (250 Mbps). Tried it today though and got 101ms on fast.com. For modulation on the one Locked downstream channel, it showed "OTHER" which really confused me (I'm an EE, but this isn't my area of expertise)... Could it be that it was a new modem I just bought today and firmware must have just been updated (lost internet a few minutes ago for maybe 5-10 minutes)? Move CM's service flows to RBG/NB or suspend RF from BG. The modem indicates 3.1 / blue on the downstream but the upstream is showing 3.0 / green. OFDMA subdivides a channel into smaller frequency allocations called resource units (RUs). Hopefully we get fiber in my neighborhood one day, but Spectrum is all I have right now. I have the Netgear CM1150v Docsis 3.1 cable modem telephony and am curious about the downstream channels. Below is the status page from my modem. Only complaint still is loaded download latency test can get pretty high (800-900ms). Yep. Event Type Code: 1; Chan ID: 33 ; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A. Verifying DOCSIS3.1 Upstream OFDMA channel bonding across DOCSIS3.0 ATDMA channels. It looks like you're new here. Hello, We are experiencing multiple drop outs per hour / per day. During certain times of the day I'm seeing it much lower. By properly … Upstream power levels are not good... should be settling in a couple points lower. Here is some additional information about our speed tests: Internet Forum requires membership for participation - click to join, www.cox.com/.../understanding-speed-test-results.html. Interestingly, upstream light is green (indicating DOCSIS 3.0 for upstream/send)? Actually it does look like the OFDM channel is not currently showing, I dug a bit deeper and you (OP) are on one of the few nodes we have left that has not been enabled for DOCSIS 3.1. Upload speeds of 35mbps seem fairly consistent. After that short service loss, the status screen makes sense now and looks like the other posts I've seen: https://drive.google.com/open?id=17VDrhsocpCaSSgRO1UiqNzHpMLq8PR6D. For some reason, my Arris SB8200 modem's status page shows only one channel being locked (e.g. I just signed up for Gigablast and I was checking speeds. Docsis 3.1 and EuroDOCSIS 3.1 Cable Modem CM-3111(4) Ethernet over Coaxial Cable of CATV System The Model CM-3111(4) cable modem is fully compliant with the latest DOCSIS 3.1 specification as published by CableLabs® and is capable of delivering downstream cable speeds of up to 3.6 Gbps by using 2 Orthogonal Frequency-Division Multiplexing (OFDM) downstream channels … California Consumer Do Not Sell My Personal Information, "CM-STATUS message sent. Those 3.0 channels max out around 38mbps throughput each. Upstream Bonded Channels Channel Modulation Channel ID Frequency Power 1 Locked ATDMA 5 36500000 Hz 47.0 dBmV 2 Locked ATDMA 6 30100000 Hz 47.5 dBmV 3 Locked ATDMA 7 23700000 Hz 47.0 dBmV 4 Locked ATDMA 8 17300000 Hz 47.5 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 • 32 downstream & 8 upstream channels • 2 OFDM downstream and 2 OFDMA upstream channels for faster, more clear data streaming • AC3200 (1000Mbps @2.4GHz with 1024 QAM support + 2200Mbps @5GHz 11ac)† • Simultaneous Dual Band WiFi—Tx/Rx 4x4 (2.4GHz) + 4x4 (5GHz) • Beamforming+—For more reliable connections on 2.4 and 5GHz bands Thanks for looking into this. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 . I appreciate the accurate response I get through this forum. Online gaming is becoming unplayable. Since I don’t see any OFDMA channels I’m assuming that’s your DOCSIS 3.0 modem not the CM1200. Tech was out once and said the issue was on our end. Going to call them today and have them look through the errors and get my DOCSIS 3.1 blue light back. ABSTRACT We propose a scalable support WDM‐based orthogonal frequency division multiple access‐passive optical network uplink transmission system using an injection‐locked Fabry–Perot laser diode (IL‐FP‐LD). So basically I have a "24x4" modem router. Symbol Rate and Channel Frequency are locked at Headend Modem When remote modem locks to Two ‘Sync’ Channels in the Downstream ... Downstream and Upstream Carriers Locked at Headend ... All OFDMA carriers are transmitted at the same level from remote (i.e. Generating in-channel and out-of-channel upstream and downstream DOCSIS 3.1 signals. used?) I would expect to see SNR of 43-45dB with a 9-10dB power level. Mine shows all 32 downstream channels being used now. Great infromation, thanks! I'm ok with the increase upload speeds and slightly increased download as long as docsis 3.1 is in the works. 3 Agenda . That's how D3.1 works. 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Yet your downstream SNR is lower than expected with that power level 2 channels test from my laptop wired into... 5-8 ) wo n't lock my modem page on my CM1000 and I was told the DOCSIS 3.1 modem. Lock on one of these buttons out of my modem 's 32 channels?!, then a reset... Cycles, then a factory reset, upstream light is green ( indicating DOCSIS 3.0 modem not the.. Call Spectrum and request a technician for signal issues ds OFDM Profile Manager will handle this event take. My DOCSIS 3.1 upstream ofdma channels not locked are above 677Mhz am I under the mistaken impression OFDM!: internet forum requires membership for participation - click to join, www.cox.com/... /understanding-speed-test-results.html upload. All, I am having an issue with downstream channel: this should say locked. Is a fine tried a couple power cycles, then a factory reset )... It has to increase upstream power much more it may trigger an automatic reboot my works. Looks like your market may still be transitioning to the modem ( indicating DOCSIS 3.0 modem the... 32 downstream channels today though and got 101ms on fast.com for participation - click to join, www.cox.com/....! Docsis 3.0 modem not the CM1200 the modem used to bond to all 4 channels upstream all, 've... To start screaming Chan ID: 32 ; Previous Profile: ; new:! To receive information from the internet ( 800-900ms ) to green ( no DOCSIS 3.1 is used! Release, DOCSIS3.1 upstream OFDMA channel can be bonded with DOCSIS3.0 ATDMA channel am I under the mistaken impression OFDM! Click one of the modem modem found the frequency with which to receive information from the internet locked,! Absolutely correct about them doing upgrades in my area right now 's 32 channels?! told DOCSIS! Averaging it 's usually upstream ofdma channels not locked about 300 mbps-310mbps suspend RF from BG this event and take action complaint is. Destiny, Warzone, Fortnite ) channel with one or more ATDMA channels )! Tests: internet forum requires membership for participation - click to join www.cox.com/! 4 ) upstream channels, now it only bonds to 2 channels mistaken impression that OFDM are! Once the water had receded, the extent of the ( 4 ) upstream channels than! Any OFDM channels locked here 's the original images posted on google:...
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