I noticed that it only has four of the 8 upstream channels bonded. Upstream SNR levels are read at the CMTS on the upstream data channel, not the modem or the modem diagnostic screens. Acceptable SNR Levels (dB) : If QAM64 , SNR should be 23.5 dB or greater. The power level on all downstream appears to be good (1.5-3.3). I logged into my MB8600 and noticed that I only have two downstream channels bonded, all four upstream are still bonded. The self troubleshooting that you've provided is not applicable, I don't have any splitters in my apartment. The levels look OK and I'm only seeing uncorrected errors on about 6 or 7 (of 31) downstream channels (and the 1 ODFM channel shows uc errors also).-edit- Seems the router is the criminal here. News: For some time, DOCSIS 3.0 cable broadband tiers have been a little topheavy, with downstream speeds that far out-weigh their upstream counterparts. My modem is a fairly new Cisco DPC3008. About a month ago, I went out and bought a Motorola SB 6120 DOCSIS 3 Modem. All 32 downstream seem fine. Thank you! Splitters should be swapped with known to be good / new ones to testIf there aren't any unneeded splitters that can be eliminated and if your coax wiring setup can't be reconfigured so that there is a single two way splitter connected directly off of the drop from the street/pole with one port feeding the modem and the other port feeding the rest of the house/equipment with additional splits as needed, and you've checked all the wiring and fittings for integrity and tightness and refresh them by taking them apart then check for and clean off any corrosion / oxidation on the center wire and put them back together again, then perhaps it's best to book a tech visit to investigate and correct. Also, there are no splitters between my coax cable drop and the modem. Once the configuration is complete, all connected smart devices can start using higher data speeds of up to 1 Gbps. Channel bonding doesn't do anything to increase overall upstream capacity, but it does combine several channels to boost peak upstream speeds. Only 4 channels are bonded as seen below on SB8200, getting slower upload speeds during the day. Chances are the problem is a mismatch between the modem and the speed tier, and/or local signal problems. Good Downstream power levels are within -7 to +7 dBmV. I have contacted Xfinity's costumers service, and they escalted my case to a higher tier of tech support . to start at the home. The upstream channels, however, only half of them lock (channels 1-4). They should be calling me tomorrow Monday 6/15/2020. Downstream and upstream power levels are important when determining if the cable line that is connected to your cable modem or modem router is receiving sufficient power. It is a Comcast certified Xfinity cable modem and also compatible with other cable service providers. ... Upstream Bonded Channels. It is normal to have less upstream channels than downstream. Previous bonding methodologies resided at lower OSI layers, requiring coordination with telecommunications companies for implementation. Attempted Solution: Cox tech acknowledged my 51-55 dBmv . Also, is there a way to reduce the upstream channel … Not compatible with any other cable internet provider. In the Downstream Bonded Channels section, identify the Modulation and Power to find verify SNR levels are within the acceptable range for each downstream channel. We used to have much stronger signals. I have an account with Comcast and have recently been experiencing frequent slowdowns and disconnects. Only one upstream channel is locked. On occasion, it drops to 1 bonded. I don't know if 4 is normal until a certain speed or what. Nope.. Also my modem's uplink/upstream indicator is displayed as solid amber on my modem, it used to be solid green but had changed when I first started having issues, I've checked with manufacturer regarding this status and it goes solid amber when there is only 1 upstream bonded channel, which matches stats below.Also getting extreme packet loss. In the Upstream Bonded Channels section, identify the number of Channels and Type to find verify Upstream Power levels are within the acceptable range for each upstream channel. I have a 24x8 modem and 23/24 downstream channels are locked and 5/8 upstream channels are locked. I believe this is a line problem, and not a modem problem. I've power cycled the modem and router, remote reset the modem (via xFinity dashboard and phone call), factory reset the Google WiFi, and that's about the extent of my technical knowledge. I'm stuck right now because I'm not sure if the upstream bonded channels being unlocked is the real issue. The specifications for the CM600 clearly state that there are 24 Download channels and 8 Upload bonded channels. Also, is there a way to reduce the upstream channel … As the post implies the web page … Having internet issues - channel bonding. The SB6190 is best for internet speed plans up to 400 Mbps. So basically I have a "24x4" modem router. Forum discussion: Hi, On my SB6120 with FW 1.0.3.0, recently upgraded by comcast to 16 /2 with Two Bonded channels. Upstream Bonded Channels (Partial Service) New Post - Tech Support. Bear in mind that if the premises facing techs can not find or fix a problem at your home, it is they who are responsible for escalating it to their line / network / maintenance dept. The current spec available today, DOCSIS 3.0, supports downstream speeds from 170 Megabits per second (Mbps) up to 1 Gigabit per second (Gbps), depending on the number of channels used. This is a measure of how much power is in the upstream channels. Downstream channel light is Green and upstream channel … Re: Netgear CM500 - Upstream not channel bonding The Modem is rated for speeds upwards to 680Mbps per Netgears site. I believe this is a line problem, and not a modem problem. CM1150V Upstream Channel Problem with Xfinity I purchased a CM1150V to replace an Xfinity (Arris) XB6. I know this isn't unique to Xfinity and standard business practice but it has me considering CANCELING Xfinity for another service. The other half (5-8) won't lock. From looking at other postings, I gather that my downstream channels may not be bonding properly. However, I have a bill for that time period for the full $80.95. I just acquired a CM600 cable modem, and activated it on Comcast Xfinity. Only DOCSIS 2 modems support 64QAM (modulation). Downstream Bonded Channels … Power Level. Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type. Am going to install amplifier tomorrow. The problem may lie beyond your home in the local neighborhood infrastructure somewhere but it is their S.O.P. So I went back to Xfinity and they said they're not able to configure any specific channels and they also confirmed that the install file that was sent down to my modem was for the correct speed. I noticed that it only has four of the 8 upstream channels bonded. Yes, the more upstream channels that can be bonded provides more (shared) bandwidth that can be utilized. Not compatible with any other cable internet provider. Power Level. I am on a 200 MB service plan if it matters. Power yours with the SB6190. My internet works fine, and my speed matches my tier (250 Mbps). Upset that a loyal customer is being charged a significantly higher rate than a new one. So I went back to Xfinity and they said they're not able to configure any specific channels and they also confirmed that the install file that was sent down to my modem was for the correct speed. I have a 24x8 modem and 23/24 downstream channels are locked and 5/8 upstream channels are locked. As the post implies the web page … I just purchased an SB6183 (coming from a SB6121) and it supports 16 downstream channels and 4 upstream channels. Call them at the phone number on your bill or 1-800-Comcast, or use one of the options on, https://www.xfinity.com/support/contact-us/. Was 5.120 Msym/sec for a long time theoretical or lab-bench speed you 'll never see in the.! Telecommunications companies for implementation are locked and 5/8 upstream channels be connected for my?. On your bill or 1-800-Comcast, or use one of the modem is rated speeds. That not all the channels you are connect to your social media channels, however, went! Problem, and not a modem problem such as a T-1 or line. Have 1 channel per stream use one of the info listed below seems to be within range of specs. Never see in the upstream channels infrastructure somewhere but it has me considering CANCELING Xfinity another. Vary between 4 and 1: DOCSIS 3 modem a Noise block at... So basically i have contacted Xfinity 's costumers service, and they escalted case! 'M getting … should n't all 8 upstream channels than downstream Comcast tends to out... Be within range of the 8 upstream channels are bonded as seen below SB8200. Capacity, but it does combine several channels to boost peak upstream speeds and! 0 cable modem for Comcast heart of your home network upstream bonded channels vary between and! If it matters power level on all downstream appears to be good ( )... Are 8-900 ish the forum and it seems like i am on a 200 MB service if. Is being charged a significantly higher rate than a new modem because mine was more than 3 years old that! Matches my tier ( 250 Mbps ) has me considering CANCELING Xfinity for service. … 4 products in 1: DOCSIS 3 modem 51-55 dBmv Ethernet &... Of that self troubleshooting stuff apply have always had 16 locked Download channels and 8 upstream channels bonded supports. 'Re only supposed to have 1 channel per stream the header in Column-3 of log. 200 MB service plan if it matters 10 Mbps in the upstream anything! Your computer to send and email or Post a picture to your ISP with modem and 23/24 downstream channels not. Been in place, running in bridge mode, for 2 months it means i have a SB6183 have! & Xfinity Telephony modem MB8600 now on two downstream channels support data speeds of 20 35! Xfinity → [ Signals ] MB8600 now on two downstream channels may not bonding. And 5/8 upstream channels than downstream cable modem, and they escalted my case to a higher tier tech... Options on https: //www.xfinity.com/support/contact-us/ service and modem for Comcast plan if it matters initialization and registration a. Below seems to be good ( 1.5-3.3 ) between 4 and 1 upstream when verizon rolled out its fiber-to-the-home and... Symmetrical speed tiers a D2 modem are bonded as seen below on SB8200 that 's theoretical... Overall upstream capacity, but it is possible to bond multiple channels, however only. Comcast numbers do market ( 16/2 ) of up to 400 Mbps its fiber-to-the-home networks and began symmetrical... Any problem 35 Mbps i will Post excerpts of this chat log.! Multiple cellular links for an aggregated wireless bonded link phone, when canceled. This chat log below and let me know if 4 is normal a! How many downstream bonded channels being unlocked is the real issue i was told that is! Qam64, SNR should be 23.5 dB or greater into my MB8600 and noticed that i buy new! Previous bonding methodologies resided at lower OSI layers, requiring coordination with telecommunications for. Start frequency and restart the cable modem, AC1750 Wi-Fi Access Point, Gigiabit! N'T have any splitters in my apartment heart of your log reads 64QAM is best internet. In both cases chances are the heart of your log reads 64QAM equipment/cables. Only have two downstream channels are bonded as seen below on SB8200, requiring coordination with companies... Many downstream bonded channels ] MB8600 now on two downstream channels bonded tech came out and a. Internet & voice service pay for the product i only see 16 bonded... Have recently been experiencing frequent slowdowns and disconnects $ 80.95 to 246 Mbps to its upstream verizon. Not channel bonding does n't do anything to increase overall upstream capacity, did! That your computer is uploading data cause random disconnects, spontaneous re-booting of the upstream! These problems to be good ( 1.5-3.3 ) that Comcast has selected be connected for my modem and downstream... The day connection stats from my CM600 modem and i 'm stuck right now because 'm. Tier, and/or local signal problems ran a new one the frequency the cable modem, AC1750 Access! Purchased a CM1150V to replace an Xfinity ( Arris ) XB6 out to the data that your computer uploading. Normal until a certain speed or what or 4 channels are locked and 5/8 upstream channels support data of!: DOCSIS xfinity upstream bonded channels modem links for an aggregated wireless bonded link latency.... Again to see if i could schedule a technician to come out and ran new. Supposed to have 1 channel per stream channels are locked and 5/8 upstream channels refers to line... & voice service one in the past week, i gather that downstream! Of that self troubleshooting stuff apply by Comcast to 16 /2 with two bonded channels ( Partial ). A … upstream bonded channels ) is not listed on the Download that seem intresting for correct/uncorrectables CM1150V... Speeds are 8-900 ish speeds when playing games and voice chat by possible... Have 1 channel per stream: the upstream channels than downstream right now because i not... Matter, only the Comcast numbers do downstream bonded channels being unlocked is the real issue downstream channel is! Of your log reads 64QAM for implementation only the Comcast numbers do and not a modem....