Re: Intermittent connection and only 1 upstream bonded channel on ‎10-04-2020 17:58 Only one upstream channel is not normal it should be four and 5.7 is actually 57 (a bug in the hub 3 puts the decimal point in the wrong place) which is well above the recommend max of 51. Channel bonding can increase your internet speed by nearly 50%. A 16-QAM 3.2 MHz upstream channel will deliver about 8-9 Mbps net. Hello, I have been working on a 16x4 configuration with a uBR10k in a lab using docsis 3.0 modems. Solid Green: None - one upstream channel is in use: Blinking Green: Scanning for an upstream channel. Provides internet access to a single device. However, the power level on 1 of the upstream is 0. See modem teaming . (8x4 modems) However, it appears that the modems will only bond with one upstream channel, and that channel will vary from modem to modem so its clear they're all being used. The modems will connect to the cmts fine and the downstream will bond with 8 downstreams just fine. Once the modem was activated, it bonded to all 24 downstream channels (yay! And then I noticed this when I looked into my Hitron CGN3ACSMR Modem/router, Only one … The DOCSIS 3.0 standard for cable modems supports a minimum of four cable channels bonded together to greatly increase subscribers' upstream and downstream speeds. None - multiple upstream channel is in use: Blinking Blue: Negotiating multiple upstream bonded channels. Checking with Arris they stated that the SB8200 requires a minimum upstream signal level of 45 dbmv. used?) You can use either Wi-Fi or Ethernet. These are classified into two types, upstream and downstream. Ideally, it should be as close to zero as possible. The first step is simple. I have checked the drop line from the street to my house and these are what the values show in the image. Frequency 675000000 Hz. The current levels provided by Comcast are 38 - 42 across the 4-upstream channels. Only one port is active at a time. The bonding of … Older version DOCSIS 2.0 modems can only utilize one downstream and one upstream channel at a time and it’s forced to use the channel the cable company’s headend tells it to use. Day 3, one more upstream channel dropped and only one upstream channel remained bonded. You'll have some downstream channels and also some upstream channels. ), but only 4 upstream channels, out of the 8 available on my modem. Please Reload/Refresh this Page for a new reading 5 dBmV . Also, the signal to noise ratio is 0 on one of the downstream channels (between 38.3 and 39.0 on all others.) The solution was to add cable mtc-mode under cable 1/0 and cable 1/1. I know there is one solution on the Comcast forums. My Motorola MB7420 upstream front panel light is green indicating it is only connected on one channel. DOCSIS 3.0 gains bandwidth by bonding together 6MHz channels, each of which can carry about 38Mbps. Interestingly, upstream light is green (indicating DOCSIS 3.0 for upstream/send)? Day 2, two upstream channels dropped and only two upstream channels remained bonded. I bought the C7000 Nighthawk in hopes to use all 8 Upstream Bonded Channels provided, although as soon as I set everything up, it only uses 3 out of 8 Upstream Bonded Channels. Neither Microsoft nor macOS computers can bond two different connections on their own. These Quorans are beyond knowledgeable about such things. I will add my answer only due to an A2A. Forum discussion: My sb6183 used to bond with 4 upstream channels before I got Maxx upgrade to 200 MB. I'm currently testing both Netgear and SA Docsis 3.0 modems with IOS 12.2.33(SCC3) and I cant seem to get it working right :| I'm seeing modems registering as MTC-modems (/UB) with only one US (with two in the configured bonding group). So, because you're bonded you usually can only max out one line or in speed tests? Only one channel upstream, how to get more? The downstream light does show blue on the front of the modem (indicating that DOCSIS 3.1 is being used for downstream). For ultra-high-definition (UHD) television, only three or four channels would fit on a 36 MHz transponder. Broadband bonding is a type of channel bonding that refers to aggregation of multiple channels at OSI layers at level four or above. Forum discussion: 3 channel upstream bonding was enabled in my area a while ago and for a long time it worked great. Verify all cable connections and try resetting the modem. The status page seems to indicate that I have four upstream bonded channels. This question is about "Motorola MB7420 upstream channels", with Time Warner Cable internet and apps. Hello, I just bought a C7000 Nighthawk to replace my SBG 6700ac due to internet drops. ... Posted January 25, 2015. Downstream Bonding Channel Value Channel ID 11. Today I upgraded to a 24x8 channel DOCSIS 3.0 modem (The Motorola MB7621), from the 16x4 channel modem supplied by Spectrum. The modem indicates 3.1 / blue on the downstream but the upstream is showing 3.0 / green. If I remove the US attribute masks I can get the modems to Verify all cable connections and try resetting the modem. Additionally, it is possible to bond multiple cellular links for an aggregated wireless bonded link. Each one has separate power levels and SNR listed for it. The other answers here are vastly more complete than I could hope to be. What about the CMTS? For some reason, my Arris SB8200 modem's status page shows only one channel being locked (e.g. Hello, This is my first post I've been having issues with my internet connection for a while now specificaly packet losses at peak times which would hit 25-30%, and during the day they linger around 5-10%. Support. After upgrading to the DPC3008, I have only 1 downstream channel and 1 upstream channel. The power level on all downstream appears to be good (1.5-3.3). Channel Bonding. Interestingly, the per-channel reduction doesn’t exactly follow the basic P max – 10*log 10 ( N) relationship. The SWM-8 uses 2.3Mhz, while your cable modem upstream is 23Mhz+. The modem used to bond to all 4 channels, now it only bonds to 2 channels. out of my modem's 32 channels?!? However, there is only one Engineer there that knows how to escalate this issue to to get the problem resolved. SBG6580 enables channel bonding of up to eight downstream and four upstream channels – which allows an operator to offer their customers advanced multimedia services, capable of data rates of over 300 Mbps in DOCSIS and 400 Mbps in EuroDOCSIS in the received (downstream) data stream and over 100 Mbps in the send (upstream) data stream. 24x8 channel bonding. Day 2, two upstream channels dropped and only two upstream channels remained bonded. Instead, they use only one connection at a time. After taking a look at the modems signals, it shows I only now have 1 upstream bonded channel, when before I had 8; which 4 were active. A 24-channel modem could deliver 912Mbps downstream, and 32 channels … I've had TWC send "refresh signals" to … This means if you have a download speed of up to 6 Mbps, you could potentially get up to 12 Mbps with channel bonding. Relatively soon, there will be DOCSIS 3.0 modems that can handle even more channels. I used to have Comcast's 105 Mbs service, which uses 4 bonded channels downstream and 2 bonded channels upstream. Channels bonded can be wired links such as a T-1 or DSL line . A 64-QAM 6 MHz downstream will deliver about 28 Mbps net throughput. Connect your computer to the first DSL line. And it is not his job to do so. To achieve Gigablast or Ultimate speeds, a DOCSIS 3.1 modem is required. When downstream DOCSIS channels are bonded, the per-channel maximum power also drops. I've had TWC send "refresh signals" to … My SNR and power levels are all well within acceptable ranges and I bond to all 4 channels upstream. Channel bonding provides cable operators with a flexible way to significantly increase downstream speeds to a maximum of 160 Mbps, and upstream throughput up to … Day 1 of activation, all four upstream channels bonded. For the traffic above, two downstream channels and one upstream channel are required, whereas a typical CMTS configuration has a 4:1 or 6:1 upstream:downstream port ratio, the inverse of what is needed. You can view bonding by logging into the modem.Verifying the Upstream Channel Bonding ConfigurationUse the following show commands to verify the upstream channel bonding configuration:•show cable mac-domain upstream-service-group•show cable fiber … Day 1 of activation, all four upstream channels bonded. My modem is a fairly new Cisco DPC3008. I am not familar with this technology though, so I think the best way to test is to bypass the equipment and see how your signal levels change on the modem. Downstream Modulation QAM256. It has 8 downstream and 4 upstream channels. My issue is that i checked the gateway page for the Netgear AC1900 c7000 we own and i have only 1 upstream channel locked and 7 others which are blank but all 24 downstream channels locked in. Now I only get one blue light on my modem and one upstream channel. Increasing your internet connection speed would allow for more devices to be connected at once or for better quality online activities, such as streaming or gaming. Downstream power levels should be between -10 dBmV and 10 dBmV. When multiple upstream bonding groups are configured under a MAC domain, the utilization is unfair. One of my colleagues, Frank Eichenlaub, has seen upstream CNR degraded by as much as 16 dB because of misaligned fiber links! Day 3, one more upstream channel dropped and only one upstream channel remained bonded. Has anybody succeeded in combining Cable Modem steering with Upstream Bonding ? It allows me to get over 10 Mbps upstream speeds. NOTE 1: A typical setup for Internet access consist of connecting one computer or a Wi-Fi router directly to the cable modem. Restrictions: This feature is supported only on one upstream bonding group under a MAC domain. Signal to Noise Ratio 38 dB. Connecting a Wi-Fi router to the SB8200 is recommended when there are multiple client devices in the home network. Its probably more likely that your area is not congested enough to warrant them opening all 4 upstream channels. Upstream bonding was only working on one channel. Is my modem broken? This feature balances the utilization only if there is one upstream channel bonding group configured per MAC domain. Power Level The Downstream Power Level reading is a snapshot taken at the time this page was requested. 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