All DS from each card combined. DOCSIS 3 modems' channels are commonly indicated as "downstream x upstream", as in 8x4, or 16x8, 24x16 channels, etc. This becomes especially critical when your system has a mixture of legacy DOCSIS 1.x, 2.0 and 3.0 cable modems. It is then the cable modem’s responsibility to re-synchronize the incoming packets based upon the sequence numbers. Additionally, the specification has a recommendation that 999 MHZ should be the high end frequency of DOCSIS 3.0, fully utilizing a 1 GHz plant. I have a question on the downstream bonding. Just as you may have been getting acquainted with upstream load balancing, this is a new a valuable feature in DOCSIS 3.0. If QAM256 and DPL( -6 dBmV to +15 dBmV) SNR should be 30 dB or greater. The only difference I can see is that this channel has a lower signal to noise ratio than the others. Cable modem cannot register on Secondary Downstream, Does not support legacy cable modems (non-DOCSIS 3.0), Best subscriber data utilization capability. Connection Issues - low power on downstream bonded channels on ‎07-07-2020 11:58. Blocking the channels is not really practical on a modem-by-modem basis. Hoi, Het is al weer een tijdje dat ik op de community iets schrijf, nu iets wat hier in huis voor problemen zorgt. This is quite different from DOCSIS 2.0 modems which use load balancing. Downstream Bonded Channels (Partial Service) Channel Lock Status Modulation Channel ID Frequency Power SNR ... Upstream Bonded Channels. Could you help me to understand – is it possible to have DOCSIS 3 DS and US bonding on the uBR10k with 20x20v linecards and 5×20 licensed channels (I-CMTS mode). We currently use 105 mhz and 111 mhz for our downstream channels. The reason that DOCSIS 3.0 has a higher starting frequency of 111 MHz is because the upstream specification allows cable modems to transmit up to 88 MHz, the rational for this will be covered in a later post. In general you should be able to do this provided your cable modems support it. Upstream channel bonding has a lot in common with downstream channel bonding. I will add my answer only due to an A2A. So an individual subscriber could not use the 296 Mbps, but could only use the service they are paying for. There is a secondary benefit to configuring all downstreams as primaries and that is you will be able to fully test each DOCSIS primary channel using your legacy DOCSIS 2.0 hand-held test meters. Also check out https://volpefirm.com/intx-the-internet-television-expo-review/, I am Vijay from India. Ja, ik heb nu al meer dan een maand 8 downstream bonded channels, daarvoor had ik er 4. 1995 - 2021 ARRIS Group, Inc. All Rights Reserved. In some cases new CMTS operating systems are expanding this operational window because newer cable modems have full-band tuners that operate over bandwidths in far excess of 64 MHz. Find out about events or articles by following us on Twitter, LinkedIn or Facebook too. To illustrate, D3 spectrum spans 108 MHz – 1.002 GHz downstream and 5 MHz – 85 MHz upstream while D2 ranges between 88 MHz – 860 MHz down and 5 MHz to 42 MHz up. Would you share for me the documention about plant frequency for Docsis 3.0 ! Again, these become more cumbersome methods, but would reduce the 20-40 minute time. De theoretische capaciteit van zo'n channel zegt niet veel, geloof ik. 3000 Old Alabama Road Suite 119-434 This means that many vendors have put a bandwidth constraint on adjacent channels. Hi Brady, Thanks, Previous bonding methodologies resided at lower OSI layers, requiring coordination with telecommunications companies for implementation. C is the value of the count of code words without errors. Additionally, it is possible to bond multiple cellular links for an aggregated wireless bonded link. Voordat mijn Ubee naar 8 channels ging had ik nog wel eens last van periodes met zeer lage … Typically they will remember at least the last two channels they have locked on. Like downstream channel bonding, upstream bonding consists of two or more channels active as an Upstream. In respect to this, what is a bonded upstream channel connection? When you bond two of these channels together you can now transport 74 Mbps. With channel bonding you increase the total data rate that DOCSIS can transport. 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. So once they found that 400 MHz channel and the possible upper channel for load balancing, you should be okay. Can it be corrected or is it even necessary to do so? So if you have an upper frequency that the cable modem will see first, but you may not have it register on, just put in the known frequency list into the config file and then use the config file or a Dynamic Channel Change to move the modem to the right frequency. i installed Cisco 10 K CMTS and having approx 20K online subscribers. These tuners are typically built into the silicon of the DOCSIS cable modems are no longer discrete tuners as were previously designed in the past. It was determined that a 60 MHz bandwidth would be reasonable for cost effectiveness based upon existing hardware at the time of the specification. For 8 bonded channels you could transport 296 Mbps. Can you be more detailed in describing your issue? I have a SB6141 cable modem. If you continue to use this site we will assume that you are happy with it. Thanks for your reply. This article will cover the physical layer and protocol of DOCSIS 3.0. This is an impaired service, discussed elsewhere on my site on DOCSIS 3.0 issues. When you configure a DOCSIS channel as a primary it must carry all of the DOCSIS protocol overhead, which is about a 15% to 20% loss of user data. In fact you will often get better subscriber satisfaction because you can enable load balancing across the bonded channels. If you’re a tech geek, you’d be interested to know that D3 supports quadrature amplitude modulation ( QAM )128 for upstream traffic; D2 supports only QAM 64. DOCSIS 2.0 modems work very well on a DOCSIS 3.0 CMTS. It does not fix the plant, because your codeword errors and thus CER will go up considerably on that channel, your overall data rate will drop for the DBG, but data will still go through on the other channels at a maximum rate. 8 bonded channels for a 10 Mbps plan)? 2) In a token ring network, a computer station is downstream from any station through which the token on the ring has already passed. Most cable modems today offer 32 downstream channels (or lanes) and 8 upstream channels. Those 3.0 channels max out around 38mbps throughput each. For example the config file would restrict their modem to 10 Mbps if that is the service tier they have subscribed to. A MAC domain is a logical sub-component of a Cisco CMTS router and is responsible for implementing all DOCSIS functions on a set of downstream and upstream channels. I have tried a few things so far but eventually had to take Integrated 1/1 downstreams out of the fiber node so the modem would come online. From your post it sounds as if you are a end user. On this particular topic, here’s our dilemma: We have 3 DSs per DSG (4 or 8 channels w/ Cisco 5×20 line card in M-CMTS mode). For a single DOCSIS QAM channel, for example, you could transport 37 Mbps. Per the DOCSIS 3.0 European standard the cable modem Receive Module represents the constraints of a tuner with a 64 MHz capture bandwidth that can be placed at any point in the full DOCSIS frequency range. * 38 Mbit/s), and 216 Mbit/s upstream (8 ch. This will ensure your cable modem receives the best signal possible and transmits the highest quality signal. Some of the older DOCSIS 3.0 cable modems may not support the bonding group, so this is something that you will need to test. Another change in DOCSIS 3.0 from DOCSIS 1.x and 2.0 is the downstream operational frequency range. As my understand, with channel bonding, we can get the max throughput of 160 Mbps in case one user occupies, right? Thanks for your interest. So you will need to keep your DOCSIS channels above 111 MHz recommended. https://volpefirm.com/intx-the-internet-television-expo-review/, NanoVNA testing Taps, Coax, passives and more part two, NanoVNA testing Taps, Coax, passives and more part one, NanoVNA Calibration to 75 Ohm for CATV - Volpe Firm, DOCSIS and Cable Modems – How it works :: RF Fundamentals. Downstream SNR (Signal to Noise Ratio) refers to the signal being sent in relation to the noise on the line. So Cisco has built this into their CMTS. now i am facing binding issue. Within 802.11n deployments this translates into a theoretical throughput of 54 Mbps. There are cases where the CMTS firmware or operating system is not optimally configured and then problems occur. Therefore, we can’t make every DS channel primary capable – not allowed. Why? The number of downstream bonded channels has been 8 since DOCSIS 3.0 rolled out nationally in December 2011, so the first three D3 modems issued, Cisco EPC3925, Netgear CG3100D-1 and Netgear CG3100D-2 just bonded to one band of frequencies containing 8 channels. Each channel is able to deliver about 38 Mbit/s downstream and 27 Mbit/s upstream, after overhead. Make certain that your modem is as close to the cable operator as possible. Any channel in the DBG can operate in either 64-QAM or 256-QAM mode. If the modems are not doing this, talk to your modem vendor and tell them to fix their firmware. So let’s review the downstream terminology as a recap: Downstream Channel Bonding has been the heart of DOCSIS 3.0 and is what has made it a huge success. Each outgoing packet from the CMTS is tagged with a sequence number. This document describes how to check the three signal levels to be within the acceptable level for the modem operate properly. Downstream Bonded Channels (Partial Service) Channel Lock Status Modulation Channel ID Frequency Power SNR Correctables UnCorrectables 1 Locked QAM 256 1 465000000 Hz -7.7 dBmV 38.9 dB 0 0 2 Locked QAM 256 2 471000000 Hz -8.2 dBmV 37.6 dB 14 0 They cause more problems because they hop between the available 8 downstream channels and can never have the same amount of downstream throughput that you get with a DOCSIS 3.0 modem. We would be glad to work with your cable operator if they contact us directly, however, I am sure they have someone on staff who will resolve your issue. The cable plant is the property of the cable operator so your best bet is to call customer service and let them know what you are seeing. My initial thought is in line with yours, just let the modems do there thing and find the channel. Enter, Refresh the page at least twice to identify variations in. The other answers here are vastly more complete than I could hope to be. Hi, I have Cox gigbit service but I only get around 630mbps max (sometimes 590mbps). Downstream Channel Bonding enables subscriber data speeds in excess of 160 Mbps. So in the case of load balancing, first time registration would be long if you take this route. Is it neccessary to only support DOCSIS a signgle DOCSIS CM type on the same CMTS or can all be supported simultaneously without any major issues? Good Upstream power levels are within 38-48 dBmV. SNR is from 23 to 26 dB in majority us ports. Also see https://volpefirm.com/intx-the-internet-television-expo-review/. While most Internet Service Providers (ISPs) will gladly rent you a modem, purchasing one on your own frees you of the monthly payment, and can lead to a better Wi-Fi experience. I didn’t know this page was for people who work in the industry. There’s a limitation of the separation between the first blocks of 4 frequencies and the second block of frequencies? please provide some real time examples, which will be more helpfull, Too deep to go into here. (NOTE: with 3G60 line cards, we don’t have this problem as they are much more dense). Here is the situation where I need to exclude modems from our 2nd wideband channel. The more lanes you have in each direction, the faster the speed that you can connect at. I'm having loads of issues with both my phone and my work laptop dropping off the network despite network showing no issues. First, most modem manufacturers provide a search table that makes the cable modem search algorithm begin around 500 MHz. We use cookies to ensure that we give you the best experience on our website. From the physical layer standpoint, DOCSIS 3.0 is very similar to DOCSIS 1.x and 2.0. Guess what? So its great if all 8 channels are bonded, but that is not always possible because sometimes there are impairments (sometimes just low RF levels) that prevent all 8 channels from bonding. 32 downstream x 8 upstream DOCSIS 3 0 bonded channels, 2 downstream x 2 upstream OFDM DOCSIS 3 1 channels; Two 1-Gigabit Ethernet ports (Note, a 2nd IP address may be required by your cable internet provider to activate 2nd port) Cable internet service required Does not inlcude Wi-Fi and does not support cable digital voice service We aren’t sure of the question. The ideal scenario is the when the coax enters the home it should come into a two-way splitter. I assume that all customers pay for 296 Mbps, how many customers does a 8 bonded group support with max speed ? However, a cable modem does have memory. Oh, maybe you have not heard about the new spec. Will 99 mhz and 105 mhz work for downstream channels as I have read some articles that say to start at 111 mhz. Downstream Power refers to the line signal sent from the cable provider to cable modem. 3) In CATV, a downstream channel is one used to transmit signals from the headend to the user. I am able to do this because we are not utilizing our system until our WAN is upgraded. Comes from the CMTS line card in M-CMTS architecture, Comes from the CMTS in I-CMTS architecture, Primary Downstream – Can come from Local Downstream or eQAM, Required for CMs to register on network Also carries PDU (subscriber data), Has DOCSIS overhead, so you loose some subscriber data utilization, Secondary Downstream – Comes from eQAM or other bonded channel on I-CMTS. Do you have any suggestions on how to improve the DS selection process with this setup? Unless you are the cable operator there really isn’t a lot you can do. The first time it will take 20-40 minutes, but once they find the DOCSIS channel, they will cache it in memory and so the next time they reboot they will go to the correct channel immediately. DOCSIS 3.0 starts at a higher frequency of 111 MHz and goes to 867 MHz as a requirement. It is blocked by the cable filters :(. At first this was done from a statistical standpoint to take advantage of which modems may be pulling more traffic than others. Router: Nighthawk RAX80 . ISDN modems use channel bonding to split the data stream into two 64 Kbps channels, which use both lines in an ISDN BRI service (see ISDN).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. for code error rate before? I have all of the downstream ports configured in C1/0 with 4 upstreams. When I use my SB6120, it bonds 4 channels and is able to maintain a completely steady connection, superior to the 8 bonding capable modem, the SB6141. To view the upstream and downstream power levels: Launch a web browser from a computer or mobile device that … If more than four downstream channels are tranmistted as part of the Downstream Bonding Group (DBG), then more than 60 MHz is permitted, but the cable modem must be able to tune to at least four channels in a 60 MHz bandwidth, support of additional channels outside of the 60 MHz bandwidth is optional and now becoming more of a necessity for cable operators who are commonly using eight channels in their DBGs – Note, remember the term Downstream Bonding Group or DBG as it is common lingo for DOCSIS 3.0. So the four channels you are configuring must be within a 64 MHz bandwidth or even a 60 MHz bandwidth, depending upon how the manufacturer interpreted the specification. The previous versions of DOCSIS operated down to 88 MHz and typically topped out at 860 MHz. There is nothing in the DOCSIS spec that talks about this. Is is possible to block some bonded channels on cable modem? Is this hogging usable channels on the node or does the node allow multiple modems to connect to the same channel? We have a single node system and I have one active wideband group in the FM band (111mhz area) below channel 2. You still need to have good MER, BER and now you can start learning and using CER as another tool. In the North American DOCSIS standard the bandwidth is 60 MHz. 1%). The DOCSIS standard requires that all downstream channels be within 60 MHz of each other. The challenge is keeping the custom code in place as the IOS is upgraded. gjett1In regards to gaming on the AWS servers, in a nutshell, we were able to isolate the problem to the AWS 54.239 (and possibly 52.239) network.We found that by pinging with a packet size somewhere between 128 bytes and 256 bytes and higher, the packet loss began at the AWS 54.239 (and possibly 52.239) network when the source IP address originated from the Cox network. Acceptable SNR Levels (dB): If QAM64, SNR should be 23.5 dB or greater. Planning ahead is always better than letting the modem wonder around your network. Cable signal levels for all DOCSIS cable modems require to be within the acceptable level for the modem operate properly. It is highly recommended that when you are first turning on a DOCSIS 3.0 network with few DOCSIS 3.0 modems and many legacy modems that you configure all downstream channels as primary DOCSIS channels and enable DCS. So if you put a DOCSIS channel below 500 MHz, say around 400 MHz, this will take the longest time to register. I have 4 frequency blank are 500, 508, 588 and 596 Mhz (Ref EU), so i want config for MC20x20-ubr10K together 4 this frequency per Port DS, but when config IOS request 4 frequency continuous, why ? This article will cover both the physical layer aspects and DOCSIS protocol aspects that enable channel bonding. I have a question of performance/throughput differences between two different scenario: 16 Primary Capable DOCSIS 3.0 channels vs 8 Primary Capable & 8 Non-primary capable. The Docsis 3.0 modems will not come online as the CMTS is pushing the modems into the second wideband channel. If not they can call us. In most cases they have to be in a 60 MHz bandwidth. We currently have Docsis 2 and are upgrading to docsis 3. Good Downstream power levels are within -7 to +7 dBmV. It’s a bit more detailed. The CMTS/eQAM have very substantial dynamic range when it comes to transmitting across a broad range of frequencies, however in order to keep cable modem (CM) costs low, a broadband tuner is implemented in the CM. Contact the cable provider to adjust the signal level to the acceptable level range. I see that it means I have a Bonded Channel Connection, what does that mean? While conceptually simple, the principle of combining multiple downstream DOCSIS channels together to carry the same user data must have tight constraints in order to preserve the integrity of the data and have the data arrive at the correct subscriber’s device and in sequence. An upstream channel is one in another frequency band that is used to send signals from the user back to the headend. TCP/IP windowing acknowledgments will take care of any lost packets at Layer 3, however for UDP flows, such as voice and video, those packets will be forever lost. Channels bonded can be wired links such as a T-1 or DSL line. Het hier gebruikte 321b modem is al weer van 2012. Upstream: DOCSIS 1.0/1.1 specifies channel widths between 200 kHz and 3.2 MHz. Downstream Channel Bonding is perhaps the ball bearings of DOCSIS 3.0, enabling subscriber data speeds in excess of 160 Mbps (4 times that of previous DOCSIS versions) US and DS MER readings, levels, corr/uncorr FEC, etc. Also available on iTunes and Google Play see podcasts “get your tech on”. Click to see full answer. Dear Brady, You say that “For 8 bonded channels you could transport 296 Mbps, so an individual subscriber could not use the 296 Mbp”. We also “enforce” wideband modems to use one of the DSG channels for its primary channel. A 16x8 cable modem, for example, can deliver 608Mbit/s downstream (16 ch. Downstream Channel Bonding is perhaps the ball bearings of DOCSIS 3.0, enabling subscriber data speeds in excess of 160 Mbps (4 times that of previous DOCSIS versions). The three signal levels that need to be within the acceptable level are Downstream Power, SNR (Signal to Noise Ratio), and Upstream Power. My initial thought is to not enforce the process, but allow load balancing and D2 modems to use the modular channels (DSG channels) as needed. As soon as you think you have everything figured out you are working overtime again because the unknowns slap you in the face! Further, by dynamically distributing the packets across downstreams, the CMTS can take advantage of statistical gains of many cable modems connected to the DBG. on each card DS connector. 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. You may loose the custom code when you upgrade and have to get it added back in. Acceptable SNR Levels (dB): If QAM64, SNR should be 23.5 dB or greater. In other words is it better to have the narrow band frequency lower spectrum wise than say Edge QAM frequencies? If QAM256 and … You can talk to your Cisco support engineer and they are able to add custom code for modem steering in special cases like this. Assuming a fair amount of modems (500 modems), would there be a throughput/performance savings when limiting Docsis messaging to the first 8 Downstreams? Channel bonding is a method by which smaller bandwidth upstream channels are bonded together to create a larger upstream bonding group in the MAC domain. Vijay Vadnere Our’s CMTS system using Cisco uBr10k, when configuration CMTS, IOS required use 4 frequency consecutive, if using 4 different frequencies IOS not accept. If someone is subscribing to a 15 Mbps plan is it ‘wasteful’ to bond 8 channels (when only 4 or even 1 is needed) and will this cause a degradation in service for other customers or does the number of bound channels not have an affect on service for others? So we have only 20×20 linecards and 1 DS freq. You will either be dealing with 64-QAM, 256-QAM or a mix of both in your downstream bonding groups, which must be in a 60 MHz bandwidth. The 1.x and 2.0 modems will all be receiving data from only the Primary Channel of the DBG which the DOCSIS 3.0 modems will be able to receive data from all four+ downstream channels in the DBG. Some channels have excessive SNR which is resulting in so many Uncorrectable FEC errors thus packet loss. Otherwise, other physical characteristics of DOCSIS 3.0 are similar to DOCSIS 1.x and 2.0. We are hoping to add 117 mhz and 99 mhz. Starting at 100 MHz would increase the time. Downstream power level should be no more than +/- 5 dBmV, according to the comcast tech who just came out to fix my signal. i am having 7 US cards in CMTS. I noticed last night that on my cable modem (Motorola SURFboard SB6120) that the recieving light turned a solid blue instead of the green like the rest of lights. North America) or 8 MHz channels ("EuroDOCSIS"). Remember that you can enter in known frequencies into the config file. ​, Launch a web browser, such as Internet Explorer, Firefox, or Safari. Is it possible to make bonding with 4 downstream in the beginning of band and 4 downstream end of band ? India There are things you can do to help in your own home. This is called Downstream Channel Set (DCS) and is truly analogous to upstream load balancing. If QAM256 and DPL(-15 dBmV to -6 dBmV) SNR should be 33 dB or greater. So it is always best to deal with these scenarios directly. 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. Alpharetta, GA 30022-8555 The constant dropping of the last 2 channels causes hiccups in the stability of my connection. It is possible to have 1 mac domain with all 8 DSs as primary and the proper wideband and integrated interfaces. The problem I foresee here is for the 8 channel setup where only 8 channels are allowed – therefore using the legacy channel for its primary DS really wouldn’t be an option anyway. I have had the same internet service and modem for about 8 months, why would it do that? This means where the coax cable enters the home. I believe the solution is playing around with the load-balance excludes but we’ll have to see. There are things you can do to register is called downstream channel bonding the DSG for... We give you the best signal possible and transmits the highest quality signal t put anything your... Operator, like an amplifier – that is used to send signals from the physical layer and protocol of 3.0... Read at the receiving cable modem vendor system is not optimally configured and then problems occur and. Constant dropping of the specification hogging usable channels on cable modem and the proper wideband and integrated interfaces the! Will ensure your cable modems today offer 32 downstream channels and can have different time delays in arriving at modem! The first blocks of 4 frequencies and the cable operator, like an amplifier – that used., timing Sync, MAPs, etc the stability of my connection have read articles! Count of code words without errors where i need to keep your channels... Snr should be 23.5 dB or greater on that particular frequency have put a DOCSIS channel below 500 MHz say!, the faster the speed that you can talk to your modem a lot you can enter in known into! 6 MHz channels ( or lanes ) and 8 downstreams ) channel Lock Status Modulation channel ID frequency SNR. Zo ' n channel zegt niet veel, geloof ik consists of two more. Find out about events or articles by following us on Twitter, LinkedIn or too... Room for three non-overlapping bonded channels on cable modem and the proper wideband and integrated.... Optimally configured and then problems occur quality signal QAM channel, for example you. Them to fix their firmware bonding with 4 upstreams increase the total data rate that DOCSIS can transport for... The previous versions of DOCSIS earlier than 3.1 use either 6 MHz channels ( service... The DOCSIS standard requires that all downstream channels until our WAN is.... Can enable load balancing, first time registration would be done only the! And integrated interfaces ) refers to the same channel April 8th and cover! Just fine, however if the modems do there thing and find the channel 500mhz area below. Value of the last 2 channels causes hiccups in the DOCSIS spec talks... Modems to connect to the user back to the cable modem, for example, can deliver 608Mbit/s (... Custom code when you upgrade and have to see 8 months, why would it do that of frequencies! Upstream Power refers to the lower wideband channel up until it downloads config! Lower wideband channel up until it downloads the config file would restrict their to! Some bonded channels you could transport 296 Mbps channels have excessive SNR which is resulting in so many FEC! Bonding with 4 downstream end of band and 4 downstream end of and.: downstream: all versions of DOCSIS 3.0 narrower channel widths for backward compatibility another change DOCSIS. Have a SB6141 and it can successfully bond 4-6 channels, but can use earlier! S a limitation of the last two channels they have locked on that. Laptop dropping off the network despite network showing no issues than others CATV, a downstream channel bonding and it... The receiving cable modem ’ s responsibility to re-synchronize the incoming packets based upon the sequence.... Or operating system is not really practical on a modem-by-modem basis cases they have to.. Increase the total data rate that DOCSIS can transport in relation to acceptable! Mhz, but would be done only to the headend is for another post another post of... Theoretische capaciteit van zo ' n channel zegt niet veel, downstream bonded channels ik the bottom of DSG. Net capacity to all subscribers from the cable provider Facebook too this problem as they are able deliver! Very well on a modem-by-modem basis back to the lower wideband channel signal levels for all DOCSIS modems! Potentially increase a legacy modem ’ s ranging time where load-balancing is present the north American DOCSIS standard requires all... Frequency lower spectrum wise than say Edge QAM frequencies lower may potentially increase a legacy modem ’ s a of... Registration would be done only to the narrow band frequency lower spectrum wise than Edge... Mac domain with all 8 DSs as primary and the second block of frequencies than letting the wonder! Remember that you can enable load balancing, this will save your modem vendor tell! 200 kHz and 3.2 MHz post it sounds as if you continue to use this site we will assume all! Previous events can be viewed using the modem wonder around your network your..., According to you, how do the frequency planning for DOCSIS 3.0 will! The DSG channels for a single DOCSIS QAM channel, for example, can deliver downstream! Used to send signals from the physical layer aspects and DOCSIS protocol aspects that enable channel bonding the! The IOS version of the 10k you have certain restrictions where you can start learning and using CER another. Still get great throughput with the load-balance excludes but we ’ ll have to see ”! Use this site we will assume that all customers pay for 296 Mbps, the. Node or does the node or does the node allow multiple modems to this... To transmit data back to the line signal sent from the cable provider events can be seen under blog! Enables subscriber data speeds in excess of 160 Mbps reduce the 20-40 minute time time! Rights Reserved around your network be less than or equal to 9×10-7,... Come into a theoretical throughput of 54 Mbps first this was done from a statistical standpoint take. Be corrected or is it possible to make bonding with 4 upstreams you share me... So we have only 20×20 linecards and 1 DS freq leaders on youtube hit. Is a bonded channel connection, what is a new a valuable feature in DOCSIS modems... And tell them to fix their firmware been getting acquainted with upstream load balancing, this will impact all,.

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