What is channel bonding in docsis?
The DOCSIS 3.0 Downstream Bonding feature helps cable operators offer new, more bandwidth-intensive services by adding one or more additional downstream quadrature amplitude modulation (QAM) channels to the standard broadband DOCSIS system.
What does channel bonding mean on a modem?
Channel bonding combines multiple channels—or lanes—to increase the amount of traffic that a modem’s highway can comfortably support.
What does 32×8 channel bonding mean?
For example, a 32×8 DOCSIS cable modem means that it supports 32 Downstream Channels and 8 Upstream Channels. The higher the number of Downstream channels the higher the Internet download speed supported. At a minimum, you should choose modems with at least 16 Downstream Channels.
What does downstream bonded channels mean?
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).
Is more channel bonding better?
Different Amounts of Channel Bonding and How it Affects Speeds. Cable modems have downstream and upstream channels. These channels are what allow you to download and upload data. And the more channels you have, the faster you can do this.
Why does channel bonding improve performance?
Channel bonding splits your web traffic at the packet level among multiple internet connections. This means that channel bonding will be effective even for the user trying to stream a large movie because traffic is split at a low level.
What are uncorrectable codewords?
Uncorrectable codeword errors are those codewords that are damaged beyond the FEC’s ability to repair it. Uncorrectable errors require that the data be repeated and are usually the biggest concern. If the bits are not repairable the decoder reports an uncorrectable codeword.
How many downstream bonded channels should I have?
Ideal levels are approximately 40 to 50 dBmV for single channels, 37 to 48 dBmV each for 2 to 4 channels. In summary, you have a possible connection problem if any of these conditions is true: No downstream channel is locked.
What is a good channel bonding?
Channel bonding is when a cable modem combines multiple channels to increase the amount of traffic that it can comfortably support. The best example for how channel bonding works is to look at a highway with heavy traffic.
What is codewords in docsis?
Brady: Codeword errors are corrupted bits of data in the transmission or flow. There are two types of codeword errors: correctable and uncorrectable. Correctable codeword errors refer to damaged codewords that can be repaired using the FEC data explained above.
What are Correctables and Uncorrectables?
Correctables are errors the modem was able to correct. Like you said, higher accumulation of uncorrectables are where a problem indicator comes into play. For uncorrectables, the key is to notice an issue and then monitor it.
Should downstream bonded channels be locked?
Acquire Downstream Channel: This should say “Locked”, “OK” or similar. This means your modem found the frequency with which to receive information from the internet. There should always be at least 1 channel acquired with a DOCSIS 1.1 or 2.0 modem.
How many channels does a Docsis 3.1 modem have?
For example, a DOCSIS 3.0 will likely support either 4 or 8 upstream channels, and DOCSIS 3.1 will support 8 channels.
How can I boost my cable modem signal strength?
Top Ways to Boost WiFi Signals & Improve Performance
- Use Latest WiFi Protocol.
- Call Your ISP.
- Use a Cable Signal Booster.
- Optimize Router & Update Firmware.
- Use a Multi Router Network Setup.
- Add a WiFi Booster Antenna.
- Use Powerline Adapter.
How do I set up a bonding channel?
Channel bonding is configured under the Advanced Intel® Wireless Adapter Settings. Device Manager > Network Adapters > [your Intel® Wireless Adapter] > Properties > Advanced tab. Choose Channel Width. A separate configuration parameter exists for each frequency band that the wireless device supports.
What are correctable codewords?
Correctable codeword errors refer to damaged codewords that can be repaired using the FEC data explained above. If the decoder finds that any bits in the codeword were corrupted it will use the extra correction data to attempt to fix the corrupted bits.
What do Uncorrectables mean?
not capable of being corrected
Definition of uncorrectable : not capable of being corrected : not correctable an uncorrectable error … wished to identify and track problems that were uncorrectable at the point of initial editing and loading but which were candidates for later maintenance, update, or enhancement.— Stacie Traill.
How many Docsis 3.1 channels should I have?
8
For example, a DOCSIS 3.0 will likely support either 4 or 8 upstream channels, and DOCSIS 3.1 will support 8 channels.
What is DOCSIS upstream channel bonding?
DOCSIS 3.0-based upstream channel bonding is a method for increasing upstream bandwidth up to a maximum of 120 Mbps raw throughput per CM user in a cable communications system that includes a Cisco CMTS router and multiple CMs.
How to configure the basic upstream channel bonding configuration?
The upstream bonding-group should include all the upstream channels either from Group 1 or Group 2 only. Exits upstream bonding configuration submode and returns to privileged EXEC mode. You must add upstream channel controllers to a fiber node in order to complete the basic upstream channel bonding configuration on a cable interface line card.
What is channel bonding in CMTs?
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. 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.
How to avoid dynamic TCS creating sub optimal bonding scenarios?
For example, if four upstream channels are available, channels 0+1 and 2+3 should each be an USBG to avoid dynamic TCS creating sub optimal bonding scenarios. Alternatively, you can choose to shut down any upstream channels that is not configured in USBGs which is not be used for bonding.