mclaver
join:2001-04-28
Minneapolis, MN | reply to EG
Re: SB6120 and number of Channels Bonded Sorry for not being clear. My original question was why did I have three channels bonded yesterday with over a 40Mb download speed and today I have only one channel, and a download speed in the 20Mb range.
How many channels should be bonded with an SB6120 modem, what determines how many channels will be bonded, and does additional bonded channels increase download speed? |
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 EGThe wings of lovePremium
join:2006-11-18
Union, NJ
kudos:9
2 edits | said by mclaver: and does additional bonded channels increase download speed? Yes. And additional bonded up/down channels increase the total bandwidth available for all subscribers on any particular node/segment so that they all may more or less equally share in the increased throughput speeds.
I'm sorry but that is the only thing that I can answer correctly as I am not a CC employee. |
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 espaethDigital PlumberPremium,MVM
join:2001-04-21
Minneapolis, MN
kudos:2 | reply to mclaver
I've noticed that if they perform maintenance on the CMTS and my modem loses sync sometimes only one channel will be locked when service returns. A powercycle of the cable modem will usually return sync to all 3 channels. |
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 DarkLogixPremium
join:2008-10-23
Baytown, TX
kudos:3 | reply to mclaver
each channel provides roughly 38Mbit
so on ultra you only "really" need one but if you get more then Powerboost can have more room to work
and if you only get one its easier for that one to get congested and thus see lower speeds |
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mclaver
join:2001-04-28
Minneapolis, MN | reply to espaeth
I tried what you suggested and powered down my modem. I am now bonded to three channels again and my download speeds jumped back up to 47 Mbs, my upload speeds are 12.5 Mbs. Not bad for an Ultra customer. I will have to watch this if I ever do a large download, because that made a lot of difference. Using channels 45, 46, 47 and all three channels have a 36 DB SNR. |
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EGThe wings of lovePremium
join:2006-11-18
Union, NJ
kudos:9
2 edits | reply to DarkLogix
said by DarkLogix:each channel provides roughly 38Mbit That would be dependant on the actual width of the channel, and the particular modulation scheme being used. |
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DarkLogixPremium
join:2008-10-23
Baytown, TX
kudos:3 | well of course but talking downstream 256QAM |
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mclaver
join:2001-04-28
Minneapolis, MN | I have another question. I am consistently getting over 45 Mbs on all of my computers except one. That one is only getting around 20 Mbs. It is running Win 2K. Other computers running Win 2K are getting over 45 Mbs. I ran DrTCP on that machine and it did not do anything. Any ideas of why one machine is getting only half the download speeds as another one, on the same network, with the same operating system? |
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DarkLogixPremium
join:2008-10-23
Baytown, TX
kudos:3 | how is it connected (wired/wireless) and how old is it? |
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mclaver
join:2001-04-28
Minneapolis, MN | It is wired and running 100Mb / full duplex ethernet. It is not a distance issue as machines the same distance from the switch get the same speed. There are two Ethernet NICs on the motherboard, one an Nforce4 and one a Marval. They both have the problem. It is a Socket 939 motherboard so it is a couple of years old. |
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1 edit | Nevermind. |
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