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DOCSIS 3.0 4 channel bonding vs 8

post #1 of 8
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Just wondering if anyone is well versed on this subject. I am looking at this DOCSIS 3.0 modem to replace an old DOCSIS 2.0 motorola surfboard. I checked out the specs and it's only 4 bonded channels. I see that there is a motorola and a zoom modem that does 8 channel bonding. Obviously this is double the amount of the Zyxel modem but will I really even notice? Does Comcast even do 8 channels yet? BTW I only pay for the 30 down 6 up speed tier. Technically I'm not even saturating the DOCSIS 2.0 modem but I hear comcast is pushing everyone to 3.0 and on top of that there is a level of redundancy if channels ever get bogged down.

Thanks in advance!
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post #2 of 8
It's pretty much a capacity argument at this point. 4 channels will top out ~150 mbps, while 8 channels can carry double that up to ~300 mbps.

If the price is negligible between the units it may be worth going with the more capable device versus buying another one.
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post #3 of 8
http://www.newegg.com/Product/ProductList.aspx?Submit=ENE&DEPA=0&Order=BESTMATCH&Description=Motorola+sb6141&N=-1&isNodeId=1

That's the Motorola Surfboard SB6141 and that uses that.
Really when you think about it the channels are shared so it's a bandwidth of ~ 38 mbps shared by how many other people are on the channel. That's the way Cable works. You see this during peak times on people with one channel as you may see congestion. Not really meant for redundancy but for load balancing.

So this will keep you going for now, but they are already looking for technologies being implemented in some locations right now.

http://www.hitron-americas.com/2013/rogers-unleashes-1-gig-wireless-gateway/
This one is using: 24 downstream channels and 8 upstream channels.
Edited by linkinparkfan007 - 4/6/14 at 9:01am
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post #4 of 8
Thread Starter 
I did end up buying it for only 39.99$ shipped! Comcast had it programmed in a matter of minutes. Unfortunately my speeds are identical to that of my DOCSIS 2 surfboard. But at least I'm ready now for when Comcast makes all 2.0 devices incompatible.



4 channel bonding goes up to 160mbit and I don't see myself needing that for a very long time. Heck, I survived 1 down/500k up verizon dsl for 5 years.
Edited by Jayjr1105 - 4/6/14 at 9:30am
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post #5 of 8
Sadly your download and upload speeds were not capped by the hardware, but rather by the modem config file set by Comcast. While I would love to see Comcast pushing for 1 gig download speeds, I simply don't see it happening in the near future. Comcast seems to be a company that will push the price of whatever the market will bare, so in order for more affordable high speeds to be available, their competitors must also push the limits. Both Comcast and Quest (Century Link), seem to cap out at ~150 mbps download and that speed isn't available in many areas. I would expect to see them expanding territory before pushing for major upgrades.

I don't think U.S. ISP's will provide speeds higher than 4 bonded channels can handle for the next 5 years, and even then it likely won't be out in all areas. In the computer industry, 5 years is an eternity, so I think your safe with whatever you purchase.
post #6 of 8
Quote:
Originally Posted by 1Kaz View Post

Sadly your download and upload speeds were not capped by the hardware, but rather by the modem config file set by Comcast. While I would love to see Comcast pushing for 1 gig download speeds, I simply don't see it happening in the near future. Comcast seems to be a company that will push the price of whatever the market will bare, so in order for more affordable high speeds to be available, their competitors must also push the limits. Both Comcast and Quest (Century Link), seem to cap out at ~150 mbps download and that speed isn't available in many areas. I would expect to see them expanding territory before pushing for major upgrades.

I don't think U.S. ISP's will provide speeds higher than 4 bonded channels can handle for the next 5 years, and even then it likely won't be out in all areas. In the computer industry, 5 years is an eternity, so I think your safe with whatever you purchase.

Comcast's new 150/20 tier (replacing the 105/20 tier) effectively maxes out a 4 channel downstream modem.
    
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post #7 of 8
Quote:
Originally Posted by Oedipus View Post

Comcast's new 150/20 tier (replacing the 105/20 tier) effectively maxes out a 4 channel downstream modem.

New is a relative term, that speed has been out for 3 years in some areas. That's why I said I would expect them to work on expanding their high speed network before trying to increase bandwidth.
post #8 of 8
Thread Starter 
Comcast just bumped everyone on Blast internet and above. So people with 50/10 went to 100/20 and 100/20 people went to 150/?. Unfortunately they didn't give a free bump to performance or performance plus subscribers.
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