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NodeSplit to Toguro
Anon
2013-Dec-3 10:32 am
to Toguro
Re: XBOX ONE/PS4Gamers doing massive downloads, overloading local nodes, need to pay more so that local node splits can be financed. |
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trparky Premium Member join:2000-05-24 Cleveland, OH ·AT&T U-Verse
2 recommendations |
trparky
Premium Member
2013-Dec-3 11:07 am
Oh bullshit, DOCSIS 3.0 was supposed to make it so that node splits were the last and final option. Most DOCSIS 3.0 modems support up to what? 8 bonded channels and with some of the newer ones capable of 16.
All Comcast has to do is turn up some more DOCSIS channels and expand from 8 to maybe 16 channels. Instantly fixed.
DOCSIS 3.0 and the new 3.1 was supposed to fix this crap and make usage caps absolutely unnecessary. This is a money grab, pure and simple.
Oh no! The EXAFLOOD! WHAT EVER WILL WE DO!?!? LMAO |
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said by trparky:All Comcast has to do is turn up some more DOCSIS channels and expand from 8 to maybe 16 channels. Instantly fixed. Not quite. Comcast would also have to upgrade the node to handle the additional channels. Even with channel bonding there are only so many channels to go around. Why should you get 16 channels while I only get 8 channels for the same price? Oh, wait I know, you're special. Bandwidth is a limited resource, laws of physics. Look it up. |
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You don't "get" a channel, you are "assigned" to a channel to LOAD BALANCE. If they add new channels they do so to load balance users.
In fact for slower speeds (15 or less) the TWC tech I know says that they monitor your usage for a month and then bond you to a SINGLE channel, even if you have a DS 3.0 modem. And there are lots of legacy users still on DS 2 modems out there (my rents for example).
As to laws of physics, the coax limit is the Shannon-Hartley limit, and if you look at DS3.1 they begin to add things like FEC and LDPC and they haven't even gotten to turbo codes or which increase the bit limits/freq even more. Current coax runs can go into the Gbits/sec, the question is what your operator wants to spend to get you there, the law of "PROFIT" |
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to trparky
Does Comcast have 3.1 hardware ? Or are they just installing and replacing older 2.0 hardware for 3.0 ? |
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2 recommendations |
to elefante72
said by elefante72:In fact for slower speeds (15 or less) the TWC tech I know says that they monitor your usage for a month and then bond you to a SINGLE channel, even if you have a DS 3.0 modem. That makes no sense at all. What would they accomplish by doing this? It's automatically load balanced across all the DOCSIS channels, regardless of your provisioned speed, forcing the modem to a single channel would defeat this behavior. Additionally, I live in a Time Warner area, and I haven't seen a single DOCSIS 3.0 modem limited to one channel. I'm the geek that hits 192.168.100.1 at all my friend's houses, so I can see their signal levels, and I think I would have noticed this by now. Heck, on Motorola Surfboards you don't even have to hit the status screen, the LEDs change color when channel bonding is in effect.... |
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I am only telling you what he told me, and he was obviously using incorrect terminology. He said that even though it is bonded, they only send traffic UL/DL one channel in each direction which I took it to mean that they assign a Primary DS. It does make sense if they are stacking a bunch of DS2,0 modems to specific channels.
That won't show up on your Moto...
What they do is assign a primary DS channel and enable DCS. I have been out of that space for a few years... Because of overhead, they probably keep DS2.0 modems in the first few channels depending upon node splits, and a big reason why TWC wanted 8 channel modems, because if they were ever to convert to Sec DS they needed 8 channel DS modems. I don't know what Comcast does, but probably similar. Now I hear 16 channel is hitting the street.
With that said this was a year ago, and he was drunk! I'm sure as they move more people to DS 3 modems, they can tune that down because of the overhead and convert more to secondary DS. |
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The "primary" channel is simply the channel that transmits signalling information, which can consume a LOT (upwards of 40% in some environments) of the available capacity. A D3 modem bonded to multiple channels will use all of them for data, simultaneously, as the CMTS attempts to maintain similar traffic ratios across them. It may get more data on channel A than channel B, if B has higher utilization for whatever reason, but it does use them all, per the D3 specs, which are publically available if you're really bored. D2 modems need to be balanced, best practice is to put them in channels that D3 modems use for signaling (i.e., the "primary"), that way you keep traffic-only channels to maximize D3 throughoput. |
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to NodeSplit
The splits can be financed by the profits Comcast already makes. You realize the arm billions every year, right? Their customers already pay them for Internet access. Why the devil should anyone pay them any more? |
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