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espaeth
Digital Plumber
Premium,MVM
join:2001-04-21
Minneapolis, MN
kudos:2
Reviews:
·Vitelity VOIP

1 recommendation

reply to joetaxpayer

Re: [Caps] Caps vs. Metered Billing

Throttle implies that bandwidth has a hard limit regardless of how much capacity is available, and that's almost certainly not what's implemented here.

It would be very easy to map the Comcast-sourced video traffic into a different DOCSIS traffic class at the CMTS based on source IP address, very similar to how they map CDV to a higher service class to ensure the quality of that traffic on a shared channel. This isn't really "throttling" because in a non-congested state you don't queue traffic, so you have no need to prioritize traffic within the queue.



joetaxpayer
I'M Here Till Thursday

join:2001-09-07
Sudbury, MA

said by espaeth:

Throttle implies that bandwidth has a hard limit regardless of how much capacity is available, and that's almost certainly not what's implemented here.

Throttle implies the speed you'd get if everyone started downloading at once on a given node and put the system over capacity. If you want it to mean something else, we should avoid the word, because each person doesn't read it the same. I know - torrents were getting throttled even when system wasn't hitting limits, so nevermind, I agree with you....


EG
The wings of love
Premium
join:2006-11-18
Union, NJ
kudos:9

1 recommendation

IMO, to "throttle" implies that something *deliberate* is being done and not *the nature of the beast*.



joetaxpayer
I'M Here Till Thursday

join:2001-09-07
Sudbury, MA

said by EG:

IMO, to "throttle" implies that something *deliberate* is being done and not *the nature of the beast*.

Ok. So we agree the word is ambiguous. Right? Since it's used that way, I can't argue with you. I hope we also agree there's only so much capacity at any moment, and that number is probably much lower than the promised rate times the number of customers.

And there may come a day when the ISP says "we guarantee X Mb/s, but at 3am you might just see 100Mb/s" instead of limiting speeds to service levels.

bandit8623

join:2004-09-08
Minneapolis, MN
reply to joetaxpayer

i read that and it doesnt have anything to do with over congested lines. Comcast DOESNT throttle. if the lines are somehow over congested and your speed slows down, thats not called throttling.

now if comcast actually throttled before the congestion was too happen then yes i agree with you.

throttling is an act to stop congestion from happening. over congestion is the effect of not enough bandwidth



joetaxpayer
I'M Here Till Thursday

join:2001-09-07
Sudbury, MA

said by bandit8623:

i read that and it doesn't have anything to do with over congested lines. Comcast DOESN'T throttle.

From the wiki link - "Bandwidth throttling is a reactive measure employed in communication networks in an apparent attempt to regulate network traffic and minimize bandwidth congestion."

They don't?


EG
The wings of love
Premium
join:2006-11-18
Union, NJ
kudos:9

said by joetaxpayer:

They don't?

They do;

»customer.comcast.com/help-and-su···rmation/

bandit8623

join:2004-09-08
Minneapolis, MN
reply to joetaxpayer

quoting wiki again - On a broader level, the Internet Service Provider may use bandwidth throttling to help reduce a user's usage of bandwidth that is supplied to the local network. This can be used to actively limit a user's upload and download rates on programs such as video streaming

no they dont. they may use some sort of prioritizing on their main switches, but i havent ever seen my speed reduced.

i would suppose it depends on the area you are in too. ive never seen throttling in my area.

do you guys remember the whole throttling fcc situation a few years back? they stopped that practice. so maybe they are more sneeky about ? maybe



telcodad

join:2011-09-16
Lincroft, NJ
kudos:6
reply to EG

said by EG:

said by joetaxpayer:

They don't?

They do;

»customer.comcast.com/help-and-su···rmation/

"Comcasts current congestion management technique

If a certain area of the network nears a state of congestion, our congestion management technique will ensure that all customers have a fair share of network access. This technique will identify which customer accounts are using the greatest amounts of bandwidth, and their Internet traffic will be temporarily managed until the congestion period passes. Customers will still be able to do anything they want online, but they could experience longer times to download or upload files or slower web surfing."

Yes, I guess that does sound like throttling.

bandit8623

join:2004-09-08
Minneapolis, MN

Targets of congestion management-

Our current technique is "protocol-agnostic," which means the system does not manage congestion based on the application(s) being used. It is also content neutral, and does not depend on the type of content that is generating traffic congestion. Put simply: Congestion-managed traffic is not based on specific applications or content, but on current network conditions and recent amounts of data transferred by users.



joetaxpayer
I'M Here Till Thursday

join:2001-09-07
Sudbury, MA

I've seen sluggish downloads. But, they only seem to happen at 4-8PM, which makes sense.

The throttling can be content agnostic, or it can prioritize Comcast VOD service, which I imagine it should. I know there was a suit that they lost on throttling torrents. I've never seen huge torrent speeds anyway, so I don't know what's up.



EG
The wings of love
Premium
join:2006-11-18
Union, NJ
kudos:9

FWIW, after that fiasco, it would be quite foolish of them to go back to interfering with the P2P protocol by injecting rogue TCP RST packets again.