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MacLeech
The one and only
Premium,MVM
join:2001-07-14
SoCal
edit:
March 11th, @07:03PM
| reply to funchords
Re: [TWC] Throttling in Milwaukee?
said by funchords  :Your modem is rebooting. That nearly eliminates purposeful ISP throttling as a cause as many DOCSIS modems cannot be rebooted from the headend. This is why most ISPs tell you to reboot your router when a network upgrade happens so that it can phone home and download and apply its new config file. The cable company can ALWAYS reboot your modem remotely, either through SNMP command to the modem, CMTS command, or physically turning off the signal to/from the modems forcing a reboot to reaquire the signal.
Why the ISP doesn't use it is often because they want to roll out an upgrade slowly over the course of days or weeks. Usually to ease into the change so resources aren't suddenly slammed with demand from one thing or another (i.e. hundreds or thousands of modems all trying to aquire IPs or use 3 extra mbit of bandwidth each or customers calling when something fails).
ISPs don't use modem resets to purposely throttle connections though, it's not exactly resource friendly. It'd be akin to controlling your kids TV watching by flipping the TV on and off while they're watching it, what's the point when there are much easier and less disruptive ways. | |
funchords
Robb
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join:2001-03-11
Hillsboro, OR
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| said by MacLeech :The cable company can ALWAYS reboot your modem remotely, either through SNMP command to the modem, CMTS command, or physically turning off the signal to/from the modems forcing a reboot to reaquire the signal. Right. But only the last one is sure to work, and the last one affects everyone on that frequency -- so it wouldn't be a good way to perform throttling.
If challenged, I couldn't tell you which modems respond to an SNMP command to restart or if there are different "deepnesses" of restart. And I don't know if you can reboot a modem from the CMTS outside of SNMP or interrupting the signal to a whole group. However, none of that applies to this guy's problem.
Good metaphor about the TV & kids.  I found that Nyquil worked wonders. 
PS: to answer your next question -- both.
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Robb Topolski -= funchords.com =- Hillsboro, Oregon
"We don't throttle any traffic," -Charlie Douglas, Comcast spokesman, on this report. | |
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