Comcast details new traffic management
#1
Posted 23 September 2008 - 07:54 PM
(snip)When any port (think neighborhood node) on the Cable Modem Termination System (CMTS) in the local cable company office enters a "near congestion" state, the system looks up the heaviest users of bandwidth during the preceding few minutes. Those users then have their traffic tagged as "Best Effort" rather than the default "Priority Best Effort." At this point, nothing happens to anyone's traffic.
When congestion actually occurs, the Priority Best Effort users should see no slowdown in their connections; all traffic will go through ahead of the Best Effort traffic. Best Effort folks may not notice any slowdown, either. They are not speed-limited, but they do go to the back of the quality of service (QoS) line. At this point, if traffic does in fact fill the pipe, users in the Best Effort category will experience delays in their connections, though their traffic will still be sent on whenever possible. (snip)
Sounds like they're coming around a bit by not deep-packet sniffing anymore. Still not sure if they should be trusted though.
#2
Posted 23 September 2008 - 07:58 PM
#3
Posted 23 September 2008 - 08:28 PM
#4
Posted 23 September 2008 - 08:45 PM
all we can do is atm...
#5
Posted 24 September 2008 - 04:02 AM
Yeah yeah...I can dream can't I?
#6
Posted 25 September 2008 - 09:03 PM
banj0, on Sep 23 2008, 02:54 PM, said:
(snip)When any port (think neighborhood node) on the Cable Modem Termination System (CMTS) in the local cable company office enters a "near congestion" state, the system looks up the heaviest users of bandwidth during the preceding few minutes. Those users then have their traffic tagged as "Best Effort" rather than the default "Priority Best Effort." At this point, nothing happens to anyone's traffic.
When congestion actually occurs, the Priority Best Effort users should see no slowdown in their connections; all traffic will go through ahead of the Best Effort traffic. Best Effort folks may not notice any slowdown, either. They are not speed-limited, but they do go to the back of the quality of service (QoS) line. At this point, if traffic does in fact fill the pipe, users in the Best Effort category will experience delays in their connections, though their traffic will still be sent on whenever possible. (snip)
Sounds like they're coming around a bit by not deep-packet sniffing anymore. Still not sure if they should be trusted though.
#7
Posted 26 September 2008 - 12:41 AM
Camaro, on Sep 25 2008, 02:03 PM, said:
#8
Posted 26 September 2008 - 04:30 AM
Here's a test with OpenDNS:
and without:
Edited by banj0, 26 September 2008 - 04:30 AM.
#9
Posted 26 September 2008 - 03:33 PM
#10
Posted 26 September 2008 - 09:04 PM
#11
Posted 26 September 2008 - 10:03 PM
#12
Posted 26 September 2008 - 10:27 PM
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