I was looking around to see if others have figured out if earthlink was 
using sandvine's, and found this:

https://secure.dslreports.com/forum/r25660160-General-Sudden-Degradation-of-Services

"You described earlier the symptoms of a DSLAM or Shelf card that is 
throwing errors or possibly just going/gone bad. Ask support (Level 3 
aka TRON) to check the DSL card that you are on for any issues and 
possibly remove your provisioning and rebuild the circuit on another pin 
on the card or another card. You have to keep on top of the TRON Team 
(Level 3 Support) as they are the only ones that can get a truck rolled 
to your location."

It's either flaky hardware (your modem or their wiring/dslams), or qos 
tail-dropping your "undesirable" traffic.  Talk to this mythical "tron" 
entity.  I don't use dsl so I don't know it's quirky mannerisms when it 
unravels.

-mb


On 02/23/2013 06:31 PM, Derek Trotter wrote:
> The more I think about it, the more I think you're right.  I did some
> usenet harvesting using encrypted connections and had no problem.  If
> only I could call earthlink and get in touch with someone in this
> country.  I'm guessing they don't tell their overseas tech support very
> much.
>
> On 02/23/2013 05:28 PM, Jason Spatafore wrote:
>> This is a classic example of QoS usage.
>>
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