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Is there a Comcast guy who can explain this rather large discrepency?

post #1 of 57
Thread Starter 
So, I have DDWRT on my router, and it gives me a monthly log of how much data has been through my wan port. It is significantly different than what comcast says I'm using, so I want to know how are these 2 calculating usage?

According to the 2 screenshots I've attached, Comcast says I've used 292 GB, but DDWRT says just shy of 255 GB. That's nearly 40 GB difference!!!! I'm just trying to figure out which is correct. Comcast hasn't contacted me or anything that I'm over using, but if they get it in their minds to I'd like to be prepared to defend myself.

post #2 of 57
They're probably counting GB the same way hard drive marketing people do.
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post #3 of 57
Wow a 250GB cap....wish my cap was that high... =/ Actually I with it was illegal to cap in the first place....

Oh and BTW I noticed the same thing with my data usage. IDK how they calculate it.
post #4 of 57
I assume you've considered the obvious. Your WAP is secured?
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post #5 of 57
Thread Starter 
Quote:
Originally Posted by error10 View Post
They're probably counting GB the same way hard drive marketing people do.
Did that math, still not even close........
post #6 of 57
Thread Starter 
Quote:
Originally Posted by Plex View Post
I assume you've considered the obvious. Your WAP is secured?
Yes. And I have a log of every DHCP client which is really only my wifes HTC. All of my devices have static IPs otherwise due to port forwards.
post #7 of 57
Quote:
Originally Posted by herkalurk View Post
Yes. And I have a log of every DHCP client which is really only my wifes HTC. All of my devices have static IPs otherwise due to port forwards.
Very good. Then I also assume you've made doubly sure that you're looking at the exact same time frame that Comcast is using to measure your usage?
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post #8 of 57
Thread Starter 
Quote:
Originally Posted by Plex View Post
Very good. Then I also assume you've made doubly sure that you're looking at the exact same time frame that Comcast is using to measure your usage?
I'm just reading the month data usage. Comcast only gives me a month at a time, so what else is there to read? If you looked at my screenshots that's the best I get from comcast, and I'd rather not just tell them, "hey i'm using more than I'm supposed to" when trying to figure out who's correct. Honestly they've been consistently off compared to DDWRT and I'm just trying to figure out where the difference is coming from.
post #9 of 57
Quote:
Originally Posted by herkalurk View Post
I'm just reading the month data usage. Comcast only gives me a month at a time, so what else is there to read? If you looked at my screenshots that's the best I get from comcast, and I'd rather not just tell them, "hey i'm using more than I'm supposed to" when trying to figure out who's correct. Honestly they've been consistently off compared to DDWRT and I'm just trying to figure out where the difference is coming from.
What I'm saying is, DD-WRT might be coming back with usage statistics that begin with the first of the month, or the first day of a billing cycle, etc. Comcast might be measuring a slightly different time frame. Something like that could easily add a couple of days onto their statistic that you're not accounting for. Just a thought.
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post #10 of 57
Thread Starter 
Quote:
Originally Posted by Plex View Post
What I'm saying is, DD-WRT might be coming back with usage statistics that begin with the first of the month, or the first day of a billing cycle, etc. Comcast might be measuring a slightly different time frame. Something like that could easily add a couple of days onto their statistic that you're not accounting for. Just a thought.
That's true, just wish I had a personal comcast rep who actually knew how the data reporting was configured. I personally think if they're reporting on your billing period, and not on the calendar month, it's a bit weird.

I had a comcast tech out to my apartment a couple weeks ago, and he had no idea of how that is calculated, said it was way above his pay grade.
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