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My Feb data usage hit 292GB Comcast 's cap is 300GB The Comcast agent said if I upgraded t...


G+_William Burlingame
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My Feb. data usage hit 292GB.  Comcast's cap is 300GB.  The Comcast agent said if I upgraded to the next level, it would bump the cap to 350GB.  I checked the Comcast site and it said I still had the 300GB cap, but my download speed is naow 50Mbps.  It seems that option is only available in select markets and mine is not one of them.  Is there a way to monitor the usage to see what the main culprit is?  I have had a Netflix account for nearly 5 years , but I haven't come near the limit before last month.  I do hove a college student living with us.  I'd like to see what's going on before I make any accusations.  How can I monitor the internet traffic?

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Assuming your Netflix usage has roughly stayed the same month-to-month, then something has changed and Netflix isn't the root cause of your bandwidth spike. Video and audio streaming services use compression technologies so that they use less bandwidth.

 

Someone is likely downloading some large files. Or, a computer on your network has been compromised and is part of a botnet. Or both.

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Yes, please see answer below but I can add that SNMP breaks down usage to router interface. On my AirPort Extreme:

number of interfaces reported by the router: 8

interface #1 name is: mgi0

interface #2 name is: mgi1

interface #3 name is: mv0

interface #4 name is: mv1

interface #5 name is: lo0

interface #6 name is: wlan0

interface #7 name is: wlan1

interface #8 name is: bridge0

WiFi is the mgi's as I recall.

So you can catch the culprit if they are the primary user on one interface.

Totals/rates are reported. SNMP is pretty cool. I'm not sure if you can get the MAC address. Probably can.

 

My GizWiz video: http://youtu.be/2I0m0Qd-GFU

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I had the same problem with my cable company. They told me that I blew my data cap, but I was monitoring my data usage with vnstat on my pfsense router. And the totals didn't add up. Eventually they threatened to cut my internet unless I upgraded my internet speed. Upgraded, got a new modem for the faster speeds, and now I am streaming like crazy, and barley breaching my old data cap. The problem seemed to be that my old modem was disconnecting and reconnecting. This caused a bug in there system to over estimate the data usage. 

 

So basically, is your modem reconnecting a lot?

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Rob German I use Open DNS to block torrent, porn, etc. sites. The "kid" (age 22) is a grandson who had his own laptop when we decided to let him move in.  He's here for an "attitude adjustment" .  He's not using my Netflix account, but an account of a classmate.  With all the other problems to be solved, overtly monitoring his computer usage is problematic at this time.  Yes, if you extrapolate, I'm older than dirt.

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  • 2 weeks later...

Thanks for the Sky Dog(e) recommendation on Know How.  I'll certainly consider getting one if I have any more problems with my data usage. So far this month it seems back on track.  I did have a talk with the college student (my 22 year old grandson).  I explained the problem and the possible outcomes.  I warned him about Netflix binging.  I don't think his sorry laptop is capable of serious gaming.  It looks like my D-Link DIR-655 router has some limited filtering capability to restrict his usage, but not as powerful as Sky Dog.  Either solution would require me to dig into the situation more extensively than I'd like to, but nice to see I have options that doesn't restrict my own usage.  BTW, his laptop uses a WiFi connection.  I'll also checkout WireShark.

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