Bandwidth Dropping After about an Hour

September 1, 2010 at 11:40:44
Specs: Windows 7, 2gb
I am trying to narrow down an issue we are having here at my office. Our bandwidth seems to drop off after about an hour of resetting our Comcast business modem. right after i reset it i run a speed test and we are getting like 25MB down and like 3.5MB up which is normal cause that is what we pay for. But after about an hour the speeds drop to about .9MB down and .2MB up. Is there an easy way of figuring out if a computer on the network is having an issue or if a switch or router is going bad the router here is about 5 months old so i doubt it is that. But our 2 24 port netgear switchs are close to 2 years old. what would you guys suggest?

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September 1, 2010 at 11:48:24
after 1 hr connect only one computer to the router and do a speed test. Same as in the first minutes you have a bandwidth hog on your lan. If less replace the modem [comcast will supply a new one though you may need to pick it up. Make sure they "provision" for it [register the new modem in their system]

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September 1, 2010 at 11:53:06
As much as i would love to blame comcast on this one i dont think it is them... If after the office bandwidth drops to nothing if i plug my laptop direct into the comcast modem with out a reset it works just fine i feel that is down through the pipeline... i dont want to go replacing things to help figure this out. is there a way to see if a computer is having an issue and sending to many requests or if a switch is dying all the lights seem to be correct.


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September 1, 2010 at 12:26:14
You bypassing the router and going straight to the modem does not make for a valid test. You need a single pc going thru the switch/router/modem for a proper test of pcs vs equipment comparision.

If you have a jabbering nic the switch light would be constantly blinking more than the rest.

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