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We have a Comcast 50/10 line into our office. We keep seeing very short but sometimes frequent drops in our internet service. It's enough to kick you off of skype and stop any websites from loading, which is obviously affecting our productivity.
- We've tried 4 different routers, we've tried moving everyone off of wireless and onto wired via a switch and so far nothing has helped. Right now we're on a Cisco SB WRP400-G1 router. Attached to the router is a 16 port switch going to the ports in all of the offices.
- We've moved to OpenDNS in the case that it was the comcast DNS servers going down.
- Today we tried putting the modem, router, and switch on a UPS to make sure it wasn't power fluctuations that was causing it.
Every time we call Comcast, by the time they are here the internet is working fine.
I'd like to somehow prove that the problem is with Comcast, so if that means plugging in a machine directly into their router and collecting data all day, I'm up for that. I just want to hear ideas on what tools to run and how to collect this data.
I could just continuously ping google.com all day long but I'm not sure how valuable that data would be.
Thoughts?
2run a tracert to 4.2.2.2 or some well known public dns server and show them it is hitting your router then not making it out. As long is it is making it to the router during these outages chances are that it is not a problem with your internal LAN. – Supercereal – 2011-02-24T18:59:43.147
The problem is that the problem is more than likely not inside your building. :/ @Kyle's suggestion is about the only sort of thing you can do. – Shinrai – 2011-02-24T19:22:29.923
Traceroutes or pings out to or across any network that the ISP does not control will just be ignored by the ISP. They will only accept documentation that proves anything only on their network. Always choos DNS or another server on their network when running pings or traceroutes for tests. – MaQleod – 2011-02-25T00:04:43.670
Ben, I have the same issue with ComCast at home. I have the triple play and have TV and Phone also included. I also get frequent drops and the phone doesn't work in addition to internet. The TV is unaffected during these times. I was able to log into the ComCast provided cable modem and see it's internal log saying that it cannot reach their services. I'm not sure what your setup is but may be something to check. – edeevans – 2011-02-24T21:20:23.640
They changed the modem password, so none of the known defaults work (SMC). How did you get into yours? I suspect this business class modem is different than your home one though. – Ben Scheirman – 2011-02-24T21:59:44.747