Strange Comcast Outage

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Shawn
Posts: 92
Joined: Fri Mar 05, 2010 7:59 am

Strange Comcast Outage

Post by Shawn » Mon Dec 06, 2010 4:02 am

I don't experience many outages from Comcast. Usually, I use the Telo flashing red as my indicator for whether the internet service is up or down. Last night I was having problem with my laptop (using wifi) connecting to the internet. A quick glance at the Telo and there were no flashing red. The AT&T Microcell was functioning normally with steady green lights. So I went to the computer that was connected to the router directly and it was no go also. I made an Ooma call, and there were no problem. I went through rebooting the modem, router, Telo, computers and result was the same. I called the Comcast 877 number and there were no service. Called the Comcast 800 number, the recording said they are experiencing severe problems and call back later. At that point, I just left everything alone and went on to other business. About 2 hours l later, I heard the email signal from my iTouch. I checked the computer and everything was working again. I guess there is a kind of internet outage that one cannot get to the web but the voip equipments (Ooma and Microcell) still can function.

amarryat
Posts: 48
Joined: Tue Oct 13, 2009 5:04 am

Re: Strange Comcast Outage

Post by amarryat » Mon Dec 06, 2010 4:29 am

DNS servers could be down, and therefore you would not be able to find websites, making it appear as though your internet service is down. However the Ooma is configured with the IP address of the Ooma servers and therefore doesn't need to use DNS servers to find their address.

Shawn
Posts: 92
Joined: Fri Mar 05, 2010 7:59 am

Re: Strange Comcast Outage

Post by Shawn » Mon Dec 06, 2010 5:30 am

You are absolutely right about the DNS outage of Comcast last night. I just read about it on the news and it affected a large area in the Midwest. The suggested fix is to use an alternate DNS other than the one provided by the ISP.

WayneDsr
Posts: 3790
Joined: Wed Feb 04, 2009 6:28 pm
Location: Northern Indiana

Re: Strange Comcast Outage

Post by WayneDsr » Mon Dec 06, 2010 6:19 am

Shawn wrote:You are absolutely right about the DNS outage of Comcast last night. I just read about it on the news and it affected a large area in the Midwest. The suggested fix is to use an alternate DNS other than the one provided by the ISP.
My neighbor is experiencing this as well. I put an alternate dns in their pc and it worked fine.

Wayne
ooma customer since January 2009
ooma hardware: core (hub/scout) and Telo
Lifetime Premier Member

tommies
Posts: 862
Joined: Sun Mar 01, 2009 8:10 pm
Location: Atlanta

Re: Strange Comcast Outage

Post by tommies » Mon Dec 06, 2010 9:24 am

Me too with Comcast. I don't know about the Comcast DNS outage till reading it in the news. I use another (Comodo firewall DNS) as the primary and Comcast DNS as 2nd DNS.

It's recommended to use two different DNS servers from different sources(one can be from the isp, and the other can be openDNS or some others.) You need to manually put it in your router setting.
tommies

scoutconnor
Posts: 424
Joined: Fri Dec 05, 2008 12:57 pm
Location: Upstate NY

Re: Strange Comcast Outage

Post by scoutconnor » Mon Dec 06, 2010 9:51 am

If something like this happens, try to plug an alternate DNS server into your computer. I always use OpenDNS but GoogleDNS is also good.
OpenDNS Servers:
208.67.222.222
208.67.220.220

GoogleDNS Servers:
8.8.8.8
8.8.4.4

tommies
Posts: 862
Joined: Sun Mar 01, 2009 8:10 pm
Location: Atlanta

Re: Strange Comcast Outage

Post by tommies » Mon Dec 06, 2010 10:50 am

scoutconnor wrote:If something like this happens, try to plug an alternate DNS server into your computer. I always use OpenDNS but GoogleDNS is also good.
OpenDNS Servers:
208.67.222.222
208.67.220.220

GoogleDNS Servers:
8.8.8.8
8.8.4.4
Excellent. You need to print it or note it down on a piece of paper. When DNS servers down, there is no way to look it up.
Comodo firewall DNS
156.154.71.22
156.154.70.22
tommies

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EricJRW
Posts: 254
Joined: Tue Nov 23, 2010 2:00 pm
Location: Texas

Re: Strange Comcast Outage

Post by EricJRW » Mon Dec 06, 2010 11:22 am

scoutconnor wrote:If something like this happens, try to plug an alternate DNS server into your computer. I always use OpenDNS but GoogleDNS is also good.
OpenDNS Servers:
208.67.222.222
208.67.220.220

GoogleDNS Servers:
8.8.8.8
8.8.4.4
I wonder how much it cost for Google to snag that IP (it's very lucky and easy to remember)?
ooma hub with one scout (looking to add at least one more)
Premier Service (I was not expecting to do this, but I love the Premier features)
Panasonic KX-TG4024 (w/ 4 handsets)
Customer since November 2010
Internet access: FiOS 15/5

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