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Posted by Jbob on April 12, 2005, 8:56 pm
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Yep just switch your DNS servers(away from Comcast ones) and you'll be
cruising again.
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Posted by Rick Merrill on April 12, 2005, 10:04 pm
Jbob wrote:
> Yep just switch your DNS servers(away from Comcast ones) and you'll be
> cruising again.
>
>
Aren't they supposed to tell DHCP to switch users to different DNS
servers? (i.e. reboot your DHCP client to get new DNS)
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Posted by Warren on April 12, 2005, 7:46 pm
Rick Merrill wrote:
> Jbob wrote:
>> Yep just switch your DNS servers(away from Comcast ones) and you'll be
>> cruising again.
>
> Aren't they supposed to tell DHCP to switch users to different DNS
> servers? (i.e. reboot your DHCP client to get new DNS)
They could do that. Assuming that they have other servers to assign. They'd
also have to remember to set the lease time short enough so that when the
problem goes away, everyone is switched back fast enough.
Also, for people using routers, they'd have to reset the router, and reboot
their computer. Rebooting their computers would just get the same DNS
servers being given out by the router. And while just resetting would change
the DNS information in the router, it would still need to be served to
computer, which would either need to be rebooted, or release/renew the
lease.
But again, that all depends upon having backup servers available. It would
be my guess that if more than one DNS server goes down at the same time, the
problem is more likely to be a problem with communications to/from the data
center where the DNS servers are located. So they not only would need to
have back-up servers available, they'd need to be located at another data
center.
Also, you need a global way of changing the information to all the accounts,
and that information would need to be pushed-out to the regional data
centers where the DNS servers are located. And if there's a problem with the
central data center, well, making that happen would be a problem as well.
So while you're theoretically correct, the practical application of that
solution is far more difficult than it sounds. And implementing a
work-around usually takes resources away from fixing the actual problem as
well.
--
Warren H.
==========
Disclaimer: My views reflect those of myself, and not my
employer, my friends, nor (as she often tells me) my wife.
Any resemblance to the views of anybody living or dead is
coincidental. No animals were hurt in the writing of this
response -- unless you count my dog who desperately wants
to go outside now.
Care for your landscape with Black and Decker cordless tools
http://www.holzemville.com/mall/blackanddecker/index.html
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Posted by Jbob on April 12, 2005, 10:08 pm
And to top all that off if the DNS servers are down how are the users gonna
get email to know to change them manually. lol
This specific issue was discussed adnauseum over on DSLReports last week and
going on again tonight..
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Posted by $Bill on April 12, 2005, 9:47 pm
Jbob wrote:
> And to top all that off if the DNS servers are down how are the users gonna
> get email to know to change them manually. lol
> This specific issue was discussed adnauseum over on DSLReports last week and
> going on again tonight..
I get enough email so that if I don't get any for a while or I can't surf
to sites failing a name lookup, I first make sure the DNS server is down
and then I just go into the router and switch from automatic to fixed DNS
and hit Apply. No rebooting or anything - I'm right back up using somebody
else's servers.
Being a programmer, I could also create a background task to do a name
lookup periodically and open a popup when it fails - but haven't had
that big a need yet.
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