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Originally Posted by lotusmike
If NS is already assigned through DNic and we are not planning to change NS for several months, does it matter? If DNic name servers went down, would the last good known NS' still stick?
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The problem you have is :
If Dnic goes down, the info in the root servers ( and other main ISP cache servers ) is to look the DNS at Directnic... DNic cannot follow thru with the request, in others words cannot tell the surfer that the site is located at 111.222.333 ; so you are fucked, sorry.
On the other hand, if you add/change NS , the root servers ( and others ) will update to know that the NS are NS.somewhereewlse.com . They will look up ns.som... and see that it resolves to 111.222.333 . So everything works.
You have nothing to loose to do as suggested. You do not even have to delete the Dnic NS info.
For my clients, they all have from 4 to 6 different nameservers, so if ever ( and it happened ) the name server is down, the others take over.
This has to be done asap, so that the update gets doene as soon as possible. When and if Dnic is off the net, there is nothing more to do.