dns 1 & 2

name servers ?

[zechariah]

I hope for some enlightentment on this question about why should there be DNS 1 & 2 always for registration of a new domain ? I can't find it from the net - maybe not hard enough - is the 2nd one for backup? pls enlight me thanks

[rpking]

Yep, spot on. The second is for redundacy. Some DNS hosts provide 4 different addresses. There should really be at least one remote server, in case of massive failure.

[zechariah]

thanks - i'm floating now - thanks :)

[Brett_Tabke]

[foo.barngrill.com...]

DNS resolve:
- first your os asks the ip name server for the full name.
- the isp name server, looks up .com
- goes to the .com root server it has been assigned.
- asks the .com root server for "barngrill.com"
- next it goes to the name server listed for "barngrill.com" and requests "foo.barngrill.com"
- if the name server at the host is dead, it goes to the name server listed second the "whois"...

DNS server failures happen just like web server failures happen. It's nice to have that backup.

[zechariah]

thank you very much brett,nice to have a clearer understanding of this situation-now i have full understanding- thanks again.