2 different nameserver addresses.

/dev/rob0 rob0 at gmx.co.uk
Mon Jun 13 18:26:56 UTC 2005

On Monday 13 June 2005 11:08, robburne at hotmail.com wrote:
> I am hosting a website on my own server. I'd like to provide an
> alternative namserver address in case my server goes down.

What does this have to do with Web servers?

> Is it possible to supply two different nameservers in the domain name
> configuration, so that if one goes down the 2nd nameserver is used
> ie.

To what "domain name configuration" are you referring? The domain 
registrar? If so of course, redundancy is always good.

> ns1.myserver.com
> ns2.anotherserver.com
> Does this work in practise, if not what will happen.

One of those two (or a third "stealth" nameserver) will be the master 
for the zone. The other (or both, if there's a stealth master) will 
receive "notifies" from the master when the zone is changed. It then 
comes and initiates an IXFR.

Servers with good connectivity can accomplish this in under 1 second; 
both will be serving the same data for the zone. Of course old queries 
will still be cached until the TTL expires.
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