Providing 24x7 service?

[Barry Margolin]

In article <890B12B8398AD211BC6100805FA784A205383858 at es04snlnt.sandia.gov>,
Cinense, Mark <macinen at sandia.gov> wrote:
>	Would anyone know how to provide 24x7 DNS service?  I mean how does
>the root servers do this?  If they go down for service does that root server
>have a backup?

There are 13 root servers.  If the one that your local server happens to be
using goes down, it will time out and switch to another one.

The same thing goes for DNS servers for individual domains.  You're
supposed to have multiple servers for your domain, so if one is down the
other will be used.

-- 
Barry Margolin, barmar at genuity.net
Genuity, Burlington, MA
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