Beyond DNS...

Thu Jun 4 20:53:17 UTC 1998

At 2:51 PM -0400 6/3/98, Phillip Vandry wrote:
>> 2. Why Web services don't have entries like MX hosts do. Why not be able to
>> set preferences and fall over hosts?

Err, they do. Here's how to set it up:  These balance the load, and if one
machine is down, any browser which handles multiple A records properly will
still fail over to the other machine.

www             IN      CNAME   www1.av8.com.
                IN      CNAME   www2.av8.com.

www1            IN      A       198.3.136.144
                IN      A       208.156.100.250
www2            IN      A       208.156.100.250
                IN      A       198.3.136.144

>That is exactly RFC 2052, but why don't you try convincing everyone to
>deploy that right now? :-)

Because its not necessary. Just put in multiple A records, for multiple
hosts which service the same web pages.

(What? Your browser won't use multiple A records? Well, in that case, it
probably will be a much longer time before it supports a new DNS record
type.)

		--Dean

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           Plain Aviation, Inc                  dean at av8.com
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