On Sat, 25 Feb 2012 07:55:11 -0800, Edward Jaffe wrote:
>
>Wouldn't it be nice if you could specify a pair of server addresses to SMP/E
>such that if one failed it would automatically try the other?
>
Can't something like this be done by the DNS, where one domain
name can resolve to multiple IP addresses:

504 $ nslookup ECCGW01.BOULDER.IBM.COM
Server:         192.168.0.1
Address:        192.168.0.1#53

Non-authoritative answer:
Name:   ECCGW01.BOULDER.IBM.COM
Address: 207.25.252.197


but:

505 $ nslookup www.google.com
Server:         192.168.0.1
Address:        192.168.0.1#53

Non-authoritative answer:
www.google.com  canonical name = www.l.google.com.
Name:   www.l.google.com
Address: 74.125.45.106
Name:   www.l.google.com
Address: 74.125.45.147
Name:   www.l.google.com
Address: 74.125.45.99
Name:   www.l.google.com
Address: 74.125.45.103
Name:   www.l.google.com
Address: 74.125.45.104
Name:   www.l.google.com
Address: 74.125.45.105

I don't know how the client is expected to choose among the
responses, nor what GetHostByName returns.

-- gil

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