Setup SCAN in DNS for Oracle Grid 11gR2

We're trying to figure out how to to setup SCAN in DNS. Any advice is greatly appreciated.
1) Our SCAN name is "ractest-scan". If our domain name is "cts.com", Are these the correct way to put them in DNS?
ractest-scan.cts.com virtual 10.122.72. 200 Fixed DNS
ractest-scan.cts.com virtual 10.122.72. 201 Fixed DNS
ractest-scan.cts.com virtual 10.122.72. 202 Fixed DNS
2) we should be able to "nslookup ractest-scan.cts.com" although we can't ping the name. Is this right?
Thanks a million.
Sam -

Hello Buddy,
Yes, you're right about it. When you setup RAC 11gr2 you will be able to ping the name too, and it will resolved by DNS randomically and back to you one of each Ip addresses that you setup on your DNS.
On your dns register also the VIP addresses and at client tnsnames.ora, put only the SCAN NAME, it will works fine, this is a great feature used by plug or unplug servers of RAC cluster!!!
Remember, don't put any scan addresses on /etc/hosts, it is not recommeded by Oracle.
Best Regards,
Rodrigo Mufalani
www.mufalani.com.br

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