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I have implemented this at my site on a two node RAC.
We did test the same by bringing the newly added interfaces down and the failover did happen as expected.
I personally think that OS bonding will be better considering the number of bugs we run into as when the complexity and involvement of Oracle features increases.
Not saying that Oracle is unreliable, but just a personal opinion.
There is already a situation, you may face, wherein after the failover (and failback following the failover) the IPs returned are not correct due to ARP caching if the IPs fall under same network.
This can be avoided by using proven OS bonding (not that I'm aware of any issues with OS bonding :) ).
Thanks jjk user's response. Sorry for delayed repsponse ( I got problem login to this site).
Do you have to configure multicast for the interconnect network interface in order to use HAIP?
Edited by: 925838 on Apr 5, 2012 2:03 PM