How to setup Redundant Interconnects ?

Question

I am planning to install 11.2.0.3 Grid Infrastructure on a Solaris platform , We used to do IPMP before for High availability interconnect.
since 11.2.0.2 Oracle seems to address it this by itself but I am having a hard time finding documentation,
I am trying to figure out what I need to request the network admin and SA to be able to start the install.
We use VLAN for interconnects, so for HAIP I need multiple VLANS and have interfaces created for those by the SA's so that I can use at the "Network Interface Usage" stage of GI install ?
I found following online about this but kind of confused, it talk about having 2 interfaces , This example shows eth1 and eth2 using a 192.168.0.* subnet. But shouldn't they supposed to be on different subnets , rather then same subnet ?
http://en.community.dell.com/techcenter/enterprise-solutions/w/oracle_solutions/2-4-1-how-do-i-setup-the-new-redundant-interconnect-feature-in-oracle-11gr2.aspx

Answer 1

Oracle MoS:
*Solaris IPMP and Trunking for the cluster interconnect in Oracle Grid Infrastructure 11g Rel. 2 [ID 1069584.1]*
11.2.0.2 and above
Started from 11.2.0.2, as Redundant Interconnect is supported natively by Oracle Clusterware, it's not recommended to configure IPMP for cluster interconnect anymore; please refer to note 1210883.1 for more details.
But the note *1210883.1* have a huge list of bug, you must be aware of list of bug of HAIP before choose this option:
11gR2 Grid Infrastructure Redundant Interconnect and ora.cluster_interconnect.haip [ID 1210883.1]
I never used HAIP, then I'm suspect to give my opinion. I always use bound of interface at OS level I consider more simple to manage and is more mature.