On Solaris 11.2, you should be using ipadm to configure network, not ifconfig.

As a glanced thru your posts, there is a lot of errors regarding initial configuration of primary domain (the hypervisor), since you were using Solaris 10 guide on Solaris 11 operating system.

In this point, due to above stated, quickest way would be to reinstall the entire machine and configure it properly following the documentation for your solaris release, in this case Solaris 11.2
After initial installation of operating system, the primary domain will need to have network configured.

The configuration of network will differ depending on the technology used and how are network ports on switch configured (VLAN tagging, trunking etc.)

The most simplest configuration of primary domain would be :

Using ipadm command and selected interfaces (e.g. net0,net1... dladm show-phys will show you connected and available interfaces to configure).

Code:

ipadm create-ip net0
ipadm create-ip net1
ipadm create-ipmp ipmp0
ipadm add-ipmp -i net0 -i net1 ipmp0
ipadm set-ifprop -p standby=on net1 # this is optional, we are using active passive, where net0 is active and net1 is on standby if net0 fails.
ipadm create-addr -T static -a <youraddress>/bitmask ipmp0/v4
route -p add default <yourdefault router>
# you might want to configure resolving, ntp and additional parameters here...

Now that we are over with initial network configuration of primary (control domain)...

Code:

ldm start-reconf primary # we will intitiate a delayed reconfiguration which will be active after reboot
ldm set-vcpu 8 primary # we are giving 8 vcpu to hypervisor
ldm set-mem 4G primary  # we are giving 4 GB of memory to hypervisor
ldm add-spconfig <yourconfigname>

Reboot the host using init 6 command as root.

Network on the hypervisor should work now with persistent route added and static address configured.

Now you need to configure network for ldoms by creating virtual switch(es) to be used with ldoms.
You can use net0 and net1 for virtual switches as well as any other available physical interface (not ipmp groups, but, for instance, VLAN tagged interfaces - yes)

IPMP groups are created inside ldoms.

Aggregated interfaces are created on the hypervisor (control/service) domain, and the newly create interface (aggr0) is the net-dev used for virtual switch creation.

All configuration commands noted by me can and should be expanded for your specific needs.

You will need to read the documentation with understanding, not just paste commands from it to servers.

Hope this clears things a bit.

Regards
Peasant.