mpathadm list mpath-support
mpath-support:  libmpscsi_vhci.so

Choose the mpath support name from the output list

mpathadm show mpath-support libmpscsi_vhci.so
mpath-support:  libmpscsi_vhci.so
      Vendor:  Sun Microsystems
      Driver Name:  scsi_vhci
      Default Load Balance:  round-robin
      Supported Load Balance Types:  
              round-robin
              logical-block
      Allows To Activate Target Port Group Access:  yes
      Allows Path Override:  no
      Supported Auto Failback Config:  1
      Auto Failback:  on
      Failback Polling Rate (current/max):  0/0
      Supported Auto Probing Config:  0
      Auto Probing:  NA
      Probing Polling Rate (current/max):  NA/NA
      Supported Devices:
              Vendor:  SUN     
              Product:  T300            
              Revision:  
              Supported Load Balance Types:
                      round-robin
      ....
      ....

mpathadm list lu
      /dev/rdsk/c4t600A0B8000505B5000000D304C10C46Dd0s2
              Total Path Count: 4
              Operational Path Count: 4
      /dev/rdsk/c4t600A0B8000505B5000000D2F4C10C3EDd0s2
              Total Path Count: 4
              Operational Path Count: 4
      /dev/rdsk/c4t600A0B8000505B5000000D2D4C10C34Dd0s2
              Total Path Count: 4
              Operational Path Count: 4

Select a logical unit name from the output.

mpathadm show lu /dev/rdsk/c4t600A0B8000505B5000000D304C10C46Dd0s2
  Logical Unit:  /dev/rdsk/c4t600A0B8000505B5000000D304C10C46Dd0s2
      mpath-support:  libmpscsi_vhci.so
      Vendor:  IBM     
      Product:  1814      FAStT 
      Revision:  0916
      Name Type:  unknown type
      Name:  600a0b8000505b5000000d304c10c46d
      Asymmetric:  yes
      Current Load Balance:  round-robin
      Logical Unit Group ID:  NA
      Auto Failback:  on
      Auto Probing:  NA

      Paths:  
              Initiator Port Name:  210000e08b945795
              Target Port Name:  200500a0b8505d67
              Override Path:  NA
              Path State:  OK
              Disabled:  no

              Initiator Port Name:  210000e08b945795
              Target Port Name:  200400a0b8505d67
              Override Path:  NA
              Path State:  OK
              Disabled:  no

              Initiator Port Name:  210000e08b94ec9a
              Target Port Name:  200500a0b8505d68
              Override Path:  NA
              Path State:  OK
              Disabled:  no

              Initiator Port Name:  210000e08b94ec9a
              Target Port Name:  200400a0b8505d68
              Override Path:  NA
              Path State:  OK
              Disabled:  no

      Target Port Groups:  
              ID:  1
              Explicit Failover:  yes
              Access State:  standby
              Target Ports:
                      Name:  200500a0b8505d67
                      Relative ID:  0

                      Name:  200500a0b8505d68
                      Relative ID:  0

              ID:  2
              Explicit Failover:  yes
              Access State:  active
              Target Ports:
                      Name:  200400a0b8505d67
                      Relative ID:  0

                      Name:  200400a0b8505d68
                      Relative ID:  0

http://download.oracle.com/docs/cd/E19253-01/820-1931/agkax/index.html