You can display the hierarchy of all the devices discovered by DDL, including iSCSI devices.
To list all the devices including iSCSI
# vxddladm list
The following is a sample output:
HBA c2 (20:00:00:E0:8B:19:77:BE) Port c2_p0 (50:0A:09:80:85:84:9D:84) Target c2_p0_t0 (50:0A:09:81:85:84:9D:84) LUN c2t0d0s2 . . . HBA c3 (iqn.1986-03.com.sun:01:0003ba8ed1b5.45220f80) Port c3_p0 (10.216.130.10:3260) Target c3_p0_t0 (iqn.1992-08.com.netapp:sn.84188548) LUN c3t0d0s2 LUN c3t0d1s2 Target c3_t1 (iqn.1992-08.com.netapp:sn.84190939) . . .