The following command displays the DMP nodes that are in the same LUN group as a specified DMP node:
# vxdmpadm getlungroup dmpnodename=hdisk16
NAME STATE ENCLR-TYPE PATHS ENBL DSBL ENCLR-NAME
===============================================================
hdisk14 ENABLED ACME 2 2 0 enc1
hdisk15 ENABLED ACME 2 2 0 enc1
hdisk16 ENABLED ACME 2 2 0 enc1
hdisk17 ENABLED ACME 2 2 0 enc1