Could not validate ASMSNMP password due to following error- "ORA-01031: insufficient privileges"

Platform: Oracle 11g R2 grid

At Fist Node's $ prompt execute

$ orapwd file= $GRID_HOME /dbs/orapw+ASM1 entries=5 password=your-password

At Fist Node's $ prompt execute

$ orapwd file=$GRID_HOME/dbs/orapw+ASM2 entries=5 password=your-password

From any of the node as 11g Grid Infrastructure owner execute:

export ORACLE_SID=+ASM1

export ORACLE_HOME=/u01/app/11.2.0/grid

[grid@node1 bin]$ sqlplus / as sysasm

SQL>create user asmsnmp identified by your-password;

SQL> grant sysdba to asmsnmp;