Unable to Add Trap Destination Using the dcli Utility for the Exadata Storage Server

Dear collegues,
I logged in as root on the Database node.

I invoked command:

[root@ed01db01 ~]# dcli -g /opt/oracle.SupportTools/onecommand/cell_group -l celladmin -n cellcli -e "alter cell snmpsubscriber=\(\(host="10.10.10.133",port=162,community=public,type=asr\)\)"

celladmin@ed01cel02's password: celladmin@ed01cel03's password: celladmin@ed01cel01's password:<password entered>
Permission denied, please try again.
celladmin@ed01cel03's password:<password entered>
Permission denied, please try again.
celladmin@ed01cel01's password:<password entered>
Permission denied, please try again.
celladmin@ed01cel03's password:<password entered>
Permission denied (publickey,gssapi-with-mic,password).
... here was system waiting until I pressed <Enter> key ...