Solution : https://service.sap.com/sap/support/notes/539523 (SAP Service marketplace login required)
Key words : 
db2icrt db2l<dbsid>set db2instance=db2l<dbsid>db2 catalog tcpip node <dbsid>node remote   <host, virtual db2 server> server sapdb2<dbsid>   remote_instance db2<dbsid>db2 catalog database <dbsid>, local group db<dbsid> mnt manually, node <dbsid>nodedb2set db2_fallback=, local user sap<sapsid> manually, user db2<dbsid>, windows -                             microsoft cluster server, microsoft cluster server reason, windows microsoft cluster server, 'db2l<dbsid>'
Related Notes : 
       
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| 410252 | DB6: Installing the Latest 4.6D DB2 Admin Tools | 
| 106275 | Availability of SAP components on MS Cluster Service |