You can check some guide in here http://docs.oasis-open.org/tosca/tosca-nfv/v1.0/csd03/tosca-nfv-v1.0-csd03.html#_Toc447714731
You can check some guide in here http:// docs.oasis- open.org/ tosca/tosca- nfv/v1. 0/csd03/ tosca-nfv- v1.0-csd03. html#_Toc447714 731