Thanks for your help...
I am able to connect to remote machine using the solution which you provided.
I have to install openssh on my windows machine and then placed the openssh-win64 extract in c:\programfules.Setup the environment variable(path system variable). Provided the path till openssh folder (c:\programfiles\openSSH-win64) and then using windows power shell i installed the sshd and ssh-agent.
And then started the openssh server and did firewall setting to allow ssh connection.
All working fine. Able to get and put files on the remote machine using sshlibrary of robotframework.
Thanks
Himanshu