Probably not related to DP. See if you can run remote executables
rexec 172.29.213.100 ls
This is what DP uses to do things like create directories and copy files, and start services on remote hosts
If this doesn't work, try enabling Secure Shell on your Installation server, by adding thsi line to the file
/opt/omni/.omnirc
OB2_SSH_ENABLED=1
Save teh file, make sure it has no extension, like 'txt' or TMPL