In a Netbackup environment If we have added a new media server and to add this media server to all Client servers

Go to  <install_dir>\VERITAS\NetBackup\bin

Run  "add_media_server_on_clients.exe"

The add_media_server_on_clients command reads the server list information from the master server and pushes this list out to clients.  This prevents the need of updating every client manually with the appropriate server list.