The dbping command-line utility is provided to help troubleshoot connections. In particular, you can use it to test if a server with a certain name is available on your network.
The dbping utility takes a connection string as a command-line option, but by default only those pieces required to locate a server are used. It does not attempt to start a server.
dbping -c "eng=Ciaran;CommLinks=tcpip"
dbping