Use the ping command to verify that the connection is up or can be established. For example, consider the following simple round-trip test:
# ping elvis |
where elvis is the name of the PPP interface on the remote host. If the resulting display is
elvis is alive |
then packets can be sent to and received from elvis. If not, a routing problem exists at some point between the local and remote hosts. For more information on ping, refer to "ping Command" and the ping(1M) man page.