
ping <host> [<length> [<repeat_ms> [<incflag>]]]

     Verify a host is alive, by sending it ICMP Echo Request packets.

     <host> is the address to ping.

     <length> is the number of bytes to use in the data portion of the
     packet being built.  <length> defaults to a small value, sufficient
     to contain a timestamp to facilitate determining round-trip timing.
     Any additional data bytes will contain 0x55 characters ('U').

     <repeat_ms> specifies that instead of sending a single ping, a session
     is to be established to do repeated pings every <repeat_ms> MILLISECONDS.
     A running display of attempts, round-trip times, and mean deviation of
     round-trip times is maintained in this session.  To terminate the
     session, press F10 and then use the reset command.

     <incflag> indicates that the host IP address is to be incremented
     by one at each ping attempt.  It is intended to help search blocks
     of IP addresses for active hosts.  It should be used sparingly if
     at all.

