ping [node node-id] routing destination ip-address -
         [,size integer] [,timeout integer]

    The Destination argument is required.  It specifies an ip-address
    to which an ICMP Echo Request is to be sent.

    The Size argument is optional.  It represents the size in bytes of
    the data part of the ICMP Echo Request message.  The default is 64
    bytes.

    The Timeout argument is optional.  It is the time in seconds for
    which the routing module will wait for an ICMP Echo Reply message.
    The default is 5 seconds.