The default is 56, which translates into 64 ICMP data bytes when combined with the 8 bytes of ICMP header data. Interface that has no route through it (e.g., after the If the host isn't on a directlyĪttached network, an error is returned. r Bypass the normal routing tables and send directly to a q Be quiet: display nothing except for the summary lines at startup time and when finished. Q Don't display responses such as Network Unreachable ICMP messages concerning the ECHO_REQUESTs sent. You should find this useful forĭiagnosing data-dependent problems in a network.įor example, -p ff causes the sent packet to be filled with ones. p pattern Fill out the packet with this many paddingīytes (maximum is 16). This is useful to foil compression on PPP and other links. P Use a pseudo-random sequence for the data instead of the default,įixed sequence of incrementing 8-bit integers. o Exit successfully after receiving one reply packet. No attempt is made to look up symbolic names for host addresses.
L Disable loopback when sending to multicast destinations, so the transmitting host doesn't see
l preload Send this many packets as fast as possible before For the -f option, the interval is 0.01 seconds.
i interval Wait interval seconds between sending each packet I addr Send multicast datagrams on the network interface specified by the interface's IP address. h host Alternate way of specifying the target host instead of as the last argument. g gateway Use Loose Source Routing to send the ECHO_REQUEST packets via It can be very hard on a network-use it with caution. Only the superuser ( root) may use the -f option
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