ping <host> size <bytes> <option>
Specifies the number of bytes to send for a ping request.
- Pings the IPv4 address of the host.
- Pings the IPv6 address of the host.
- A host being pinged. This keyword is used when the host is specified as a host name rather than as an IP address.
- The number of bytes to send for a ping request.
- Each of the following entries are considered options. These options can be issued consecutively, that is, in the same command line.
- Adaptively sets interpacket interval.
- Allows you to ping broadcast address.
- Makes a beep sound during every ping, while the device pings for the host details.
- Bypasses normal routing tables during ping.
- Specifies the number of ping requests to send.
- Specifies the number of seconds before which ping expires.
- Matches the overall size of the data packet with the resultant size of the Layer 3 packet.
- Sends 100 ping requests each second.
- Specifies an interface that the device must use as the source address.
- Specifies the time in seconds for which the device must wait between ping requests.
- Specifies that the device must consider the request for special processing.
- Specifies the path MTU discovery strategy.
- Suppresses loop-back of multicast pings.
- Does not resolve domain name system (DNS) names during ping.
- Specifies the hexadecimal digit pattern to fill the packet.
- Prints only the ping summary page.
- Records the route that the packet takes.
- Specifies the number of bytes to send for a ping request.
- Displays the timestamp during ping output.
- Marks packet with specified type of service (TOS).
- Specifies the maximum packet life-time for a host.
- Displays a detailed output for the ping command.
The ping command tests whether a network host is reachable.
The ping command uses the ECHO_REQUEST datagram (ping) of the ICMP protocol to get an ICMP ECHO_RESPONSE from a host or gateway. ECHO_REQUEST datagrams have an IP and an ICMP header, followed by a struct timeval data type and then an arbitrary number of pad bytes that are used to fill the packet.
When the ping command is interrupted by typing <Ctrl>+c, a brief statistical summary is displayed.
This example shows how to specify the number of bytes to send while testing the IP address for network reachability.
vyatta@vyatta:~$ ping 2012:dead::1 size 1200 PING 2012:dead::1(2012:dead::1) 1200 data bytes 1208 bytes from 2012:dead::1: icmp_seq=1 ttl=64 time=0.046 ms 1208 bytes from 2012:dead::1: icmp_seq=2 ttl=64 time=0.128 ms ^C --- 2012:dead::1 ping statistics --- 2 packets transmitted, 2 received, 0% packet loss, time 999ms rtt min/avg/max/mdev = 0.046/0.087/0.128/0.041 ms vyatta@VR-1:~$ ping 2012:dead::1 PING 2012:dead::1(2012:dead::1) 56 data bytes 64 bytes from 2012:dead::1: icmp_seq=1 ttl=64 time=0.026 ms 64 bytes from 2012:dead::1: icmp_seq=2 ttl=64 time=0.034 ms ^C