ping <host> numeric <option>
Specifies that the router must not resolve domain name system (DNS) names during a ping.
- The IPv4 address of the host.
- 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 ping requests to send.
- 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 on every ping, while the device pings for 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 ping 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 ensure that a ping command provides only numeric output, which means that the router does not look up symbolic names for host addresses.
vyatta@vyatta:~$ ping www.google.com numeric. PING www.google.com (184.108.40.206) 56(84) bytes of data. 64 bytes from 220.127.116.11: icmp_req=1 ttl=54 time=42.1 ms 64 bytes from 18.104.22.168: icmp_req=2 ttl=54 time=44.3 ms ^C --- www.google.com ping statistics --- 2 packets transmitted, 2 received, 0% packet loss, time 1001ms rtt min/avg/max/mdev = 42.177/43.278/44.379/1.101 ms