F3726, F3211, F3174, R5135, R3816-HP Firewalls and UTM Devices System Management and Maintenance Command Reference-6PW100

2
-n: Disables domain name resolution for the host argument. When this keyword is not provided, if the
host argument represents the host name of the destination, the device translates host into an address.
-p pad: Specifies the value of the pad field in an ICMP echo request, in hexadecimal format, 1 to 8 bits,
in the range 0 to ffffffff. If the specified value is less than 8 bits, 0s are added in front of the value to
extend it to 8 bits. For example, if pad is configured as 0x2f, then the packets are padded with
0x0000002f repeatedly to make the total length of the packet meet the requirements of the device. By
default, the padded value starts from 0x01 up to 0xff, where another round starts again if necessary, like
0x010203…feff01….
-q: Displays only statistics. If this keyword is not specified, the system displays all information.
-r: Records routing information. If this keyword is not provided, routes are not recorded.
-s packet-size: Specifies length (in bytes) of an ICMP echo request, which ranges from 20 to 8100 and
defaults to 56.
-t timeout: Specifies the timeout value (in milliseconds) of an ICMP echo reply (ECHO-REPLY). If the
source does not receive an ICMP echo reply within the timeout time, it considers the ICMP echo reply
timed out. The value ranges from 0 to 65535 and defaults to 2000.
-tos tos: Specifies the ToS value of an echo request, which ranges from 0 to 255 and defaults to 0.
-v: Displays non ICMP echo reply received. If this keyword is not provided, the system does not display
non ICMP echo reply.
-vpn-instance vpn-instance-name: Specifies the VPN to which the destination belongs, where
vpn-instance-name is a case-sensitive string of 1 to 31 characters. If the destination is on the public
network, do not specify this option.
host: IP address or host name (a string of 1 to 255 characters) of the destination.
Usage guidelines
With the ping command executed, the source sends an ICMP echo request to the destination:
• If the destination name is unrecognizable, the system outputs "Error: Ping: Unknown host
host-name".
• If the source receives an ICMP echo reply from the destination within the timeout time, the system
outputs the related information of the reply.
• If the source does not receive an ICMP echo reply from the destination within the timeout time, the
system outputs "Request time out."
To use the name of the destination host to perform the ping operation, you must configure the Domain
Name System (DNS) on the device first; otherwise, the ping operation fails. For more information about
DNS, see Network Management Configuration Guide.
To abort the ping operation during the execution of the command, press Ctrl+C.
Examples
# Test whether the device with an IP address of 1.1.2.2 is reachable.
<Sysname> ping 1.1.2.2
PING 1.1.2.2: 56 data bytes, press CTRL_C to break
Reply from 1.1.2.2: bytes=56 Sequence=1 ttl=254 time=205 ms
Reply from 1.1.2.2: bytes=56 Sequence=2 ttl=254 time=1 ms
Reply from 1.1.2.2: bytes=56 Sequence=3 ttl=254 time=1 ms
Reply from 1.1.2.2: bytes=56 Sequence=4 ttl=254 time=1 ms