HP 6125G HP 6125G & 6125G/XG Blade Switches Network Management and Mon - Page 8

Description, Examples, vpn-instance, Ctrl+C

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-p pad: Specifies the value of the pad field in an ICMP echo request, in hexadecimal format, 1 to 8 bits, in the range of 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: Specifies that only statistics are displayed. Absence of this keyword indicates that all information is displayed. -r: Specifies the recording routing information. If this keyword is not specified, routes are not recorded. -s packet-size: Specifies the length (in bytes) of an ICMP echo request, which is in the range of 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, it considers the ICMP echo reply timed out. The value is in the range of 0 to 65535 and defaults to 2000. -tos tos: Specifies the ToS value for an echo request, which is in the range of 0 to 255 and defaults to 0. -v: Displays the non-ICMP echo reply received. If this keyword is not specified, the system does not display non ICMP echo reply. -vpn-instance vpn-instance-name: Specifies the MPLS L3VPN 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: Specifies the IP address or host name (a string of 1 to 255 characters) for the destination. Description Use ping to verify whether the destination in an IP network is reachable, and to display the related statistics. 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, 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, 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. 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. 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 Reply from 1.1.2.2: bytes=56 Sequence=5 ttl=254 time=1 ms 2

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2
-p
pad
: Specifies the value of the
pad
field in an ICMP echo request, in hexadecimal format, 1 to 8 bits,
in the range of 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
: Specifies that only statistics are displayed. Absence of this keyword indicates that all information is
displayed.
-r
: Specifies the recording routing information. If this keyword is not specified, routes are not recorded.
-s
packet-size
: Specifies the length (in bytes) of an ICMP echo request, which is in the range of 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, it considers the ICMP echo reply timed
out. The value is in the range of 0 to 65535 and defaults to 2000.
-tos
tos
: Specifies the ToS value for an echo request, which is in the range of 0 to 255 and defaults to 0.
-v
: Displays the non-ICMP echo reply received. If this keyword is not specified, the system does not
display non ICMP echo reply.
-vpn-instance
vpn-instance-name
: Specifies the MPLS L3VPN 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
: Specifies the IP address or host name (a string of 1 to 255 characters) for the destination.
Description
Use
ping
to verify whether the destination in an IP network is reachable, and to display the related
statistics.
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, 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, 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.
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
Reply from 1.1.2.2: bytes=56 Sequence=5 ttl=254 time=1 ms