System Maintaining And Debugging Commands; System Maintaining Commands - 3Com S7906E Command Reference Manual

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System Maintaining and Debugging Commands

System Maintaining Commands

ping
Syntax
ping [ ip ] [ -a source-ip | -c count | -f | -h ttl | -i interface-type interface-number | -m interval | -n | -p pad
| -q | -r | -s packet-size | -t timeout | -tos tos | -v | -vpn-instance vpn-instance-name ] * remote-system
View
Any view
Default Level
0: Visit level
Parameters
ip: Supports IPv4 protocol.
-a source-ip: Specifies the source IP address of an ICMP echo request (ECHO-REQUEST). It must be
a legal IP address configured on the device.
-c count: Specifies the number of times that an ICMP echo request is sent, in the range 1 to
4294967295. The default value is 5.
-f: Discards packets larger than the MTU of a given interface, that is, the ICMP echo request is not
allowed to be fragmented.
-h ttl: Specifies the TTL value for an ICMP echo request, in the range 1 to 255. The default value is 255.
-i interface-type interface-number: Specifies the ICMP echo request sending interface by its type and
number.
-m interval: Specifies the interval (in milliseconds) to send an ICMP echo response, in the range 1 to
65535. The default value is 200 ms.
If a response from the destination is received within the timeout time, the interval to send the next
echo request equals the actual response period plus the value of interval.
If no response from the destination is received within the timeout time, the interval to send the next
echo request equals the timeout value plus the value of interval.
-n: Specifies that the Domain Name System (DNS) is disabled. DNS is enabled by default, that is, the
hostname is translated 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 will be added to extend the value to 8
bits. For example, if pad is configured as 0x2f, then the packets will be 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....
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