HP VPN Firewall Appliances High Availability Command Reference

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If the payload length is greater than the string length, the system fills the payload with the string cyclically
until the payload is full. For example, if you configure the string as abcd and the payload size as 6 bytes,
abcdab is filled.
How the string is filled varies with operation types:
• For the ICMP echo operation, the string fills the whole payload of ICMP echo requests.
• For the UDP echo operation, the first five bytes of the payload of a UDP packet are for special
purpose, so the string fills the remaining part of payload.
• For the UDP jitter operation, the first 68 bytes of the payload of a UDP packet are for special
purpose, so the string fills the remaining part of the payload.
• For the voice operation, the first 16 bytes of the payload of a UDP packet are for special purpose,
so the string fills the remaining part of the payload.
Examples
# Configure string abcd to be filled in the payload of an ICMP echo request.
<Sysname> system-view
[Sysname] nqa entry admin test
[Sysname-nqa-admin-test] type icmp-echo
[Sysname-nqa-admin-test-icmp-echo] data-fill abcd
data-size
Use data-size to configure the size of the payload in each ICMP echo request of the ICMP echo operation
or in each UDP packet of the UDP echo, UDP jitter, or voice operation.
Use undo data-size to restore the default.
Syntax
data-size size
undo data-size
Views
ICMP echo operation view, UDP echo operation view, UDP jitter operation view, voice operation view
Default command level
2: System level
Parameters
size: Specifies the size of the payload in each probe packet in bytes. The value range for probe packets
of the ICMP echo or UDP echo operation is 20 to 8100, for probe packets of the UDP jitter operation is
68 to 8100, and for probe packets of the voice operation is 16 to 1500.
Usage guidelines
Table 17 Default payload size of a probe packet
Test t
yp
e Codec t
yp
e Default value (in b
y
tes)
ICMP echo N/A 100
UDP echo N/A 100
UDP jitter N/A 100