H3C Technologies H3C S6300 Series Switches - Manual (Page 140)

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Configuring the path jitter operation
The path jitter operation measures the jitter, negative jitters, and positive jitters from the NQA client to
each hop on the path to the destination.
Before you configure the path jitter operation, perform the following configurations:
• Enable sending ICMP time-exceeded packets on the intermediate devices between the source and
the destination devices. If the intermediate devices are H3C devices, use the ip ttl-expires enable
command.
• Enable sending ICMP destination unreachable packets on the destination device. If the destination
device is an H3C device, use the ip unreachables enable command.
For more information about the ip ttl-expires enable and the ip unreachable enable command, see Layer
3—IP Services Command Reference.
To configure the path jitter operation:
Step Command Remarks
1. Enter system view. system-view N/A
2. Create an NQA operation and
enter NQA operation view. nqa entry admin-name
operation-tag By default, no NQA operation is
created.
3. Specify the path jitter type and
enter its view.
type path-jitter N/A
4. Specify the destination IP
address of ICMP echo requests. destination ip ip-address
By default, no destination IP address
is specified.
5. (Optional.) Specify the payload
size for each ICMP echo
request.
data-size size The default setting is 100 bytes.
6. (Optional.) Specify the payload
fill string for ICMP echo
requests. data-fill string
The default setting is the hexadecimal
number
00010203040506070809.
7. Specify the source IP address of
ICMP echo request.
source ip ip-address
By default, no source IP address is
specified.
The source IP address must be the IP
address of a local interface and the
interface must be up.
8. Specify the number of ICMP
echo requests to be sent in a
path jitter operation.
probe packet-number
packet-number
The default setting is 10.
9. Specify the interval for sending
ICMP echo requests. probe packet-interval
packet-interval
The default setting is 20 milliseconds.
10. Specify how long the NQA
client waits for a response from
the server before it regards the
response times out.
probe packet-timeout
packet-timeout The default setting is 3000
milliseconds.