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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 tasks:
•
Enable sending ICMP time exceeded messages on the intermediate devices between the
source and the destination devices. If the intermediate devices are HPE devices, use the
ip
ttl-expires enable
command.
•
Enable sending ICMP destination unreachable messages on the destination device. If the
destination device is an HPE device, use the
ip unreachables enable
command.
For more information about the
ip ttl-expires enable
and
ip unreachable enable
commands, 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 address
of ICMP echo requests.
destination ip
ip-address
By default, no destination IP
address is specified.
5.
(Optional.) Specify the payload
size in each ICMP echo
request.
data-size
size
The default setting is 100 bytes.
6.
(Optional.) Specify the string to
be filled in the payload of each
ICMP echo request.
data-fill
string
The default payload fill string is
hexadecimal number
00010203040506070809.
7.
(Optional.) Specify the source
IP address of ICMP echo
requests.
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. Otherwise,
no ICMP echo requests can be sent
out.
8.
(Optional.) 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.
(Optional.) Specify the interval
for sending ICMP echo
requests.
probe packet-interval
packet-interval
The default setting is 20
milliseconds.
10.
(Optional.) 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.
11.
(Optional.) Specify an LSR
path.
lsr-path ip-address
&<1-8>
By default, no LSR path is specified.
The path jitter operation uses the
tracert to detect the LSR path to the
destination, and sends ICMP echo
