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Configuration prerequisites, Configuring udp jitter tests – H3C Technologies H3C SR8800 User Manual

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2.

The destination affixes a time stamp to each packet that it receives, and then sends it back to the

source.

3.

Upon receiving the response, the source calculates the delay jitter, which reflects network
performance. Delay refers to the amount of time it takes a packet to be transmitted from source to

destination or from destination to source. Delay jitter is the delay variation over time.

Configuration prerequisites

UDP jitter tests require cooperation between the NQA server and the NQA client. Before you start UDP

jitter tests, configure UDP listening services on the NQA server. For more information about UDP listening
service configuration, see “

Configuring the NQA server

.”

Configuring UDP jitter tests

To configure UDP jitter tests:

Step Command

Remarks

1.

Enter system view.

system-view

N/A

2.

Enter NQA test group view.

nqa entry admin-name
operation-tag

N/A

3.

Configure the test type as UDP
jitter and enter test type view. type udp-jitter N/A

4.

Configure the destination

address of UDP packets.

destination ip ip-address

By default, no destination IP
address is configured.
The destination IP address must be
the same as that of the listening

service on the NQA server.

5.

Configure the destination port
of UDP packets.

destination port port-number

By default, no destination port
number is configured.
The destination port must be the

same as that of the listening service
on the NQA server.

6.

Specify the source port
number of UDP packets.

source port port-number

Optional.
By default, no source port number
is specified.

7.

Configure the size of the data

field in each UDP packet.

data-size size

Optional.
100 bytes by default.

8.

Configure the string to be
filled in the data field of each

probe packet.

data-fill string

Optional.
By default, the string is the

hexadecimal number
00010203040506070809.

9.

Configure the number of

probe packets to be sent

during each UDP jitter probe
operation.

probe packet-number
packet-number

Optional.
10 by default.

10.

Configure the interval for

sending probe packets during
each UDP jitter probe

operation.

probe packet-interval
packet-interval

Optional.
20 milliseconds by default.