6.14.4 Checking the Configuration
After configuring the jitter test, you can view the test result.
6.14.1 Establishing the Configuration Task
Before configuring a jitter test, familiarize yourself with the applicable environment, complete
the pre-configuration tasks, and obtain the required data. This can help you complete the
configuration task quickly and accurately.
Applicable Environment
The jitter time refers to the interval for sending two adjacent packets minus the interval for
receiving the two packets.
The process of a Jitter test is as follows:
1.
The source sends a packet to the destination at a specified interval.
2.
After receiving the packet, the destination adds a timestamp to the packet and returns them
to the source.
3.
After receiving the returned packets, the source subtracts the interval for the source to send
two adjacent packets from the interval for the destination to receive the two packets and
then obtains the jitter time.
The maximum, minimum, and average jitter time calculated based on the information received
on the source can clearly show the network status.
In a Jitter test, you can set the number of packets to be sent consecutively. Through this setting,
certain traffic can be simulated within a certain period. For example, if you set 3000 UDP packets
to be sent at an interval of 20 milliseconds. Then, in one minute, G711 traffic is simulated.
NOTE
To improve the test accuracy, you can configure the Network Time Protocol (NTP) on both the client and
the server.
Pre-configuration Tasks
Before configuring the Jitter test, configure reachable routes between the NQA client and the
NQA server.
Data Preparation
To configure the Jitter test, you need the following data.
No.
Data
1
Administrator name and test name
2
IP address and the port number monitored by the UDP server
3
Destination IP addresses and port numbers of the probe packets sent by the UDP
client
6 NQA Configuration
Quidway S9300 Terabit Routing Switch
Configuration Guide - Network Management
6-38
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Copyright © Huawei Technologies Co., Ltd.
Issue 03 (2010-09-20)
