destination to the source or from an unknown direction). According to these statistics, the
network administrator can easily detect network faults and malicious attacks.
Step 3
Run:
nqa
test-instance
admin-name
test-name
An NQA test instance is created and the test instance view is displayed.
Step 4
Run:
test-type
jitter
The test type is set to Jitter.
Step 5
Run:
destination-address
ipv4
ip-address
The destination IP address is configured.
Step 6
Run:
destination-port
port-number
The destination port number is configured.
Step 7
(Optional) Perform the following as required to configure other parameters for the Jitter test
( For detailed parameter configurations, see the chapter
Configuring Universal NQA Test
):
l
To configure the source IP address, run the
source-address
ipv4
ip-address
command.
l
To configure the source port number, run the
source-port
port-number
command.
l
To configure the probe times in the NQA test, run the
probe-count
number
command.
l
To configure the number of test packets sent each time, run the
jitter-packetnum
number
command.
The Jitter test is used to collect statistics and perform analysis of the transmission delay
variation of the UDP packets. The system sends multiple test packets for each test to make
the statistics more accurate. The more test packets are sent, the more accurate the statistics
and analysis are. This process, however, is time consuming.
NOTE
The number of the Jitter tests depends on the
probe-count
command. The number of test packets sent
during each test depends on the
jitter-packetnum
command. During the actual configuration, the
product of the number of test times and the number of the test packets must be less than 3000.
l
To configure the interval for sending test packets, run the
interval
{
milliseconds
interval
|
seconds
interval
} command.
The shorter the interval for sending the Jitter test packets is, the faster the test is completed.
If the interval, however, is set to a very small value, the jitter statistics result may have a
greater error.
l
To configure the percentage of the failed NQA tests, run the
fail-percent
percent
command.
l
To send the NQA test packet without searching the routing table, run the
sendpacket
passroute
command.
Step 8
Run:
start
The NQA test is started.
Select the start mode as required because the
start
command has several forms.
Quidway S2700 Series Ethernet Switches
Configuration Guide - Network Management
6 NQA Configuration
Issue 01 (2011-07-15)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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