Configuring Parameters for the Path Jitter Test
An NQA path jitter test instance, however, can identify the router whose jitter value is great.
Procedure
- Run system-view
The system view is displayed.
- Run nqa test-instance admin-name test-name
An NQA test instance is created and the test instance view is displayed.
- Run test-type pathjitter
The type of the test instance is configured as path jitter.
- Run destination-address ipv4 destAddress
The destination IP address is configured.
- (Optional) Run the following commands to configure other parameters for the path jitter test:
Run icmp-jitter-mode { icmp-echo | icmp-timestamp }
The mode of the path jitter test is configured.
Run vpn-instance vpn-instance-name
The VPN instance to be tested is configured.
Run source-address ipv4 srcAddress
The source IP address is configured.
Run probe-count number
The number of test probes to be sent each time is set.
Run jitter-packetnum packetNum
The number of test packets to be sent during each test is set.
The probe-count command is used to configure the number of times for the jitter test and the jitter-packetnum command is used to configure the number of test packets sent during each test. In actual configuration, the product of the number of times for the jitter test and the number of test packets must be less than 3000.
Run interval seconds interval
The interval for sending jitter test packets is set.
The shorter the interval is, the sooner the test is complete. However, delays arise when the processor sends and receives test packets. Therefore, if the interval for sending test packets is set to a small value, a relatively greater error may occur in the statistics of the jitter test.
Run fail-percent percent
The percentage of the failed NQA tests is set.
- Run start
The NQA test is started.
Select the start mode as required because the start command has several forms.
To perform the NQA test immediately, run the startnow [ end { at [ yyyy/mm/dd ] hh:mm:ss | delay { seconds second | hh:mm:ss } | lifetime { seconds second | hh:mm:ss } } ] command.
The test instance is started immediately.
To perform the NQA test at the specified time, run the startat [ yyyy/mm/dd ] hh:mm:ss [ end { at [ yyyy/mm/dd ] hh:mm:ss | delay { seconds second | hh:mm:ss } | lifetime { seconds second | hh:mm:ss } } ] command.
The test instance is started at a specified time.
To perform the NQA test after a certain delay period, run the startdelay { seconds second | hh:mm:ss } [ end { at [ yyyy/mm/dd ] hh:mm:ss | delay { seconds second | hh:mm:ss } | lifetime { seconds second | hh:mm:ss } } ] command.
The test instance is started after a certain delay.