3Com Switch 8800 Advanced Software V5 Configuration Guide

1100 CHAPTER 86: NQA CONFIGURATION
n
The number of probes made in a jitter test depends on the count command, while
the number of test packets sent in each probe depends on the jitter-packetnum
command.
Configuration example
1 Network requirements
Use the NQA jitter function to test the delay jitter of packet transmission between
the local port (Device A) and the specified destination port (Device B).
2 Network diagram
Figure 326 Network diagram for the jitter test
3 Configuration procedure
■ Configuration on Device B
# Enable the NQA server and configure the listening IP address and port number.
<DeviceB> system-view
[DeviceB] nqa-server enable
[DeviceB] nqa-server udpecho 10.2.2.2 9000
■ Configuration on Device A
# Enable the NQA client, create a jitter test group, and configure related test
parameters.
<DeviceA> system-view
[DeviceA] nqa-agent enable
[DeviceA] nqa admin jitter
[DeviceA-nqa-admin-jitter] test-type jitter
[DeviceA-nqa-admin-jitter] destination-ip 10.2.2.2
[DeviceA-nqa-admin-jitter] destination-port 9000
# Enable the jitter test.
[DeviceA-nqa-admin-jitter] test-enable
# View the test results with the display nqa results and display nqa jitter
commands.
[DeviceA-nqa-admin-jitter] display nqa results admin jitter
NQA entry(admin admin, tag jitter) test result:
Destination ip address: 10.2.2.2
Send operation times: 10 Receive response times: 10
Min/Max/Average Round Trip Time: 1/9/2
Square-Sum of Round Trip Time: 114
Last succeeded test time: 2009-08-15 15:19:10.9
Extend result:
Packet lost in test: 0%
Failures due to Timeout: 0
Failures due to System Busy: 0
Failures due to Disconnect: 0
Failures due to No Connection: 0
IP network
NQA client
Device BDevice A
10.1.1.1/16 10.2.2.2/16
NQA server