Hi everyone, this post will show you how to create complex classifications for troubleshooting.
Complex Classification statistics is very useful to packet drop problem, it is a little complicated, but very precise.
The creating process:
Firstly, we got to find an unused DSCP value;
2ndly, create a monitor instance based on complex classification policy, assure that every counts’ value is 0 before the ping test;
Finally, launch the ping test with the chosen DSCP value from-RNC or Router, you could easily find out the faulty node by check the packet loss counts of each node after the ping test stop.
1 Create Port Policy
1.1 U2000 Ne explorer “Configuration --> QoS Management -->PolicyManagement --> Port Policy”, click “New”to create a new Qos policy.

1.2 Specify the policy name in the pop dialog, then select “Traffic Classification Configuration”, click “new” button.

1.3 Configure the following parameters in pop dialog:
1) Specify classification ID in “Traffic Classification ID”
2) Click the “Add” button to create match rule, “Match Type” select “DSCP Value”, “Match Value” set DSCP value, here set it 24.
3) Since this classification used just for statistics, so set “Bandwidth Restriction” to“Disabled” in both Ingress & Egressdirections.
4) Click the “ok” button finally.

1.4 Apply the policy
Click the “Application Object” option, then click “Modify” to add bounding ports.

Specify the ports in the service path the pop dialog, then click the “ok” button.

2 Create a Performance Monitor
Click the right button of the mouse on the founding port, then select “Performance Statistics Management”.

Move the chosen port to the right-side panel in the pop dialog.

Click “next” when pop dialog comes.

If a monitoring template not created before, click “Create Data MonitorTemplate” to create a new one. Specify the template name in the pop dialog first, then click “Add”, select the desired statistics, then click “ok” button.

Click “next” to finish creation.
3 Query the statistics data
You could find the instance in the “Performancemonitoring management” panel after it was created. Click the mouse right button, then click “RealTime Monitoring” or“ViewHistorical Data” in the pop-menu to query the relevant data.

That's all, hope my sharing is helpful to you
Thank you!



