Monitor server transactions

With the quality of service (QoS) monitor, you can verify that the QoS policies are working as you intend them to work.

The QoS monitor can help you in the planning phase and the troubleshooting phase of QoS.

You can use the monitor to analyze your IP traffic through the server. This helps you determine where congestion is occurring within your network. The QoS monitor can help you continue to monitor your network so you can adjust your policies as needed.

Planning and maintaining performance

One of the most difficult parts of implementing QoS is determining what performance limits to set in your policies. There is no specific recommendation because every network is different. To help you determine what values are right for you, you might want to use the monitor before you even start any business-specific policies.

Try to create a differentiated service policy without selecting metering to identify how your current network traffic is behaving. Enable this policy and start the monitor. The monitor's results can help you tune your policies to your specific needs. See a sample monitor policy that will identify how your current traffic is behaving.

Troubleshooting performance problems

You can also use the monitor to troubleshoot problems. Using the monitor output, you can determine if the parameters you assigned to a policy are being followed. If your policies are appearing in the monitor but do not appear to be affecting traffic, do the following verification:

If the policy is filtering based on a Uniform Resource Identifier (URI), verify that Fast Response Cache Accelerator (FRCA) is enabled and configured properly. Before you set up an inbound policy that uses URIs, you must ensure that the application port assigned for the URI matches the listen directive enabled for FRCA in the Apache Web server configuration.
Verify that the policy schedule. You might be looking for results during an inactive time.
Verify that the port number is correct.
Verify that the IP address is correct.

For some examples of monitor output, visit the QoS scenarios or view all the monitor fields in monitoring.