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The license file includes the following information:
The major software version release number must be less than or equal to the software version release number specified in the license file.
The license check timeout period specifies the time between license renewal checks. The default timeout period is 10 minutes.
Every CNA license includes full monitoring capability, called reporting mode, and the Web application model. Application models designate how the CNA server handles application measurement data and decision making. All trends and measurement reports and the Web application model are included in the base CNA license.
The license file can also include the following information:
Route assert mode, marketed as the Adaptive Path Controller license option, enables the path optimization feature in CNA. Route asset mode complements the basic reporting mode.
The application models each have internal parameters that you can adjust to customize a model to suit the needs of your applications. In many cases, the application models provided will not require any changes and may be used with the default values.
If you are using only TCP for your measurements, you must use the web application model.
The model you use will likely depend largely upon what is convenient for your network infrastructure. For more information regarding application models, see Chapter 6: Decision Policies and Application Models in the CNA Basic Monitoring Guide.
The voice application model is used to optimize voice traffic on your network. When using the voice application model, you must use either the traceprobe and/or ICMP measurement modes. If you are able to employ only TCP, then you should use the web application model. The reason for this is because the voice model requires measurements of the loss and jitter characteristics in your network to a higher degree of precision than is possible with TCP.
The enterprise application model is used to optimize time-critical TCP transactions on your network, such as transactional web, file transfer, and gaming. When using the enterprise application model, you must use either the traceprobe or ICMP measurement modes. If you are able to employ only TCP, then you should use the web application model. The reason for this is because the enterprise model requires measurements of the loss characteristics in your network to a higher degree of precision than is possible with TCP.
The multimedia application model is used to optimize real-time applications on your network. Examples include voice over IP, streaming audio, and video conferencing applications. When using the multimedia application model, you must use either the traceprobe or ICMP measurement modes. If you are able to employ only TCP, then you should use the web application model. The reason for this is because the multimedia model requires measurements of the loss and jitter characteristics in your network to a higher degree of precision than is possible with TCP.
The streaming audio and video application model is used to optimize streaming audio and video applications on your network. When using the streaming application model, you must use either the traceprobe or ICMP measurement modes. If you are able to employ only TCP, then you should use the web application model. The reason for this is because the streaming model requires measurements of the loss and jitter characteristics in your network to a higher degree of precision than is possible with TCP.
Cost optimization includes billing command configuration. This configuration is used to generate daily trends and monthly reports.
Each of these CNA feature licenses defines the number of monitored endpoints that are allowed. The server hosting the master license file tracks the cumulative number of monitored endpoints.
The master license must have the correct features and enough total endpoints associated with each feature to satisfy incoming requests from each CNA server. If the master license does not have sufficient licenses available for a CNA server, its license requests are denied in entirety (all features for all endpoints).
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