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At this stage, if you have completed all of the steps listed in the Configuration Sequence section, the CNA system should now be operational. The CNA engine will fill its internal database with prefixes obtained from your BGP feed.
Before the CNA system can do anything meaningful with these prefixes, however, it needs to gather data about how fast each of your service providers can pass traffic between your network and destinations in each of these prefixes.
The CNA system has two mechanisms for measuring the speed of packet delivery from your web server to individual end users: passive traffic tests and active probes.
You can use either of these methods exclusively, or you can use both simultaneously.
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