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The closed-loop optimization commands provide you with the means to direct traffic away from links that are approaching their maximum contracted usage rates. The CNA link-monitoring process polls your edge routers at user-specified intervals, and the decision-maker process factors current link-usage rates into the performance-route selection process.
See Figure 2.
For the CNA system to use the closed-loop load optimization algorithm, you must enable SNMP For information on enabling SNMP polling and configuring the link-usage commands for the reporting module polling for each of your service provider links, see Chapter 4: Polling Routers of the CNA Advanced Monitoring Guide.
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