Restrictions for Encrypted Traffic Analytics
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ETA is supported only on access ports and wireless VLAN on SDA deployment. It is not supported on management, trunk, port-channel, SVI, and loopback interfaces.
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ETA and Cisco Application Visibility and Control (AVC) features can not be applied on the same interface.
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When an interface has to be configured as a Flexible NetFlow monitor with ETA enabled, ETA should be configured globally prior to configuration of Flexible NetFlow on the interface.
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An interface being used as a Flexible NetFlow monitor with ETA enabled, cannot be used to monitor Flexible NetFlow alone on a second target. In such a scenario a separate Flexible NetFlow monitor should be created to monitor the second target.