Cisco Cisco FirePOWER Appliance 8350 Guida All'Installazione

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FireSIGHT System Installation Guide
 
Chapter 2      Understanding Deployment
  Using a Multi-Port Managed Device
You can use the virtual switch to replace both the tap and the switch in your deployment. Note that if 
you replace the tap with a virtual switch, you lose the tap packet delivery guarantee.
You can also create interfaces to capture data from separate networks. The following diagram shows a 
single device with a dual-port adapter and two interfaces connected to two networks.
In addition to using one device to monitor both network segments, you can use the virtual switch 
capability of the device to replace both switches in your deployment.