Which two guidelines and limitations of NetFlow on Cisco NX OS are true? (Choose two.)
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A. B. C. D. E.CE.
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NetFlow is a network protocol that allows network administrators to collect IP traffic information and analyze network usage patterns. It can be used to monitor network traffic, detect security threats, and optimize network performance. NetFlow is supported on Cisco NX-OS, which is the operating system used on Cisco Nexus switches.
Now, let's review the guidelines and limitations of NetFlow on Cisco NX-OS:
A. The Cisco Nexus 2000 Series Fabric Extender does not support bridged NetFlow.
This statement is true. The Cisco Nexus 2000 Series Fabric Extender (FEX) is a device that extends the capabilities of a parent switch by providing additional interfaces. However, FEX does not support bridged NetFlow. This means that you cannot enable NetFlow on a FEX to monitor traffic between devices connected to the FEX.
B. If you change a Layer 2 interface to a Layer 3 interface, the software converts the Layer 2 NetFlow to Layer 3 NetFlow automatically.
This statement is true. When you change a Layer 2 interface to a Layer 3 interface, the software automatically converts the Layer 2 NetFlow to Layer 3 NetFlow. This allows you to continue monitoring traffic on the interface without having to reconfigure NetFlow.
C. You must configure a sourceinterface. If you do not configure a source interface, the exported remains in a disables state.
This statement is true. In order to enable NetFlow on a Cisco NX-OS device, you must configure a source interface. This is the interface that NetFlow will use to monitor traffic. If you do not configure a source interface, NetFlow will remain disabled and no data will be exported.
D. Valid record name is optional to configure.
This statement is false. You must configure a valid record name when configuring NetFlow on a Cisco NX-OS device. The record name specifies the type of information that will be exported by NetFlow. If you do not configure a valid record name, NetFlow will not work correctly.
E. Only Layer 2 NetFlow is applied on Layer 2 interfaces, and only Layer 3 NetFlow is applied on Layer 3 interfaces.
This statement is false. You can apply both Layer 2 and Layer 3 NetFlow on both Layer 2 and Layer 3 interfaces. The type of NetFlow that you apply depends on the type of traffic that you want to monitor.
In summary, the two guidelines and limitations of NetFlow on Cisco NX-OS that are true are: