An engineer must use flexible NetFlow on a group of switches. To prevent overloading of the flow connector, if the flow is idle for 20 seconds, the flow sample should be exported. Which command set should be applied?
A.
flow record recordflow exporter flowexport record recordflow cache timeout active 120 cache timeout inactive 20 cache type immediate
B.
flow monitor monitorflow exporter flowexport record recordflow cache timeout active 120 cache timeout inactive 20 cache type immediate
C.
flow monitor monitorflow exporter recordflow cache timeout active 120 cache timeout inactive 20 cache type permanent
D.
flow record recordflow match ipv6 destination ip-address match ipv6 source ip-address match ipv6 protocol-type view match interface input match interface output match transport destination-port collect counter bytes long
- Option A is incorrect because it repeats the "record recordflow" command unnecessarily.
- Option C is incorrect because it does not include the "flow monitor" command to set up the flexible NetFlow monitor.
- Option D is incorrect because it does not include the necessary configuration for exporting flow records based on idle timeout.
All of these seem wrong. Timeout settings are ignored for immediate cache type per the below doc, and answer C doesn't configure a flow record.
https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/fnetflow/command/fnf-cr-book/fnf-c1.html#wp3880665773
"The timeout settings have no effect for the immediate cache type."
I guess it depends on the device or IOS version. I was able to configure this in a lab:
R2(config)#do sh run | sec monitor
flow monitor MONITORFLOW
exporter flowexport
cache timeout inactive 20
cache timeout active 120
cache type immediate
record RECORDFLOW
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