HPE Aruba Certified ClearPass Expert (ACCX) — Question 12

A customer would like to utilize some ArubaOS-CX 8325 switches to discard unwanted traffic to the IP address 10.20.30.40.
You enter the following command on the switch:
ip route 10.20.30.40/32 blackhole
What will be the result?

Answer options

• A. The switch will discard packets to the destined host and create a log message.
• B. The switch will not discard packets to the destined host.
• C. The switch will discard packets to the destined host silently
• D. The switch will discard packets to the destined host and return ICMP error to the sender.

Correct answer: D

Explanation

The command 'ip route 10.20.30.40/32 blackhole' configures the switch to silently discard packets to that IP address without sending any feedback. Therefore, option D is incorrect as it states that an ICMP error will be returned, which is not the case with a blackhole route. Options A and B are also incorrect as they misrepresent the behavior of the command.