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Question 22

With the given topology, the customer has ArubaOS-CX 6300 switches and Aruba Gateway in use.

What is required for the client traffic to be tunneled as per best practice between the connected switch port and the Aruba Gateway? (Choose two.)

The ArubaOS-CX switch and Aruba gateway should be EBGP peers.

IP Protocol 6 should not be blocked on the datapath.

Change the default MTU on the data-path between the switch and gateway.

IP Protocol 47 should not be blocked in the data-path.

The ArubaOS-CX switch and Aruba gateway should have an end-to-end MacSec connection.

Correct Answer: C, D

To properly tunnel client traffic between the ArubaOS-CX switch and the Aruba Gateway, it is important to not block IP Protocol 47 (GRE) on the datapath as GRE tunnels use this protocol. Additionally, GRE-encapsulated frames may exceed the standard MTU size, so adjusting the default MTU on the data-path between the switch and gateway is necessary to ensure compatibility and prevent fragmentation of these frames.

Discussion

Spy178Options: CD

C&D - Page 591 or ASTS Manual.

K_HOPEOptions: CD

C, D - GRE (protocol 47) should be allowed and GRE- encapsulated frames can exceed the standard MTU.