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Question 484

Refer to the exhibit. A Cisco data center environment is implemented with vPC. The web server replies using the SVI MAC address as the Layer 2 header instead of the HSRP MAC address on VLAN 23. This behavior causes packet drops on the Cisco Nexus 9000 Series Switches due to the vPC loop prevention mechanism. The requirement is for the vPC feature to allow N9K_1 and N9K_2 to forward traffic between the NAS server and the web server, even if the HSRP’s MAC address is not used on Layer 2 headers for VLAN 23. Which feature must be used to accomplish this goal?

    Correct Answer: D

    For the described scenario in the Cisco data center environment utilizing vPC, the feature required to allow traffic forwarding between the NAS server and web server, even when the SVI MAC address is used instead of the HSRP MAC address on VLAN 23, is the 'Peer Gateway' feature. The Peer Gateway feature allows vPC peer devices to act as a gateway for packets destined to the MAC address of the other VPC peer, preventing packet drops caused by the vPC loop avoidance feature in situations like the one described.

Discussion
madelesmOption: D

correct