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AWS Certified Advanced Networking - Specialty · AWS
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Your virtual interface on Direct Connect can go down for multiple reasons: Physical connection is down or flapping OSI layer 2 configuration issues Border Gateway Protocol (BGP) configuration issues Bidirectional Forwarding Detection (BFD) configuration issues https://repost.aws/knowledge-center/direct-connect-down-virtual-interface
The ARP entry is for private VIF's VLAN interface at AWS, not is for on-premise router. Therefore, the connection at layer 2 cannot be considered normal. Option C is a layer2 problem.
The ARP entry is for private VIF's VLAN interface at AWS, not is for on-premise router. Therefore, the connection at layer 2 cannot be considered normal. Option C is a layer2 problem.