As shown in the diagram, when DCs are interconnected via VLAN Hand-off, which of the following describes the error?

Question

Options

• ADCI-GW requires VXLAN support
• BDCI-GW does not learn the routes between the service host and the network
• CTransmission of common VLAN packets between the Fabric-GW and the DCI-GW
• DThe DCI network only passes the underlay route for the DCI-GW

• A
  5% (3)
• B
  75% (42)
• C
  4% (2)
• D
  16% (9)

Explanation

Resolution: Option B is wrong because there are no routes on DCI-GW for hosts and networks within the DCI, it only has routes for the inter-DCI GW to communicate. For other options, please refer to the following networking instructions. ?Networking Description: Add VXLAN-enabled devices as DCI-GW in the data center. BGP EVPN is deployed between DCI-GW to establish VXLAN tunnels, and BGP EVPN is deployed within Fabric, Fabric-GW As the endpoint of the VXLAN in the fabric, the common VLAN between the Fabric-GW and the DCI-GW is interconnected. Fabric-GW and DCI-GW are configured with VLAN access to VXLAN respectively. Cross-data center packets are decapsulated by Fabric-GW and turned into ordinary Ethernet packets, which are received by DCI-GW and then renewed The VXLAN encapsulation enters the VXLAN tunnel of the DCI and is sent to the peer data center. During L2 communication, Layer 2 broadcast domains between different data centers are opened, and different Layer 2 DNIs are mapped to different DCI VNIs through different VLANs. In L3 interconnection, the Logic Router of the VPC that requires Layer 3 interconnection is passed through DCI on the Fabric- GW of each data center The VXLAN tunnel is directly connected to Layer 2 and an eBGPIPv4 private neighbor is established to pass VPC private routes across DCs VLANs are then mapped to different DCI VNIs for isolation, ensuring communication and isolation between VMs across the data center.

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