Which three limitations or requirements do MP-BGP-based EVPN addresses have compared to the initial IETF VXLAN standard (RFC 7348)? (Choose three.)
Click on the arrows to vote for the correct answer
A. B. C. D. E.BDE.
MP-BGP-based Ethernet Virtual Private Network (E VPN) is an extension to the initial IETF Virtual Extensible LAN (VXLAN) standard (RFC 7348). E VPN addresses have a few limitations or requirements when compared to the initial VXLAN standard. Let's discuss each option in detail to understand the differences between them:
A. Requirement to disable multicast for underlay forwarding: In the initial VXLAN standard, multicast was used for underlay forwarding, which caused scalability issues in large-scale deployments. In contrast, E VPN addresses require disabling multicast for underlay forwarding, which enables efficient forwarding and reduces overhead. As a result, E VPN addresses eliminate the need for multicast in the underlay, making the network simpler and more scalable.
B. Network flooding through protocol-based host MAC/IP route distribution and ARP suppression on the local VTEPs: E VPN addresses use protocol-based host MAC/IP route distribution and ARP suppression on the local Virtual Tunnel Endpoints (VTEPs), which reduces unnecessary traffic and optimizes network bandwidth. In contrast, the initial VXLAN standard used data-driven flood-and-learn behavior, which could lead to scalability issues in large-scale deployments.
C. Active-passive multihoming at Layer 2: E VPN addresses support active-passive multihoming at Layer 2, which enables fast convergence and provides redundancy in case of a link failure. In contrast, the initial VXLAN standard did not support active-passive multihoming, which could cause network downtime and disrupt service availability.
D. Scalability limitations due to data-driven flood-and-learn behavior: As mentioned earlier, the initial VXLAN standard used data-driven flood-and-learn behavior, which could lead to scalability issues in large-scale deployments. E VPN addresses eliminate these scalability limitations by using protocol-based host MAC/IP route distribution and ARP suppression on the local VTEPs.
E. Control-plane learning of end-host Layer 2 and Layer 3 reachability information, which provides integrated bridging and routing in VXLAN overlay networks: E VPN addresses provide control-plane learning of end-host Layer 2 and Layer 3 reachability information, which enables integrated bridging and routing in VXLAN overlay networks. In contrast, the initial VXLAN standard did not provide control-plane learning, which required configuring separate routing and bridging protocols.
In summary, E VPN addresses have several advantages over the initial VXLAN standard, including support for active-passive multihoming, efficient forwarding, protocol-based host MAC/IP route distribution, and control-plane learning of end-host Layer 2 and Layer 3 reachability information.