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350-501 · Question #571

Why should a network architect implement BGP EVPN in the network?

The correct answer is D. It allows MAC and IP information to be shared over the VPN, enabling Layer 2 and Layer 3 traffic. Network architects should implement BGP EVPN because it provides a unified control plane for distributing both Layer 2 (MAC) and Layer 3 (IP) host reachability information across the network. This enables efficient forwarding and routing for both types of traffic within and…

Architecture

Question

Why should a network architect implement BGP EVPN in the network?

Options

  • AIt allows traffic to traverse the service provider core using only Layer 2 without a Layer 3
  • BIt allows VMs to remain stationary within a server to prevent potential application degradation.
  • CIt allows the network to route traffic correctly without knowing the location of the end host.
  • DIt allows MAC and IP information to be shared over the VPN, enabling Layer 2 and Layer 3 traffic.

How the community answered

(39 responses)
  • A
    3% (1)
  • B
    8% (3)
  • C
    13% (5)
  • D
    77% (30)

Why each option

Network architects should implement BGP EVPN because it provides a unified control plane for distributing both Layer 2 (MAC) and Layer 3 (IP) host reachability information across the network. This enables efficient forwarding and routing for both types of traffic within and between virtual networks.

AIt allows traffic to traverse the service provider core using only Layer 2 without a Layer 3

EVPN provides Layer 2 VPN services over a Layer 3 infrastructure (like MPLS or IP core), it does not allow traffic to traverse the core using only Layer 2 without any underlying Layer 3.

BIt allows VMs to remain stationary within a server to prevent potential application degradation.

EVPN primarily enables efficient VM mobility by allowing MAC and IP addresses to be moved between physical locations without requiring IP address changes, which is beneficial for application performance during migrations. It does not keep VMs stationary.

CIt allows the network to route traffic correctly without knowing the location of the end host.

EVPN's core function is to allow the network to know the location of end hosts (via distributed MAC and IP routes) to correctly forward and route traffic to them, ensuring efficient reachability.

DIt allows MAC and IP information to be shared over the VPN, enabling Layer 2 and Layer 3 traffic.Correct

Concept tested: BGP EVPN benefits and functionality

Source: https://www.cisco.com/c/en/us/solutions/data-center-virtualization/application-centric-infrastructure/white-paper-c11-740755.html

Topics

#BGP EVPN#Network Architecture#L2/L3 VPN#Control Plane

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