EVPN Instance Similarity

D.

E VPN (Ethernet Virtual Private Network) is a technology used to interconnect multiple Layer 2 (L2) domains across an IP/MPLS core network. An E VPN instance is a logical entity used to represent a single L2 domain in the E VPN network. It provides a way to isolate traffic between different L2 domains and enables efficient forwarding of multicast traffic across the network.

Out of the given options, the component that is similar to an E VPN instance is VRF (Virtual Routing and Forwarding). VRF is a technology used to create multiple virtual routing tables within a single physical router. Each VRF has its own set of routes, forwarding tables, and interfaces. It enables multiple virtual networks to be created on a single physical network infrastructure, allowing each network to be isolated and independently managed.

Similarly, an E VPN instance also provides a way to create multiple virtual L2 networks over a single physical network infrastructure. Each E VPN instance is associated with a unique identifier called E VPN instance ID. It enables different L2 domains to be isolated and independently managed, similar to VRF.

The other options, router distinguisher, MPLS label, and IGP router ID, are not similar to an E VPN instance.

• Router distinguisher is a unique identifier used to distinguish between different instances of a BGP/MPLS VPN on a single PE router.
• MPLS label is used to identify the forwarding path for packets in an MPLS network.
• IGP router ID is a unique identifier assigned to a router in an Interior Gateway Protocol (IGP) network. It is used to identify the router within the network.

Therefore, the correct answer to the question is D. VRF.