Which two routing-instance types are used for non-VPN-related applications? (Choose two.)
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A. B. C. D.AC
The two routing-instance types that are used for non- VPN related applications are:
A. Virtual-router B. Forwarding
A. Virtual-router:
A virtual-router routing-instance is used to create a logical routing instance within a physical router. This routing-instance type is typically used to create a logical separation of routing tables that provide different levels of network access or to create multiple virtual routers within a single physical router. This type of routing-instance allows multiple independent routing tables to exist within a single router, which can be used to support different routing policies and configurations for different types of traffic.
B. Forwarding:
A forwarding routing-instance is used to isolate the forwarding plane of a router from the control plane. This routing-instance type is typically used in high-performance environments where the forwarding plane needs to operate independently from the control plane. In a forwarding routing-instance, the forwarding plane is responsible for the actual forwarding of packets, while the control plane is responsible for generating and maintaining the routing tables that are used by the forwarding plane.
C. VRF:
A VRF (Virtual Routing and Forwarding) routing-instance is used to create a separate routing and forwarding instance within a router, which can be used to provide multiple independent routing tables for different VPNs (Virtual Private Networks). This type of routing-instance is used to isolate traffic between different VPNs and to provide different levels of network access to different VPNs.
D. VPLS:
A VPLS (Virtual Private LAN Service) routing-instance is used to create a virtual LAN (Local Area Network) that spans multiple physical locations. This type of routing-instance is typically used to provide connectivity between multiple LANs in different geographical locations, and to create a virtual LAN that appears to be a single physical LAN to the end-users.
In summary, the two routing-instance types used for non- VPN related applications are virtual-router and forwarding, while VRF and VPLS are used for VPN-related applications.