An engineer is deploying a software-defined fabric architecture across an enterprise network. Which two operational functions are handled exclusively by the overlay network rather than the underlying physical network? (Choose two.)
- Encapsulating virtual tenant traffic inside VXLAN packets at the fabric edgeCevap
- BEstablishing physical IP reachability between fabric nodes using an IGP like OSPF or IS-IS
- Maintaining the mapping database that resolves Endpoint Identifiers (EIDs) to Routing Locators (RLOCs)Cevap
- DForwarding packets across core fabric switches based on the outer destination IP header
- EConfiguring maximum transmission unit (MTU) sizes to accommodate encapsulation overhead on physical interfaces
Cevap
Encapsulating virtual tenant traffic inside VXLAN packets at the fabric edge and maintaining the mapping database that resolves Endpoint Identifiers (EIDs) to Routing Locators (RLOCs) are the two functions operating exclusively within the overlay network.
In software-defined network fabrics, the overlay network is responsible for creating virtual networks on top of physical infrastructure. Encapsulating traffic using VXLAN at fabric edge nodes forms the overlay data plane, while maintaining the LISP mapping database (EID to RLOC) forms the overlay control plane.
Adım Adım Çözüm
Anahtar Kavram
Overlay vs. Underlay Roles in Software-Defined Networking