QuestionQ117

Control, Data, Management Plane, and Operational Design

A software-defined network is defined as a network with an API that enables applications to understand and respond to the network’s state in near real time. A vendor is developing an SDN solution that exposes an API directly to the RIB and potentially to the forwarding engine. The solution enables off-box processes to interact with the routing table in the same manner as a distributed routing process. Which SDN framework model does the solution use?

  • A replace
  • B augmented
  • C hybrid
  • D distributed
Explanation

The hybrid SDN model retains distributed routing processes for core topology and forwarding decisions while exposing the RIB, and potentially the forwarding engine, to off-box processes. Those remote processes can operate like additional routing processes by reading, redistributing, and installing routing information through the RIB.

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