What software-defined architecture plane assists network devices with making packet-forwarding decisions by providing Layer 2 reachability and Layer 3 routing information?
The control plane is the part of a network device or architecture that builds the information used for forwarding decisions. Routing protocols, Layer 2 control protocols, neighbor discovery, ARP processing, and topology calculations all live conceptually in the control plane. The data plane then uses the resulting tables to forward traffic at speed. In software-defined architecture, this distinction becomes even sharper because the controller can centralize or influence control-plane decisions while the devices still forward packets. Cisco CCNA 200-301 v1.1 expects candidates to separate control, data, and management-plane functions. The data plane moves user packets. The management plane handles administrative access and configuration. A policy plane is not the standard answer for Layer 2 reachability and Layer 3 routing information. The plane that assists devices with making packet-forwarding decisions by supplying reachability and route information is the control plane.
Contribute your Thoughts:
Chosen Answer:
This is a voting comment (?). You can switch to a simple comment. It is better to Upvote an existing comment if you don't have anything to add.
Submit