Data plane, Control plane, Management plane

Forwarding Plane - Moves packets from input to output

Control Plane - Determines how packets should be forwarded

Management Plane - Methods of configuring the control plane (CLI, SNMP, etc.)

SDN

Traditional Networking

SDN

APIC - Cisco SDN solution for Data Centers

DNAC - Cisco SDN solution for Enterprise

SD-WAN

Underlay network is transparent

SD-Access

instead of manually configuring the ACLs we have our SGACLs via SD-Access solution

IBN

LinkedIn article

Characteristics of IBN

Benefits of IBN

IBN vs. SDN

Importance of intent-based networking

Northbound and Southbound APIs

• Northbound interfaces go towards the core of the data center or towards the Internet-facing egress of the network.

• Southbound goes towards the end-users/servers/VMs.