Explain technically in detail BNG (Broadband Network Gateway)

The technical details of the Broadband Network Gateway (BNG).

1. What is a BNG?
   • A Broadband Network Gateway (BNG) serves as the access point for subscribers connecting to a broadband network.
   • Think of it as a more robust version of your home router, providing internet access to a larger pool of subscribers.
2. Functions of a BNG:
   • Subscriber Management: BNGs handle subscriber authentication, authorization, and accounting (AAA) functions.
   • Control Plane and User Plane Separation (CUPS): Modern BNGs adopt a cloud-native architecture, separating the control plane (responsible for management and signaling) from the user plane (handling data traffic).
   • Service Composition and Delivery: BNGs enable the composition, delivery, and management of services on-demand, wherever customers are located.
3. Benefits of Cloud-Native BNG (cnBNG):
   • Agility: The cloud-native control plane allows rapid service introduction through automation.
4. Cisco’s Cloud Native BNG (cnBNG):
   • Cisco’s cnBNG reimagines the BNG architecture by embracing cloud-native principles.