What is the function of a fabric border node in a Cisco SD-Access environment?
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In a Cisco Software-Defined Access (SD-Access) environment, the fabric border node (FBN) is a critical component that plays an important role in connecting the SD-Access fabric to other external networks or fabrics. The FBN acts as a gateway between the SD-Access fabric and the outside world, providing secure and controlled access to resources and services located outside of the fabric.
Specifically, the FBN performs the following functions:
Connects the SD-Access fabric to other fabrics or external Layer 3 networks: The FBN acts as a bridge between the SD-Access fabric and external networks, providing connectivity and communication between the two environments. This allows for seamless access to resources and services that are located outside of the SD-Access fabric.
Provides security and policy enforcement: The FBN is responsible for enforcing security policies and access controls for traffic that flows between the SD-Access fabric and external networks. This includes applying firewall rules, access lists, and other security measures to ensure that traffic is secure and compliant with corporate policies.
Handles traffic flow information: The FBN collects traffic flow information from endpoints within the SD-Access fabric and sends it to the Cisco DNA Center for analysis and optimization. This allows network administrators to monitor and manage traffic flows within the fabric and make informed decisions about network performance and capacity.
In summary, the fabric border node in a Cisco SD-Access environment is a critical component that connects the fabric to external networks and provides security, policy enforcement, and traffic flow management. Its role is to ensure that traffic flows securely and efficiently between the SD-Access fabric and external networks, while also providing visibility and control over network traffic.