Discover the critical function of border nodes in Cisco SD-Access fabric architecture. Learn how they enable seamless connectivity between the fabric and external networks.
Table of Contents
Question
In a Cisco SD-Access fabric, which node facilitates connectivity between the fabric and networks external to the fabric?
A. intermediate
B. edge
C. control plane
D. border
Answer
D. border
Explanation
In a Cisco SD-Access fabric, the border node facilitates connectivity between the fabric and networks external to the fabric. Border nodes are responsible for handling traffic entering and leaving the fabric, acting as the gateway between the SD-Access domain and the outside world.
Key functions of border nodes include:
- Connecting the fabric to external Layer 3 domains, such as the Internet, data center, or campus networks.
- Performing IP address translation (NAT) and VRF-lite to enable communication between the fabric and external networks.
- Enforcing security policies and access control lists (ACLs) for traffic entering and leaving the fabric.
- Redistributing routes between the fabric and external routing protocols, such as OSPF or BGP.
By deploying border nodes, organizations can ensure seamless integration of their SD-Access fabric with existing network infrastructure, enabling end-to-end connectivity and policy enforcement.
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