350-401 Question #781: Real Exam Question with Answer & Explanation

Question

In a Cisco SD-Access wireless environment, which device is responsible for hosting the anycast gateway?

Options

• Afusion router
• Bcontrol plane node
• Cfabric border node
• Dfabric edge node

Explanation

SD-Access Anycast Gateway Explanation

In Cisco SD-Access, the fabric edge node hosts the anycast gateway because it is the point where wireless clients (via embedded wireless controllers or connected access points) first attach to the fabric, making it the logical place to provide default gateway services using a shared virtual IP/MAC address across all edge nodes. The fusion router is incorrect because it serves as the handoff point between the SD-Access fabric and external networks (like shared services or the internet), not as a client-facing gateway. The control plane node is wrong because it runs LISP to handle endpoint registration and location mapping - it's a directory service, not a data-plane gateway. The fabric border node is incorrect because it connects the SD-Access fabric to external Layer 3 networks or other domains, not to end clients directly.

💡 Memory Tip: Think of the word "edge" - fabric edge nodes sit at the edge of the fabric closest to end users/clients, so they naturally host the gateway those clients use. If clients are "at the edge," their gateway must be there too.

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