Which control-plane protocol is used to map an endpoint to a location in a Cisco SD-Access network?
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A. B. C. D.C.
The control-plane protocol used to map an endpoint to a location in a Cisco SD-Access network is C. LISP (Locator/ID Separation Protocol).
Cisco SD-Access is a network architecture that provides end-to-end segmentation in the enterprise network using Virtual Extensible LAN (VXLAN) overlay technology. The architecture is based on a software-defined approach, with centralized control and automated policy enforcement.
To enable end-to-end segmentation, SD-Access uses a concept called Network as a Fabric, where the network fabric is created by grouping endpoints based on a common set of attributes, such as location, department, or security zone. These attributes are defined in a policy, which is pushed from the centralized controller to the network devices.
To map an endpoint to a location in the fabric, SD-Access uses LISP. LISP separates the identity of a device (its IP address) from its location (the attachment point to the network), allowing for mobility and scalability. In SD-Access, LISP is used to map the IP address of an endpoint to a Fabric ID, which identifies the network segment where the endpoint is located.
When an endpoint connects to the network, its IP address is registered with the SD-Access controller. The controller then uses LISP to map the IP address to a Fabric ID, based on the policy defined for the endpoint. The Fabric ID is then propagated to the network devices, which use it to enforce the policy and provide end-to-end segmentation.
In summary, LISP is the control-plane protocol used to map an endpoint to a location in a Cisco SD-Access network. It enables end-to-end segmentation by separating the identity of a device from its location, and mapping IP addresses to Fabric IDs based on policy.