In a Cisco SD-Access wireless architecture, which device manages endpoint ID to edge node bindings?

In a Cisco Software-Defined Access (SD-Access) architecture, the fabric control plane node is responsible for hosting and managing the endpoint-to-location mapping database. This database tracks the relationship between an endpoint's identifier (EID), such as its IP address, and its current location, which is the Routing Locator (RLOC) of the fabric edge node it is connected to. The control plane node uses the Locator/ID Separation Protocol (LISP) Map-Server and Map-Resolver functionalities to maintain this dynamic database, allowing other fabric devices to query it to find the location of any endpoint within the fabric.

B. fabric edge node: The fabric edge node registers its locally connected endpoints with the control plane node but does not manage the entire fabric-wide binding database.

C. fabric border node: The fabric border node is responsible for connecting the SD-Access fabric to external networks and does not manage internal endpoint location mappings.

D. fabric wireless controller: The fabric wireless controller manages wireless client states and associations but relies on the control plane node for the authoritative EID-to-RLOC mapping service.

1. Cisco Systems

"Cisco SD-Access Solution Design Guide (CVD)

" July 2023.

Section: SD-Access Architecture and Components > Control Plane Node: "The control plane node contains the settings

protocols

and tables to provide the endpoint-to-location (EID-to-RLOC) mapping system for the SD-Access fabric... The control plane node is a specific function in the fabric that maintains a host tracking database (HTDB) to map EIDs to RLOCs."

2. Cisco Systems

"Cisco DNA Center and SD-Access for Wireless Design and Implementation Guide

" August 2023.

Section: SD-Access Wireless Architecture > Control Plane: "The control plane node is the central database for all host EID-to-RLOC mappings in the fabric. When a wireless client joins the network

the fabric edge node where the AP is connected registers the client's EID information with the control plane node."

3. Medina

A.

et al. "LISP: An Architecture for Scalable and Robust Routing." IEEE Communications Magazine

vol. 52

no. 9

2014

pp. 126-134. DOI: 10.1109/MCOM.2014.6894462

Section III. LISP ARCHITECTURE: This paper describes the fundamental LISP architecture upon which the SD-Access control plane is built

defining the role of the Map-Server and Map-Resolver in maintaining the EID-to-RLOC mapping database. The control plane node in SD-Access embodies these functions.