How is a TLOC defined in SD-WAN?

In Cisco SD-WAN, a TLOC (Transport Locator) is a crucial component that defines how a WAN Edge router connects to the overlay network. It's a unique combination of the router's system IP address, a "link color" (which identifies the transport type, like MPLS, internet, or LTE), and the encapsulation type used (GRE or IPsec). This combination allows the vSmart controller to build the overlay topology and direct traffic efficiently. Incorrect options: A unique identifier representing a site in the SD-WAN architecture: While sites have identifiers, the TLOC specifically defines the connection point of a router within that site to the overlay, not the site itself. Specifies a Cisco SD-WAN overlay in a multitenant vSMART deployment: This describes a tenant or overlay network, not the fundamental TLOC concept. A group of QoS policies applied to a WAN Edge router: QoS policies are applied to interfaces or traffic classes, not directly to the TLOC definition itself.