SASE UNI
The User Network Interface (UNI) is where the service provider’s network touches the customer’s network. This is typically on the provider’s router. With the SASE UNI, the touchpoint is per service and is generally a logical construct, though it might be a physical interface since the SASE UNI lies on another service, such as SD-WAN, and the underlay UNI may be provided via MPLS or another service for the physical touchpoint.
The underlay is the actual circuit from the service provider, such as MPLS, Switched Ethernet, LTE, 5G, or other circuit types. The UNI for the underlay is the handoff point from the Provider Edge (PE) to the Customer Edge (CE). This leverages the Permanent Virtual Connection (PVC), as established for the subscriber organization.
The SASE UNI is a logical point of demarcation from the overlay service, such as SD-WAN, when connecting to the customer’s SASE Edge, which may be physical or virtual. The SASE UNI provides much...
