From a customer's perspective, how does a VPRN service operate?

A Virtual Private Routed Network (VPRN) is a Layer 3 VPN service. From the customer's perspective, the service provider's network functions as a single, private IP router. The customer's sites connect to this virtual router, allowing them to exchange IP traffic as if they were part of a single, private routed network. The underlying complexity of the provider's MPLS backbone is completely transparent to the customer, who only needs to manage the IP routing between their Customer Edge (CE) devices and the provider's network.

A. All sites are connected to a single wire. This describes a shared medium or bus topology, which is a Layer 1/2 concept and does not accurately represent a routed IP network like a VPRN.
B. All sites are connected to a switched network. This describes a Layer 2 VPN service, such as a Virtual Private LAN Service (VPLS), where all sites share the same broadcast domain, not a Layer 3 VPRN.
D. All sites are connected to the Internet. A VPRN provides private, isolated connectivity between a customer's sites. It is distinct from the public Internet, although access to the Internet can be provided as a separate feature.

1. Nokia 7750 SR OS Services Guide, Release 22.10.R1, Document Part Number: 3HE 18146 AAAD TQZZA, Edition 01.

Section: Virtual Private Routed Network (VPRN) Services: "A VPRN is a Layer 3 virtual private network (VPN). A VPRN emulates a private IP routing domain for a customer... From the customer’s perspective, the VPRN is a private routed network." This statement directly confirms that the customer views the service as a routed network.

Section: VPRN Service Overview: "The PE routers that attach to the VPRN are aware of only the routes that lead to the other sites that are in the same VPRN. Each VPRN has its own routing table." This reinforces the concept of a private, isolated routed domain.