<Dl> <Dt> Provider edge device (PE) </Dt> </Dl> <Dt> Provider edge device (PE) </Dt> <P> A PE is a device, or set of devices, at the edge of the provider network which connects to customer networks through CE devices and presents the provider's view of the customer site . PEs are aware of the VPNs that connect through them, and maintain VPN state . </P> <Dl> <Dt> Provider device (P) </Dt> </Dl>

Give some examples of the usage of vpn