The following parameters define the performance of a network service, a virtualized network function (VNF), and the component functions of a VNF:
Sessions—Maximum number of sessions allowed for one instance of the service.
Bandwidth (Mbps or Gbps)—Data rate for the function or service.
Latency (ms or ns)—Time taken by a packet to traverse the function or service.
Licence cost (USD)—Cost of the function or service.
Vendors provide specified values for these parameters for a VNF and for each allowed combination of components in the VNF (internal service chain). You can view the specified values in the Vendor catalog.
Network Service Designer evaluates the aggregate performance of the design against the goals in the request and displays the information in the Goals pane.