To reserve the appliance’s accelerated bandwidth for a particular group of systems, such as remote backup servers, you can install the appliance on a branch network that includes only those systems. This is shown in the following figure.
Figure 1. Inline Mode, Accelerating Selected Systems Only
SD-WAN traffic shaping relies on controlling the entire link, so traffic shaping is not effective with this topology, because the appliance sees only a portion of link traffic. Latency control is up to the bottleneck gateway, and interactive responsiveness can suffer.