View the round-trip time (RTT). The remote networks RTT graph shows the average RTT trend over the IPsec tunnel originating from an remote network to its Prisma Access IPSec termination node. RTT, expressed in milliseconds, measures the time taken to initiate a network request from an originating source and receive the corresponding network response from the target destination. RTT values can range from tens of milliseconds to hundreds of milliseconds, with higher RTT values indicating link degradation conditions resulting in degraded application experience for remote network users. The RTT metric depends on factors such as propagation delay, queuing delay, encoding delay, processing delay, and so on, of which the propagation delay is generally considered the most significant. Depending on the connectivity service offered by a service provider to your branch locations, the propagation delay reflects delays in the path, very often the Internet, from your branches to Prisma Access.

You can use the data in this graph to learn about RN tunnel connectivity performance and the RTT metric variability over time. When you view this data over a period of time, you may notice established patterns that can be flagged as normal or anomalous, therefore requiring further investigation and possible remediation.