What causes evaluation to stop in a VPM layer?

In a Visual Policy Manager (VPM) layer, evaluation halts when there is a match against the trigger specified in a rule. This behavior is designed to ensure that once a condition defined by a rule is satisfied, the processing of subsequent rules is not necessary. By stopping evaluation at the point of a match, the system optimizes performance and ensures that the matched action is executed without unnecessary additional processing.

This functionality is crucial in scenarios where multiple rules may exist, allowing the system to quickly determine the appropriate action without evaluating all possible rules. It streamlines decision-making processes in traffic management, security policies, or any filtering mechanisms established within the proxy environment.

Contextually, the other factors, such as timeouts, order of rules, and the number of active layers, do not halt evaluation in the same definitive manner as a match against a trigger. Rather, they can influence the evaluation process or its efficiency, but they do not serve as a direct stopping condition like a rule match does.