The scalability and performance are driven by the number of entities for which congestion monitoring is enabled on each line card.
EPS congestion monitoring is supported only on Ethernet ports.
If EPS is applied under Vports, the congestion monitoring mechanism does not provide any indication of whether the physical port was congested. For example, if the physical port is congested, it distributes less bandwidth to its Vports than it otherwise would. Therefore, the Vport offered load appears as less than it actually is, giving an impression of no congestion.
Changing EPS parameters dynamically does not automatically update congestion monitoring statistics. Therefore, it is recommended that the congestion monitoring statistics are cleared after changing the values of EPS parameters.
If EPS is configured under a LAG, the failure of the active link causes an interruption in statistics collection.