Tag :: copp

The Configurable CPU queue resources feature allows for the customization of the default CPU queue thresholds (Tail-drop and FADT) to meet specific operational requirements. This enables the users to customize control-plane queues to reflect their specific traffic patterns, such as allocating more queuing resources to heavily utilized queues like BGP or Ospf.

Control Plane Policing (CoPP) classifies control plane traffic into different classes (e.g., IGMP, LLDP, PTP, OSPF) and applies rate limiting per class using queues shaping. However, when multiple flows within the same CoPP class share a single queue, a single high-rate flow can consume the entire allocated bandwidth for that class, starving other legitimate flows.

Control Plane Policing (CoPP) classifies control plane traffic into protocol classes (e.g., IGMP, LLDP, BGP) and applies rate limiting per class using queue shaping. On supported platforms, all control plane traffic for a given protocol class is directed to a single queue regardless of the ingress port. As a result, a high-rate flow from a single port or host can consume the entire bandwidth allocated to that class, starving legitimate control plane traffic arriving on other ports.