US 12,665,849 B2Granted

Systems and methods for optimized protocol aware dynamic control plane policing

AssigneeDell Products L.P.

InventorsVenkatesan Mahalingam, Senthil Kumar Ganesan, Vinoth Kumar Arumugam, Ashok Daparthi

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Abstract

Control plane policing (CoPP) is a mechanism to police incoming traffic to the control plane for control plane protection and routing stability. Currently, networking switches are statically configured for CoPP limits in hardware/firmware. Such an approach of using a static CoPP limit does not work well in dynamic scenarios where one protocol load could be more than the other. The present patent document discloses embodiments of dynamic CoPP limit derivation. CoPP limits are initially estimated based on protocol configuration and are dynamically updated based on application load. A congestion notification may be sent to a sender to limit a transmission rate. Use of dynamic CoPP limit embodiments have advantages of faster protocol convergence, efficient slow packet processing notification to peer, and effective CoPP drop setting based on application load.

Claims20

Dependent claims

An information handling system comprising:

a data plane comprising a network processing unit (NPU) that is communicatively coupled to one or more physical ports;
and
a control plane that controls the data plane for traffic routing and packet forwarding, the control plane comprising a monitoring module to monitor one or more applications operating in the control plane, the monitoring module comprising:
a configuration monitoring module that tracks one or more configurations for each protocol of a set of one or more protocols operating on an information handling system;
a resource monitoring module that monitors, for each protocol of the set of one or more protocols, one or more resources of the information handling system regarding resource usage related to the protocol;
and
a control plane policing (CoPP) limit calculator communicatively coupled to the configuration monitoring module and to the resource monitoring module, the CoPP limit calculator, for each protocol of the set of one or more protocols:
determines an initial value of a CoPP limit using one or more protocol-related configurations related to one or more conditions associated with the information handling system's deployment;
and
dynamically updates the CoPP limit using at least one or more values related to the resource usage.

7 more elements

A processor-implemented method for setting control plane policing, the method comprising:

for an information handling system, which comprises:
a data plane comprising a network processing unit (NPU) that is communicatively coupled to one or more physical ports;
and
a control plane that controls the data plane for traffic routing and packet forwarding, the control plane comprising a monitoring module to monitor one or more applications operating in the control plane, the monitoring module comprising:
a configuration monitoring module that tracks one or more configurations for a protocol operating on the information handling system;
a resource monitoring module that monitors one or more resources of the information handling system regarding resource usage related to the protocol;
and
a control plane policing (CoPP) limit calculator communicatively coupled to the configuration monitoring module and to the resource monitoring module, the CoPP limit calculator causing steps to be performed comprising:
determining an initial value of a CoPP limit using one or more protocol-related configurations;
and
dynamically updating the CoPP limit using at least one or more values related to the resource usage.

8 more elements

A non-transitory information-handling-system-readable medium or media comprising one or more sequences of instructions for an information handling system, which comprises:

a data plane comprising a network processing unit (NPU) that is communicatively coupled to one or more physical ports;
and
a control plane that controls the data plane for traffic routing and packet forwarding, the control plane comprising a monitoring module to monitor one or more applications operating in the control plane, the monitoring module comprising:
a configuration monitoring module that tracks one or more configurations for a protocol operating on the information handling system;
and
a resource monitoring module that monitors one or more resources of the information handling system regarding resource usage related to the protocol,
the one or more sequences of instructions which, when executed by at least one processor, causes a control plane policing (CoPP) limit calculator communicatively coupled to the configuration monitoring module and to the resource monitoring module, to cause steps to be performed comprising:
determining an initial value of a CoPP limit using one or more protocol-related configurations;
and
dynamically updating the CoPP limit using at least one or more values related to the resource usage.

7 more elements

Dependencies are inferred from the claim text.