System and method for verifying multiprotocol label switching contracts

摘要

Systems, methods, and non-transitory computer-readable storage media for verifying service contracts by measuring rates of out-of-contract traffic. The method is discussed in terms of a system implementing the method. The system determines, based on packet markings, a number of network packets that are classified as out-of-contract by a network device, wherein the packet markings indicate a classification associated with respective network packets. The packet markings can be Differentiated Services Code Point markings Moreover, the classification associated with respective network packets can include a class of service and at least one of an in-contract status and an out-of-contract status. Next, the system measures network packets sent to the network device. Finally, the system determines how the network device is configured to classify incoming packets based on the number of network packets that are classified as out-of-contract by the network device and the network packets sent to the network device.

主权项

1. A method comprising:
sending, during a measuring period, a plurality of probes from a first node in a network to a second node in the network, the plurality of probes being configured to elicit respective error responses from the second node; receiving, at the first node, the respective error responses from the second node, the respective error responses being marked by the second node with respective differentiated service code point values indicating respective classes of service and respective out-of-contract statuses; based on the respective differentiated service code point values and a table that maps each predetermined differentiated service code point value to a particular class of service and an out-of-contract status, determining, by the first node, a number of packets in the respective error responses that are classified by the second node as out-of-contract for a class of service during the measuring period; measuring a total number of probes sent to the second node during the measuring period; verifying whether the second node is configured to classify incoming packets in accordance with a service level agreement for the class of service based on the number of packets that are classified by the second node as out-of-contract for the class of service and the total number of probes sent to the second node; and based on the verification, performing one or more of configuring the second node to classify packets according to the service level agreement and/or calibrating the service level agreement.