| 摘要 |
A method is disclosed for the collection of performance metrics by establishing service operations administration and maintenance (OAM) sessions between an actuator and a plurality of reflectors in a communication network. Test packets from an actuator simultaneously reach a plurality of reflectors along a test path. Each single test packet results into a plurality of test results, one per reflector, with quasi-synchronous performance metrics to sectionalize a network and more efficiently isolate fault or performance problems without the need for additional test packets to isolate the issue. Another method is disclosed wherein an actuator generates and transmits a plurality of simultaneous test packets, one per NID device, resulting into a plurality of test results, one per reflector, with quasi-synchronous performance metrics to sectionalize a network and more efficiently isolate fault or performance problems without the need for additional test packets to isolate the issue. |
| 主权项 |
1. A method of establishing service operations administration and maintenance (OAM) sessions in a communication network, the method comprising:
monitoring, by a first reflector and a second reflector, any test packets transmitted by an actuator which contain a predetermined identifier, the predetermined identifier comprising a layer 2 actuator address, the first reflector being located downstream along a test path with respect to the actuator, the second reflector being located downstream along a test path with respect to the first reflector; transmitting by the actuator a first test packet and a second test packet, the first test packet configured with the predetermined identifier and a first unique reflector identifier, the second test packet configured with the predetermined identifier and a second unique reflector identifier; generating, by the first reflector, a first test reply to the actuator, the first test reply transmitted back to the actuator incorporating the first unique reflector identifier; generating, by the second reflector, a second test reply to the actuator, the second test reply transmitted back to the actuator incorporating the second unique reflector identifier; and using the first test reply and the second test reply to determine network performance metrics, wherein the first and second unique reflector identifiers are defined by the first reflector and the second reflector via a signaling exchange including a Two-Way Active Measurement Protocol (TWAMP) control plane or via a configuration method, including at least one of Command Line Interface (CLP, web-based configuration, and Extensible Markup Language (XML): the actuator generating a plurality of TWAMP requests, the plurality of TWAMP requests encapsulated as UDP packets, each UDP packet having a port number, the port number of each of the plurality of TWAMP requests being set to a unique pre-agreed value for the first reflector and the second reflector, the actuator transmitting the plurality of TWAMP requests in order to minimize the delay between the plurality of TWAMP requests. |
