Performance monitoring of frame transmission in data network oam protocols

A performance and network technology, applied in the field of data communication, can solve problems such as increasing the cost of monitoring networks

Inactive Publication Date: 2007-12-05
ALCATEL LUCENT SAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] However, performance measurement using overlay equip

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  • Performance monitoring of frame transmission in data network oam protocols
  • Performance monitoring of frame transmission in data network oam protocols
  • Performance monitoring of frame transmission in data network oam protocols

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Embodiment Construction

[0024] The present invention is best understood with reference to Figures 1-8 of the drawings, like numerals being used for like elements in the various drawings.

[0025] Figure 1 shows a very simplified diagram of an environment in which the invention can be implemented. Provider network 10 connects one or more locations of the customer network. In the illustrated embodiment, the customer network is shown as having four locations (shown as locations A, B, C and D respectively), each location having its own local area network 12 . Edge nodes 14 provide connectivity between local area network 12 and provider nodes 16 of provider network 10 . Thus, provider network 10 connects various local area networks 12 to form a wide area network.

[0026] In an actual implementation, provider network 10 may support multiple customers, and it may use additional third-party provider networks to provide the necessary connectivity.

[0027] Currently, the situation as described above provi...

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Abstract

Performance measurements for a network, such as delay, delay variation, and loss, are performed over layer-2. A PM frame is sent from a source MEP (Maintenance End Point) to a destination MEP. The PM frame is timestamped immediately prior to transmission, and the local clock at the destination MEP is noted immediately upon arrival. MIPs (Maintenance Intermediate Points) may also time stamp the PM frame. Preferably, each PM frame has an interval (session) identifier and a sequence number within the interval. The PM frames are received by and sent by PM modules within the nodes of the network. The PM modules include a Sender function for sending an interval of one or more PM frames and a Receiver function for receiving PM frames and computing measurements.

Description

[0001] Cross References to Related Applications [0002] This application asserts a co-pending U.S. Interim Protocol titled "PERFORMANCE MONITORING OF FRAME TRANSMISSION IN DATA NETWORKOAM PROTOCOLS," filed June 17, 2005. Priority on the filing date of Application No. 60 / 691,493. technical field [0003] The present invention relates generally to data communications, and more particularly to performance monitoring of frame transmissions in data networks. Background technique [0004] The need for network performance monitoring in data networks is growing. Until recently, this type of network performance monitoring was used primarily for network troubleshooting (network management, status and alarming) in addition to conventional connectivity testing methods. Currently, SLA (Service Level Agreement) inspection, billing, and network security (detection of flooding attacks, etc.) also require network performance monitoring. As a result, the status of performance monitoring i...

Claims

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Application Information

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IPC IPC(8): H04L12/26H04L29/06H04L12/24
Inventor 杰勒德・达姆
Owner ALCATEL LUCENT SAS
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