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Chip-level method and device for realizing Ethernet OAM frame delay measurement

A technology of delay measurement and Ethernet, which is applied in the field of network communication and can solve problems such as inaccurate ETH-DM

Active Publication Date: 2013-03-20
SUZHOU CENTEC COMM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This brings about such a problem. For the inward MEP, ETH-DM does not completely and accurately perform DM-related detection according to the monitoring and management scope stipulated in the agreement, and skips the forwarding module, that is, the Relay Entity. This will cause ETH-DM to DM's inaccuracy

Method used

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  • Chip-level method and device for realizing Ethernet OAM frame delay measurement
  • Chip-level method and device for realizing Ethernet OAM frame delay measurement
  • Chip-level method and device for realizing Ethernet OAM frame delay measurement

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Embodiment Construction

[0047] The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention.

[0048] Such as Figure 1A As shown, for the outgoing MEP in the maintenance domain, that is, the outgoing maintenance endpoint, since the scope of monitoring is port A of the bridge Bridge and its left link, when the outgoing MEP is configured on the port of the maintenance domain to perform When receiving or sending DM messages, the delay measurement process is as follows:

[0049]When the outbound MEP is configured on the inbound port and receives the DM message in the OAM, the DM message directly obtains the time information from the MAC address of the inbound port, records it into the out-of-band information, and then parses the message in the inbound OAM processing module. After the text is an OAM DM message, the DM message is sent to the OAM processing engine through the queue p...

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Abstract

The invention discloses a chip-level method and device for realizing Ethernet OAM (Operation, Administration and Maintenance) frame delay measurement. A clock module is arranged in a chip, and an in-direction OAM processing module and an out-direction OAM processing module are respectively arranged at an in-direction port and an out-direction port of network equipment. The clock module regularly sends time stamps to MAC (Multi-Access Computer) of the network equipment, the in-direction OAM processing module and the out-direction OAM processing module. When an Up MEP (Maintenance End Point) is mounted on the out-direction port to receive a DM (Data Management) message, clock information is obtained from the out-direction OAM processing module. When the Up MEP is mounted on the in-direction port to send the DM message, the clock information is obtained from the in-direction OAM processing module. Therefore, when the frame delay of the inward MEP is measured, the delay on a forward module is also brought into the measurement range, so that the measurement of the inward MEP frame delay is more precise and more conforms to the protocol requirements.

Description

technical field [0001] The invention relates to the field of network communication, in particular to a method and a device for realizing frame delay measurement of an inward MEP (Up MEP) in Ethernet OAM at the chip level. Background technique [0002] Ethernet OAM (Operations, Administration, and Maintenance) technology was originally proposed by IEEE 802.1ag, which is used for monitoring, fault location, and error reporting of service channels at various levels in Ethernet. Later, it was expanded by ITU-Y.1731, adding error management and performance detection, among which the most important is ETH-DM (Ethernet Delay Measurement function), which is the mechanism and function of frame delay measurement. The protocol stipulates that MEPs (maintenance endpoints) at both ends of the maintenance domain record the time information when receiving and sending, and hand it over to one end to calculate the delay, so as to obtain the delay between the two MEPs. [0003] In order to m...

Claims

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Application Information

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IPC IPC(8): H04L12/26H04L12/24
Inventor 廖继平单哲
Owner SUZHOU CENTEC COMM CO LTD
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