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Loopback detecting method for PPP package interface

A loopback detection and interface technology, applied in digital transmission systems, electrical components, transmission systems, etc.

Inactive Publication Date: 2008-07-16
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the MLPPP (MultilinkPPP, Multilink Point-to-Point Protocol) interface, the PPP protocol must be used, so using the specified interface ping for loopback detection can only use PPP encapsulation

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  • Loopback detecting method for PPP package interface

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Embodiment Construction

[0025] A loopback detection method of a PPP encapsulation interface, comprising the following steps:

[0026] 1) Ping the specified POS outbound interface, which supports PPP encapsulation. The ping message is sent out from this POS interface. The source IP and destination IP of the packet are the IP addresses of the interface.

[0027] 2) Add a mechanism to make the POS interface UP during loopback detection. Under normal circumstances, the PPP encapsulation of the POS interface requires a series of processes of the PPP protocol suite, including LCP, PAP / CHAP authentication, and IPCP, to pass the negotiation, and the interface can be up. Only after the interface is up can the ping message be sent from the POS interface. . Generally, when the POS interface performs self-loop, the request packet will carry a magic number for self-loop detection during LCP negotiation, so the LCP negotiation fails, and the POS interface cannot be brought up. In this embodiment, an enable loo...

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Abstract

A PPP package interface loop back detection method includes 1, PPP supporting package interface transmitting ping message, increasing enabled loop back detection command in interface, to make interface self loop UP; 2, after completing ping loop back detection, sending enabled loop back detection command, thereby unaffecting interface original configuration and service. The present invented technical proposal can directly adopts ping to make loop back detection when current network user POS interface adopts PPP package, without any modifying to configuration. It can be used in PPP packaged POS interface and MLPPP MP binding interface link loop back detection, and ATM PPPOA packaged link loop back detection, also supporting CE 1 / CPOS, MP binding etc adopting PPP packaged interface loop back detection. Said detection method also can detect link time delay.

Description

technical field [0001] The invention relates to a loopback detection method of a PPP encapsulation interface. Background technique [0002] SONET (Synchronous Optical Network, Synchronous Optical Network) is a synchronous transmission system defined by the American National Standards Institute (ANSI). / s), STM-4c (622Mbit / s) and STM-16c / STM-16 (2.5Gbit / s), the speed of each level is 4 times that of the lower level. Because it is a synchronous signal, multiplexing of multiple signals can be easily realized. [0003] Synchronous Digital Hierarchy (SDH for short) is a subset using SONET rate. It was defined by the International Telephone and Telegraph Consultative Committee (International Telephone and Telegraph Consultative Committee), now the International Telecommunications Union (International Telecommunications Union). [0004] Packet Over SONET / SDH (POS for short) is a technology applied in MAN and WAN, and it has the advantage of supporting packet data, such as Intern...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/26
Inventor 刘珺侯尚慧
Owner HUAWEI TECH CO LTD
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