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Failure detection in the multiprotocol label switching multicast label switched path's end-to-end protection solution

A technology for label switching paths and fault detection sessions, which is applied in data switching networks, digital transmission systems, electrical components, etc., and can solve problems such as long delays

Active Publication Date: 2014-06-25
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when a node on the first P2MP LSP fails, the delay for the second external network or client to determine the failure and switch to the second egress node receiving the traffic may be longer
This delay may be unacceptable in some systems, for example, for real-time services such as Internet Protocol (IP) Television (IPTV)

Method used

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  • Failure detection in the multiprotocol label switching multicast label switched path's end-to-end protection solution
  • Failure detection in the multiprotocol label switching multicast label switched path's end-to-end protection solution
  • Failure detection in the multiprotocol label switching multicast label switched path's end-to-end protection solution

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Embodiment Construction

[0016] It should be understood at the outset that although an exemplary implementation of one or more embodiments is provided below, the systems and / or methods disclosed herein may be implemented by various other known or existing techniques. The invention should in no way be limited to the illustrative implementations, drawings, and techniques illustrated below, including the exemplary designs and implementations illustrated and described herein, but may be limited within the scope of the appended claims and their equivalents. Modify within the complete scope of the object.

[0017] The current control-plane-based signaling mechanisms for fault detection are complex and slow, typically taking about a second to perform fault detection. The present invention introduces a simple and fast signaling mechanism based on the data plane between the head node and the tail end node of the multicast LSP. The working of the mechanism of the present invention is similar to a heartbeat, fo...

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Abstract

In one aspect, the invention includes a network component comprising a processor configured to establish a first data plane based failure detection session having an inactive status along a first LSP with at least one leaf node, receive a predetermined number of notification messages from the leaf node, wherein the predetermined number of notification messages indicate the failure of a second data plane based failure detection session along a second LSP from a second processor to the leaf node, and change the status of the first data plane based failure detection session to active along the first LSP upon receipt of the notification message.

Description

[0001] Related Applications Cross Application [0002] This application claims prior application to U.S. Provisional Application No. 61 / 545,897, filed October 11, 2011, entitled "Fault Detection in an End-to-End Protection Solution for Multiprotocol Label Switching Multicast Label Switching Paths" Priority, the contents of these earlier applications are incorporated herein by reference in their entirety. Background technique [0003] Point-to-multipoint (P2MP) and multipoint-to-multipoint (MP2MP) label-switched paths can be created in the network using the Multiprotocol Label Switching (MPLS) Label Distribution Protocol (LDP). The set of LDP extensions used to create P2MP or MP2MP LSPs may be referred to as Multipoint LDP (mLDP), which is described in the Internet Engineering Task Force (IETF) titled "Label Distribution Protocol for Point-to-Multipoint and Multipoint-to-Multipoint Label Switched Paths". Extensions" are described in Request for Comments (RFC) 6388, the content...

Claims

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Application Information

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IPC IPC(8): H04L12/703H04L12/723H04L12/711H04L12/753H04L45/24H04L45/28H04L45/247H04L45/50
CPCH04L45/50H04L45/28H04L45/48H04L45/22H04L43/10
Inventor 赵强林陈莹
Owner HUAWEI TECH CO LTD
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