Unlock instant, AI-driven research and patent intelligence for your innovation.

A method for ensuring the reliability of bidirectional forwarding detection and label switching path equipment

A technology of label switching path and bidirectional forwarding detection, applied in the field of IP network communication, which can solve the problems of incomplete detection definition and abnormal BFD detection.

Active Publication Date: 2018-05-15
ZTE CORP
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The present invention provides a method for ensuring the reliability of bidirectional forwarding detection and label switching path equipment, which solves the problem of abnormal BFD detection in some scenarios caused by the incomplete definition of MPLS LSP BFD detection in the current standard

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A method for ensuring the reliability of bidirectional forwarding detection and label switching path equipment
  • A method for ensuring the reliability of bidirectional forwarding detection and label switching path equipment
  • A method for ensuring the reliability of bidirectional forwarding detection and label switching path equipment

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment

[0046] exist figure 2 In the networking diagram shown, the system for establishing BFD detection for an MPLS LSP tunnel includes a source LSP device and a sink LSP device. The source device and the sink device proposed in the embodiment of the present invention are the same, and the source device is The active device initiated by the MPLS LSP BFD, and the sink device as the passive device initiated by the MPLS LSP BFD; the embodiment of the present invention extends the MPLS LSP Ping message, and uses the MPLS Router ID TLV described in the MPLS LSP Ping message.

[0047] For ease of description the following steps are figure 2 The network diagram shown is used for description, still taking the source LSP device and the sink LSP device as examples, including the following steps:

[0048] Step S1, the source LSP device, as the active party of MPLS LSP BFD, actively initiates BFD detection;

[0049] In step S2, the source LSP device constructs an MPLS LSP Ping request messag...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method for ensuring the reliability of bidirectional forwarding detection and a label switching path device. The source device sends a multi-protocol label switching (MPLS) label switching path (LSP) PING request packet carrying routing identification information to the sink device. In this document, the sink device uniquely determines a Bidirectional Forwarding Detection (BFD) session according to the route identification information and forwarding equivalence class (FEC) in the MPLS LSP PING request message. The present invention expands the existing MPLS LSP Ping standard RFC4379, adds MPLS Router ID TLV to carry the parameter that helps to uniquely determine the BFD session, that is, the router ID (Router ID), and proposes LSP BFD on the basis of compatibility with the existing standards A complete solution to avoid the problem of abnormal BFD session detection when the forwarding path changes in the existing solution.

Description

technical field [0001] The invention relates to the technical field of IP network communication, in particular to a method for ensuring reliable bidirectional forwarding detection and label switching path equipment. Background technique [0002] An increasingly important requirement in terms of network equipment reliability is that communication failures between adjacent systems are required to be quickly detected. In this way, a backup path can be established faster or switched to other links when a fault occurs. [0003] The appearance of the bidirectional forwarding detection (Bidirectional Forwarding Detection, BFD for short) protocol proposes a solution to the above requirements. BFD technology provides a general, medium-independent fast fault detection mechanism, which can detect any type of path between systems for each layer. These paths include direct links, multi-hop paths, Multiprotocol Label Switching (Multiprotocol Label Switch, MPLS for short) Label Switching...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/723H04L29/08H04L12/26H04L45/50
Inventor 张丽晖罗曙晖郭剑陈娟娟
Owner ZTE CORP