Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for enhancing RSVP-TE tunnel reliability

An RSVP-TE and reliability technology, applied in the field of traffic engineering TE, can solve the problem of interrupting the sending time of ping messages

Inactive Publication Date: 2008-09-03
ZTE CORP
View PDF0 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] When CISCO routers are tested, two routers are directly connected, an LSP is established, and the router’s built-in Internet packet explorer ping tool is used to send ping messages on this LSP according to the default frequency, and then perform the operation of changing the label value of the LSP tail node. , the whole process will cause the LSP to interrupt the sending time of 1 ping message!

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
  • Method for enhancing RSVP-TE tunnel reliability

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0028] At first, explain the main idea of ​​the present invention:

[0029] When the downstream node needs to change the label value, if it is the tail node of the LSP, it does not need to send the teardown message ResvTear to tear down the LSP, but directly sends the Resv message to update the label value to the upstream node; if it is not the tail node, it is also directly Send a Resv message to update the tag value to the upstream node. The content of the present invention involves two types of messages: Path messages and Resv messages.

[0030] In the second step, the content of the present invention is illustrated by way of example:

[0031] like figure 1 As shown, assume that the LSP from router R1 to R4 has been established. Now that R4 is the tail node, the label value needs to be changed. The label value before the change ...

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 relates to a method for increasing the reliability of RSVP-TE tunnel. The downstream node of the TE tunnel directly sends a Resv information with updated tag value to an upstream node when requiring to change the tag value, and receiving the corresponding new and old tag values before the update is successful. The invention is suitable for unicast MPLS network. In the upstream of anLSP, whatever happened, if tag LABEL used by the device needs to change, traffic interruption will never occur in the process of changing tag in the established LSP, thereby, lost of the message passing the LSP is prevented.

Description

technical field [0001] The invention relates to the technical field of traffic engineering TE in the multi-protocol label switching MPLS technical system, in particular to a method for improving the reliability of a resource reservation protocol RSVP-TE tunnel. Background technique [0002] (1) The cause of the problem [0003] In the MPLS technical system, traffic engineering is one of the very important applications. [0004] The RSVP signaling protocol was originally used to establish the application of the Inter-Serv Qos model in the IP forwarding network, and the extension of the RSVP signaling (request for comment document RFC3209) is used to establish TE tunnels in the MPLS forwarding domain (RSVP-TE or MPLS-TE), the TE tunnel is unidirectional, so the label switching path LSP path is also unidirectional. [0005] The message types mainly included in the RSVP signaling protocol are as follows: [0006] message type describe path Used to est...

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
IPC IPC(8): H04L12/56H04L45/50H04L47/724
Inventor 张新林周蕙菁
Owner ZTE CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com