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

Service transmission method based on ring network protection and node used for service transmission

A business transmission and node technology, applied in the field of data network communication, can solve the problems of unrecognizable label Y, unable to correctly forward business, etc., and achieve the effect of correct forwarding

Active Publication Date: 2015-06-03
HUAWEI TEHCHNOLOGIES CO LTD
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] like figure 1 The P2MP service shown in the configuration is as follows figure 2 After the shown working and protecting P2MP SPME, when the service arrives at the entry node A, replace the entry label X of the service at node A with the label Y assigned to node A by node B, and press the label Z1 of the working P2MP SPME, so that P2MP The service is forwarded along the working P2MP SPME, but the nodes C, D, E and F on the working P2MP LSP cannot recognize the label Y when receiving the service, so the service cannot be forwarded correctly

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
  • Service transmission method based on ring network protection and node used for service transmission
  • Service transmission method based on ring network protection and node used for service transmission
  • Service transmission method based on ring network protection and node used for service transmission

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] This embodiment is an example of SPME configuration for ring network P2MP LSP protection.

[0068] With each entry node on the ring network as the root node, create two P2MP SPMEs respectively, one of which is the working SPME and the other is the protection SPME, and the direction of the two SPMEs is opposite. Under normal circumstances, there are at most two nodes on the ring as ring-in nodes, and any other node can be a ring-out node. Here, the simplest example is used to illustrate that only node A is a ring-in node, such as figure 2 As shown, the root node of the working SPME is node A, B, C, D, E and F are its leaf nodes, and along the clockwise direction of the ring; the root node of the protection SPME is also node A, B, C, D , E and F are all leaf nodes, and follow the counterclockwise direction of the ring. The working SPME and the protection SPME are respectively as figure 2 Shown in dashed solid line and dotted dashed solid line.

Embodiment 2

[0070] This embodiment gives an example of label allocation for ring network protection, such as Figure 4 As shown in , the label value is assigned in a unicast manner, and the specific steps are as follows:

[0071] Taking P2MP LSP 1 as an example, the leaf nodes of the P2MP LSP are completely consistent with the leaf nodes of the P2MP SPME.

[0072] Step 401: Node A initiates a P2MP LSP establishment message, here is an RSVP-TE Path message, and node A judges that protection is required and there are two SPMEs as work and protection respectively, then node A assigns a label value (such as 20) to Nodes B, C, D, E, and F carry the label value in the sent unicast Path message;

[0073] Here, the explicit routing information of the P2MP LSP received by node A is shown in Table 1. The source IP address of the unicast Path message sent to each leaf node is the address of node A, the corresponding destination IP address and ERO / SERO is shown in Table 2, and the alert option is ...

Embodiment 3

[0083] Such as Figure 5 As shown, the Path message created by the ingress node is sent to all leaf nodes through the working P2MP SPME. The steps are as follows:

[0084] Step 501: Node A receives the establishment message of P2MP LSP, here is the RSVP-TE Path message, and node A judges that protection is needed and there are two SPMEs as work and protection respectively, then node A assigns a label value (20), and The tag value is carried in the sent Path message;

[0085] Here, the explicit routing information in the Path message of the P2MP LSP received by node A is as follows, but the information contained in the Path message received by node A is not limited to the following content:

[0086] S2L SUB-LSP-B ERO: A, Bobject-B

[0087] S2L SUB-LSP-D SERO: B, C, Dobject-D

[0088] S2L SUB-LSP-E SERO:D,Eobject-E

[0089] S2L SUB-LSP-F SERO: E, F object-F

[0090] In addition, the Path message sent by node A encapsulates the label of the working SPME and the alert label (...

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 service transmission method based on ring network protection and a node used for service transmission, which are used for realizing the correct transmission of the service. The method comprises the following steps: in the process of building P2MP (point-to-multipoint) LSP (Label Switched Path) on a ring or after the P2MP LSP is built, a ring entering node of the ring judges whether working P2MP SPME (Sub-Path Maintenance Element) and P2MP SPME protection exist on the ring, if yes, a label value is distributed in an upstream label distribution mode; the label value is sent to all leaf nodes of the P2MP LSP on the ring; the ring entering node uses the label value to transmit service on the P2MP LSP by the working P2MP SPME and / or P2MP SPME protection; and the node comprises a judgment module, a label distribution module, a transmitting module and a service packaging module. With the service transmission method, each leaf node can identify a label used when the ring entering node transmits the service so as to correctly forward the service.

Description

technical field [0001] The invention relates to the field of data network communication, in particular to a service transmission method based on ring network protection and a node used for service transmission. Background technique [0002] Driven by the trend of IP-based telecommunication services, the services carried by the transport network have shifted from Time Division Multiplexing (TDM, Time Division Multiplexing) to IP-based services. Level operation management maintenance (OAM, Operations Administration and Maintain) and protected packet transmission technology. Under this requirement, the industry has proposed the concept of Packet Transport Network (PTN), and the Multi-Protocol Label Switching Transmission Framework (MPLS-TP, Transport Profile for Multi-Protocol Label Switching) is a PTN technology. [0003] MPLS-TP technology is jointly developed by IETF (Internet Engineering Task Force) and ITU-T (International Telecommunication Union Telecommunication Standar...

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): H04L12/70H04L12/24H04L12/42H04L45/28H04L45/50
Inventor 代雪会吴波
Owner HUAWEI TEHCHNOLOGIES CO LTD
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