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Ethernet multi-ring network protection method under multipoint fault condition and interconnected nodes

A technology for interconnecting nodes and multi-point failures, applied in ring networks, data exchange networks, data exchange through path configuration, etc., can solve problems such as damage to network performance

Inactive Publication Date: 2011-05-11
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] Data packets will form a broadcast storm in the "super ring", which will seriously damage the performance of the network. Therefore, when proposing a new protection scheme for a network with too many rings, it is necessary to avoid the occurrence of "super rings"

Method used

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  • Ethernet multi-ring network protection method under multipoint fault condition and interconnected nodes
  • Ethernet multi-ring network protection method under multipoint fault condition and interconnected nodes
  • Ethernet multi-ring network protection method under multipoint fault condition and interconnected nodes

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Embodiment Construction

[0057] The technical solutions of the present invention will be further elaborated below in conjunction with the accompanying drawings and specific embodiments.

[0058] In order to ensure that when the two main ring links between the interconnection nodes fail, the control node of the sub-ring can open the protection data forwarding function of the slave port. The method is applied to the scenario where multiple sub-rings are connected to the main ring as shown in FIG. 6(a). The core idea of ​​the present invention is: the two interconnected nodes paired on the sub-ring send link health (HL, Health Link) frames mutually on the main ring control channel, and run the health timer (HTR, Health Timer); When overtime and no HL frame is received, the interconnection node starts the comparison timer (CTR, Compare Timer), and periodically sends a comparison (CP, Compare) frame on the main ring control channel, and the CP frame carries the interconnection node The control channel ide...

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Abstract

The invention discloses an Ethernet multi-ring network protection method under a multipoint fault condition, comprising the following steps: two paired interconnected nodes on a subring transmit health link (HL) frames to each other on a main ring control channel, and operate a health timer (HTR); when the HTR is overtime and receives no HL frame, the interconnected nodes start a comparison timer (CTR), and periodically transmit comparison (CP) frames on the main ring control channel, the CP frames carry the control channel identifier (RC_ID) of a connecting subring of the interconnected nodes; and the interconnected nodes receiving the CP frames compare the RC_ID carried in the CP frames with the RC_ID of the connecting subring, and determine whether to trigger address refreshing on the connecting subring and start a protected data forwarding function according to the comparative result and the CTR. The invention ensures that when two main ring links between the interconnected nodes are out of order, the control nodes of the subring can start the protected data forwarding function from a port.

Description

technical field [0001] The invention relates to an Ethernet too many ring network protection technology in data communication, in particular to an Ethernet too much ring network protection method and interconnection nodes under multi-point faults. Background technique [0002] With the development of Ethernet in the direction of multi-service bearing, especially some services have higher and higher requirements on network reliability and real-time performance, Ethernet widely adopts ring networking to improve network reliability. In the protection of the ring network, fast protection switching is generally required, and the protection switching time is less than 50 ms. Currently such fast protection switching technologies include RFC3619 of the Internet Engineering Task Force (IETF, Internet Engineering Task Force), G.8032 of the International Telecommunication Union (ITU-T, International Telecommunication Union), and the like. [0003] Existing multi-ring networks such as ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L12/42H04L12/24H04L45/24
Inventor 王斌吴少勇
Owner ZTE CORP