Method and device for eliminating loop in resilient packet ring network

A resilient packet ring and loop technology, applied in the field of network communication, can solve problems such as data packet forwarding storms and implementation complexity

Active Publication Date: 2013-05-01
紫光恒越技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

from image 3 It can be seen that in the RPR network, there are not only RPR ring 1 including nodes S1, S2, and S5 and RPR ring 2 including nodes S3, S4, and S6, but also nodes S1, S2, and RPR rings on RPR ring 1 There is also a loop between nodes S3 and S4 on 2, which will cause a data packet forwarding storm
[0036] In order to avoid the above-mentioned forwarding storm, it is necessary to eliminate the loops existing between the nodes of different RPR rings. At present, the RPR standard provides additional protocol configuration and protection mechanisms to eliminate the above-mentioned loops, but the implementation is complicated and requires special hardware chip

Method used

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  • Method and device for eliminating loop in resilient packet ring network
  • Method and device for eliminating loop in resilient packet ring network
  • Method and device for eliminating loop in resilient packet ring network

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Embodiment 1

[0122] In the RPR network provided in Embodiment 1, different RPRs can be bridged through Ethernet. see Figure 5 , Figure 5 A schematic diagram of an RPR network to which Embodiment 1 of the present invention is applied is shown. exist Figure 5 , RPR1 and RPR2 exist in the RPR network, where RPR1 is abstractly equivalent to Figure 5 The shown HUB1, S1, S4, and S5 are nodes on RPR1, which are respectively connected to HUB1 through the local RPR logical port, and the abstraction of RPR2 is equivalent to Figure 5 The shown HUB2, S2, S3, and S6 are nodes on the RPR2, which are respectively connected to the HUB2 through the local RPR logical port; Figure 5 , the nodes S1 and S4 on RPR1 and the nodes S2 and S3 on RPR2 are bridged through Ethernet, as follows Figure 5 shown.

[0123] based on Figure 5 As shown in the RPR network, it can be seen that the loop existing in the entire RPR network not only includes RPR1 and RPR2, but also includes a loop between nodes S1 an...

Embodiment 2

[0125] So far, the description of Embodiment 1 is completed. Embodiment 2 is described below:

[0126] Example 2:

[0127] In the RPR network provided in this embodiment 2, different RPRs intersect. see Image 6 , Image 6 A schematic diagram of an RPR network to which Embodiment 2 of the present invention is applied is shown. exist Image 6 , RPR1 and RPR2 exist in the RPR network, where RPR1 is abstractly equivalent to Image 6 The shown HUB1, S1, S4, and S5 are nodes on RPR1, which are respectively connected to HUB1 through the local RPR logical port, and the abstraction of RPR2 is equivalent to Image 6 The shown HUB2, S1, S4, and S6 are nodes on RPR2, which are respectively connected to HUB2 through the local RPR logical port; Image 6 , RPR1 and RPR2 intersect, and the intersection points of the two are S1 and S4, as shown in Image 6 shown.

[0128] based on Image 6 As shown in the RPR network, it can be seen that the loop existing in the entire RPR network n...

Embodiment 3

[0132] In the RPR network provided by this embodiment 3, there is also an Ethernet bridge between at least two nodes on the same RPR, specifically as follows Figure 7 shown. see Figure 7 , Figure 7 A schematic diagram of an RPR network to which Embodiment 3 of the present invention is applied is shown. exist Figure 7 Among them, an RPR (abstract equivalent is HUB1) in the RPR network, the nodes S1 and S2 on it are not only connected through the RPR, but also through the Ethernet port.

[0133] based on Figure 7 As shown in the RPR network, it can be seen that the loop existing in the entire RPR network not only includes RPR, but also includes a loop (called an inter-group loop) between nodes S1 and S2 on RPR1, such as Figure 7 As shown, the inter-group loop consists of rpr1 of S1, HUB1, rpr2 of S2, G1 / 0 / 4 of S2, and G1 / 0 / 1 of S1. In view of this situation, if the nodes in the entire RPR network forward packets according to the existing RPR standard, the packet forw...

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Abstract

The invention provides a method and a device for eliminating a loop in a resilient packet ring (RPR) network. According to the method, a loop exists between nodes of different resilient packet rings (RPRs) in the RPR ring network, each node of the loop enables rapid ring protection protocol (RRPP) configuration, two ports of each node are provided with RRPP rings, a node on an RRPP ring is specified as an RRPP master node, the RRPP master node specifies a port connected with the RRPP ring as a main port and the other port as an auxiliary port, when the RRPP ring is positioned in a health status, the main port is opened and the auxiliary port is blocked, when the blocked auxiliary port is an RPR logic port, the RRPP master node prevents the RPR connected with the auxiliary port from executing insert and transit operation of data messages but executes the transit operation of RRPP messages on the RPR connected with the auxiliary port. By the method and the device, the loop in the RPR network is easily and effectively eliminated; and because the RRPP is configured, faults can be subjected to quick protection switching.

Description

technical field [0001] The present application relates to network communication technologies, and in particular, to a method and apparatus for eliminating loops in a Resilient Packet Ring (RPR: Resilient Packet Ring) network. Background technique [0002] RPR is a new type of Media Access Control (MAC: Media Access Control) protocol that can run on Synchronous Optical Network (SONET: Synchronous Optical Network) / Synchronous Digital Hierarchy (SDH: Synchronous Digital Hierarchy), Dense Wavelength Division Multiplexing (DWDM) : Dense Wavelength Division Multiplexing) and Ethernet, RPR adopts a reverse dual-ring structure to forward data packets along the ring network, providing a flexible and efficient networking solution for broadband IP metropolitan area network operators. [0003] In order to facilitate the understanding of this application, the technical terms involved in RPR are described below: [0004] Ring 0: In the RPR dual ring, the direction in which the data pac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/437H04L12/801
Inventor 徐鹏飞
Owner 紫光恒越技术有限公司
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