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Loop Elimination Method and Device Applied 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: 2016-05-11
紫光恒越技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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  • Loop Elimination Method and Device Applied in Resilient Packet Ring Network
  • Loop Elimination Method and Device Applied in Resilient Packet Ring Network
  • Loop Elimination Method and Device Applied in Resilient Packet Ring Network

Examples

Experimental program
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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 applied in Embodiment 1 of the present invention is shown. exist Figure 5 In the RPR network, RPR1 and RPR2 exist in the RPR network, where the abstraction of RPR1 is 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 RPR2, which are respectively connected to HUB2 through local RPR logical ports; and, in Figure 5 Among them, nodes S1, S4 on RPR1 and nodes S2, S3 on RPR2 are bridged through Ethernet, specifically as Figure 5 shown.

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

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 Embodiment 2, different RPRs intersect. see Figure 6 , Figure 6 A schematic diagram of an RPR network applied in Embodiment 2 of the present invention is shown. exist Figure 6 In the RPR network, RPR1 and RPR2 exist in the RPR network, where the abstraction of RPR1 is equivalent to Figure 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 Figure 6 The shown HUB2, S1, S4, and S6 are nodes on RPR2, which are respectively connected to HUB2 through local RPR logical ports; Figure 6 , RPR1 and RPR2 intersect, and the intersection points of the two are S1 and S4, specifically as Figure 6 shown.

[0128] based on Figure 6 As shown in the RPR network, it can be seen that the loops in the entire ...

Embodiment 3

[0132] In the RPR network provided in Embodiment 3, there is an Ethernet bridge between at least two nodes on the same RPR, specifically as Figure 7 shown. see Figure 7 , Figure 7 A schematic diagram of an RPR network applied in Embodiment 3 of the present invention is shown. exist Figure 7 Among them, one RPR in the RPR network (the abstract equivalent is HUB1), the nodes S1 and S2 on it are connected not only 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 loops in the entire RPR network include not only the RPR, but also a loop (called an intergroup loop) between nodes S1 and S2 on RPR1, such as Figure 7 As shown, the intergroup ring is composed of rpr1 of S1, HUB1, rpr2 of S2, G1 / 0 / 4 of S2, and G1 / 0 / 1 of S1. For this situation, if the nodes in the entire RPR network forward packets according to the existing RPR standard, the packet forwarding storm will be caused by the inter-g...

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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 device for eliminating loops applied in a Resilient Packet Ring (RPR) network. Background technique [0002] RPR is a new type of media access control (MAC: MediaAccessControl) protocol that can run on synchronous optical network (SONET: Synchronous Optical Network) / synchronous digital series (SDH: Synchronous Digital Hierarchy), dense wavelength division multiplexing (DWDM: DenseWavelengthDivisionMultiplexing) and Ethernet In addition, RPR adopts a reverse double-ring structure to forward data packets along the ring network, providing flexible and efficient networking solutions for broadband IP MAN 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 double ring, the clockwise sending direction of data packets is called Ring 0, also ...

Claims

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Application Information

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Patent Type & Authority Patents(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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