Defect sensing and route entry refreshing method for three-layer Ethernet ring

An Ethernet and routing technology, applied in data exchange networks, digital transmission systems, electrical components, etc., to achieve the effects of reducing configuration complexity, fast switching, and high perception efficiency

Active Publication Date: 2014-10-29
FENGHUO COMM SCI & TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is the problem of how to realize

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  • Defect sensing and route entry refreshing method for three-layer Ethernet ring
  • Defect sensing and route entry refreshing method for three-layer Ethernet ring
  • Defect sensing and route entry refreshing method for three-layer Ethernet ring

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Embodiment Construction

[0031] The method for defect perception and routing entry refreshing of the three-layer Ethernet ring provided by the present invention will be described in detail below in conjunction with the accompanying drawings.

[0032] Such as figure 1 As shown, the three-layer Ethernet ring defect perception method provided by the present invention comprises the following steps:

[0033] Step A10, forming a topological address list with the node address information of each node on the ring topology in the order of sending from east to west, setting an eastbound access interface on the east of each node of the ring topology, and setting a westbound access interface on the west; Bind the eastbound access interface and the westbound access interface as a ring access interface pair, and set corresponding address information for it.

[0034] Such as figure 2 As shown, the address list of node A is: A(1.1.1.1 / 32)-B-C-D-E-F-A; the eastbound access interface is A1, the westbound access inte...

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Abstract

The invention discloses a defect sensing and route entry refreshing method for a three-layer Ethernet ring. The defect sensing and route entry refreshing method for the three-layer Ethernet ring includes: a node topology address list in a right-transmitting left-receiving order is formed; a three-layer detection message is constructed for every node, and three-layer forwarding is performed by every node repeatedly; defects are sensed according to the fact that whether the three-layer detection message is received within set time or not; when time is over, defect detection messages are transmitted to every node by the corresponding node, responses are given by the nodes receiving the defect detection messages, and specific defect positions are calculated by starting from the current node according to the response situations; SPF (storage protect feature) source node address information is introduced into a route forwarding entry of a routing list generated by an IGP (interior gateway protocol), and the affected route entries are refreshed. The defect sensing and route entry refreshing method for the three-layer Ethernet ring has the advantages that specific nodes on the Ethernet ring are not related to the route entries, quick sensing and swithing for any node defect of the three-layer Ethernet ring are realized under the condition that traffic access is needless to know, full-link redundancy protection configuration is not required, and protection switching configuration complexity of the three-layer Ethernet ring can be lowered effectively.

Description

technical field [0001] The invention relates to the protection of an Ethernet ring, in particular to a defect perception and routing entry refreshing method of a three-layer Ethernet ring. Background technique [0002] Ethernet Ring Protection (ERP) can provide operators with a ring protection function similar to SDH, and still retain the high cost performance of Ethernet. At present, the industry already has some good solutions for Ethernet ring protection, such as link-level RPR ring, Layer 2 ring RRPP protection, and single-ring protection methods such as Wrapping and Steering in the transmission field. However, the above-mentioned related ring protection schemes have their applicable scenarios, for example, only for specific physical links, or can only solve the second layer protection, or need to rely on static label deployment, etc., there is no better overall solution to the all-IP three-layer The solution for fast convergence and switching of the routing protocol of...

Claims

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Application Information

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IPC IPC(8): H04L12/703H04L12/437H04L45/28
Inventor 丁毅
Owner FENGHUO COMM SCI & TECH CO LTD
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