Method and device for loop discovery, space reuse and protection conversion in MAC bridge connecting network

A bridging network and protection switching technology, which is applied to ring networks, data switching networks, and data switching through path configuration, and can solve problems such as low loop utilization efficiency and lack of fast protection switching functions.

Inactive Publication Date: 2005-07-27
周旭扬
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention aims at the disadvantages of MAC bridging network, especially Ethernet, that the loop utilization efficiency is not high and lacks the fast protection switching function within 50 ms, and provides a kind of loop topology discovery, space reuse and automatic protection in the MAC bridging network switching method

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  • Method and device for loop discovery, space reuse and protection conversion in MAC bridge connecting network
  • Method and device for loop discovery, space reuse and protection conversion in MAC bridge connecting network
  • Method and device for loop discovery, space reuse and protection conversion in MAC bridge connecting network

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Embodiment Construction

[0057] The following sections describe in detail specific embodiments of the present invention. It will be understood by those skilled in the art that some or all aspects of the invention may be practiced, or may be practiced without these details. In order to avoid unnecessarily obscuring the content of the present invention, parts of the present invention that are well known to those skilled in the art have not been expressed or described in detail. Accordingly, the description and drawings are in the sense of illustration and not of limitation.

[0058] In addition, in order to make the present invention easier to understand, various operations will be described in sequence using a plurality of discrete steps. However, the order of description does not imply that these operations are necessarily associated with an order, especially an order of presentation.

[0059] FIG. 1 is an embodiment of loop topology discovery in a MAC bridging network 100 . The ports of the bridge...

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Abstract

The topology discovering message transmitted periodically by Loop control net bridge returns to control net bridge the whole loop, and records the state of net bridge and link. The control bridge notifies the topology message to other net bridge through topology instruction, and appoints protective net bridge and protective port to prevent net bridge from blocking protective port, and avoids data to cycle in loop. The net bridge selects shortest path, and implements spatial reuse according to the topology message. Meanwhile the net bridge use heart rate message to examine connectivity of link. When the failure of link is found, it notifies protective net bridge to accomplish fast protection switching.

Description

technical field [0001] The present invention relates to data communication networks. The invention particularly relates to MAC bridging networks such as Ethernet, loop topology discovery, connectivity checking and automatic protection switching for space reuse networks. Background technique [0002] With the popularity of the Internet and the continuous emergence of new services, the data traffic in LANs and MANs has grown exponentially. A technology mainly used in the metropolitan area network is synchronous digital sequence (SDH / SONET). SDH / SONET provides self-healing capability, and provides 1+1 and 1:N protection within 50ms through protection switching. SDH / SONET adopts time-division multiplexing mode, which is mainly suitable for voice transmission, but it has the disadvantages of high cost and low efficiency for data transmission. [0003] The MAC bridging network at the link layer, especially Ethernet, is gradually and widely used in the construction of metropolita...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/42H04L12/437
Inventor 周旭扬
Owner 周旭扬
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