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Method and device for realizing interaction of protecting and cutting rings of optical channel data unit

A technology of data unit and tangent ring, which is applied in the field of optical communication, can solve problems such as different states, failure to realize tangent ring interaction normally, switching errors, etc., and achieve the effects of reducing complexity, improving reliability, and speeding up switching time

Active Publication Date: 2009-12-30
HUAWEI TECH CO LTD
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  • Abstract
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Problems solved by technology

And when the switching state of the second ring is actually determined, it may be different from the previously assumed state, so multiple switching will occur
This will lead to switching errors and the interaction between tangent rings cannot be achieved normally

Method used

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  • Method and device for realizing interaction of protecting and cutting rings of optical channel data unit
  • Method and device for realizing interaction of protecting and cutting rings of optical channel data unit
  • Method and device for realizing interaction of protecting and cutting rings of optical channel data unit

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Embodiment Construction

[0034] The specific implementation manners of the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0035]An interactive method for ODUk protection tangent rings disclosed in the present invention is to establish a virtual point on the common intersection node of the two tangent rings, and to establish a cross connection based on the virtual point. In this way, the When switching, it is not necessary to use the APS protocol to query the status of another ring and can directly perform switching of a single mode. Such as figure 2 As shown, it is a flowchart of an interactive method embodiment of an ODUk SPRing tangent ring in the present invention. The method is applied in ODUk SPRing and includes:

[0036] S201: Select the node used by the protected service in the ODUk SPRing, the node can be switched in the tangent ring, for example, for the ODUk SPRing in the tangent ring, any node in the ODUk SPR...

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Abstract

The embodiment of the invention discloses a method for realizing the interaction of protecting and cutting rings of an optical channel data unit, which comprises the steps: selecting a node which is protected and used by the optical channel data unit, and receiving units, transmitting units, protected receiving units and protected transmitting units, which are arranged on the node; connecting service receiving units and protected transmitting units with the same transmission direction or connecting service transmitting units and protected receiving units with the same transmission direction; and when the node is an interactive node, establishing two dummy nodes on the node, and connecting the service receiving units and the transmitting units in each one of the two directions with the protected receiving units and the protected transmitting units by one dummy node. The embodiment of the invention also discloses a device for realizing interaction of protecting and cutting rings of an optical channel data unit. The method and the device for realizing interaction of protecting and cutting rings of an optical channel data unit can realize the no-interruption of protected service, quicken switching time and increase protection reliability.

Description

technical field [0001] The present invention relates to the technical field of optical communication, in particular to a method and a device for realizing tangent ring interaction of optical channel data unit (ODUk) protection. Background technique [0002] In order to realize end-to-end service protection across two or more ring networks, optical channel data units are usually used to protect tangent rings to exchange services. At present, a common optical channel data unit protection tangent ring is an optical channel data unit shared protection ring (ODUk SPRing) tangent ring, and its networking mode is a tangent ring composed of ODUk SPRing and A tangent ring composed of ODUk SNCP (Optical Channel Data Unit Subnetwork Connection Protection Ring). Such as figure 1 As shown, it is a schematic diagram of the networking of ODUk SPRing and ODUk SPRing tangent ring in the prior art. In this figure, a tangent ring is formed by the first ODUk SPRing and the second ODUk SPRing....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J3/08H04L12/437H04L1/22
CPCH04J14/0283H04L12/437H04Q11/0062H04Q2011/0081H04Q2011/009H04J2203/006H04J14/0293H04J3/085H04Q2011/0092H04J3/1652
Inventor 阎君陈亘张波何达曾宇李振宇
Owner HUAWEI TECH CO LTD
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