A method and apparatus for switching state of RPR intersecting ring logic interface

Abstract

The embodiment of the invention provides a method and a device for switching the state of an RPR intersecting ring logic interface, which are applied to the equipment where the intersecting ring logicinterface whose initial state is a blocking state in an RPR intersecting ring network is located. The method comprises the following steps: monitoring the state of the intersecting ring logic interface whose initial state is a forwarding state on the equipment at the local end; receiving a monitoring protocol message sent by the opposite end equipment according to a preset period; identifying anddetermining a state of an intersecting ring logic port whose initial state is a forwarding state on a peer device according to a value of a specified bit in a monitoring protocol message; If the state of at least one intersecting ring logical interface of all intersecting ring logical interfaces with an initial state of a forwarding state on the local device and the counterpart device is a faultstate, switching the state of the intersecting ring logical interface with an initial state of a blocking state from a blocking state to a forwarding state. The state of the intersecting ring logicalinterface with an initial state of a blocking state is switched to a forwarding state. Through the scheme, the transmission interruption time of the data frame can be shortened when the equipment fails.

Description

technical field [0001] The invention relates to the technical field of the Internet, in particular to a method and device for switching the state of an RPR intersecting ring logic port. Background technique [0002] RPR (Resilient Packet Ring) technology is a new MAC (Media Access Control) protocol that optimizes message transmission on the ring structure, and can run on SONET (Synchronous Optical Network) / SDH (Synchronous Digital Hierarchy, synchronous digital series), DWDM (Dense Wavelength Division Multiplexing, Dense Wavelength Division Multiplexing), Ethernet and other physical layers, can effectively transmit voice, image and other data types of messages, for Broadband IP MAN operators provide flexible and efficient networking solutions. [0003] A ring network composed of RPR technology is called an RPR ring. The structure of an RPR ring is as follows: figure 1 shown. With the development of Internet technology, the network environment becomes more and more complex...

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Problems solved by technology

[0004] If any of the intersecting devices experiences a device failure, for example, image 3 In the shown device 3, a fault occurs on one of the intersecting ring logic ports. Considering the data frame transmission cycle and transmission delay, device 4 will not receive the data frame sent by device 3 for a long time before it will intersect The state of ring logical port RPR6 / 0 / 1 is set to forwarding state to ensure the normal transmission of data frames in RPR intersecting ring networking. In this way, the state switching of intersecting ring logical ports cannot quickly track device failures, resulting in device failures , the transmission interruption time of the data frame is too long

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