Method and device for realizing SDH management network based on DCN and software exchange

Abstract

The invention discloses a method and a device for realizing SDH (Synchronous Digital Hierarchy) management network based on DCN (Data Communication Network) and software exchange. The method comprises the following steps: providing a DCN channel which is used for bearing SDH services or OAM (Operation Administration and Maintenance) in SDH payload of STM-1; when the DCN channel bears the SDH services, transmitting through the standard STM-1 signal; when the DCN channel bears the OAM, executing the second-layer transfer of the network management information through the software exchange in an IP packet meaner, and directly transferring the network management information to an Ethernet. The invention adopts the DCN channel as the transmission linkage of the SDH management network, adopts the VC-12 unit in the STM-1 payload as the physical channel of OAM information among devices, adopts the software exchange to realize the direct IP transformation of the OAM information among the devices, and effectively solves the problems that the DCC (Data Communication Channel) is adopted as the physical channel of the SDH management network, such as the small bandwidth of the channel, simplification of network elements, privatization of communication protocol and port limitation, so the method and the device can produce positive effects while being applied to MSAP (Multi Service Access Platform) products.

Description

technical field [0001] The present invention relates to the technical field of transmission links used to form a management network in SDH (Synchronous Digital Hierarchy, synchronous digital series), in particular to a SDH management network based on DCN (Data Communication Network, data communication network) and software exchange Methods and devices. Background technique [0002] In SDH, a physical channel used to transmit management and control information between devices is generally DCC (Data Communications Channel, data communication channel). DCC is the physical channel of the SDH management network, see figure 1 As shown, in the SDH section overhead of STM-1, there are 12 bytes D1~D12 used to transmit OAM (Operation Administration and Maintenance, operation, management, maintenance) information, among which D1~D3 are located in the regeneration section (DCCR), The bandwidth is 3×64kbit / s, that is, 192kbit / s; D4-D12 are used for the multiplexing section (DCCM), and ...

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Problems solved by technology

[0005] The purpose of the present invention is in order to overcome the deficiency of above-mentioned background technology, provide a kind of method and the device that realize SDH management network based on DCN and software exchange, adopt DCN channel as the transmission link of SDH management network, the STM-1 payload in VC-12 unit is used as the physical channel of OAM information between devices, and realizes the direct IP conversion of OAM information between devices by using software exchange, which effectively solves the problem of small channel bandwidth, single network element and private communication protocol when DCC is used as the physical channel of SDH management network. problems of customization and interface limitations

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