An SDH device management system and method based on VPX architecture

Abstract

The application discloses an SDH equipment management system and method based on a VPX architecture, which comprises a plurality of network-connected VPX cabinets and an SNMP network management server; the VPX cabinet comprises at least one SDH equipment, and the SDH equipments are located on the same optical transmission link; the SDH equipment is provided with a local Web management module, a DCC remote cross-site management module, an SNMP management module, a topology exploration module and a ring network protection module. The application realizes point-to-point management, multi-level management and one-to-many management when network service is smooth, and point-to-point and one-to-many management when network service is not smooth.

Description

Technical Field

[0001] This invention relates to the field of equipment management technology, and in particular to an SDH equipment management system and method based on VPX architecture. Background Technology

[0002] Existing VPX-based SDH (Synchronous Digital Hierarchy) optical transmission equipment suffers from simplistic configuration methods and high management and maintenance costs. Current VPX-based SDH equipment typically requires maintenance personnel to be physically present at the equipment site for configuration, resulting in a limited and inflexible approach. Furthermore, when a link fails, especially with numerous devices across a wide distance, maintenance personnel must troubleshoot at multiple locations, consuming significant time and drastically increasing operational and maintenance costs. Summary of the Invention

[0003] To address the above problems, this invention provides an SDH device management system based on the VPX architecture, the specific technical solution of which is as follows:

[0004] The system includes a VPX chassis with several network connections and an SNMP network management server; the VPX chassis includes at least one SDH device, and the SDH devices are located on the same optical transmission link;

[0005] The SDH equipment is equipped with a local Web management module, a DCC remote cross-site management module, an SNMP management module, a topology discovery module, and a ring network protection module.

[0006] The local web management module is used to provide a web configuration interface on the local Ethernet port;

[0007] The DCC remote cross-site management module is used to configure, restart, or reset remote SDH devices by using the DCC physical channel based on the SDH communication protocol, adopting the HDLC encapsulation format and distinguishing devices with a unique site address number, when Ethernet services are not available.

[0008] The SNMP management module is used to interact with the SNMP network management server to manage information when the Ethernet link is unobstructed. It identifies each chassis through the external network IP based on the SNMP protocol and identifies the SDH devices inside the chassis through the board IP.

[0009] The topology exploration module is used to periodically send topology exploration messages to the cascaded SDH devices through the DCC channel transceiver module. At each hop along the path of the topology exploration message, the topology information of the device is automatically appended, and the return message carrying the complete link topology information is reported to the SNMP network management server via Ethernet.

[0010] The ring network protection module is used to switch to the backup optical path within 50ms when the main optical path fails, and to keep the link and management channel unobstructed.

[0011] Through the DCC remote cross-site management module, before the network is connected, the other remote SDH devices can be configured from any SDH device in the cascade. Through the topology exploration module, the service status, optical port status and clock status of the cascaded SDH devices at each level can be automatically sensed, and the fault point can be quickly located in the multi-level optical board.

[0012] Furthermore, the topology search message carries a unique site address number and a TTL field. The initial value of the TTL field is 16. When the TTL decreases to 0, the message is discarded to prevent DCC channel blockage.

[0013] Furthermore, the SNMP network management server manages any target SDH device through at least one of the following methods:

[0014] Send SNMP commands to the SNMP management module of the target device via an Ethernet link;

[0015] The DCC management frame carrying the target device's address number is sent to the target device via the DCC channel transceiver module in a cross-site manner.

[0016] Furthermore, the SDH equipment also includes a real-time alarm module, which is used to monitor its own optical port status, clock status, and service status.

[0017] When an anomaly is detected, real-time alarm information is immediately reported to the SNMP network management server via message or DCC channel.

[0018] Combined with the ring network protection module, when the main optical path is interrupted, it switches to the backup optical path within 50ms and keeps the network link uninterrupted.

[0019] This invention also provides an SDH equipment management method based on a VPX architecture, which, based on the aforementioned SDH equipment management system, includes:

[0020] Get Ethernet service status;

[0021] If the connection is successful, the management server will perform point-to-point, one-to-many, or multi-level management of the SDH device via the external network IP and the board IP based on the SNMP protocol;

[0022] If the connection is not smooth, the remote SDH equipment can be configured, restarted, or reset by connecting to the management terminal at any point in the link, using the DCC physical channel and HDLC encapsulation format, and distinguishing the equipment by a unique station address number.

[0023] Furthermore, when a device failure occurs in the network, the network topology reported by the topology discovery module can be viewed on the SNMP network management server. If the topology data of a certain point is not reported, then that point is located as the fault point.

[0024] Furthermore, the overall network topology is formed by SDH devices at all levels sending homing messages along the DCC channel, attaching their own topology data to each hop device, and then reporting it back to the SNMP network management server via Ethernet services.

[0025] Furthermore, if the fault is determined to be a service misoperation, a service modification instruction is sent to the fault point via SNMP or DCC remote cross-site communication.

[0026] If the fault is determined to be a device stuck, a restart and reset command is sent to the fault point via DCC remote cross-site communication.

[0027] Furthermore, the DCC remote cross-site method uniquely identifies the target SDH device with its site address number and uses DCC messages in HDLC encapsulation format to forward and execute commands.

[0028] The beneficial effects of this invention are as follows:

[0029] This invention, through a local web management module, a DCC remote cross-site management module, an SNMP management module, and a topology discovery module, realizes point-to-point management, one-to-many management, and multi-level management, enabling configuration, maintenance, and management of the entire network from a single point. When Ethernet services are operational, point-to-point and one-to-many service management of devices can be performed via SNMP; before Ethernet services are operational, cross-site management can still be used to manage and configure other devices in the link; when a network link fails, the topology discovery function can quickly locate the faulty network, and services can be reconfigured or the device restarted via remote cross-site management, greatly improving work efficiency and reducing equipment maintenance costs. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the system architecture of the present invention.

[0031] Figure 2 This is a schematic diagram of the cross-site configuration of the present invention. Detailed Implementation

[0032] The technical solutions in the embodiments of the present invention are clearly and completely described in the following description. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0033] In the description of the embodiments of the present invention, it should be noted that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is conventionally placed during use, or the orientation or positional relationship in which those skilled in the art conventionally understand it during use. This is only for the convenience of describing the present invention and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of the present invention. Furthermore, the terms "first" and "second" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0034] In the description of the embodiments of the present invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.

[0035] Example 1

[0036] Embodiment 1 of the present invention discloses an SDH equipment management system based on the VPX architecture, such as... Figure 1 As shown, the details are as follows:

[0037] The system includes a VPX chassis with several network connections and an SNMP network management server; the VPX chassis includes at least one SDH device, which is located on the same optical transmission link; the SDH device is also provided with an optical interface, which is used to cascade external SDH devices through an optical fiber link;

[0038] The SDH equipment is equipped with a local Web management module, a DCC remote cross-site management module, an SNMP management module, a topology discovery module, and a ring network protection module.

[0039] The local web management module is used to provide a web configuration interface on the local Ethernet port.

[0040] The DCC remote cross-site management module is used to configure, restart, or reset remote SDH devices by using the DCC physical channel based on the SDH communication protocol, adopting the HDLC encapsulation format and distinguishing devices with a unique site address number, when Ethernet services are not available.

[0041] Specifically, when a device receives a DCC message, it first checks the station address number. If the station address number in the DCC message is the same as the local address number, the device executes the configuration instructions in the DCC message; otherwise, it continues to forward the DCC message to the next device.

[0042] The SNMP management module is used to interact with the SNMP network management server to manage information when the Ethernet link is unobstructed. It identifies each chassis through the external network IP based on the SNMP protocol and identifies the SDH devices inside the chassis through the board IP.

[0043] The SNMP network management server manages any target SDH device through at least one of the following methods:

[0044] Send SNMP commands to the SNMP management module of the target device via an Ethernet link;

[0045] The DCC management frame carrying the target device's address number is sent to the target device via the DCC channel transceiver module in a cross-site manner.

[0046] The topology exploration module is used to periodically send topology exploration messages to the cascaded SDH devices through the DCC channel transceiver module. At each hop along the path of the topology exploration message, the topology information of the device is automatically appended. The return message carrying the complete link topology information is reported to the SNMP network management server via Ethernet.

[0047] In a preferred embodiment, the topology search message carries a unique site address number and a TTL field. The initial value of the TTL field is 16. When the TTL decreases to 0, the message is discarded to prevent DCC channel blockage.

[0048] The ring network protection module is used to switch to the backup optical path within 50ms when the main optical path fails, and to keep the link and management channel unobstructed.

[0049] In a preferred embodiment, the SDH equipment further includes a real-time alarm module, which is used to monitor its own optical port status, clock status, and service status.

[0050] When an anomaly is detected, real-time alarm information is immediately reported to the SNMP network management server via message or DCC channel.

[0051] Based on this system architecture, the local Web management module, SNMP management module, and DCC remote cross-site management module together constitute three management and configuration methods for the overall network: local, remote SNMP, and remote cross-site, so as to realize the configuration, maintenance and management of the entire network from a single point.

[0052] Example 2

[0053] Embodiment 2 of the present invention discloses an SDH device management method based on the VPX architecture, based on Embodiment 1 above, and combines... Figure 1 As shown, the details are as follows:

[0054] Get Ethernet service status;

[0055] If the connection is successful, the management server will perform point-to-point, one-to-many, or multi-level management of the SDH device via the external network IP and the board IP based on the SNMP protocol;

[0056] Specifically, when maintenance personnel are at the SNMP network management server, they can monitor the entire network on the server and modify the points that need to be modified through SNMP or cross-site methods.

[0057] If the connection is disrupted, maintenance personnel can access the management terminal at any point in the link, use the DCC physical channel and HDLC encapsulation format to distinguish the device by its unique address number, and configure, restart, or reset the remote SDH device.

[0058] Specifically, when network equipment services require changes, if maintenance personnel are near the equipment, they can make modifications through direct management. This involves connecting a management PC to the equipment via a network cable and logging into the SDH equipment management interface through a browser to configure the equipment. Figure 2 As shown, when it is necessary to modify the remote device, it can be done through cross-site management. The management PC can be connected to the local device, and the SDH device management interface can be logged in through a browser to make cross-site service changes through the remote device site address number.

[0059] As a preferred embodiment, when a device failure occurs in the network, the network topology reported by the topology discovery module is viewed on the SNMP network management server. If the topology data of a certain point is not reported, then that point is located as the fault point.

[0060] The overall network topology is formed by SDH devices at all levels sending homing messages along the DCC channel, attaching their own topology data to each hop device, and then reporting the information to the SNMP network management server via Ethernet services.

[0061] If the fault point is determined to be a service misoperation, a service modification instruction is sent to the fault point via SNMP or DCC remote cross-site method;

[0062] If the fault is determined to be a device stuck, a restart and reset command is sent to the fault point via DCC remote cross-site communication.

[0063] The DCC remote cross-site mode uniquely identifies the target SDH device with its site address number and uses DCC messages in HDLC encapsulation format to forward and execute commands.

[0064] This invention is not limited to the specific embodiments described above. The invention extends to any new feature or combination disclosed in this specification, as well as any new method or process step or combination disclosed herein.

Claims

1. An SDH equipment management system based on VPX architecture, characterized in that, include Several network-connected VPX chassis and SNMP network management server; the VPX chassis includes at least one SDH device, the SDH devices being located on the same optical transmission link; The SDH equipment is equipped with a local Web management module, a DCC remote cross-site management module, an SNMP management module, a topology discovery module, and a ring network protection module; The local web management module is used to provide a web configuration interface on the local Ethernet port; The DCC remote cross-site management module is used to configure, restart, or reset remote SDH devices by using the DCC physical channel based on the SDH communication protocol, adopting the HDLC encapsulation format and distinguishing devices with a unique site address number, when Ethernet services are not available. The SNMP management module is used to interact with the SNMP network management server to manage information when the Ethernet link is unobstructed. It identifies each chassis through the external network IP based on the SNMP protocol and identifies the SDH devices inside the chassis through the board IP. The topology exploration module is used to periodically send topology exploration messages to the cascaded SDH devices via the DCC channel transceiver module. At each hop along the path of the topology exploration message, the topology information of the device is automatically appended, and the return message carrying the complete link topology information is reported to the SNMP network management server via Ethernet. The ring network protection module is used to switch to the backup optical path within 50ms when the main optical path fails, and to keep the link and management channel unobstructed.

2. The SDH equipment management system based on VPX architecture according to claim 1, characterized in that, The topology search message carries a unique site address number and a TTL field. The initial value of the TTL field is 16, and the message is discarded when the TTL is decremented to 0.

3. The SDH equipment management system based on VPX architecture according to claim 1, characterized in that, The SNMP network management server manages any target SDH device through at least one of the following methods: Send SNMP commands to the SNMP management module of the target device via an Ethernet link; The DCC management frame carrying the target device's address number is sent to the target device via the DCC channel transceiver module in a cross-site manner.

4. The SDH equipment management system based on VPX architecture according to claim 1, characterized in that, The SDH equipment also includes a real-time alarm module, which is used to monitor its own optical port status, clock status, and service status. When an anomaly is detected, real-time alarm information is immediately reported to the SNMP network management server via message or DCC channel.

5. A method for managing SDH devices based on VPX architecture, characterized in that, The method, based on the SDH equipment management system according to any one of claims 1-4, includes: Get Ethernet service status; If the connection is established, the SNMP network management server will perform point-to-point, one-to-many, or multi-level management of the SDH device based on the SNMP protocol via the external IP address and the board IP address. If the connection is not smooth, the remote SDH equipment can be configured, restarted, or reset by connecting to the management terminal at any point in the link, using the DCC physical channel and HDLC encapsulation format, and distinguishing the equipment by a unique station address number.

6. The SDH device management method based on VPX architecture according to claim 5, characterized in that, When a device failure occurs in the network, the network topology reported by the topology discovery module is viewed on the SNMP network management server. If the topology data of a certain point is not reported, then that point is located as the fault point.

7. The SDH device management method based on VPX architecture according to claim 6, characterized in that, The overall network topology is formed by SDH devices at all levels sending homing messages along the DCC channel, attaching their own topology data to each hop device, and then reporting the information to the SNMP network management server via Ethernet services.

8. The SDH device management method based on VPX architecture according to claim 7, characterized in that, If the fault point is determined to be a service misoperation, a service modification instruction is sent to the fault point via SNMP or DCC remote cross-site method; If the fault is determined to be a device stuck, a restart and reset command is sent to the fault point via DCC remote cross-site communication.

9. The SDH device management method based on VPX architecture according to claim 8, characterized in that, The DCC remote cross-site mode uniquely identifies the target SDH device with its site address number and uses DCC messages in HDLC encapsulation format to forward and execute commands.

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