WO2018209915A1

WO2018209915A1 - Large-scale oam detection system and method in distributed devices

Info

Publication number: WO2018209915A1
Application number: PCT/CN2017/111564
Authority: WO
Inventors: 张磊
Original assignee: 烽火通信科技股份有限公司
Priority date: 2017-05-18
Filing date: 2017-11-17
Publication date: 2018-11-22
Also published as: CN107179970B; CN107179970A

Abstract

The present invention relates to the field of distributed devices and provides a large-scale OAM detection system and method in distributed devices. The system comprises an exchange integrated-circuit board, a plurality of service line cards and at least one OAM integrated-circuit board. The exchange integrated-circuit board is used for processing exchange of OAM messages between the OAM integrated-circuit boards and the plurality of service line cards; each service line card is used for processing exchange of OAM messages between the exchange integrated-circuit board and lines; and each OAM integrated-circuit board contains a plurality of OAM processing units and an SW. The SW is used for exchanging OAM messages between the OAM processing units and an intermediate exchange integrated-circuit board. In a down direction, the OAM processing units are used for adding next-hop information in front of the OAM messages, and sending the OAM messages to the exchange integrated-circuit board by means of the SW; and in an up direction, the OAM processing units are used for carrying out OAM processing on the OAM messages from the exchange integrated-circuit board. According to the present invention, the OAM processing capacity of the overall devices is improved, and the OAM stability is improved.

Description

Large-scale OAM detection system and method in distributed equipment

Technical field

The present invention relates to the field of distributed devices, and in particular to a large-scale OAM detection system and method in a distributed device.

Background technique

IPRAN (Internet Protocol Radio Access Network) technology is a core network implementation technology generated for application scenarios of wireless service backhaul and large customer service access.

In a distributed device, in order to detect the on/off of network services, it is required to apply to large-scale OAM (Operation Administration and Maintenance) resources. The traditional implementation method is to set up an OAM chip on each line card to perform OAM detection. However, since each line card has a limitation on the total resource specifications, the resource specifications allocated to the OAM chip are often small, and it is difficult to implement OAM large specifications. application. Moreover, each line card has an OAM chip, but the service is divided into a certain line card. Since the OAM processing capability of each line card is limited, it is difficult to achieve processing balance on the service of multiple line cards, and the branch office is generated. The service on the card cannot be completely processed by the OAM, and the other line card OAM chip is idle. The service cannot be matched with the OAM processing, and the overall processing capability is not high. In addition, when the online card of the service is switched, the processing of the service is also switched to the OAM chip of the new line card, thereby causing the OAM to be unstable.

Summary of the invention

In view of the deficiencies in the prior art, the present invention aims to provide a large-scale OAM detection system and method in a distributed device, which improves the OAM processing capability of the overall device. Force to improve OAM stability.

To achieve the above objective, the present invention adopts a large-scale OAM detection system in a distributed device, including a switch board, multiple service line cards, and at least one OAM board, which is used to process OAM boards and multiple services. The exchange of OAM messages between line cards; each service line card is used to process the exchange of OAM messages between the switch board and the line; each OAM board contains multiple OAM processing units and one switch SW, SW The OAM processing unit is configured to exchange the OAM packet between the OAM processing unit and the intermediate switch board. The downstream direction of the OAM processing unit is used to add the next hop information to the OAM packet and send it to the switch board through the SW. The OAM packet of the switch board is OAM processed.

On the basis of the foregoing technical solutions, the OAM board is two, one is the main OAM board, one is the standby OAM board, the main OAM board is used to maintain the OAM working state, and the spare OAM board is used for Maintain the same working status as the main board.

On the basis of the foregoing technical solution, the switch board is configured to send the OAM message to the main OAM board and the OAM board in the uplink direction, and the OAM report sent by the main OAM board in the downlink direction. Text.

On the basis of the foregoing technical solutions, when the OAM board is a plurality of blocks, the OAM board is used as a main part, or part of the OAM board is used as a part, and part is a spare OAM board.

On the basis of the foregoing technical solution, the OAM board further includes an automatic protection switching APS module, which is configured to receive the service working state detected by the OAM board, and implement maintenance of the service protection state.

On the basis of the foregoing technical solution, the APS module is further configured to receive an interrupt signal triggered by the OAM module when the service working path is faulty, and determine a working path of the current service.

The invention also provides a large-scale OAM detection method in a distributed device, including steps Step:

In the downlink direction, the OAM processing module of the OAM card adds the header of the next hop information to the front end of the OAM packet, and sends the packet to the switch board through the SW. The switch board sends the OAM packet to the next hop information. On the service line card, the service line card encapsulates the packet header and sends it to the line.

In the uplink direction, the service board receives the OAM packet from the line and forwards it to the SW through the switch board. The SW forwards the OAM packet to the corresponding OAM processing unit. The OAM processing unit performs OAM processing on the OAM packet.

On the basis of the above technical solution, the OAM board has two pieces, one for the main OAM board and one for the standby OAM board; in the downlink direction, the intermediate board only receives the OAM message sent by the main OAM board; In the uplink direction, the intermediate board sends the received OAM packets to the active OAM board and the OAM board.

On the basis of the foregoing technical solution, an APS module is integrated on the OAM board, and the OAM processing unit sends the detected service working status to the APS module, and the APS determines that the service works in the main path or the alternate path of the line.

On the basis of the foregoing technical solution, when the OAM processing unit detects a service working path failure, an interrupt signal is triggered to the APS module, and the APS module performs protection state processing logic and determines a working path of the current service.

The beneficial effects of the invention are:

1. By integrating multiple OAM processing units on one OAM board, the OAM message is transmitted between the switch board and the service line card, which avoids unbalanced service processing on multiple line cards, and can greatly improve the whole equipment. OAM processing specifications and capabilities; different numbers of OAM processing units are placed on the OAM boards according to different requirements, thereby reducing the production cost of the whole machine.

2. When the service exits switching, it will not affect the OAM processing module. The stability of OAM processing; the specific implementation method for user isolation can greatly improve its performance when the user's perception is small.

3. Arrange a spare OAM board that is protected by the main OAM board to protect the OAM management resources and implement large-scale OAM application in distributed equipment.

4. By setting the APS module, the service path automatic protection switching is realized, and the high reliability of the whole system is further improved.

DRAWINGS

1 is a schematic diagram of a large-scale OAM detection system in a distributed device according to a first embodiment of the present invention;

2 is a schematic view showing the internal structure of an OAM board according to the present invention;

3 is a schematic diagram of a large-scale OAM detection system in a distributed device according to a second embodiment of the present invention.

detailed description

The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

As shown in FIG. 1 , the large-scale OAM detection system in the distributed device of the first embodiment includes a switch board, multiple service line cards, and an OAM board. The switch board is used to process OAM boards and multiple services. The exchange of OAM messages between line cards. Each service line card is used to process the exchange of OAM messages between the switch board and the line. The OAM card contains multiple OAM processing units and one SW (switch switch). The SW is used to exchange OAM packets between the OAM processing unit and the intermediate switch board. The OAM processing unit is used in the downlink direction before the OAM packet. The next hop information is added and sent to the switch board through the SW. The OAM processing unit is used in the uplink direction to perform OAM processing on the OAM packet from the switch board.

Preferably, as shown in FIG. 2, the OAM board further includes an APS (Automatic Protection Switching) module, which is respectively connected to the OAM processing unit, and is configured to receive the service working status detected by the OAM board to implement the service. Maintenance of the protection state; the APS module is also used to receive an interrupt signal triggered by the OAM module when the service working path fails, and determine the working path of the current service.

The large-scale OAM detection system in the distributed device of this embodiment specifically includes the following steps:

In the downlink direction, the OAM processing module of the OAM card adds a packet header to the front end of the OAM packet, and the next hop information is encapsulated in the packet header. The OAM packet is sent to the switch board through the SW, and the OAM packet is sent through the switch board. The message is sent to the service line card corresponding to the next hop information, and the service line card encapsulates the packet header and sends it to the corresponding line.

In the uplink direction, the service board receives the packet from the line, and identifies the OAM packet and the OAM entry ID. The switch forwards the OAM packet to the SW. The SW forwards the OAM packet to the OAM processing unit corresponding to the OAM entry ID. The unit performs subsequent OAM processing on the OAM packet.

Preferably, as shown in FIG. 2, if the APS module is integrated on the OAM board, the OAM processing unit sends the detected service working status to the APS module, and the APS determines the primary path or the alternate path on the service working line. Maintenance of business protection. When the OAM processing unit detects a service working path failure, an interrupt signal is triggered to the APS module, and the APS module performs protection state processing logic and determines a working path of the current service.

As shown in FIG. 3, the large-scale OAM detection system in the distributed device of the second embodiment is substantially the same as the first embodiment. The difference is that the OAM board is two pieces, and one piece is the main OAM board. For the spare OAM board. The main OAM board is used to maintain the OAM working status, and the standby OAM board is used to maintain the same working status as the main board. state. The switch board is in the uplink direction, and is used to send the OAM packets to the OAM card and the OAM card. The switch board is in the downlink direction and is used to receive the OAM packets sent by the active OAM card. The OAM packet sent by the standby OAM card is not received. Preferably, as shown in FIG. 2, the APS module can be integrated into the active OAM card and the standby OAM card. The function of the APS module is the same as that in the first embodiment, and details are not described herein.

The large-scale OAM detection method in the distributed device in this embodiment is different from the first embodiment in that, in the receiving (upstream direction) and sending (downlink direction) of the OAM packet, the intermediate switching board implements the concurrent selection function. Specifically, in the downlink direction, the primary OAM card and the standby OAM card add a packet header that encapsulates the next hop information to the front end of the OAM packet, and then sends the packet header to the switch board. The switch board receives only OAM. The OAM packet sent by the card is sent to the corresponding service line card (that is, the service line card corresponding to the next hop information). The service line card encapsulates the packet header and sends it to the corresponding line. In the uplink direction, the service board receives the packet from the line, and the identified OAM packet is sent to the active OAM board and the standby OAM board through the switch board. The OAM board and the standby OAM board are used internally. The received OAM file is processed the same.

The OAM board of the present invention can be multiple and can be configured according to different actual use situations. When there are multiple OAM boards, they can all be used as the main OAM board. You can also set up a spare OAM board. The rest are the main OAM boards. Or configure some main OAM boards and some spare OAM boards. The internal structure and function of the primary OAM card and the standby OAM card are the same as those in the foregoing embodiment, and are not described here.

The present invention is not limited to the above embodiments, and those skilled in the art can also make several improvements and retouchings without departing from the principles of the present invention. These improvements and retouchings are also considered as protection of the present invention. Within the scope. Not detailed in this manual The description is of the prior art known to those skilled in the art.

Claims

A large-scale OAM detection system in a distributed device, comprising: a switch board, a plurality of service line cards, and at least one OAM board, wherein the switch board is used to process between the OAM board and the plurality of service line cards The exchange of OAM messages; each service line card is used to process the exchange of OAM messages between the switch board and the line; each OAM board contains multiple OAM processing units and one switch SW, and SW is used to exchange OAM The OAM packet between the processing unit and the intermediate switch board. The downstream direction of the OAM processing unit is used to add the next hop information to the OAM packet and send it to the switch board through the SW. The uplink direction is used to send the switch board from the switch board. OAM packets are processed by OAM.
The large-scale OAM detection system in the distributed device of claim 1 is characterized in that: the OAM board is two, one is an OAM board for the main part, one is a spare OAM board, and the main OAM board is used. It is used to maintain the OAM working state. The standby OAM board is used to maintain the same working status as the main board.
The large-scale OAM detection system in a distributed device according to claim 2, wherein the switch board is configured to send OAM packets to the main OAM board and the OAM board in the uplink direction, and the downlink direction is It is used to receive OAM packets sent by the primary OAM card.
The large-scale OAM detection system in a distributed device according to claim 1, wherein when the OAM board is a plurality of blocks, the OAM board is used as a main component, or part of the OAM board is used as a main part. Alternate OAM board.
The large-scale OAM detection system of the distributed device according to any one of claims 1 to 4, wherein the OAM board further comprises an automatic protection switching APS module, configured to receive the service detected by the OAM board. Work status to maintain the status of business protection.
A large-scale OAM detection system in a distributed device as claimed in claim 5, The APS module is further configured to: when the service working path is faulty, receive an interrupt signal triggered by the OAM module, and determine a working path of the current service.
A large-scale OAM detection method in a distributed device based on the system of claim 1, comprising the steps of:

In the downlink direction, the OAM processing module of the OAM card adds the header of the next hop information to the front end of the OAM packet, and sends the packet to the switch board through the SW. The switch board sends the OAM packet to the next hop information. On the service line card, the service line card encapsulates the packet header and sends it to the line.

In the uplink direction, the service board receives the OAM packet from the line and forwards it to the SW through the switch board. The SW forwards the OAM packet to the corresponding OAM processing unit. The OAM processing unit performs OAM processing on the OAM packet.
The method for detecting a large-scale OAM in a distributed device according to claim 7, wherein the OAM board has two pieces, one for the OAM board and one for the standby OAM board; and the downlink board, the middle board only The OAM packet sent by the primary OAM card is received. In the uplink direction, the intermediate card sends the received OAM packet to the active OAM card and the OAM card.
The large-scale OAM detection method in a distributed device according to claim 7, wherein an APS module is integrated on the OAM board, and the OAM processing unit sends the detected service working status to the APS module, and the APS determines that the service works. The primary or alternate path of the line.
The large-scale OAM detection method in a distributed device according to claim 9, wherein when the OAM processing unit detects a service work path failure, an interrupt signal is triggered to the APS module, and the APS module performs protection state processing logic, and Determine the working path of the current business.