WO2012065400A1

WO2012065400A1 - Device protection method and apparatus

Info

Publication number: WO2012065400A1
Application number: PCT/CN2011/072864
Authority: WO
Inventors: 孙士友
Original assignee: 中兴通讯股份有限公司
Priority date: 2010-11-18
Filing date: 2011-04-15
Publication date: 2012-05-24
Also published as: CN101986626B; CN101986626A

Abstract

The present invention discloses a device protection method and apparatus. The method includes the follows steps: the chip of a master main control panel is stacked with the chip of a slave main control panel; the ports of the master main control panel and the slave main control panel which connect to the same service panel are port-aggregated; at the service panel side, the ports connected with the master main control panel and the slave main control panel are port-aggregated; when the protection switching happens, the master main control panel and the slave main control panel perform handover through the channel formed from stacking the chips and the service panel communicates with the slave main control panel through the aggregation channel formed from port-aggregation. With the method of stacking the chips of multiple main control panels and aggregating the ports of the chips, the present invention achieves the protection for communication devices and solves effectively the problem that the disconnection time is long in the procedure of the switching in the conventional ways.

Description

Method and device for protecting equipment

Technical field

The present invention relates to a device protection technology, and more particularly to a device protection method and device.

Background technique

For the communication system equipment, the architecture of the main control board (NCP) plus the service board is generally taken. The clock board is usually integrated with the main control board. The service board includes the cross (switching) board, the interface board, the circuit board, and the branch circuit. Board and so on. There are one or more channels between the main control board and the service board. The main control board is responsible for the management and monitoring of each service board. The service board needs to report various status information such as alarms, overhead, and heartbeats periodically or irregularly. . The protection switching control center is generally set on the main control board. The main control board sends the switching control information according to the alarms and heartbeats reported by the service board. Since the status and function of the main control board is very important, two or more main control boards are generally set in the system, and the protection modes such as 1+1, 1 : 1, 1+N or 1:N are used for work.

The channel between the main control board and the service board (probably the S port channel, ECC channel, and alarm channel, etc., collectively referred to as the management channel) is usually Ethernet (such as FE, GE, etc.), and both the electrical mode and the optical mode are available. There are one or several data synchronization channels (which can be FE, GE, 10GE, etc.) between the main control boards, which are used for data synchronization and interaction between the active and standby devices. The hardware interconnects to communicate the active and standby states and perform switching control.

The communication chips between the active and standby NCPs are independent. For the entire system, if the Ethernet interconnect architecture is used, as shown in Figure 1, it can be clearly seen between the active and standby NCPs and between the boards. There are multiple loops, so there is a need to prevent broadcast storms caused by Ethernet loops. There are two traditional approaches:

(1) Turn off the Link state of the standby board to ensure that only one main control board is connected to other service boards at the same time. This method eliminates the problem of Ethernet looping, but also loses most of the protection. Features. As you can see from the figure, the protection path is much less. In addition, during the process of switching the Link, it will also cause a broken chain for a certain period of time.

(2) Using Spanning Tree (STP) or Rapid Spanning Tree (RSTP) protocol to prevent Ethernet looping The resulting Ethernet broadcast storm, regardless of STP or RSTP algorithm, due to the participation of the CPU, there will be protocol operation time, and when there are too many nodes (too many slots), the time to find the ROOT (root) node will It is lengthened. Therefore, when the above method occurs, the convergence time of the protocol is slower and the link-breaking time is longer.

Summary of the invention

The technical problem to be solved by the present invention is to provide a protection method and device for the device, which solves the problem of long chain break time when the active and standby NCPs are switched.

In order to solve the above technical problem, the present invention discloses a method for protecting a device, including: stacking a main control board and a standby main control board, and using the main control board and the standby main control board The port is connected to the port of the same service board to perform port aggregation. On the service board side, the port connected to the main control board and the standby main control board is port-aggregated.

When the protection switching occurs, the active main control board and the standby main control board are switched by the channel formed by the chip stacking, and the service board and the standby main control board are formed by the aggregation channel formed by the port aggregation. Interaction. The steps of the service board and the standby main control board interacting through the aggregation channel formed by the port aggregation include:

After detecting that the service board is disconnected from the active main control board, performing traffic balancing on the aggregation channel, and transmitting information sent to the active main control board through the aggregation channel and the standby The channel connected to the main control board is sent to the standby main control board. The steps of the main control board and the standby main control board being switched by the channel formed after the chip stacking include:

The active main control board sends the active/standby status information and the switching control information to the standby main control board through the channel formed by the chip stacking with the standby main control board, so as to implement the switching of the main control board. . The method further includes:

After the active main control board and the standby main control board are switched, the service board is in the standby During the interaction with the main control board, the link status with the standby main control board is also detected. The method further includes:

Before the protection switching occurs, the service board exchanges information with the active main control board through a channel connected to the active main control board in the aggregation channel. The present invention also provides a protection device for a device, comprising: an active main control board and a standby main control board, wherein a chip stack is used between the main main control board and the standby main control board, and The port of the active main control board and the standby main control board connected to the same service board is aggregated, and the service board is connected to the port of the main control board and the standby main control board. The port is aggregated; the main control board and the standby main control board are configured to switch through channels formed after chip stacking when protection switching occurs;

The service board is configured to interact with the aggregation channel formed by the port aggregation of the standby main control board. The service board and the standby main control board are interacted by the aggregation channel formed by port aggregation in the following manner:

After detecting that the service board is disconnected from the active main control board, performing traffic balancing on the aggregation channel, and transmitting information sent to the active main control board through the aggregation channel and the standby The channel connected to the main control board is sent to the standby main control board. The main control board and the standby main control board are switched by using channels formed after chip stacking as follows:

The active main control board sends the active/standby status information and the switching control information to the standby main control board through the channel formed by the chip stacking with the standby main control board, so as to implement the switching of the main control board. . The service board is further configured to detect and the standby main control board during the interaction with the standby main control board after the main control board and the standby main control board are switched. The link state between.

The service board is further configured to pass through the aggregation channel before protection switching occurs. The channel connected to the main control board exchanges information with the main control board.

In summary, the present invention realizes the protection of the communication device by stacking multiple stacks of the main control board chip and the chip port aggregation Trunk, which can effectively solve the problem that the traditional method has a long chain-breaking time when the switching occurs, in the main control The link between the boards and the link between the main control board and the service board achieve the fastest information transmission and protection switching, so that the protection capability of the entire system can be improved under the simple system architecture, and the communication system can be established. An efficient and robust protection mechanism. BRIEF abstract

1 is a schematic block diagram of an existing device protection scheme;

2 is a schematic diagram of a protection device based on chip stacking and port aggregation according to an embodiment of the present invention;

FIG. 3 is a flowchart of a device protection method according to an embodiment of the present invention.

Preferred embodiment of the invention

In this embodiment, on the Ethernet-based system interconnection architecture, the chip stack between the active and standby main control boards is implemented, and the ports of the main control boards connected to the same slot on the same service board are used for port aggregation. , thus establishing a complete closed data transfer and protection channel.

Chip stacking (also known as chip cascading) is the process of interconnecting two or more chips through a high-speed channel (sometimes requiring communication message formats or communication protocols) to simulate multiple chips into one chip.

Port aggregation is the aggregation of multiple ports into one port to increase the bandwidth of the port.

The chip stack is generated to increase the chip capacity and the number of interfaces to expand the function of the chip. In this embodiment, two or more chips respectively placed on the main control board are simulated into one chip, and the main purpose is not to increase the capacity, but to simulate the ports of the chips on different main control boards. The ports on the chip, because different chips are placed on different main control boards, the chips are stacked into one, which is equivalent to the same main board, the main board is two or more chips on the main standby main board. The information interaction simulation becomes the information exchange between different ports of a chip. When the switching occurs, the switching speed of the active and standby main control boards is greatly improved. On the basis of the chip stacking, the port aggregation is utilized. In order to achieve fast protection switching.

The present embodiment will be described in detail below with reference to the accompanying drawings.

As shown in Figure 2, the main control board is equipped with a CPU, three-layer/two-layer switch chip, among which, the three-layer switch chip can select BroadCom's BCM56XXX series, and supports the HiGig interface (the physical layer is the XAUI interface, the maximum lOGbps Stacking of transmission rate); the service board is configured with a CPU and a Layer 2 switching chip.

After the switch chips of each main control board are stacked into one chip, the ports connected to the same service board are aggregated and simulated into one port. On the service board side, the ports connected to the active and standby NCPs are aggregated. . After the aggregation is complete, the service board is aggregated into a channel between the active and standby NCPs. When the active/standby switchover occurs on the main control board, the active and standby NCPs can be switched through the traffic balancing in the aggregation channel.

As shown in FIG. 3, the method for implementing device protection in this embodiment includes the following steps:

In the step 301, the active and standby NCPs are stacked on the same port, and the ports on the active and standby NCPs are connected to the same slot of the same service board for port aggregation, and the service board is connected to the port of the same slot on the active and standby NCPs. Polymerization

Step 302: When the main control board 2 is the main control board, the service board side uses the channel connected to the main control board 2 of the aggregation channel 2 to exchange information with the main control board 2;

Step 303: When the Ethernet on the backplane side of the main control board 2 is suddenly broken, the corresponding switch chip port of the service board detects the broken link in time, and performs traffic balancing on the aggregation channel 2, and sends it to the main control board. The information of the second channel is sent to the main control board 1 through the channel connected to the main control board 1 of the aggregation channel 2; in step 304, the main control board 2 transmits the active/standby state and the switching control information through the stacking channel with the main control board 1. ;

Step 305, the main control board 1 serves as an active main control board, and the service board side uses the channel connected to the main control board 1 of the aggregation channel 2 to perform information interaction with the main control board 1, and detects the chain between the main control board 1 and the main control board 1. Road status.

In this embodiment, there is no link opening and closing, and generally only the Link Aggregation Control Protocol (LACP) needs to be run, so the protection switching can be completed in a short time. One of ordinary skill in the art can understand that all or part of the above steps may be completed by a program to instruct related hardware, and the program may be stored in a computer readable storage medium such as a read only memory, a magnetic disk or an optical disk. Alternatively, all or part of the steps of the above embodiments may also be implemented using one or more integrated circuits. Correspondingly, each module in the foregoing embodiment may be implemented in the form of hardware, or may be implemented in the form of a software function module. The invention is not limited to any specific form of combination of hardware and software.

The invention may, of course, be embodied in a variety of embodiments without departing from the spirit and scope of the invention, and any modifications, equivalents, and improvements made within the spirit and scope of the invention are included in the invention. Within the scope of protection.

Industrial applicability

The invention realizes the protection of the communication device by stacking a plurality of main control board chip stacks and the chip port aggregation trunk, which can effectively solve the problem that the traditional method has a long chain-breaking time when the switching occurs, and the chain between the main control boards The fastest information transmission and protection switching are achieved on the link between the road and the main control board and the service board, so that the protection capability of the entire system can be improved under a simple system architecture, and an efficient system is established on the communication system. Robust protection mechanism and therefore strong industrial applicability.

Claims

Claim

1. A method of protecting a device, comprising:

Stacking the main control board and the standby main control board, and connecting the main control board and the standby main control board to the port of the same service board for port aggregation. On the service board side, Ports connected to the main control board and the standby main control board for port aggregation;

When the protection switching occurs, the active main control board and the standby main control board are switched by the channel formed by the chip stacking, and the service board and the standby main control board are formed by the aggregation channel formed by the port aggregation. Interaction.

2. The protection method according to claim 1, wherein the step of interacting between the service board and the aggregation main control board through the aggregation channel formed by the port aggregation comprises:

After detecting that the service board is disconnected from the active main control board, performing traffic balancing on the aggregation channel, and transmitting information sent to the active main control board through the aggregation channel and the standby The channel connected to the main control board is sent to the standby main control board.

3. The protection method according to claim 2, wherein the step of switching between the active main control board and the standby main control board through the channel formed by the chip stacking comprises:

The active main control board sends the active/standby status information and the switching control information to the standby main control board through the channel formed by the chip stacking with the standby main control board, so as to implement the switching of the main control board. .

4. The protection method of claim 3, further comprising:

After the active main control board is switched with the standby main control board, the service board also detects a link with the standby main control board during the interaction with the standby main control board. status.

5. The protection method of claim 1, further comprising:

Before the protection switching occurs, the service board exchanges information with the active main control board through a channel connected to the active main control board in the aggregation channel.

A protection device for a device, comprising: an active main control board and a standby main control board, wherein a chip stack is used between the main main control board and the standby main control board, and the main Using the main control board and The port of the standby main control board connected to the same service board is aggregated by the port, and the port connected to the main control board and the standby main control board of the service board is aggregated by the port;

The main control board and the standby main control board are configured to switch through a channel formed after the chip stack is formed when protection switching occurs;

The service board is configured to interact with the aggregation channel formed by the port aggregation of the standby main control board.

The protection device according to claim 6, wherein the service board and the standby main control board are interacted by an aggregation channel formed by port aggregation in the following manner:

8. The protection device according to claim 7, wherein the primary main control board and the standby main control board are switched by channels formed after chip stacking in the following manner:

9. The protection device of claim 8 wherein:

The service board is further configured to detect, between the active main control board and the standby main control board, during the interaction with the standby main control board, between the detection and the standby main control board. Link status.

10. The protection device of claim 6 wherein:

The service board is further configured to perform information interaction with the active main control board through a channel connected to the main control board in the aggregation channel before the protection switching occurs.