WO2014101066A1

WO2014101066A1 - Media access control information synchronization method and device

Info

Publication number: WO2014101066A1
Application number: PCT/CN2012/087738
Authority: WO
Inventors: 周广证; 莫伟; 李明家; 谷素琴
Original assignee: 华为技术有限公司
Priority date: 2012-12-27
Filing date: 2012-12-27
Publication date: 2014-07-03
Also published as: CN104322018A

Abstract

The embodiments of the present invention relate to a MAC information synchronization method and device. The method comprises: receiving a data message by a first single board; performing MAC study according to the data message, and generating a first MAC table; extracting first synchronization MAC information according to the first MAC table; packaging the first synchronization MAC information into a first synchronization message; and sending the first synchronization message to a second single board to enable the second single board to acquire the first synchronization MAC information from the first synchronization message. In the information synchronization method and device in the embodiments of the present invention, a first single board performs MAC study according to a received data message, extracts synchronization MAC information from a MAC table, and packages the synchronization MAC information into a first synchronization message to be sent to a second single board, thereby enabling the second single board to acquire the synchronization MAC information, realizing the synchronization of MAC information across boards, efficiently solving the problem that a single board causes burden on a CPU for studying the MAC information, and promoting the network reliability.

Description

Method and device for synchronizing medium access control information

The present invention relates to the field of communications, and in particular, to a method and apparatus for synchronizing media access control information. Background technique

With the development of network technologies, network devices are becoming more and more complex. Media Access Control (MAC) information on devices in the Layer 2 network that needs to learn and guide packet forwarding is also increasing. In order to expand, there are more and more devices with extended Ternary Content Addressable Memory (TCAM).

The complexity of the network makes the network burden more and more heavy. In particular, the processing of cross-board MAC learning forwarding in distributed devices directly affects the performance and reliability of the device.

In the distributed device, the MAC learning method of the prior art is hardware learning. For example, the data stream flows from the upstream board, and the source MAC address of the received packet is learned by the uplink board port. After the MAC learning of the board is completed, the packet is received. Continue to forward to the downstream board through the interconnect port. The downstream board learns the source MAC address of the packet from the interconnect port.

In the above-mentioned cross-board learning, if the downlink board is a board that supports TCAM extended MAC learning, the MAC learning of the external extended TCAM requires the processor to assist learning. The Line Processing Unit (LPU) of the downlink board is used. The learned MAC information is learned into a temporary entry, and the LPU notifies the processor to migrate the learned MAC entry to the extended TCAM, so the processor overhead is required.

After receiving the packet from the interconnection port, the downstream board does not query whether the source MAC address of the packet has been learned in the external TCAM. Instead, the packet is processed by the processor for each packet. The occupancy rate of the device is too high, and the MAC learning function of the external expansion TCAM is poor. When there is a cross-board ETH-TRUNK, that is, there are port interconnections on different boards on the Ethernet TRENK, the packets may not be sent and received on the same link as shown in Figure 1.

For example, when user 1 and user 2 communicate through the inter-board ETH-TRUNK, the packet sent by user 1 passes through the interface board (Line Proces s ing Un it, LPU) of switch B in the ETH-TRUNK. The link between the LPUs of the switch A is sent to the switch A. In the process of forwarding the text, both the LPU 4 and the LPU 2 perform the MAC learning of the user 1;

When user 2 sends a packet to user 1, the load is used on ETH-TRUNK, and the packet is sent to LPU 3 in switch B. However, LPU3 has not performed MAC learning of user 1, so user 1 is not known. The MAC address cannot be directly sent to the user 1 and can only be sent by broadcast, thus greatly reducing the forwarding bandwidth. Summary of the invention

The present invention provides a method and device for synchronizing MAC information, which can use the first synchronization message to synchronize the source MAC information in the obtained data message.

A first aspect of the present invention provides a method for synchronizing media access control MAC information, the method comprising:

The first board receives the data packet.

The first board performs MAC learning according to the data packet to generate a first MAC table.

The first board extracts first synchronization MAC information according to the first MAC table;

The first board encapsulates the first synchronization MAC information into the first synchronization packet; the first board sends the first synchronization packet to the second board, so that the second single The board acquires the first synchronization MAC information from the first synchronization packet.

In a first implementation manner of the first aspect of the present invention, the first board is configured to encapsulate the first synchronization MAC information into the first synchronization message, where the first board is configured according to the first synchronization MAC address. Generating MAC table synchronization information, and encapsulating the MAC table synchronization information into the first synchronization packet.

In conjunction with the first implementation of the first aspect of the invention, the second embodiment of the first aspect of the invention In the current mode, the first board generates the MAC address synchronization information according to the first synchronization MAC information, including: the first board uses the first number of MAC entries as the first synchronization MAC information each time, according to the The first synchronous MAC information generates MAC table synchronization information.

According to the foregoing implementation manners of the first aspect of the present invention, the sending, by the first board, the first synchronization packet to the second board: The first synchronization message.

With reference to the foregoing implementation manners of the first aspect of the present invention, the method further includes: the first board timing extracts the second synchronization MAC information from the local first MAC table, and encapsulates the second synchronization MAC into the second synchronization. The first board sends a second synchronization message to the second board, so that the second board obtains the second synchronization MAC information from the second synchronization packet, according to the packet The second synchronization MAC information updates a second MAC table that is locally saved by the second board.

A second aspect of the present invention provides a method for synchronizing media access control MAC information, where the method includes:

The second board receives the first synchronization message sent by the first board, where the first synchronization message carries the first synchronization MAC information extracted by the first board from the first MAC table.

The second board acquires the first synchronization MAC information carried in the first synchronization packet; the second board updates the second saved by the second board according to the first synchronization MAC information. MAC table.

In the first implementation manner of the second aspect of the present invention, the acquiring, by the second board, the first synchronization MAC information that is carried in the first synchronization packet includes: the second board extracting the first And synchronizing the MAC table synchronization information carried in the packet, and acquiring the first synchronization MAC information according to the first MAC table synchronization information.

With the implementation of the second aspect of the present invention, the method further includes: the second board receives the second synchronization packet periodically sent by the first board, and the second synchronization packet carries the second synchronization. MAC information, the second synchronization MAC information is extracted from the first MAC table by the first board timing; And acquiring, by the second board, the second synchronization MAC information from the second synchronization packet, and updating the locally saved second MAC table according to the second synchronization MAC information.

A third aspect of the present invention provides a device for synchronizing media access control MAC information, the device comprising:

a receiving unit, configured to receive a data packet sent to the first board;

a generating unit, configured to perform MAC learning according to the data packet, to generate a first MAC table, and an extracting unit, configured to extract, according to the first MAC table, first synchronization MAC information;

The encapsulating unit is configured to encapsulate the first synchronous MAC information into the first synchronization packet, and the sending unit is configured to send the first synchronization packet to the second board, so that the second board is The first synchronization MAC information is obtained in the first synchronization packet.

In a first implementation manner of the third aspect, the encapsulating unit is configured to generate MAC table synchronization information according to the first synchronization MAC information, and encapsulate the MAC table synchronization information into the first synchronization packet. in.

With reference to the first implementation manner of the third aspect of the present invention, in a second implementation manner of the third aspect of the present disclosure, the generating unit is specifically configured to use the first quantity of MAC entries as the first synchronous MAC information each time. And generating MAC table synchronization information according to the first synchronization MAC information.

According to the foregoing implementation manners of the third aspect of the present invention, the sending unit is configured to multicast the first synchronization packet to multiple second boards.

With reference to the foregoing implementation manners of the third aspect of the present invention, the extracting unit is further configured to: periodically extract the second synchronous MAC information from the first MAC table, and encapsulate the second synchronous MAC into the second synchronous packet; The sending unit is further configured to send the second synchronization message to the second board, so that the second board obtains the second synchronization MAC information from the second synchronization message, according to the The second synchronization MAC information is used to update the second MAC table locally saved by the second board.

A fourth aspect of the present invention provides a device for synchronizing MAC information of a medium access control, characterized in that the device includes:

a sending unit, configured to receive a first synchronization packet sent by the first board, where the first synchronization packet is sent The first synchronization MAC information that is extracted by the first board from the first MAC table, the acquiring unit, configured to acquire the first synchronous MAC message encapsulated in the first synchronization packet, and the update unit, And updating the locally saved second MAC table according to the first synchronous MAC information. In a first implementation manner of the fourth aspect of the present invention, the acquiring unit is specifically configured to: obtain MAC address synchronization information encapsulated in the first synchronization packet, and acquire the first synchronization MAC according to the MAC table synchronization information. information.

In a second implementation manner of the fourth aspect of the present invention, the receiving unit is further configured to receive a second synchronization packet periodically sent by the first board, where the second synchronization packet carries a second synchronization MAC address. The second synchronization MAC information is extracted by the first board according to the first MAC table; the acquiring unit is further configured to acquire the second synchronization MAC information from the second synchronization message; The updating unit is further configured to update the locally saved second MAC table according to the second synchronization MAC information.

A fifth aspect of the present invention provides a medium access control MAC information synchronization apparatus, the apparatus comprising: a network interface; a processor; a memory; an application physically stored in the memory, the application program includes The processor executes the instructions of the method of the first aspect above.

A sixth aspect of the present invention provides a medium access control MAC information synchronization apparatus, the apparatus comprising: a network interface; a processor; a memory; an application physically stored in the memory, the application program includes The processor executes the instructions of the method of the second aspect above.

In the embodiment of the present invention, the first board performs MAC learning according to the received data packet, extracts synchronous MAC information from the MAC table, and encapsulates the synchronous MAC information into the first synchronization packet and sends the message to the second single The board enables the second board to obtain the synchronous MAC information, and implements the cross-board synchronization of the MAC information, which effectively solves the burden on the CPU caused by the board to learn the MAC information, and improves the reliability of the network. DRAWINGS

1 is a schematic diagram of sending and receiving of a prior art message; 2 is a flowchart of a method for synchronizing MAC information according to an embodiment of the present invention;

3 is a flowchart of another method for synchronizing MAC information according to an embodiment of the present invention;

4 is a schematic structural diagram of a MAC information synchronization apparatus according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of another MAC information synchronization apparatus according to an embodiment of the present invention; FIG.

6 is a schematic structural diagram of a MAC information synchronization apparatus according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of another MAC information synchronization apparatus according to an embodiment of the present invention. detailed description

The technical solution of the present invention will be further described in detail below through the accompanying drawings and embodiments. FIG. 2 is a flowchart of a method for synchronizing MAC information according to an embodiment of the present invention. This embodiment is a processing procedure of a sending end of a synchronous packet. As shown in the figure, the embodiment specifically includes:

Step 101: The first board receives the data packet.

Data packets can be sent by other boards.

Step 102: The first board performs MAC learning according to the data packet to generate a first MAC table. After receiving the data packet, the first board needs to learn MAC. That is, the first board saves the source MAC address and the information such as the VL AN and the port information of the data packet that are carried in the data packet to the first MAC table in the local area of the first board.

Step 103: The first board extracts first synchronization MAC information according to the first MAC table. The first board extracts one or more entries from the locally saved first MAC table as the first synchronization MAC information, and each entry includes a MAC address, port information, and a VLAN.

Step 104: The first board encapsulates the first synchronous MAC information into the first synchronization message. Preferably, the first board generates MAC table synchronization information according to the first synchronization MAC information, and encapsulates the first MAC table synchronization information into a data field of the first synchronization message. The first synchronization packet further carries a packet type, and the packet type indicates that the first synchronization packet is a packet for performing MAC information synchronization.

The MAC table synchronization information includes MCAST_ID, MAC Number, and MAC Entry. MCAST-ID table The multicast group index (occupying two bytes), the MAC N ber represents the number of MAC entries encapsulated in the message (occupying two bytes), and the MAC Entry indicates the MAC entry information encapsulated in the message.

Specifically, to ensure that the first synchronization packet can be correctly transmitted between the boards and correctly identified, as shown in Table 1, the first synchronization packet is defined as follows.

The DA is the destination MAC address, that is, the MAC address of the receiving end of the synchronization text. For example, 0-0-0 can be uniformly filled.

The SA is the source MAC address, which is the MAC address of the first card.

ETYPE is the message type, for example, it is customized to 0x8100. It is used to indicate that the packet is a synchronization packet. The TAG is a VLAN TAG, and the VLAN TAG is fixed to 1. That is, the VLAN to which the synchronization belongs is 1. LEN/TYPE is the length of the first synchronization packet. If the actual length of the MAC table synchronization information encapsulated in the first synchronization packet is smaller than the minimum length of the first synchronization packet (for example, 68), the padding is automatically added later. Use characters.

DATA is a data field used to carry MAC table synchronization information.

Table 1

Step 105: The first board sends the first synchronization message to the second board, so that the second board obtains the first synchronization MAC information from the first synchronization message.

Specifically, the MAC address entries in the first MAC table learned by the first board may be many. If all the learned MAC entries are encapsulated into the same first synchronization packet, the first packet may be encapsulated. The synchronous packet exceeds the allowed length. Therefore, the first synchronization packet can be encapsulated in batch mode.

For example, each time the first number (such as 400) MAC entries are used as the first synchronization MAC information, the MAC table synchronization information is generated according to the first synchronization MAC information, and a first synchronization message is encapsulated and then transmitted. In addition, in order to improve the efficiency of sending the first synchronization packet to the second board, the first board can apply for the multicast group index, and send the first synchronization packet to the multicast group by using the applied multicast index. Other second boards. The other second board can copy the received first synchronization packet and forward it to each interface card.

In addition, as shown in FIG. 2, optionally, the embodiment further includes the following steps:

Step 106: The first board timing extracts the second synchronization MAC information from the first MAC table, and encapsulates the second synchronization MAC information into the second synchronization message.

Each board maintains its own MAC address table. When the entries in the first MAC address table of the first card are aged or deleted, the MAC address table of the first MAC address table is consistent with the other MAC cards. Maintain the MAC table of each board through timing synchronization.

The first board can set an update period according to the number of the MAC entries in the first MAC table, and the first board extracts the MAC entry from the first MAC table as the second synchronous MAC information every time the update time is reached. And encapsulating the second synchronous MAC information into the second synchronization packet.

The second synchronization packet further carries a packet type, and the packet type indicates that the second synchronization packet is a packet for performing MAC information synchronization.

Step 107: The first board sends the second synchronization packet to the second board, so that the second board obtains the second synchronization MAC information from the second synchronization packet, according to the second board. The second synchronization MAC information updates a second MAC table that is locally saved by the second board.

When a plurality of second boards are present, the first board sends the second synchronization packet to the plurality of second boards in a multicast manner, so as to avoid sending multiple second synchronization packets. .

FIG. 3 is a flowchart of a method for synchronizing another MAC information according to an embodiment of the present invention. In this embodiment, the processing procedure of the receiving end of the synchronous packet is as shown in the figure.

Step 201: The second board receives the first synchronization message sent by the first board, where the first synchronization message carries the first synchronization MAC information extracted by the first board from the first MAC table.

The first synchronization packet is the first synchronization packet sent by the first board in the foregoing step 105. The first synchronization MAC information includes one or more MAC entries, and each MAC entry includes a MAC address. Address, port information, and VLAN.

In another embodiment, the first synchronization message carries first MAC table synchronization information generated by the first synchronization MAC information.

The first synchronization packet further carries a packet type, and the packet type indicates that the first synchronization packet is a packet for performing MAC information synchronization.

Step 202: The second board acquires the first synchronization MAC information carried in the first synchronization packet. The second board obtains the first MAC table synchronization information from the DATA field of the first synchronization message, and acquires the first synchronization MAC information according to the first MAC table synchronization information.

Step 203: The second board updates the second MAC table saved by the second board according to the first synchronization MAC information.

As shown in FIG. 3, optionally, the embodiment further includes the following steps:

Step 204: The second board receives the second synchronization packet periodically sent by the first board, where the second synchronization packet carries the second synchronization MAC information, where the second synchronization MAC information is timed by the first board. Extracted from the first MAC table.

The process of generating the second synchronization message may refer to step 106.

Step 205: The second board obtains the second synchronization MAC information from the second synchronization packet, and updates the locally saved second MAC table according to the second synchronization MAC information.

The second board obtains the second MAC table synchronization information from the second synchronization packet, thereby obtaining the second

The second synchronization MAC information in the MAC table synchronization information is used to update the locally saved second MAC table by using the second synchronization MAC information, so that the second MAC table locally on the second board and the first MAC of the first board The table is consistent.

In the information synchronization method of the embodiment of the present invention, the first board performs MAC learning according to the received data packet, extracts first synchronization MAC information from the first MAC table, and encapsulates the first synchronization MAC information into the first A synchronization packet is sent to the second board, so that the second board obtains the first The MAC information is used to implement the cross-board synchronization of the MAC information, which effectively solves the CPU burden caused by the board in order to learn the MAC information, and improves the reliability of the network. 4 is a schematic structural diagram of a device for synchronizing MAC information according to an embodiment of the present invention. In this embodiment, a device for synchronizing MAC information is a device for transmitting a synchronization message, and the device is configured to perform the method shown in FIG. 2, and specifically includes: a receiving unit. 11. Generating unit 12, extracting unit 13, encapsulating unit 14, and transmitting unit 15.

The receiving unit 11 is configured to receive a data packet sent to the first board, and the generating unit 12 is configured to perform MAC learning according to the data packet to generate a first MAC table, and the extracting unit 13 is configured to use, according to the first The MAC table extracts the first synchronization MAC information, the encapsulating unit 14 is configured to encapsulate the first synchronization MAC information into the first synchronization packet, and the sending unit 15 is configured to send the first synchronization report to the second board. And the second board obtains the first synchronization MAC information from the first synchronization packet.

Optionally, the encapsulating unit 14 is configured to generate MAC table synchronization information according to the first synchronization MAC information, and encapsulate the MAC table synchronization information into the first synchronization packet.

Optionally, the generating unit 12 is specifically configured to use the first number of MAC entries as the first synchronization MAC information, and generate MAC table synchronization information according to the first synchronization MAC information.

Optionally, the sending unit 15 is configured to multicast the first synchronization packet to multiple second boards.

Specifically, the extracting unit 13 is further configured to periodically extract a second synchronization from the first MAC table.

The MAC information is encapsulated in the second synchronization packet, and the sending unit 15 is further configured to send the second synchronization packet to the second board, so that the second The board obtains the second synchronization MAC information from the second synchronization packet, and updates the second MAC table locally saved by the second board according to the second synchronization MAC information.

5 is a schematic structural diagram of a device for synchronizing MAC information according to an embodiment of the present invention. In this embodiment, a device for synchronizing MAC information is a device for receiving a synchronization message, and the device is configured to perform the method shown in FIG. Specifically, it includes: a receiving unit 21, an obtaining unit 22, and an updating unit 23.

The receiving unit 21 is configured to receive a first synchronization packet that is sent by the first board, where the first synchronization packet carries the first synchronization MAC information that is extracted by the first board from the first MAC table, where the a synchronization MAC address includes one or more MAC entries; an obtaining unit 22, configured to acquire the first synchronization MAC information carried in the first synchronization packet, and an update unit 23, configured to use, according to the first synchronization The MAC information updates the locally saved second MAC table.

Optionally, the acquiring unit 22 is configured to obtain the MAC table synchronization information carried in the first synchronization packet, and obtain the first synchronization MAC information according to the MAC table synchronization information.

Optionally, the receiving unit 21 is further configured to receive a second synchronization packet that is sent by the first board at a timing, where the second synchronization packet carries second synchronization MAC information, where the second synchronization MAC information is configured by The first board timing is extracted according to the first MAC table; the acquiring unit 22 is further configured to acquire the second synchronization MAC information from the second synchronization packet; the updating unit is further configured to The second synchronization MAC information updates the locally saved second MAC table.

The information synchronization device of the embodiment of the present invention receives the first synchronization packet and the second synchronization packet sent by the first board through the second board, and updates the second MAC table locally saved by the second board to implement MAC information. The cross-board synchronization effectively solves the burden on the CPU caused by the board to learn MAC information and improves the reliability of the network.

FIG. 6 is a schematic structural diagram of a device for synchronizing MAC information according to an embodiment of the present invention. As shown in the figure, the embodiment includes a network interface 61, a processor 62, and a memory 63. The system bus 64 is used to connect the network interface 61, the processor 62, and the memory 63.

The network interface 61 is for communicating with an external device.

The memory 63 may be a persistent storage such as a hard disk drive and a flash memory having a software module and a device driver. The software modules are capable of executing the various functional modules of the above described method of the present invention; the device drivers can be network and interface drivers.

At startup, these software components are loaded into memory 63 and then accessed by processor 62 and execute instructions of the following functions: The first board receives the data packet.

The first board performs MAC learning according to the data packet to generate a first MAC table. The first board extracts first synchronization MAC information according to the first MAC table.

The first board encapsulates the first synchronization MAC information into a first synchronization message;

The first board sends the first synchronization message to the second board, so that the second board obtains the first synchronization MAC information from the first synchronization message.

The above functions and instructions can be extended according to Figure 2 and its corresponding description.

Optionally, the first board is configured to encapsulate the first synchronization MAC information into the first synchronization message, where the first board generates MAC table synchronization information according to the first synchronization MAC information, where The MAC table synchronization information is encapsulated into the first synchronization message.

Optionally, the generating, by the first board, the MAC address synchronization information according to the first synchronization MAC information, that: the first board uses the first number of MAC entries as the first synchronization MAC information each time, according to the The first synchronous MAC information generates MAC table synchronization information.

Optionally, the sending, by the first board, the first synchronization packet to the second board includes: the first board multicasting, sending, to the multiple second boards, the first synchronization message. Order:

The first board periodically extracts the second synchronization MAC information from the local first MAC table, and encapsulates the second synchronization MAC into the second synchronization message.

The first board sends a second synchronization message to the second board, so that the second board obtains the second synchronization MAC information from the second synchronization packet, according to the first The second synchronous MAC information updates the second MAC table locally saved by the second board.

FIG. 7 is a schematic structural diagram of a MAC information synchronization apparatus according to an embodiment of the present invention. As shown in the figure, the embodiment includes a network interface 71, a processor 72, and a memory 73. The system bus 74 is used to connect the network interface 71, the processor 72, and the memory 73.

The network interface 71 is for communicating with an external device. The memory 73 may be a persistent storage such as a hard disk drive and a flash memory having a software module and a device driver therein. The software modules are capable of performing the various functional modules of the above described method of the present invention; the device drivers can be network and interface drivers.

At startup, these software components are loaded into memory 73 and then accessed by processor 72 and execute the instructions of the following process:

The second board receives the first synchronization message sent by the first board, where the first synchronization message carries the first synchronization MAC information that is extracted by the first board from the first MAC table.

The second board acquires the first synchronization MAC information encapsulated in the first synchronization packet; the second board updates the second saved by the second board according to the first synchronization MAC information. MAC table.

The above functions and instructions can be extended according to Figure 3 and its corresponding description. Optionally, the acquiring, by the second board, the first synchronization MAC information encapsulated in the first synchronization packet includes: the second board extracting a MAC table synchronization carried in the first synchronization packet And acquiring the first synchronous MAC information according to the first MAC table synchronization information. The second board receives the second synchronization packet that is periodically sent by the first board, where the second synchronization packet carries the second synchronization MAC information, and the second synchronization MAC information is used by the first synchronization packet. Board timing is extracted from the first MAC table;

The second board obtains the second synchronization MAC information from the second synchronization packet, and updates the locally saved second MAC table according to the second synchronization MAC information.

In the foregoing embodiment of the present invention, the first board performs MAC learning according to the received data packet, extracts first synchronization MAC information from the first MAC table, and encapsulates the first synchronization MAC information into the first synchronization report. The method is sent to the second board, so that the second board obtains the first synchronous MAC information, and the board information is synchronized across the board, which effectively solves the burden on the CPU caused by the board to learn the MAC information, and improves the load. Network reliability.

Those skilled in the art will further appreciate that the embodiments disclosed herein are incorporated The unit and algorithm steps of the various examples described can be implemented in electronic hardware, computer software, or a combination of both. In order to clearly illustrate the interchangeability of hardware and software, the foregoing description has been generally described in terms of function. The composition and steps of each example. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods to implement the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present invention.

The steps of a method or algorithm described in connection with the embodiments disclosed herein can be implemented in hardware, a software module executed by a processor, or a combination of both. Software modules can be placed in random access memory (RAM), memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or technical field Any other form of storage medium known.

The above described embodiments of the present invention are further described in detail, and the embodiments of the present invention are intended to be illustrative only. The scope of the protection, any modifications, equivalents, improvements, etc., made within the spirit and scope of the invention are intended to be included within the scope of the invention.

Claims

claims

1. A method for synchronizing media access control MAC information, characterized in that the method includes: the first single board receives a data message;

The first board performs MAC learning based on the data message and generates a first MAC table;

The first single board extracts first synchronization MAC information according to the first MAC table;

The first board encapsulates the first synchronization MAC information into a first synchronization message; the first board sends the first synchronization message to the second board, so that the second unit The board obtains the first synchronization MAC information from the first synchronization message.

2. The synchronization method of MAC information according to claim 1, characterized in that the first board encapsulates the first synchronization MAC information into a first synchronization message including: the first board encapsulates the first synchronization MAC information according to the The first synchronized MAC information generates MAC table synchronized information, and the MAC table synchronized information is encapsulated into the first synchronized message.

3. The synchronization method of MAC information according to claim 2, characterized in that, the first single board generating MAC table synchronization information according to the first synchronized MAC information includes: the first single board will generate the MAC table synchronization information each time. A number of MAC table entries are used as first synchronized MAC information, and MAC table synchronization information is generated according to the first synchronized MAC information.

4. The method for synchronizing MAC information according to any one of claims 1-3, characterized in that: sending the first synchronization message by the first board to the second board includes: the first board The single board multicasts the first synchronization message to multiple second single boards.

5. The MAC information synchronization method according to any one of claims 1 to 4, characterized in that the method further includes:

The first single board regularly extracts the second synchronization MAC information from the local first MAC table, and encapsulates the second synchronization MAC into a second synchronization message;

The first board sends a second synchronization message to the second board, so that the second board obtains the second synchronization MAC information from the second synchronization message, according to the second synchronization message. The second synchronized MAC information updates the second MAC table stored locally on the second board.

6. A method for synchronizing media access control MAC information, characterized in that the method includes: the second board receives the first synchronization message sent by the first board, and the first synchronization message carries the first synchronization message. The first synchronized MAC information extracted by a single board from the first MAC table;

The second board obtains the first synchronization MAC information carried in the first synchronization message; the second board updates the second synchronization MAC information saved by the second board according to the first synchronization MAC information.

MAC table.

7. The synchronization method of MAC information according to claim 6, wherein the second board obtains the first synchronization MAC information carried in the first synchronization message including: the second unit: The board extracts the MAC table synchronization information carried in the first synchronization message, and obtains the first synchronization MAC information according to the first MAC table synchronization information.

8. The MAC information synchronization method according to claim 6 or 7, characterized in that the method further includes:

The second board receives a second synchronization message sent regularly by the first board. The second synchronization message carries second synchronization MAC information. The second synchronization MAC information is obtained by the first board. Extract from the first MAC table regularly;

The second single board obtains the second synchronization MAC information from the second synchronization message, and updates the locally saved second MAC table according to the second synchronization MAC information.

9. A device for synchronizing media access control MAC information, characterized in that the device includes: a receiving unit, configured to receive a data message sent to the first board;

A generating unit, configured to perform MAC learning based on the data message and generate a first MAC table; an extraction unit, configured to extract the first synchronized MAC information based on the first MAC table;

An encapsulation unit, used to encapsulate the first synchronization MAC information into a first synchronization message; A sending unit, used to send the first synchronization message to the second board, so that the second board can The first synchronization MAC information is obtained from the first synchronization message.

10. The device for synchronizing MAC information according to claim 9, wherein the encapsulating unit is specifically configured to generate MAC table synchronization information according to the first synchronized MAC information, and convert the MAC Table synchronization information is encapsulated into the first synchronization message.

11. The device for synchronizing MAC information according to claim 10, wherein the generating unit is specifically configured to use a first number of MAC table entries as first synchronized MAC information each time, according to the first synchronized MAC The information generates MAC table synchronization information.

12. The device for synchronizing MAC information according to any one of claims 9-11, wherein the sending unit is specifically configured to multicast the first synchronization message to multiple second boards.

13. The MAC information synchronization device according to any one of claims 9-12, characterized by:

The extraction unit is also configured to regularly extract second synchronization MAC information from the first MAC table, and encapsulate the second synchronization MAC into a second synchronization message;

The sending unit is further configured to send the second synchronization message to the second board, so that the second board obtains the second synchronization MAC information from the second synchronization message, according to The second synchronized MAC information updates the second MAC table stored locally on the second board.

14. A device for synchronizing media access control MAC information, characterized in that the device includes:

A sending unit, configured to receive a first synchronization message sent by the first board, where the first synchronization message carries the first synchronization MAC information extracted by the first board from the first MAC table;

An acquisition unit, configured to acquire the first synchronization MAC information encapsulated in the first synchronization message; and an update unit, configured to update the locally saved second MAC table according to the first synchronization MAC information.

15. The device for synchronizing MAC information according to claim 14, wherein the obtaining unit is specifically configured to extract the MAC table synchronization information encapsulated in the first synchronization message, and obtain the MAC table synchronization information according to the The first synchronized MAC information.

16. The MAC information synchronization device according to claim 14 or 15, characterized in that: the receiving unit is also used to receive a second synchronization message sent regularly by the first single board, and the second synchronization message The text carries second synchronized MAC information, and the second synchronized MAC information is regularly extracted by the first board according to the first MAC table; The obtaining unit is also used to obtain the second synchronization MAC information from the second synchronization message; the update unit is also used to update the locally saved second MAC table according to the second synchronization MAC information. .

17. A device for synchronizing media access control MAC information, characterized in that the device includes:

Network Interface;

processor;

memory;

An application program physically stored in the memory, the application program including instructions for causing the processor to perform the following processes:

The first board receives the data message;

The first board performs MAC learning based on the data message and generates a first MAC table; the first board extracts first synchronization MAC information based on the first MAC table;

The first single board encapsulates the first synchronization MAC information into a first synchronization message;

18. The device for synchronizing MAC information according to claim 17, wherein the first board encapsulates the first synchronized MAC information into a first synchronization message including: the first board encapsulates the first synchronized MAC information according to the The first synchronized MAC information generates MAC table synchronized information, and the MAC table synchronized information is encapsulated into the first synchronized message.

19. The device for synchronizing MAC information according to claim 18, wherein the first board generating MAC table synchronization information according to the first synchronized MAC information includes: each time the first board generates the MAC table synchronization information, A number of MAC table entries are used as first synchronized MAC information, and MAC table synchronization information is generated according to the first synchronized MAC information.

20. The device for synchronizing MAC information according to any one of claims 17 to 19, characterized in that: sending the first synchronization message by the first board to the second board includes: the first one The board multicasts the first synchronization message to multiple second boards.

21. The device for synchronizing MAC information according to any one of claims 17-21, wherein the first single board regularly extracts the second synchronized MAC information from the local first MAC table, and synchronizes the second synchronized MAC information with the second synchronized MAC information. MAC encapsulates the second synchronization message;

22. A device for synchronizing media access control MAC information, characterized in that the device includes:

Network Interface;

processor;

memory;

The second board receives the first synchronization message sent by the first board, and the first synchronization message carries the first synchronization MAC information extracted by the first board from the first MAC table;

The second board obtains the first synchronization MAC information encapsulated in the first synchronization message; the second board updates the second synchronization MAC information stored by the second board according to the first synchronization MAC information. MAC table.

23. The device for synchronizing MAC information according to claim 24, wherein the second single board obtains the first synchronized MAC information encapsulated in the first synchronization message including: the second single board The board extracts the MAC table synchronization information carried in the first synchronization message, and obtains the first synchronization MAC information according to the first MAC table synchronization information.

24. The MAC information synchronization device according to claim 22 or 23, characterized in that, The second single board receives a second synchronization message sent regularly by the first single board. The second synchronization message carries second synchronization MAC information. The second synchronization MAC information is provided by the first unit. Board timing is extracted from the first MAC table;