WO2019011247A1 - Mac地址信息同步方法、设备及存储介质 - Google Patents

Mac地址信息同步方法、设备及存储介质 Download PDF

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Publication number
WO2019011247A1
WO2019011247A1 PCT/CN2018/095183 CN2018095183W WO2019011247A1 WO 2019011247 A1 WO2019011247 A1 WO 2019011247A1 CN 2018095183 W CN2018095183 W CN 2018095183W WO 2019011247 A1 WO2019011247 A1 WO 2019011247A1
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Prior art keywords
mac address
detecting device
conflict
message
conflict detecting
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PCT/CN2018/095183
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English (en)
French (fr)
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敖婷
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中兴通讯股份有限公司
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements, protocols or services for addressing or naming
    • H04L61/50—Address allocation
    • H04L61/5046—Resolving address allocation conflicts; Testing of addresses
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements, protocols or services for addressing or naming
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/10—Protocols in which an application is distributed across nodes in the network
    • H04L67/1095—Replication or mirroring of data, e.g. scheduling or transport for data synchronisation between network nodes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/50—Network services
    • H04L67/56—Provisioning of proxy services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2101/00—Indexing scheme associated with group H04L61/00
    • H04L2101/60—Types of network addresses
    • H04L2101/618—Details of network addresses
    • H04L2101/622—Layer-2 addresses, e.g. medium access control [MAC] addresses

Definitions

  • the present disclosure relates to the field of communications technologies, and in particular, to a MAC address information synchronization method, device, and storage medium.
  • the Institute of Electrical and Electronics Engineers (IEEE) standards organization proposed a concept of a local MAC address, that is, the MAC address is no longer globally unique in some network environments.
  • IEEE Institute of Electrical and Electronics Engineers
  • the related art provides a self-declared solution, that is, a device that needs to apply for a MAC address, assigns a MAC to itself according to a certain policy, and then announces the network to the network, and if no conflict message is received, the device The stated MAC address will be used as its own MAC address.
  • the network device near the edge in the network sets a proxy to determine whether there is a MAC address conflict. If there is no address conflict, the announcement notification message needs to be forwarded in the network.
  • the edge proxy device does not detect conflicts, it still needs to be sent to the entire network for detection, thereby increasing the broadcast packets of the entire network.
  • the broadcast packets used to affirm the MAC address will explode, which seriously affects the forwarding efficiency of the network.
  • this method will make the process of address application more long, and it also brings uncontrollable risks to the security of the terminal.
  • a method for synchronizing MAC address information includes: storing, when a user-side MAC address is added, the user-side MAC address information in a first MAC address conflict detecting device; and the first MAC The address conflict detecting device sends a MAC address synchronization message to the second MAC address conflict detecting device to update the network side MAC address information stored in the second MAC address conflict detecting device.
  • a MAC address information synchronizing apparatus including a memory and a processor, the memory storing a computer program, when the computer program is executed by the processor, the processor executes according to the present A public MAC address synchronization method.
  • a computer readable storage medium having stored thereon a computer program, the at least one processor performing MAC address synchronization according to the present disclosure when the computer program is executed by at least one processor method.
  • FIG. 1 is a flowchart of a MAC address information synchronization method according to an embodiment of the present disclosure
  • FIG. 2 is a schematic diagram of a network to which a MAC address information synchronization method according to an embodiment of the present disclosure may be applied;
  • 3A and 3B are diagrams showing a format of MAC address data in a MAC address synchronization message according to an embodiment of the present disclosure
  • FIG. 4 is another network diagram of a method for synchronizing MAC address information according to an embodiment of the present disclosure
  • FIG. 5 is another network diagram in which a MAC address information synchronization method according to an embodiment of the present disclosure may be applied;
  • FIG. 6 is a schematic structural diagram of a MAC address information synchronization apparatus according to an embodiment of the present disclosure.
  • FIG. 1 is a flowchart of a method of MAC address information synchronization according to an embodiment of the present disclosure.
  • the MAC address information synchronization method may include steps S101 and S102.
  • step S101 when the user side MAC address is added, the first MAC address conflict detecting device stores the user side MAC address information.
  • step S102 the first MAC address conflict detecting device sends a MAC address synchronization message (hereinafter simply referred to as "address synchronization message") to the second MAC address conflict detecting device to update the storage in the second MAC address conflict detecting device.
  • address synchronization message a MAC address synchronization message
  • the method may further include: upon receiving the MAC address synchronization message of the second MAC address conflict detecting device, the first MAC address conflict detecting device updates the station according to the received MAC address synchronization message The network side MAC address information stored by the first MAC address conflict detecting device.
  • the local MAC address conflict detecting device ie, the first MAC address conflict detecting device
  • stores the user side MAC address information and sends the user MAC address information to the remote MAC address.
  • the conflict detecting device ie, the second MAC address conflict detecting device
  • the network side MAC address information stored by the local MAC address conflict detection device is updated according to the received MAC address synchronization message to synchronize the MAC address information, thereby implementing fast collision detection of the MAC address and the MAC address.
  • the traffic of broadcast messages in the network is greatly reduced, the efficiency of finally obtaining MACs of the devices is improved, and the availability and efficiency of the overall solution are improved.
  • the first and second MAC address conflict detecting devices may be a MAC address conflict detecting agent and/or a MAC address conflict detecting server.
  • agent MAC address conflict detection agent
  • the device When the device wants to self-declare the MAC address, the device first sends a registration message for the MAC address.
  • the registration message includes a message ID for uniquely identifying the message, and a block of MAC addresses that need to be registered.
  • the device After receiving the registration message, the device saves the correspondence between the message ID and the ingress port, and checks the abbreviated MAC address to determine whether it conflicts with the MAC address of the device. If there is a conflict, the device sends a conflict failure message; If there is no conflict, the registration message is forwarded or the registration message is terminated.
  • the network device is set up with a proxy, you need to check the MAC address that has been declared to be registered on the device. If the MAC address of the device is not stored in the device, the registration message is registered in the device, and the mapping relationship is maintained with the receiving port, and the registration message is forwarded to other ports; if the device has a declared MAC address. The device needs to return a conflict failure message and no longer forwards the registration message to the port mapped with the conflicting MAC address. If the device does not have a proxy set, the registration message is forwarded directly to other ports.
  • the conflict failure message includes a message ID that is consistent with the received registration message, and a conflicting MAC address block.
  • the device When the device receives the conflict failure message, it reselects the MAC address block according to the message ID and the content of the conflicting MAC address block, and changes the message to resend the registration message; if there is no conflict, the MAC address declaration message is sent.
  • the affirmative message includes a unique message ID and a block of MAC addresses that need to be declared.
  • the device After receiving the declaration message, the device stores the MAC address in the message according to the situation, and updates the forwarding table of the device according to the received MAC address declaration message and the ingress port.
  • the proxy device does not detect the conflict, it still needs to be sent to the entire network for detection, which increases the broadcast message of the entire network.
  • the agent that performs the conflict detection on the device MAC address synchronizes the data, and the information can be shared among the agents, so that the agent close to the edge detects the conflict as soon as possible and makes the promptly Reply, thereby improving the efficiency of the device to finally obtain the MAC, and can improve the security of the network.
  • the first MAC address conflict detecting apparatus may store the user side MAC address information and the network side MAC address information in a preset database; and when receiving the registered MAC address, The first MAC address conflict detecting device may perform collision detection on the registered MAC address in the database.
  • the first MAC address detecting device when the first MAC address detecting device receives the user side MAC address declaration message, if the user side MAC address in the declaration message and the user side MAC stored in the first MAC address detecting device If the address information and the network side MAC address information do not conflict, the new user side MAC address is confirmed; if the conflict occurs, the MAC address conflict message is sent.
  • a MAC address conflict detection proxy is set in the network, that is, whether a MAC address registered in the received MAC address registration message is judged whether there is a conflict, and if there is a conflict, a MAC address conflict message is sent; If it does not exist, the registration message will continue to be forwarded in the network.
  • the MAC address in the affirmative message is saved after receiving the declaration message. This situation can lead to too many broadcast packets on the network and occupy a large amount of network resources.
  • MAC address information that has been used by the abbreviated message is synchronized between the agents, thereby ensuring that the agent closer to the user side can respond to the MAC address registration message more quickly.
  • data synchronization and information sharing between agents may include: 1. direct synchronization between agents; 2. all agents implement synchronization between agents through a server; 3. between servers Synchronize.
  • the system architecture for MAC address synchronization can include a database (ie, a local database of MAC address information) and a synchronization module.
  • the MAC address information local database is used to store the MAC address passed through the authentication message and the MAC address synchronized from other remote databases.
  • the synchronization module can run a local MAC address allocation protocol (LAAP), send a synchronization message according to the change of the local database MAC address information, and update the local database according to the MAC address in the received synchronization message to ensure the consistency of the database.
  • LAAP local MAC address allocation protocol
  • FIG. 2 is a network diagram in which a MAC address information synchronization method according to an embodiment of the present disclosure may be applied.
  • each proxy device receives a declaration message of the MAC address, and saves the MAC address in the MAC address database of the proxy device.
  • the synchronization process of the MAC address may include the following steps 11 to 13.
  • step 11 the network devices S1, S2, and S4 obtain their own MAC addresses through the MAC address registration message and the MAC address declaration message, and the MAC addresses are stored in the proxy device B1 connected to the network devices (ie, the first MAC address conflict detection device) in the local MAC address database. Shown in the figure as attribute U.
  • FIG. 3A and FIG. 3B respectively show a format diagram of MAC address data in a MAC address synchronization message according to an embodiment of the present disclosure.
  • Figure 3A shows a synchronized set of consecutive MAC address spaces.
  • Figure 3B shows a discrete block of MAC addresses indicating the MAC address that has been occupied and the point in time at which the address was occupied.
  • the proxy device B2 (i.e., the second MAC address collision detecting device) saves the MAC address of the network device S3 in the local MAC address data through the registration message and the declaration message of the network device S3. For the address of the newly added network device S3, the proxy device B2 sends a MAC address synchronization message to the entire network.
  • the proxy device B1 receives the MAC address synchronization message of the proxy device B2 and saves the MAC address advertised in the synchronization message in the database as the network side MAC address. Shown in the figure as attribute N.
  • the proxy device B2 receives the MAC address synchronization message of the proxy device B1, and stores it in the local data according to the MAC address in the synchronization message as the network side MAC address.
  • step 13 when the proxy devices B1 and B2 receive the MAC address registration message again, the local MAC address database is first checked to see if there is a same MAC address. If there is a conflicting MAC address, a MAC address conflict message is sent to the source. Device; otherwise the proxy device terminates the MAC address registration message.
  • the step of the first MAC address conflict detecting device sending a MAC address synchronization message to the second MAC address conflict detecting device may include: not learning the MAC address conflict detecting device of the network Before the topology, the first MAC address conflict detecting device broadcasts the MAC address synchronization message to the network; and after learning the MAC address conflict detection device topology of the network, the first MAC address conflict detecting device goes to the second The MAC address conflict detection device unicasts the MAC address synchronization message.
  • the first MAC address collision detecting device may periodically receive a MAC address synchronization message broadcast by the second MAC address collision detecting device.
  • the MAC address synchronization message of the proxy device may be periodically transmitted periodically for discovering different proxy device neighbors.
  • the proxy devices B1 and B2 broadcast a synchronization message on the entire network to ensure that they can be discovered.
  • the destination address of the MAC address synchronization message is the broadcast address.
  • the address is the address of the device.
  • the proxy device B1 learns the proxy device neighbor B2. For example, when the synchronization message is sent for three preset cycle times, if the MAC address synchronization message of the new proxy device is not received, the topology is stable.
  • the proxy device B1 learns the topology of the proxy device of the network and sets B2 as its own neighbor.
  • the proxy device B1 uses the address of the proxy device B2 as the destination address to implement unicast transmission, thereby effectively reducing the number of MAC address broadcast packets in the network, and greatly improving the network forwarding efficiency.
  • FIG. 4 is another network diagram in which a MAC address information synchronization method according to an embodiment of the present disclosure may be applied.
  • the MAC The address synchronization method may further include: the first MAC address conflict detecting device sends a MAC address synchronization message to the MAC address server, so that the MAC address server sends the MAC address synchronization message to the second MAC address conflict. And detecting, by the first MAC address conflict detecting device, a MAC address synchronization message of the second MAC address conflict detecting device from the MAC address server.
  • MAC address synchronization is performed not only between the proxy devices but also between the proxy device and the MAC address server.
  • the server S shown in Fig. 4 is a server dedicated to MAC address allocation and MAC address collision detection.
  • the flow of MAC address synchronization may include steps S21 to S23.
  • the proxy device B1 obtains the MAC address of the user side through the MAC address declaration message of the network devices S1, S2, and S4.
  • the proxy device B1 adds a user-side MAC address and actively sends a synchronization message of the MAC address to the MAC address server S connected thereto.
  • step 23 the server S receives the synchronization message of the MAC address sent by the proxy device B1, obtains the newly added MAC address, and puts the newly added MAC address into the synchronization message, and sends it to other proxy devices, for example, Agent device B2.
  • the MAC address synchronization message received by the first MAC address conflict detecting device may carry the MAC address information received by the second MAC address conflict detecting device according to the claimed MAC address data.
  • the first MAC address conflict detection device saves the MAC address data carried in the received MAC address synchronization message as the first MAC address conflict when receiving the MAC address synchronization message of the second MAC address conflict detection device. Detects the network side MAC address information of the device.
  • the user side MAC address information of the first MAC address conflict detecting device when it is detected that the user side MAC address information of the first MAC address conflict detecting device has MAC address data that conflicts with the MAC address synchronization message received by the first MAC address conflict detecting device, a sequence of the first receiving time carried in the MAC address synchronization message and the second receiving time of the conflicting MAC address abbreviating message; and the MAC address information received by the first MAC address conflict detecting device according to the determination result
  • the MAC address data is saved in the network side MAC address information of the first MAC address conflict detecting device.
  • the conflicting MAC address data is not saved in the network side MAC address information of the first MAC address conflict detecting device. If the first receiving time is earlier than the second receiving time, storing the conflicting MAC address data from the user side network MAC address information of the first MAC address conflict detecting device to the first The network side MAC address information of the MAC address conflict detection device, and modifying the receiving time of the conflicting MAC address data is the first receiving time.
  • FIG. 5 is another network diagram in which a MAC address information synchronization method according to an embodiment of the present disclosure may be applied.
  • the proxy device B2 and the proxy devices B1 and B4 are connected in the same local area network.
  • the MAC address declaration message sent by the network device S4 may be a broadcast message, which is received by the proxy devices B1 and B2.
  • the MAC address of the network device S4 is stored as a user side MAC address in the local databases of the proxy devices B1 and B2, respectively. Since the time at which the proxy devices B1 and B2 receive this MAC address is different, there is a difference in the time at which the respective local databases are stored. At this time, the proxy devices B1 and B2 do not know that there is such a conflict, and respectively advertise the MAC addresses of the network device S4 to each other through the MAC address synchronization message.
  • the proxy devices B1 and B2 respectively save the network side MAC address to the local database, if a conflict is found, the corresponding timestamp is checked, and the timestamp is selected to be saved in the local database at an earlier time.
  • the proxy device B2 receives the MAC address synchronization message from the proxy device B1 containing the network device S4. When detecting the conflict, the proxy device B2 finds that the MAC address of the network device S4 has been included in the user side MAC address information stored in the local database. After the collision occurs, the proxy device B2 compares the timestamp T5 of the MAC address of the network device S4 stored in the local database with the timestamp T3 of the MAC address of the network device S4 in the synchronization message sent by the proxy device B1.
  • T5 is earlier than T3, the local database is not revised; if T5 is later than T3, the MAC address of the network device S4 is modified to the related information of the network device S4 included in the synchronization message, for example, the network device S4 in the local database
  • the time stamp of the MAC address is changed to T3, and the MAC address of the network device S4 is stored as the network side MAC address.
  • the proxy device can be divided into a global proxy device and a local proxy device, and only the global proxy device is synchronized with the MAC address.
  • Neighbor discovery is performed between the global proxy devices. After receiving the declaration message of the MAC address, the MAC address in the declaration message can be saved in the local database, and the newly added MAC address is advertised to other globals through the synchronization message. Proxy device neighbors, and terminate the MAC address declaration message, no further spread. For local proxy devices, no synchronization is performed, but the local proxy device can continue to forward the received MAC address declaration message to the entire network.
  • the neighbor synchronization can be performed by using the periodic synchronization message. After the neighbor topology is discovered, the broadcast synchronization message is sent to the unicast synchronization message and sent to different proxy device neighbors.
  • the synchronization message can carry a new MAC address. If no new MAC address is added, the MAC address in the synchronization message is empty.
  • the proxy device or the server After receiving the synchronization message, the proxy device or the server saves the MAC address carried in the synchronization message in the local database. Therefore, when the proxy device or the server receives the MAC address declaration message sent by the network device, the conflict can be detected from the local database.
  • FIG. 6 is a schematic structural diagram of a MAC address information synchronization apparatus according to an embodiment of the present disclosure.
  • a MAC address information synchronization device may include a memory 60 and a processor 62 in accordance with an embodiment of the present disclosure.
  • the memory 60 stores a computer program that, when executed by the processor 62, can perform the MAC address synchronization method in accordance with various embodiments of the present disclosure.
  • a computer readable storage medium having stored thereon a computer program, the computer program being executed by at least one processor, the at least one processor executing the various embodiments according to the above-described embodiments of the present disclosure MAC address synchronization method.
  • the computer readable storage medium may be a RAM memory, a flash memory, a ROM memory, an EPROM memory, an EEPROM memory, a register, a hard disk, a removable hard disk, a CD-ROM, or any other form of storage medium known in the art.
  • a storage medium can be coupled to the processor to enable the processor to read information from, and write information to, the storage medium; or the storage medium can be an integral part of the processor.
  • the processor and the storage medium may be located in an application specific integrated circuit.

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Abstract

本公开提供了一种MAC地址信息同步方法、设备及存储介质。所述方法包括：在新增用户侧MAC地址时，在第一MAC地址冲突检测设备存储所述用户侧MAC地址信息；以及所述第一MAC地址冲突检测设备向第二MAC地址冲突检测设备发送MAC地址同步消息，以更新在所述第二MAC地址冲突检测设备中存储的网络侧MAC地址信息。

Description

MAC地址信息同步方法、设备及存储介质 技术领域
本公开涉及通信技术领域，具体地涉及一种MAC地址信息同步方法、设备及存储介质。
背景技术
数据中心(包括服务器、存储和网络)规模的扩大和虚拟化的引入，带来了物理设备的增加，同时带来了虚拟设施的指数增长，从而导致了媒体访问控制(Media Access Control/Medium Access Control，MAC)地址的消耗急剧上升。
针对目前MAC地址出现的问题，电气和电子工程师协会(Institute of Electrical and Electronics Engineers，IEEE)标准组织提出了一种本地MAC地址的概念，即，MAC地址在一些网络环境下不再是全球唯一的48位地址，而是一种本地化的地址。
为此，相关技术中提供一种自申明的方案，即，需要申请MAC地址的设备，按一定策略给自己分配一个MAC，然后向网络进行申明通告，如果没有收到冲突的消息，则该设备会将该申明MAC地址作为自身的MAC地址。为了提高申明效率，在网络中靠近边缘的网络设备会设置代理，用于判断是否有MAC地址冲突。如果没有地址冲突，则需要将申明通告消息在网络中转发。
如缘代理设备没有检测冲突，仍需要发往全网进行检测，从而增加了全网的广播报文。作对于大网络来说，尤其对于物联网等接入大量终端的场景下，用于申明MAC地址的广播报文将会呈爆炸式增长，严重影响网络的转发效率。另外此种方式会使得地址申请的过程也变得更加漫长，而且对于终端的安全性也带来了不可控的风险。
发明内容
根据本公开的一个方面，提供一种MAC地址信息同步方法，包括：在新增用户侧MAC地址时，在第一MAC地址冲突检测设备存储所 述用户侧MAC地址信息；以及所述第一MAC地址冲突检测设备向第二MAC地址冲突检测设备发送MAC地址同步消息，以更新在所述第二MAC地址冲突检测设备中存储的网络侧MAC地址信息。
根据本公开的另一方面，提供一种MAC地址信息同步设备，包括存储器和处理器，所述存储器存储有计算机程序，所述计算机程序被所述处理器执行时，所述处理器执行根据本公开的MAC地址同步方法。
根据本公开的另一方面，提供一种计算机可读存储介质，其上存储有计算机程序，所述计算机程序被至少一个处理器执行时，所述至少一个处理器执行根据本公开的MAC地址同步方法。
附图说明
图1是根据本公开实施例的MAC地址信息同步方法的流程图；
图2是可以应用根据本公开实施例的MAC地址信息同步方法的网络示意图；
图3A和图3B是根据本公开实施例的MAC地址同步消息中的MAC地址数据的格式示意图；
图4是可以应用根据本公开实施例的MAC地址信息同步方法的另一网络示意图；
图5是可以应用根据本公开实施例的MAC地址信息同步方法的另一网络示意图；以及
图6是根据本公开实施例的MAC地址信息同步装置的结构示意图。
具体实施方式
通过以下结合附图描述的实施例，对本公开进行进一步详细说明。应当理解，此处所描述的具体实施例仅用以解释本公开，并不限定本公开。
图1是根据本公开实施例的MAC地址信息同步方法的流程图。
如图1所示，根据本公开实施例的MAC地址信息同步方法可以 包括步骤S101和S102。
在步骤S101，在新增用户侧MAC地址时，在第一MAC地址冲突检测设备存储所述用户侧MAC地址信息。
在步骤S102，第一MAC地址冲突检测设备向第二MAC地址冲突检测设备发送MAC地址同步消息(以下简称为“地址同步消息”)，以更新在所述第二MAC地址冲突检测设备中存储的网络侧MAC地址信息。
根据本公开实施例，所述方法还可以包括：在接收到所述第二MAC地址冲突检测设备的MAC地址同步消息时，所述第一MAC地址冲突检测设备根据接收的MAC地址同步消息更新所述第一MAC地址冲突检测设备存储的网络侧MAC地址信息。
根据本公开实施例，一方面，在新增用户侧MAC地址时，在本地MAC地址冲突检测设备(即，第一MAC地址冲突检测设备)存储所述用户侧MAC地址信息，并向远程MAC地址冲突检测设备(即，第二MAC地址冲突检测设备)发送MAC地址同步消息，以更新在远程MAC地址冲突检测设备中存储的网络侧MAC地址信息；另一方面，在接收到远程MAC地址冲突检测设备的MAC地址同步消息时，根据接收的MAC地址同步消息更新本地MAC地址冲突检测设备存储的网络侧MAC地址信息，以进行MAC地址信息的同步，从而在实现MAC地址的快速冲突检测以及MAC地址的快速分配的同时，大幅减少了网络中广播报文的流量，提高设备最终获取MAC的效率，提高了整体方案的可用性和效率。
应当认识到，本公开使用诸如“第一”、“第二”等仅用于在不同的设备之间进行区分，而不对设备进行限定。
根据本公开实施例，所述第一和第二MAC地址冲突检测设备可以为MAC地址冲突检测代理和/或MAC地址冲突检测服务器。
为了使本公开的描述更加清楚，以MAC地址冲突检测代理(以下简称为“代理”或者“代理设备”)为例，简要说明相关技术中的自申明的方案。
当设备要自申明MAC地址时，设备会首先发送MAC地址的注册 消息，注册消息包括一个用于唯一标识该消息的消息ID，以及需要注册的MAC地址块。
另外，设备在收到注册消息后，保存消息ID和入端口的对应关系，对申明的MAC地址进行检查，以判断是否和本设备的MAC地址冲突，如果有冲突，则发送冲突失败消息；如果没有冲突，则转发该注册消息或终结该注册消息。
如果网络设备设置有代理，则需检查已经申明注册在本设备上的MAC地址。如果本设备中没保存有申明的MAC地址，则将该注册消息注册在本设备中，和接收端口保持映射关系，并继续向其他端口转发该注册消息；如果本设备中找到有申明的MAC地址，则该设备需要返回一个冲突失败消息，并不再向和冲突的MAC地址映射的端口转发该注册消息。如果本设备没有设置代理，则直接向其他端口转发该注册消息。
冲突失败消息包括一个和收到的注册消息一致的消息ID，以及有冲突的MAC地址块。
当设备收到冲突失败消息，则根据消息ID和有冲突的MAC地址块内容重新选择MAC地址块，并更改消息重新发送注册消息；如果没有冲突，则会发送MAC地址的申明消息。申明消息包括一个唯一的消息ID，以及需要申明的MAC地址块。
设备收到申明消息，将根据情况申明消息中的MAC地址存储在本设备中，并根据接收到的MAC地址申明消息和入端口更新本设备的转发表。
因此在相关技术中，如果代理设备没有检测冲突，也仍需要发往全网进行检测，这样增加了全网的广播报文。
根据本公开实施例，为了提高设备获取MAC地址的效率，对设备MAC地址进行冲突检测的代理进行数据的同步，在各代理之间能共享信息，使得靠近边缘的代理对冲突尽快检测并及时作出答复，从而提高设备最终获取MAC的效率，并且可以提高网络的安全性。
根据本公开实施例，所述第一MAC地址冲突检测设备可以将所述用户侧MAC地址信息和所述网络侧MAC地址信息存储在预置数据库 中；并且在接收到注册的MAC地址时，所述第一MAC地址冲突检测设备可以在所述数据库中对所述注册的MAC地址进行冲突检测。
根据本公开实施例，当所述第一MAC地址检测设备接收到用户侧MAC地址申明消息时，若所述申明消息中的用户侧MAC地址与所述第一MAC地址检测设备存储的用户侧MAC地址信息和网络侧MAC地址信息不冲突，则确认新增用户侧MAC地址；若冲突，则发送MAC地址冲突消息。
在相关技术的申明方案中，在网络设置有MAC地址冲突检测代理，即，对收到的MAC地址注册消息中注册的MAC地址进行判断是否存在冲突，如果存在冲突则发送MAC地址冲突消息；如果不存在，则将该注册报文继续在网络中转发。此外，在收到申明消息后将申明消息中的MAC地址保存下来。这种情况会导致网络的广播报文过多，占用大量的网络资源。根据本公开实施例，在各代理之间同步通过申明消息获取到的已经被使用的MAC地址信息，从而保证更加靠近用户侧的代理能更快响应MAC地址注册消息。
根据本公开实施例，各代理之间的数据同步和信息共享可以包括：1.各代理之间的直接同步；2.所有代理通过服务器实现各代理之间的同步；3.各服务器之间的同步。
MAC地址同步的系统架构可以包括数据库(即，MAC地址信息本地数据库)和同步模块。MAC地址信息本地数据库用于存放通过申明消息验证通过的MAC地址以及从其他远程数据库同步的MAC地址。同步模块可以运行本地MAC地址分配协议(LAAP)，根据本地数据库MAC地址信息的变化发送同步消息，并根据收到的同步消息中MAC地址更新本地数据库，以保证数据库的一致。
图2是可以应用根据本公开实施例的MAC地址信息同步方法的网络示意图。
如图2所示，每个代理设备收到MAC地址的申明消息，并将该MAC地址保存在本代理设备的MAC地址数据库中。MAC地址的同步流程可以包括如下步骤11至步骤13。
在步骤11，网络设备S1、S2、S4通过MAC地址注册消息和MAC 地址申明消息获取到了自身的MAC地址，并且这些MAC地址都保存在了与这些网络设备连接的代理设备B1(即，第一MAC地址冲突检测设备)的本地MAC地址数据库中。在图中示出为属性U。
当代理设备B1的本地MAC地址数据库中新增有这些用户侧MAC地址时，代理设备B1向全网络发送MAC地址同步消息，同步消息可以携带有代理设备B1上新增的用户侧MAC地址。根据本公开实施例，同步消息的格式可以有两种，图3A和图3B分别示出了根据本公开实施例的MAC地址同步消息中的MAC地址数据的格式示意图。图3A所示的是同步一组连续的MAC地址空间，图3B所示的是离散的MAC地址块，里面指明已经被占用的MAC地址，以及该地址被占用的时间点。
以同样的方式，代理设备B2(即，第二MAC地址冲突检测设备)通过网络设备S3的注册消息和申明消息将网络设备S3的MAC地址保存在本地MAC地址数据中。对于新增的网络设备S3的地址，代理设备B2向全网发送MAC地址同步消息。
在步骤12，代理设备B1收到代理设备B2的MAC地址同步消息，并将同步消息中通告的MAC地址保存在数据库中，以作为网络侧MAC地址。在图中示出为属性N。同样地，代理设备B2收到了代理设备B1的MAC地址同步消息，根据同步消息中的MAC地址保存在本地数据中，作为网络侧MAC地址。
在步骤13，代理设备B1和B2此后再收到MAC地址注册消息时，首先会检查本地MAC地址数据库，查看是否有相同的MAC地址，如果有冲突的MAC地址，则发送MAC地址冲突消息给源设备；否则代理设备终结该MAC地址注册消息。
根据本公开实施例，所述第一MAC地址冲突检测设备向第二MAC地址冲突检测设备发送MAC地址同步消息的步骤(即，步骤S102)可以包括：在未学习到网络的MAC地址冲突检测设备拓扑前，所述第一MAC地址冲突检测设备向网络广播所述MAC地址同步消息；以及在学习到网络的MAC地址冲突检测设备拓扑后，所述第一MAC地址冲突检测设备向所述第二MAC地址冲突检测设备单播MAC地址同步消息。
根据本公开实施例，所述第一MAC地址冲突检测设备可以周期 性接收所述第二MAC地址冲突检测设备广播的MAC地址同步消息。
根据本公开实施例，代理设备的MAC地址同步消息可以定时地周期发送，以用于发现不同的代理设备邻居。网络拓扑如图2所示，代理设备B1和B2在发现他们互为邻居之前，会全网广播发送同步消息，以确保自己能被发现，此时的MAC地址同步消息目的地址为广播地址，源地址是本设备的地址。代理设备B1收到代理设备B2的地址同步消息后，学习到B2这个代理设备邻居。例如，在发送同步消息的达到三个预设周期时间，如果再没有收到新代理设备的MAC地址同步消息，则说明拓扑已稳定。代理设备B1学习到网络的代理设备的拓扑，并且将B2设为自己的邻居。在后续发送的MAC地址同步消息中，代理设备B1将代理设备B2的地址作为目的地址，实现单播发送，从而有效降低了网络中MAC地址广播报文数量，使得网络转发效率大大提高。
图4是可以应用根据本公开实施例的MAC地址信息同步方法的另一网络示意图。
如图4所示，当所述第一MAC地址冲突检测设备(代理设备B1)和所述第二MAC地址冲突检测设备(代理设备B2)通过MAC地址服务器(服务器S)连接时，所述MAC地址同步方法还可以包括：所述第一MAC地址冲突检测设备向所述MAC地址服务器发送MAC地址同步消息，以使所述MAC地址服务器将所述MAC地址同步消息发送所述第二MAC地址冲突检测设备；以及所述第一MAC地址冲突检测设备从所述MAC地址服务器获取所述第二MAC地址冲突检测设备的MAC地址同步消息。
根据本公开实施例，不仅在各代理设备之间进行MAC地址同步，而且还在代理设备和MAC地址服务器之间进行MAC地址同步。图4所示服务器S是专用于MAC地址分配和MAC地址冲突检测的服务器。在图4所示网络结构中，MAC地址同步的流程可以包括步骤S21至步骤S23。
在步骤21，代理设备B1通过网络设备S1、S2和S4的MAC地址申明消息获取到了用户侧的MAC地址。
在步骤22，代理设备B1新增了用户侧MAC地址，并主动向与其连接的MAC地址服务器S发送MAC地址的同步消息。
在步骤23，服务器S收到代理设备B1发送的MAC地址的同步消息，获取到新增MAC地址，并将这些新增的MAC地址放入到同步消息中，发送给其他的代理设备，例如，代理设备B2。
根据本公开实施例，所述第一MAC地址冲突检测设备接收的MAC地址同步消息可以携带有所述第二MAC地址冲突检测设备根据申明的MAC地址数据接收到的MAC地址信息。
所述第一MAC地址冲突检测设备在接收到所述第二MAC地址冲突检测设备的MAC地址同步消息时，将接收的MAC地址同步消息中携带的MAC地址数据保存为所述第一MAC地址冲突检测设备的网络侧MAC地址信息。
根据本公开实施例，在检测到所述第一MAC地址冲突检测设备的用户侧MAC地址信息存在与所述第一MAC地址冲突检测设备接收的MAC地址同步消息冲突的MAC地址数据时，判断所述MAC地址同步消息携带的第一接收时间和所述冲突的MAC地址申明消息的第二接收时间的先后顺序；并且根据判定结果将所述第一MAC地址冲突检测设备接收的MAC地址信息中的MAC地址数据保存到所述第一MAC地址冲突检测设备的网络侧MAC地址信息中。
根据本公开实施例，若所述第二接收时间早于或等于所述第一接收时间，则不在所述第一MAC地址冲突检测设备的网络侧MAC地址信息中保存所述冲突的MAC地址数据；若所述第一接收时间早于所述第二接收时间，则将所述冲突的MAC地址数据从所述第一MAC地址冲突检测设备的用户侧网络MAC地址信息中转存储到所述第一MAC地址冲突检测设备的网络侧MAC地址信息中，并修改所述冲突的MAC地址数据的接收时间为所述第一接收时间。
图5是可以应用根据本公开实施例的MAC地址信息同步方法的另一网络示意图。
如图5所示，代理设备B2和代理设备B1和B4连接在同一个局域网中。网络设备S4发送的MAC地址申明消息可以是广播报文，从 而会被代理设备B1和B2接收到。在此情况下，网络设备S4的MAC地址都会作为用户侧MAC地址分别存储在代理设备B1和B2的本地数据库中。由于代理设备B1和B2接收到这个MAC地址的时间不同，所以存在各自本地数据库存储的时间是不一样的。此时代理设备B1和B2并不知道存在这样的冲突，并分别将网络设备S4的MAC地址通过MAC地址同步消息相互通告。当代理设备B1和B2分别保存网络侧MAC地址到本地数据库时，如果发现冲突，则会查看对应的时间戳，并选择时间戳较早的时间保存在本地数据库中。
这里以代理设备B2的操作为例进行说明。代理设备B2收到代理设备B1发来了包含有网络设备S4的MAC地址同步消息。在检测冲突时，代理设备B2发现存储在本地数据库的用户侧MAC地址信息中已经包括了网络设备S4的MAC地址。在发生冲突后，代理设备B2对本地数据库中存储的网络设备S4的MAC地址的时间戳T5和代理设备B1发送的同步消息中的网络设备S4的MAC地址的时间戳T3进行比较。如果T5早于T3，则不对本地数据库进行修订；如果T5晚于T3，则将网络设备S4的MAC地址修改为同步消息中包括的网络设备S4的相关信息，例如，把本地数据库中网络设备S4的MAC地址的时间戳改为T3，并且将网络设备S4的MAC地址存储为网络侧MAC地址。
根据本公开实施例，可以将代理设备分为全局代理设备和局部代理设备，并且只对全局代理设备进行MAC地址的同步。
在全局代理设备之间相互进行邻居发现，当收到MAC地址的申明消息后，可以将申明消息中的MAC地址保存在本地数据库中，将该新增的MAC地址通过同步消息通告给其他的全局代理设备邻居，并终结该MAC地址申明消息，不再做进一步扩散。对于局部代理设备而言，不会进行同步，但局部代理设备可以继续转发所收到的MAC地址申明消息到全网。
为了能减少广播报文，可以通过周期同步消息进行邻居发现，当发现了邻居拓扑后，将广播的同步消息变为单播的同步消息发送，分别发送给不同的代理设备邻居。
发送同步消息时，同步消息中可以携带新增的MAC地址。如果 没有新增MAC地址，则同步消息中MAC地址为空。
代理设备或服务器接收到同步消息后，将同步消息中携带的MAC地址保存在本地数据库中。从而当代理设备或服务器收到网络设备发来的MAC地址申明消息时，可以从本地数据库中检测冲突。
图6是根据本公开实施例的MAC地址信息同步装置的结构示意图。
如图6所示，根据本公开实施例MAC地址信息同步设备可以包括存储器60和处理器62。存储器60存储有计算机程序，所述计算机程序被处理器62执行时，处理器62可以执行根据本公开上述各实施例的MAC地址同步方法。
根据本公开实施例，还提供一种计算机可读存储介质，其上存储有计算机程序，所述计算机程序被至少一个处理器执行时，所述至少一个处理器执行根据本公开上述各实施例的MAC地址同步方法。
根据本公开实施例，计算机可读存储介质可以是RAM存储器、闪存、ROM存储器、EPROM存储器、EEPROM存储器、寄存器、硬盘、移动硬盘、CD-ROM或者本领域已知的任何其他形式的存储介质。可以将一种存储介质藕接至处理器，从而使处理器能够从该存储介质读取信息，且可向该存储介质写入信息；或者该存储介质可以是处理器的组成部分。处理器和存储介质可以位于专用集成电路中。
虽然本申请描述了本公开的特定示例，但本领域技术人员可以在不脱离本公开概念的基础上设计出来本公开的变型。本领域技术人员在本公开技术构思的启发下，在不脱离本公开内容的基础上，还可以对本公开做出各种改进，这仍落在本公开的保护范围之内。

Claims (16)

  1. 一种MAC地址信息同步方法，包括：
    在新增用户侧MAC地址时，在第一MAC地址冲突检测设备存储所述用户侧MAC地址信息；以及
    所述第一MAC地址冲突检测设备向第二MAC地址冲突检测设备发送MAC地址同步消息，以更新在所述第二MAC地址冲突检测设备中存储的网络侧MAC地址信息。
  2. 如权利要求1所述的方法，还包括：
    在接收到所述第二MAC地址冲突检测设备的MAC地址同步消息时，所述第一MAC地址冲突检测设备根据接收的MAC地址同步消息更新所述第一MAC地址冲突检测设备存储的网络侧MAC地址信息。
  3. 如权利要求1所述的方法，其中，所述第一MAC地址冲突检测设备向第二MAC地址冲突检测设备发送MAC地址同步消息的步骤包括：
    在未学习到网络的MAC地址冲突检测设备拓扑前，所述第一MAC地址冲突检测设备向网络广播所述MAC地址同步消息；以及
    在学习到网络的MAC地址冲突检测设备拓扑后，所述第一MAC地址冲突检测设备向所述第二MAC地址冲突检测设备单播所述MAC地址同步消息。
  4. 如权利要求1所述的方法，还包括：
    所述第一MAC地址冲突检测设备周期性接收所述第二MAC地址冲突检测设备广播的MAC地址同步消息。
  5. 如权利要求1所述的方法，其中，所述第一MAC地址冲突检测设备和所述第二MAC地址冲突检测设备为MAC地址冲突检测代理和/或MAC地址冲突检测服务器。
  6. 如权利要求1所述的方法，其中，所述第一MAC地址冲突检测设备和所述第二MAC地址冲突检测设备通过MAC地址服务器连接，并且所述方法还包括：
    所述第一MAC地址冲突检测设备向所述MAC地址服务器发送所述MAC地址同步消息，以使所述MAC地址服务器将所述MAC地址同步消息发送所述第二MAC地址冲突检测设备；以及
    所述第一MAC地址冲突检测设备从所述MAC地址服务器获取所述第二MAC地址冲突检测设备的MAC地址同步消息。
  7. 如权利要求2所述的方法，还包括：
    所述第一MAC地址冲突检测设备将所述用户侧MAC地址信息和所述网络侧MAC地址信息存储在预置数据库中；以及
    在接收到MAC地址注册消息时，所述第一MAC地址冲突检测设备在所述数据库中对所述注册的MAC地址进行冲突检测。
  8. 如权利要求2所述的方法，还包括：
    当所述第一MAC地址检测设备接收到MAC地址申明消息时，判断所述申明消息中的MAC地址与所述第一MAC地址检测设备存储的用户侧MAC地址信息和网络侧MAC地址信息是否冲突；
    若不冲突，则确认新增用户侧MAC地址；
    若冲突，则发送MAC地址冲突消息。
  9. 如权利要求2所述的方法，其中，所述第一MAC地址冲突检测设备接收的MAC地址同步消息携带有所述第二MAC地址冲突检测设备接收到的MAC地址信息。
  10. 如权利要求9所述的方法，其中，所述第一MAC地址冲突检测设备根据接收的MAC地址同步消息更新所述第一MAC地址冲突检测设备存储的网络侧MAC地址信息的步骤包括：
    在接收到所述第二MAC地址冲突检测设备的MAC地址同步消息时，所述第一MAC地址冲突检测设备将接收的MAC地址同步消息中携带的MAC地址数据保存为所述第一MAC地址冲突检测设备的网络侧MAC地址信息。
  11. 如权利要求9所述的方法，其中，所述MAC地址数据的格式为连续的MAC地址空间或者为离散的MAC地址块。
  12. 如权利要求2所述的方法，其中，所述第一MAC地址冲突检测设备接收的MAC地址同步消息携带有所述第二MAC地址冲突检测设备接收到的MAC地址申明消息的第一接收时间。
  13. 如权利要求12所述的方法，还包括：
    在检测到所述第一MAC地址冲突检测设备的用户侧MAC地址信息存在与所述第一MAC地址冲突检测设备接收的MAC地址同步消息冲突的MAC地址数据时，判断所述MAC地址同步消息携带的第一接收时间和所述冲突的MAC地址申明消息的第二接收时间的先后顺序；以及根据判定结果将所述第一MAC地址冲突检测设备接收的MAC地址信息中的MAC地址数据保存到所述第一MAC地址冲突检测设备的网络侧MAC地址信息中。
  14. 如权利要求13所述的方法，其中，根据判定结果将所述第一MAC地址冲突检测设备接收的MAC地址信息中的MAC地址数据保存到所述第一MAC地址冲突检测设备的网络侧MAC地址信息中的步骤包括：
    若所述第二接收时间早于或等于所述第一接收时间，则不在所述第一MAC地址冲突检测设备的网络侧MAC地址信息中保存所述冲突的MAC地址数据；
    若所述第一接收时间早于所述第二接收时间，则将所述冲突的MAC地址数据从所述第一MAC地址冲突检测设备的用户侧网络MAC地 址信息中转存储到所述第一MAC地址冲突检测设备的网络侧MAC地址信息中，并修改所述冲突的MAC地址数据的接收时间为所述第一接收时间。
  15. 一种MAC地址信息同步设备，包括存储器和处理器，所述存储器存储有计算机程序，所述计算机程序被所述处理器执行时，所述处理器执行根据权利要求1至14中任一项所述的MAC地址同步方法。
  16. 一种计算机可读存储介质，其上存储有计算机程序，所述计算机程序被至少一个处理器执行时，所述至少一个处理器执行根据权利要求1至14中任一项所述的MAC地址同步方法。
PCT/CN2018/095183 2017-07-10 2018-07-10 Mac地址信息同步方法、设备及存储介质 WO2019011247A1 (zh)

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