RU2675050C1 - Method and device for selecting access control address to mac environment - Google Patents

Abstract

FIELD: information technology.SUBSTANCE: invention relates to a method, system, and machine-readable medium for selecting a MAC access control address. Method includes performing the calculation of aggregation values for MC-LAG when satisfying a trigger condition, which is the end of MC-LAG initialization or adding/removing of MC-LAG element, obtaining the system MAC address of each block in MC-LAG and determining the MAC address of the MC-LAG interface from the system MAC addresses of multiple MC-LAG units according to a predefined rule after completing the calculation of the aggregation values and successful aggregation, including obtaining a system MAC address of each MC-LAG from a MC-LAG protocol message, using the system MAC address with the minimum numerical value in the system MAC addresses of a set of blocks as a MAC address of the MC-LAG interface or using a system MAC address with the maximum numeric value in the system MAC addresses of multiple blocks as a MAC address of the MC-LAG interface.EFFECT: technical effect includes ensuring the selection of a MAC access control address.7 cl, 7 dwg

Description

FIELD OF THE INVENTION

[0001] The present invention relates, but is not limited to network communication technologies, and in particular, provides a method and apparatus for selecting a MAC medium access control address of a multi-block MC-LAG channel aggregation group.

BACKGROUND OF THE INVENTION

[0002] With the rapid development of the Internet, IP networks have gradually become an indispensable tool for the daily work and life of people.

[0003] In IP communication networks, in order to avoid the failure of a separate data node on the uplink of the network, it is possible to use MC-LAG (multi-block group of channel aggregation) to back up the data link and the node. As shown in FIG. 1, an MC-LAG is used between node 2 and node 3 to connect the two lines connecting the two nodes with node 1 into one MC-LAG, so that the MC-LAG can automatically switch the entire uplink data service flow from node 1 to node 3 when an individual node fails, such as a failure of node 2.

[0004] For an Ethernet switch and other network communication devices, a system MAC address has already been assigned and set prior to delivery, and it must be exclusive at the global level and cannot be the same as the MAC address of other network nodes. Otherwise, a conflict of MAC addresses may occur.

[0005] Currently, a conventional Ethernet switch device in the industry is directly assigned a system MAC address of a node in the form of a MAC address of an MC-LAG interface. As shown in FIG. 2, the MAC address of the MC-LAG interface of node 2 is the system MAC address of the node 2, and the MAC address of the MC-LAG interface of node 3 is the system MAC address of the node 3, thereby leading to the MAC addresses of the MC- interfaces LAGs of different blocks of one MC-LAG are different.

[0006] When the MC-LAG is used in a three-level scenario for moving data through network segments, different MAC addresses in the form of destination MAC addresses in the Ethernet header of the transmitted data packet will be assigned to different aggregation lines in the same MC-LAG. As shown in the example of FIG. 3, the IP address 10.80.1.254 is configured on the MC-LAG interfaces of node 2 and node 3 as the IP addresses of the user gateway of node 1. Thus, when the service flow is transmitted from the left communication line, the destination MAC address field in Ethernet the header of the service flow data packet will be populated with the system MAC address of node 2; and, when the service flow is transmitted from the right link, the destination MAC address field in the Ethernet header of the service flow data packet will be populated with the system MAC address of node 3. This will lead to problems of repeated changes in the ARP - (address resolution protocol) gateway element and loss of service flow packets on the user node.

[0007] In order to solve the aforementioned problems, a general decision was made at the present time to apply VRRP (Virtual Router Redundancy Protocol) on the MC-LAG interfaces of node 2 and node 3 to allow the assignment of the same MC-LAG VRRP of the virtual MAC address as the MAC address of the interface. However, the solution currently has the following disadvantages:

[0008] 1. For the solution, an additional launch of the VRRP protocol is required, while VRRP leads to additional consumption of resources, such as the CPU of the system, etc. Moreover, each network segment is needed to independently launch the VRRP group, so the corresponding number of VRRP needs to be started when one MC-LAG interface simultaneously carries the service flow of several network segments.

[0009] 2. Each VRRP group must occupy one real IP address and one virtual IP address, thereby consuming the IP address resource.

[0010] 3. An additional VRRP link must be established between node 2 and node 3, thereby further increasing the cost of network creation and the complexity of the service.

SUMMARY OF THE INVENTION

[0011] The following is an summary of the invention described in detail herein, but the intention is not to limit the scope of protection of this document.

[0012] The above problem is solved by a method for selecting a MAC access control address, a MAC access control address selection apparatus, and a computer-readable storage medium described herein. Also provided is a method for selecting a MAC access control address applied to a multi-block MC-LAG channel aggregation group, including:

[0013] performing calculation of aggregation values for the MC-LAG while meeting the trigger condition;

[0014] obtaining the system MAC address of each block in the MC-LAG and determining the MAC address of the MC-LAG interface from the system MAC addresses of the plurality of MC-LAGs according to a predefined rule after completing the calculation of the aggregation values and successful aggregation.

[0015] optionally,

[0016] the trigger condition is the end of the initialization of the MC-LAG or the addition / removal of an MC-LAG element.

[0017] optionally,

[0018] obtaining the system MAC address of each block in the MC-LAG and determining the MAC address of the MC-LAG interface from the system MAC addresses of the plurality of MC-LAGs according to a predefined rule, and determining the MAC address of the MC-LAG interface according to the predefined rules after successful aggregation include:

[0019] obtaining the system MAC address of each MC-LAG from the MC-LAG protocol message after successful aggregation; and

[0020] using the system MAC address with a minimum numerical value in the system MAC addresses of a plurality of blocks as the MAC address of the MC-LAG interface.

[0021] optionally,

[0022] after determining the MAC address of the MC-LAG interface according to the preliminary selection rule, the method further includes:

[0023] sending an ARP message to each network segment, wherein the ARP message contains a MAC address of the MC-LAG interface determined according to a preliminary selection rule.

[0024] optionally,

[0025] after performing the calculation of aggregation values for the MC-LAG, the method further includes:

[0026] waiting for the calculation of new MC-LAG aggregation values when the calculation of aggregation values is unsuccessful.

[0027] Embodiments of the present invention further provide a MAC medium access control address selection apparatus applicable to an MC-LAG multi-block channel aggregation group, comprising: a calculation module and a selection module, wherein

[0028] the calculation module is configured to calculate aggregation values for the MC-LAG while meeting the trigger condition; and

[0029] the selection module is configured to obtain the system MAC address of each block in the MC-LAG and determine the MAC address of the MC-LAG interface from the system MAC addresses of the multiple MC-LAGs according to the preliminary selection rule after completion of the calculation of aggregation values and successful execution aggregation.

[0030] optionally,

[0031] the trigger condition is the end of the initialization of the MC-LAG or the addition / removal of an MC-LAG element.

[0032] optionally,

[0033] the selection module is configured to obtain the system MAC address of each block in the MC-LAG and determine the MAC address of the MC-LAG interface from the system MAC addresses of the multiple MC-LAGs according to the preliminary selection rule after completing the calculation of aggregation values and successful execution aggregation, this means:

[0034] obtaining the system MAC address of each MC-LAG from the MC-LAG protocol message after successful aggregation; and

[0035] using the system MAC address with a minimum numerical value in the system MAC addresses of a plurality of blocks as the MAC address of the MC-LAG interface.

[0036] Optionally, the device further comprises:

[0037] a communication module configured to send an ARP message to each network segment after the module determines the MAC address of the MC-LAG interface according to the preliminary selection rule, while the ARP message contains the MAC address of the MC-LAG interface determined according to the preliminary rule of choice.

[0038] Optionally, the device further comprises:

[0039] a processing module configured to wait for calculation of new MC-LAG aggregation values when the calculation of aggregation values is unsuccessful.

[0040] The above solution solves the problem that the MAC addresses of the MC-LAG interface of the various blocks in the same MC-LAG are different based on the existing MC-LAG protocol, and selects the MAC address of the MC-LAG interface using the existing MC-LAG protocol message so that the MC-LAG interfaces of different blocks of the same MC-LAG can select one MAC address. Compared to the existing VRRP solution, the launch of an additional protocol is not required, and additional new communication lines are not needed.

[0041] After reading and understanding the graphic materials and the detailed description, other aspects may be understood.

BRIEF DESCRIPTION OF GRAPHIC MATERIALS

[0042] FIG. 1 is a schematic diagram of an MC-LAG communication line switching diagram;

[0043] in FIG. 2 is a schematic diagram of the MAC address information of an MC-LAG interface in the prior art;

[0044] in FIG. 3 is a schematic diagram of the MAC address information of an MC-LAG interface of a three-level scenario for moving data through MC-LAG network segments in the prior art;

[0045] in FIG. 4 is a schematic diagram of the MAC address information of an MC-LAG interface of a three-level scenario for moving data through MC-LAG network segments in embodiments of the present invention;

[0046] in FIG. 5 is a flowchart of a method for selecting a MAC address in Embodiment I of the present invention;

[0047] in FIG. 6 is a flowchart of a method for selecting a MAC address in Embodiment II of the present invention; and

[0048] in FIG. 7 is a flowchart of a method for selecting a MAC address in Embodiment III of the present invention.

DETAILED DESCRIPTION

[0049] In order to make the objective, technical solution and advantages of the embodiments of the present invention more clear, embodiments of the present invention are described in detail below in conjunction with graphic materials. It should be noted that in the case of consistency, the embodiments in the present application and the features in the embodiments may be randomly combined.

[0050] Currently, the existing MC-LAG protocol can periodically transmit an MC-LAG protocol message between various units that are already included in the MC-LAG to update and maintain link aggregation state; the MC-LAG protocol message is a standard Ethernet data packet structure; and the source MAC address in the Ethernet header is filled with the system MAC address of the sending node. The MC-LAG protocol message is periodically transmitted between the various MC-LAGs, and the source MAC address in the Ethernet header is filled with the system MAC address of the node sending the message; and after the completion of the MC-LAG calculation and the successful aggregation, a line for selecting the MAC address of the MC-LAG interface is added.

[0051] Embodiment I

[0052] The MAC media access control address selection method is applied to the MC-LAG multi-block channel aggregation group. The operation of the method is as shown in FIG. 5. The method includes:

[0053] step 101: performing calculation of aggregation values for the MC-LAG while satisfying the trigger condition; and

[0054] step 102: obtaining the system MAC address of each block in the MC-LAG and determining the MAC address of the MC-LAG interface from the system MAC addresses of the plurality of MC-LAGs according to a predefined rule after completing the calculation of aggregation values and successful aggregation.

[0055] The above solution solves the problem that the MAC addresses of the MC-LAG interface of the various units in the same MC-LAG are different based on the existing MC-LAG protocol, and selects the MAC address of the MC-LAG interface using the existing MC-LAG protocol message so that the MC-LAG interfaces of different blocks of the same MC-LAG can select one MAC address. Compared to the existing VRRP solution, no additional protocol is required to run, and there is no need for a new line.

[0056] In the above technical solution, the completion of the initialization of the MC-LAG or the addition / removal of the MC-LAG element can be used as a trigger condition to perform the calculation of aggregation values.

[0057] Upon successful completion of the calculation of aggregation values and successful aggregation, the system MAC address of each block in the MC-LAG is obtained from the MC-LAG protocol message; the system MAC address with the minimum numerical value in the system MAC addresses of many blocks is used as the MAC address of the MC-LAG interface; or the system MAC address with the maximum numerical value in the system MAC addresses of multiple blocks is used as the MAC address of the MC-LAG interface.

[0058] A new calculation of MC-LAG aggregation values is expected if the calculation of aggregation values is unsuccessful.

[0059] Optionally, the method may further include:

[0060] step 103: sending an ARP message to each network segment, wherein the ARP message contains a MAC address of an MC-LAG interface determined according to a preliminary selection rule.

[0061] It should be pointed out that with respect to the rule for selecting the MAC address of the MC-LAG interface, the system MAC address of the block with the minimum numerical value can be selected as the MAC address of the MC-LAG interface; in other embodiments, the rule for selecting the MAC address of the various MC-LAGs can be determined according to the corresponding features of the MC-LAG protocol, since all MC-LAGs are enabled to select the same MAC address as the MAC address of the MC-LAG interface.

[0062] Embodiment II

[0063] As shown in FIG. 4 and FIG. 6, the technical solution of the present invention is further described in combination with an embodiment. A method for selecting a MAC access control address includes:

[0064] step 1-2: starting a new calculation of aggregation values by initializing the MC-LAG or adding a new item / deleting the item;

[0065] step 3: after completion of the calculation of the MC-LAG aggregation values, determining whether the aggregation was successful; step 4 is performed upon successful completion of aggregation; and step 7 is executed if the aggregation is unsuccessful;

[0066] step 4: each aggregation group block extracts the system MAC addresses of all the blocks of the MC-LAG element from the MC-LAG protocol message, the MAC address with a minimum numerical value is selected as the MAC address of the MC-LAG interface; or the MAC address with the maximum numerical value is selected as the MAC address of the MC-LAG interface;

[0067] if aggregation is unsuccessful, the MAC address selection process is not performed, and the selection process directly enters the completion state to wait for the next process of calculating the aggregation values;

[0068] step 5: after completion of the MAC address selection process, determining whether the system begins to perform a notification function of a change in the MAC address of the interface; when implementing the notification function, step 6 is performed; and if there is no implementation of the notification function, step 7 is performed;

[0069] step 6: the system sends an empty ARP message from the three-level interface where the MC-LAG is located, and if there are many network segments, an empty ARP message must be sent to each network segment.

[0070] The purpose of sending an ARP message is to immediately inform other nodes in the local network of a change in the MAC address of the three-level interface where the MC-LAG is located, so other nodes in the local network can immediately update the local ARP message cache table.

[0071] step 7: completing the address selection, and waiting for the condition to start the next starting address.

[0072] Embodiment III

[0073] As shown in FIG. 7, according to embodiments of the present invention, there is provided a MAC medium access control address selection device that is applied to a multi-block MC-LAG channel aggregation group. The device contains:

[0074] a calculation module 11, configured to calculate aggregation values for the MC-LAG while satisfying the trigger condition; and

[0075] a selection module 12, configured to determine a MAC address of the MC-LAG interface according to a preliminary selection rule upon successful calculation of aggregation values.

[0076] Optionally, the triggering condition is to terminate the initialization of the MC-LAG or add / remove an MC-LAG element.

[0077] optionally,

[0078] the selection module 12 is configured to determine the MAC address of the MC-LAG interface according to a preliminary selection rule for successfully calculating aggregation values, meaning:

[0079] obtaining the system MAC address of each MC-LAG from the MC-LAG protocol message when aggregation is successful; and

[0080] using a system MAC address with a minimum numerical value in the system MAC addresses of a plurality of blocks as the MAC address of the MC-LAG interface; or using the system MAC address with the maximum numerical value in the system MAC addresses of multiple blocks as the MAC address of the MC-LAG interface.

[0081] Optionally, the device further comprises:

[0082] a communication module 13 configured to send an ARP message to each network segment after the module 12 determines the MAC address of the MC-LAG interface according to a preliminary selection rule, wherein the ARP message contains a MAC address of the MC-LAG interface determined according to preliminary selection rule.

[0083] Optionally, the device further comprises:

[0084] a processing unit 14 configured to wait for the calculation of new MC-LAG aggregation values when the calculation of aggregation values is unsuccessful.

[0085] Embodiment IV

[0086] According to embodiments of the present invention, there is further provided a computer readable storage medium that stores a program instruction; and when the processor executes the program command, a method for selecting a MAC access control address, proposed according to the embodiments, is implemented.

[0087] The above description is more likely to relate only to optional embodiments of the present invention, and not to limit its scope. Specialists in the field of technology to which the invention relates should understand that a wide variety of modifications and variations of the present invention are possible. Those skilled in the art will understand that all or part of the steps in the above method can be performed by sending commands to the appropriate hardware programs; and programs can be stored on a computer readable storage medium such as read-only memory, a magnetic disk or an optical disk and the like. Optionally, all or part of the steps of the above embodiments may also be implemented using one or more integrated circuits. Accordingly, each module / modules in the above embodiments may be implemented using a certain type of hardware, and may also be implemented using a certain type of software modules. The present invention is not limited to a combination of hardware or software in any particular form.

INDUSTRIAL APPLICABILITY

[0088] The MAC address of the MC-LAG is selected using an existing MC-LAG protocol message, so the MC-LAG interfaces of different blocks of the same MC-LAG can select the same MAC address. Compared to the existing VRRP solution, no additional protocol is required to run, and there is no need for a new line.

Claims (24)

1. A method for selecting a MAC access control address applied to an MC-LAG multi-block channel aggregation group, including: performing aggregation value calculation for the MC-LAG while meeting the trigger condition using the calculation module; obtaining the system MAC address of each block in the MC-LAG using the selection module and determining the MAC address of the MC-LAG interface using the selection module from the system MAC addresses of the set of MC-LAG blocks according to a predefined rule after the calculation of aggregation values and successful execution aggregation; wherein the trigger condition is the end of the initialization of the MC-LAG or the addition / removal of an MC-LAG element; in this case, obtaining the system MAC address of each block in the MC-LAG using the selection module and determining the MAC address of the MC-LAG interface from the system MAC addresses of multiple MC-LAGs according to a predefined selection rule include: obtaining the system MAC address of each MC-LAG using the selector from the MC-LAG protocol message; the use by the module for selecting a system MAC address with a minimum numerical value in the system MAC addresses of a plurality of blocks as the MAC address of the MC-LAG interface; or using the system MAC address with the maximum numerical value in the system MAC addresses of multiple blocks as the MAC address of the MC-LAG interface. 2. The method according to p. 1, characterized in that after the module determines the selection of the MAC address of the MC-LAG interface according to the preliminary selection rule, it further includes: sending, using the communication module, an ARP address resolution protocol message to each network segment, while the ARP message contains the MAC address of the MC-LAG interface determined according to the preliminary selection rule. 3. The method according to any one of paragraphs. 1, 2, characterized in that after calculating aggregation values for the MC-LAG using the calculation module, it further includes: waiting for the processing module to calculate new MC-LAG aggregation values when the calculation of aggregation values is unsuccessful. 4. A MAC media access control address selection device applied to a multi-block MC-LAG channel aggregation group, comprising a calculation module and a selection module, wherein a calculation module is configured to calculate aggregation values for the MC-LAG while meeting the trigger condition; and the selection module is configured to obtain the system MAC address of each block in the MC-LAG and determine the MAC address of the MC-LAG interface from the system MAC addresses of multiple MC-LAGs according to the preliminary selection rule after completing the calculation of aggregation values and successful aggregation; wherein the trigger condition is the end of the initialization of the MC-LAG or the addition / removal of an MC-LAG element; wherein the selection module is configured to obtain the system MAC address of each block in the MC-LAG and determine the MAC address of the MC-LAG interface from the system MAC addresses of the multiple MC-LAGs according to the preliminary selection rule after completing the calculation of aggregation values and successful aggregation , this means: obtaining the system MAC address of each MC-LAG from the MC-LAG protocol message; and the use of a system MAC address with a minimum numerical value in the system MAC addresses of many blocks as the MAC address of the MC-LAG interface; or using the system MAC address with the maximum numerical value in the system MAC addresses of multiple blocks as the MAC address of the MC-LAG interface. 5. The device according to p. 4, characterized in that it further comprises a communication module configured to send an ARP address resolution protocol message to each network segment after the selection module determines the MAC address of the MC-LAG interface according to the preliminary selection rule, wherein the ARP message contains the MAC address of the MC-LAG interface determined according to the preliminary selection rule . 6. The device according to any one of paragraphs. 4, 5, characterized in that it further comprises: a processing unit configured to wait for the calculation of new MC-LAG aggregation values when the calculation of aggregation values is unsuccessful. 7. A computer-readable storage medium storing program instructions for implementing the method according to any one of claims. 1-3 when the processor executes a program command.

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