WO2023273864A1

WO2023273864A1 - Mac address synchronization method and apparatus for olt device

Info

Publication number: WO2023273864A1
Application number: PCT/CN2022/098566
Authority: WO
Inventors: 柯明明; 史云森; 冯晋田
Original assignee: 烽火通信科技股份有限公司
Priority date: 2021-06-29
Filing date: 2022-06-14
Publication date: 2023-01-05
Also published as: CN113242481A; CN113242481B

Abstract

The present invention relates to a MAC address synchronization method and apparatus for an OLT device. The method mainly comprises: a stacking system completes selecting master and standby control boards, and advertises information of the master control board to all stacking devices in the stacking system in a multicast manner; the stacking devices register and subscribe to MAC address entry events to the master control board; forwarding planes of the stacking devices report, to a control pane of the master control board, MAC address entry events to be processed in batches; the control plane of the master control board performs local MAC address entry processing on said MAC address entry events according to the time sequence, and sends said MAC address entry events in a multicast manner to all the stacking devices that subscribe to the corresponding events; upon receipt of said MAC address entry events, the stacking devices perform local MAC address entry processing. The present invention can ensure the synchronization timing of a MAC address table, solves the problem in the prior art of the abnormal time sequence, can ensure the normal operation of MAC aging, and can also flexibly extend an uplink port of the system to achieve the purpose of newly adding the stacking device.

Description

MAC address synchronization method and device for OLT equipment

【Technical field】

The invention relates to the field of communication technology, in particular to a method and device for synchronizing MAC addresses of OLT equipment, which are suitable for rack-type three-layer switches, routers or OLT equipment.

【Background technique】

The current broadband access technology is mainly divided into copper wire access technology (such as various DSL technologies) and optical access technology. Passive Optical Network (PON, Passive Optical Network) technology is a point-to-multipoint optical access technology. Technologies mainly include Ethernet Passive Optical Network (EPON, Ethernet Passive Optical Network) and Gigabit Passive Optical Network (GPON, Gigabit Passive Optical Network). Among them, the PON system usually consists of OLT (Optical Line Terminal, Optical Line Terminal), ODN (Optical Distribution Network, Optical Distribution Network) and ONU (Optical Network Unit, Optical Network Unit)/ONT (Optical network terminal, Optical Network Equipment) Composition, as shown in Figure 1.

In the composition of the above PON system, the OLT is the core equipment of the PON system, which is equivalent to a switch or router in a traditional communication network. fiber optic interface. Its main functions are:

Uplink the upper layer network to complete the uplink access of the PON system.

Through the ODN network (composed of optical fibers and passive optical splitters), the user-end equipment ONU is downlinked to realize functions such as control, management and distance measurement of the user-end equipment ONU.

As shown in Figure 2, OLT equipment usually consists of the following parts:

Control board (also called main control board or super control unit), generally an OLT has two main and backup control boards.

The DC power supply board (the power supply from the negative 48 volts of the switching power supply) is generally two main and standby boards.

Fan unit (mainly manages heat dissipation and environmental monitoring of equipment, etc.).

Uplink board, the uplink board is connected to BRAS (Broadband Remote Access Server, broadband remote access server) and other aggregation switches through transmission, or directly connected to BRAS and other equipment and SR (Service Router, full service router) equipment, if there is IPTV service, it needs to Access to the corresponding BNG (Broadband Network Gateway, broadband network gateway control equipment) equipment, both BRAS and SR belong to BNG.

Downlink board (also called service board or PON board), generally OLT equipment has a multi-port PON board (for example, a board has 16 PON ports), and each port goes down through an optical splitter (not exceeding 1:128) to connect to the ONU terminal.

In addition to the above-mentioned main components, the OLT equipment also includes a machine frame (or called a service frame), and according to business needs, the OLT can also be inserted into boards such as TDM business board, Ethernet business board, and multi-channel E1 business board. Can be mixed.

The control board provided by the current OLT equipment provides multiple uplink ports. In order to make full use of the uplink ports of the main and standby control boards, the forwarding plane of the main and standby control boards works in 1+1 mode, that is: the uplink ports of the main and standby control boards Both are in forwarding mode; for this forwarding scenario, the forwarding planes of the active and standby control boards need to synchronize the MAC addresses of Layer 2 forwarding services.

In the case that the hardware cannot be synchronized, the existing software implementation technology is that the forwarding plane of the active and standby control boards sends MAC address events to the local control plane, and the local control plane writes the local MAC address events into the forwarding plane in a dynamic manner, and Send the MAC address event to the peer control plane; after receiving the synchronized MAC address event, the peer control plane needs to write it into the forwarding plane in a static manner.

Based on the aforementioned scenarios, the solutions implemented in the prior art have the following problems:

When the active and standby control boards write and delete MAC address entries synchronously, there is a timing problem.

The MAC addresses on the forwarding planes of the active and standby control boards cannot be aged out.

It does not support the expansion of new stacking devices, that is, it does not support the dynamic expansion of the uplink port.

In view of this, how to overcome the defects in the prior art and solve the above-mentioned problems in the prior art is a difficult problem to be solved in the technical field.

【Content of invention】

Aiming at the above defects or improvement needs of the prior art, the present invention provides a MAC address synchronization method and device for OLT equipment, which adopts the single control plane characteristic of the stacking system, and performs MAC processing uniformly through the sequence of MAC events received by the main control board, Ensure the timing of MAC address table synchronization and solve the timing anomaly problem existing in the prior art; flexibly adopt multicast and unicast methods in the process of MAC address synchronization, reduce the required network bandwidth, avoid broadcast storms, and improve MAC The address table synchronization efficiency makes the user experience good; without destroying the MAC address table synchronization interaction process of the existing equipment, the uplink port of the system can be flexibly expanded to improve the system bandwidth and make the system have a longer life cycle. , reduce operator input costs.

The embodiment of the present invention adopts following technical scheme:

In a first aspect, the present invention provides a MAC address synchronization method of an OLT device, comprising:

The stacking system completes the master/standby election of the control boards, and notifies the master control board information to all stacking devices in the stacking system in multicast mode;

The stack device registers and subscribes to MAC address entry events with the main control board;

The forwarding plane of the stacking device reports pending MAC address entry events in batches to the control plane of the main control board;

The control plane of the main control board performs local MAC address entry processing on the MAC address entry events to be processed in sequence, and multicasts the MAC address entry events to all stack devices that have subscribed to the corresponding events;

After the stack device receives the MAC address entry event, it processes the local MAC address entry.

Further, the information of the MAC address entry event includes: event type, MAC address, VLAN ID, location information, and MAC address type, wherein the event type includes a new event and an aging event.

Further, when the MAC address entry event to be processed is a new event, the control plane of the main control board performs local MAC address entry processing on the MAC address entry event to be processed in sequence, and multicasts the MAC address entry event. Table item events to all stack devices that have subscribed to the corresponding events include:

The control plane of the main control board searches for the corresponding local MAC address entry according to the MAC address and the VLAN ID combination key value in the MAC address entry event to be processed;

If found, update the local MAC address entry, and multicast the MAC address entry event to subscribed stack devices; if not found, add the MAC address entry event to the local MAC address entry, And multicast the MAC address entry event to subscribed stack devices.

Further, when the MAC address entry event to be processed is an aging event, the control plane of the main control board performs local MAC address entry processing on the MAC address entry event to be processed in sequence, and multicasts the MAC address table entry Item event to all stack devices that have subscribed to the corresponding event, including:

If it is found, and the location information of the two is consistent, delete the corresponding local MAC address entry, and multicast the event of the MAC address entry to the subscribed stack device; if it is found, but the location information of the two is inconsistent, Then update the MAC address entry event to the local MAC address entry, and unicast send the MAC address entry event to the stacking device with corresponding location information; if not found, the instruction will not be executed.

Further, the stacking device specifically includes a control board and at least one upstream board, wherein the control board includes a main control board and a standby control board.

Further, when the stacking device that registers and subscribes to the MAC address entry event with the main control board is a stacking device other than the main control board and the MAC address entry event to be processed is a new event, it specifically includes:

The main control board and other stacking devices each receive the MAC address entry event to be added from their own hardware;

Other stacking devices unicast report the MAC address entry event data received by themselves to the main control board, so that the main control board can control and process them in a unified manner;

The main control board chooses to process the MAC address entry event received earlier according to the sequence of received events and sends hardware synchronization processing, and then multicasts to notify other stacking devices to synchronously process the MAC address entry event processed earlier; The main control board processes the later received MAC address entry events and sends hardware synchronization processing, and then multicasts to notify other stack devices to synchronously process the later processed MAC address entry events.

Further, when the stack device that registers and subscribes to the MAC address entry event with the main control board is a stack device other than the main control board and the MAC address entry event to be processed is an aging event, it specifically includes:

The main control board and other stacking devices each receive the MAC address entry event to be aged out from the hardware;

Other stacking devices unicast report the received MAC address entry event data to the main control board, so that the main control board performs unified control and processing according to the sequence of received events;

The main control board judges whether the location information of the MAC address entry event to be aged is consistent with the location information of the corresponding MAC address entry event stored in its own control plane, and performs separate processing according to whether they are consistent.

Further, if the main control board judges that the location information of the MAC address entry event to be aged is inconsistent with the location information of the corresponding MAC address entry event stored on its own control plane, the main control board notifies and reports the MAC address entry to be aged The stacking device of the event re-adds the event of the MAC address entry to be aged according to the control plane data of the main control board to reset the aging information;

If the main control board judges that the location information of the MAC address entry event to be aged is consistent with the location information of the corresponding MAC address entry event stored on its own control plane, the main control board deletes the MAC address entry to be aged on its own control plane The data of the event is sent to the hardware for synchronous deletion processing, and then the multicast notifies other stack devices to synchronously delete and process the data of the pending MAC address entry event.

Further, it also includes expanding and adding new stacking devices, and the expanding and adding new stacking devices specifically includes:

After the new stacking device goes online, broadcast the device information to all stacking devices in the stacking system. The device information includes location information, uplink port information, and communication address;

After receiving the information, the main control board of the stacking system assigns a stacking system ID to the newly added stacking device, and sends the newly assigned stacking system ID and main control board information to the newly added stacking device in unicast mode. Information including mailing addresses;

A new stacking device records the communication address of the main control board, records the stacking system ID of the device, and registers and subscribes to MAC address entry events with the main control board;

After the main control board receives the registration and subscription MAC address entry event message, it synchronizes the MAC address entry of the newly added stack device for the first time;

The newly added stacking device sends pending MAC address entry events to the main control board, and receives the new event or aging event from the main control board, and enters the normal adding or aging process.

On the other hand, the present invention provides a MAC address synchronization device for OLT equipment, specifically: including at least one processor and a memory, at least one processor and the memory are connected through a data bus, and the memory storage can be controlled by at least one processor The executed instruction is used to complete the method for synchronizing the MAC address of the OLT device in the first aspect after being executed by the processor.

Compared with the prior art, the present invention has the beneficial effects of adopting the single control plane characteristic of the stacking system, performing MAC processing in a unified order through the MAC events received by the main control board, ensuring the timing of the synchronization of the MAC address table, and solving the problem of existing problems. The timing anomaly problem existing in the existing technology ensures the reliability of MAC address table synchronization and improves the stability of equipment services.

The aging setting of the present invention ensures that the MAC aging is strictly controlled by the control plane of the main control board, and the main control board judges and takes correct actions by regularly reporting the aging events through the MAC, ensuring the normal progress of the MAC aging, and solving the problems in the prior art The MAC address may not age out of the problem.

The present invention flexibly adopts multicast and unicast modes during the MAC address synchronization process, reduces required network bandwidth, can avoid broadcast storms, improves MAC address table synchronization efficiency, and makes user experience good.

The invention can flexibly expand the uplink port of the system without destroying the synchronous interaction process of the MAC address table of the existing equipment, realize the purpose of adding stacking equipment, achieve the beneficial effect of improving the system bandwidth, and make the system have a longer life cycle, reducing operator input costs.

【Description of drawings】

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the following will briefly introduce the drawings that are used in the embodiments of the present invention. Apparently, the drawings described below are only some embodiments of the present invention, and those skilled in the art can obtain other drawings according to these drawings without creative efforts.

Fig. 1 is a schematic diagram of the composition of the PON system provided by the background technology of the present invention;

Fig. 2 is the composition schematic diagram of the OLT equipment that background technology of the present invention provides;

FIG. 3 is a flow chart of a MAC address synchronization method for an OLT device provided in Embodiment 1 of the present invention;

FIG. 4 is a detailed flow chart of a MAC address synchronization method for an OLT device provided in Embodiment 1 of the present invention;

FIG. 5 is a flow chart of MAC address synchronization between the main control board and the standby control board when an event is added according to Embodiment 2 of the present invention;

FIG. 6 is a flow chart of MAC address synchronization between the main control board and the standby control board during an aging event provided by Embodiment 2 of the present invention;

FIG. 7 is a flow chart of expanding and adding stacking devices provided by Embodiment 3 of the present invention;

FIG. 8 is a schematic structural diagram of an apparatus for synchronizing a MAC address of an OLT device according to Embodiment 4 of the present invention.

【detailed description】

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

The present invention is an architecture of a system with specific functions. Therefore, in the specific embodiments, the functional logic relationship of each structural module is mainly described, and the specific software and hardware implementation methods are not limited.

In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other. The present invention will be described in detail below with reference to the drawings and embodiments.

Example 1:

As shown in Figure 3, the embodiment of the present invention provides a MAC address synchronization method of an OLT device, the specific steps are as follows:

Step 1: The stacking system completes the election of the active and standby control boards, and multicasts the information of the active control board to all stacking devices in the stacking system. Referring to Fig. 2, in this preferred embodiment, the stacking device in the stacking system refers to the device responsible for service forwarding in the OLT stacking system, which specifically includes a control board and at least one uplink board, where the control board completes the active/standby election and divides The main control board and the standby control board, and multiple uplink boards can be inserted, and the inserted uplink boards can be divided into uplink board 1, uplink board 2 and uplink board N.

Step 2: The stack device registers and subscribes to MAC address entry events with the main control board. It should be noted that all stacking devices (including the main control board itself) can register and subscribe to MAC address entry events with the main control board, and the main control board can also notify the main control board itself during multicast, so as to realize the Unification of control plane and hardware level.

Step 3: The forwarding plane of the stack device reports pending MAC address entry events in batches to the control plane of the main control board. In this preferred embodiment, the information of the MAC address entry event includes but not limited to: event type, MAC address, VLAN ID, location information, and MAC address type. Wherein, the event type includes a new event and an aging event, respectively corresponding to the add and delete operations; the location information includes one or more of a slot number, a logical port number, and a physical port number; the MAC address type Including dynamic or static two.

Step 4: The control plane of the main control board performs local MAC address entry processing on the MAC address entry events to be processed in sequence, and multicasts the MAC address entry events to all stack devices that have subscribed to the corresponding events.

Step 5: After the stack device receives the MAC address entry event, it processes the local MAC address entry.

As shown in FIG. 4, it is a detailed flow chart of the above synchronization method. Specifically, taking stacking

devices

1, 2, and n as an example, the detailed process is as follows:

Step 100: The stacking system completes the master/standby election of the control boards, and notifies the information of the master control boards of all stacking devices in the stacking system.

Step 200: Stack device 1 registers with the main control board to subscribe to MAC address entry events; stack device 2 registers with the main control board to subscribe to MAC address entry events; stack device n registers with the main control board to subscribe to MAC address entry events.

Step 300: The forwarding plane of the stacking device 1 reports the MAC address entry events to be processed in batches to the control plane of the main control board; the forwarding plane of the stacking device 2 reports the MAC address entry events to be processed in batches to the control plane of the main control board; The forwarding plane of device n reports the pending MAC address entry events to the control plane of the main control board in batches.

Step 400: The control plane of the main control board of the stacking system receives pending MAC address entry events, processes the pending MAC address entry events according to the time sequence of the received events, and first determines the pending MAC address entry events type, if the event type is a new event, go to step 401, and if the event type is an aging event, go to step 402.

Step 401: the control plane of the main control board searches for the corresponding local MAC address entry according to the MAC address and VLAN ID combination key value in the MAC address entry event to be processed; if found, then updates the local MAC address entry, And multicast the event of the MAC address entry to the stack device that has subscribed to the event; if it cannot be found, add the event of the MAC address entry to the local MAC address entry and send the event of the MAC address entry through multicast To stack devices subscribed to this event.

Step 402: The control plane of the main control board searches for the corresponding local MAC address entry according to the combined key value of the MAC address and the VLAN ID in the MAC address entry event to be processed; if found, and the location information of the two is consistent, then Delete the corresponding local MAC address entry, and multicast the MAC address entry event to the stack device that has subscribed to the event; if found, but the location information of the two is inconsistent, update the MAC address entry event to the local MAC address entry, and unicast the event of the MAC address entry to the stack device with the corresponding location information; if it cannot be found, the instruction will not be executed, and nothing will be done. Among them, the key value is the combination of MAC address and VLAN ID, which is equivalent to a key value containing two values, one of which is the MAC address and the other is the VLAN ID.

Step 500: Stack device 1 performs local MAC address entry processing after receiving the corresponding MAC address entry event, and adds or deletes the MAC address hardware entry on the forwarding plane of the device; stack device 2 receives the corresponding MAC address entry event Then process the local MAC address entry, add or delete the MAC address hardware entry on the forwarding plane of the device; after receiving the corresponding MAC address entry event, the stack device n performs local MAC address entry processing, adding or deleting the forwarding plane of the device MAC address hardware entries on the face.

Through the above process of this embodiment, the present invention adopts the single control plane characteristic of the stacking system, performs MAC processing in a unified order through the MAC events received by the main control board, ensures the timing of the synchronization of the MAC address table, and solves the problems existing in the prior art The problem of abnormal timing ensures the reliability of MAC address table synchronization and improves the stability of device services. Moreover, the aging setting of the present invention ensures that MAC aging is strictly controlled by the control plane of the main control board, and the main control board judges and takes correct actions by regularly reporting aging events through the MAC to ensure the normal progress of MAC aging, which solves the problem of prior art There is a problem that the MAC address may not be aged. In addition, the present invention flexibly adopts multicast and unicast modes during the MAC address synchronization process, reduces required network bandwidth, can avoid broadcast storms, improves MAC address table synchronization efficiency, and makes user experience good.

Example 2:

Embodiment 2 provides a method for synchronizing the MAC address of an OLT device. On the basis of Embodiment 1, it is determined that the stacking device that registers and subscribes to the MAC address entry event with the main control board is other stacking devices except the main control board ( In this embodiment, the standby control board is used as an example for illustration. It should be noted that the processing logic of all stack devices receiving pending MAC address entry events is the same. standby control board), and through the interaction between the main control board and the standby control board, the MAC address synchronization method of the present invention will be further described. The preconditions of Embodiment 2 are: the primary and secondary elections have been completed, the primary control board notifies the secondary control panel of information, and the secondary control panel registers and subscribes to MAC address entry events with the primary control panel.

As shown in Figure 5, when the MAC address entry event to be processed is a new event, the specific MAC address synchronization process between the main control board and the standby control board includes:

Step 101: the main control board and the standby control board respectively receive the event of the MAC address entry to be added from their own hardware. Among them, one event can contain multiple pieces of MAC data. Here, two pieces of MAC data are used as an example: the main control board receives the new events of MAC1 and MAC2, and the standby control board receives the new events of MAC3 and MAC4.

Step 102: The standby control board sends a unicast report of the MAC address entry event data received by itself to the main control board, so that the main control board controls and processes it uniformly. Among them, the MAC address entry event data includes but not limited to the following information: event type (add), MAC address, VLAN ID, location information (slot number, logical port number, physical port number), MAC address type (static) .

Step 103: The main control board chooses to process the MAC address entry events received earlier according to the sequence of received events and sends hardware synchronization processing, and then multicasts the standby control board to process the MAC address table entries processed earlier item event; the main control board processes the later received MAC address entry event and sends hardware synchronization processing, and then multicasts the standby control board to synchronously process the later processed MAC address entry event.

Specifically, assuming that the internal reporting of the MAC1 and MAC2 events of the main control board is prior to the receipt of the MAC3 and MAC4 events of the standby control board, the MAC1 and MAC2 events are processed first. The main control board establishes the main control plane and manages the MAC address table through the data structure, adds MAC1 and MAC2 data in it, and sends it to the hardware for synchronous processing, and then notifies the standby control board to add MAC1 and MAC2 through multicast. After receiving the data, the standby control board establishes a standby control plane, adds MAC1 and MAC2 data on the standby control plane, and sends them to the hardware. After processing the data of MAC1 and MAC2, the main control board processes MAC3 and MAC4 again, adds its data to the active control plane and sends it to the hardware, and then notifies the standby control board to add MAC3 and MAC4 through multicast. After receiving the data, the standby control board adds MAC3 and MAC4 data to the standby control plane, and sends the hardware. In this step, because only the standby control board has subscribed to the MAC address entry event to the main control board, the main control board only multicasts the standby control board after processing the event. If other stack devices also subscribe to the MAC address entry event, the main control board will multicast and notify all stack devices that have subscribed to the event to perform synchronous processing after processing the event.

Through the above steps, it can be ensured that the hardware MAC master and backup are consistent, the software MAC master and backup are consistent, and the hardware and software data are consistent, completing the MAC synchronization process. In addition, the unified control of the single control plane guarantees the reliability of MAC synchronization. The sequence of MAC events received by the main control board (including local reporting and reporting by the standby control board) uniformly performs MAC processing on the main and standby control boards to ensure that the MAC address table The timing of synchronization solves the problem of abnormal timing in the prior art.

As shown in Figure 6, when the MAC address entry event to be processed is an aging event, the specific MAC address synchronization process between the main control board and the standby control board includes:

Step 201: the main control board and the standby control board each receive an event of a MAC address entry to be aged out from the hardware. It should be noted that the prerequisite for this step is that the synchronization (dynamic addition) of MAC1 and MAC2 generated by the main control board and MAC3 and MAC4 generated by the standby control board has been completed. In this way, after adding for a period of time, the MAC with no traffic on this board will report an aging event. Let's take MAC1 and MAC3 as an example (other MACs will have similar processing before traffic disconnection and control deletion): keep the traffic of MAC1 on the main control board and MAC3 on the standby control board, because the main control board has synchronously added MAC3 and backup The control board has synchronously added MAC1, but each hardware has no MAC traffic, so after a period of time, the main control board receives the aging event of MAC3 from the hardware, and the standby control board receives the aging event of MAC1 from the hardware.

Step 202: The standby control board sends a unicast report of the received MAC address entry event (MAC1) data to the main control board, so that the main control board performs unified control and processing according to the sequence of received events. Wherein, the MAC address entry event data includes but not limited to the following information: event type (aging), MAC address, VLAN ID, location information (slot number).

Step 203: The main control board judges whether the location information of the MAC address entry event to be aged is consistent with the location information of the corresponding MAC address entry event stored in its own control plane, and performs separate processing according to whether it is consistent.

Step 204: If the main control board judges that the location information of the MAC address entry event to be aged is inconsistent with the location information of the corresponding MAC address entry event stored in its own control plane, the main control board notifies and reports the MAC address entry event to be aged The control board of the event re-adds the event of the MAC address entry to be aged according to the control plane data of the main control board to reset the aging information.

Specifically, it is assumed that the main control board first receives and processes the aging report of the internal MAC3, and then processes the received aging report of the MAC1 from the standby control board. Then the main control board finds MAC3 on the control plane and compares the location information of the aging data of MAC3 with the own board, but the location information of MAC3 stored in the control plane is the standby control board. Aging deletion is required, so the control plane data does not need to be modified, and the main control board needs to internally notify the board that reported the aging event to re-add MAC3 according to the control plane data to reset the aging information. The main control board then processes the aging event of MAC1 reported by the standby control board. Similar to the above, the main control board finds MAC1 on the control plane and compares the location information of the aging event of MAC1 (standby control board) with the location information stored locally (master boards) are inconsistent, so there is no need to aging delete, and the control plane data does not need to be modified. The main control board unicasts the standby control board that reported the aging event to add MAC1 again, and the standby control board receives the command from the main control board, and re-adds MAC1 to reset aging information.

Step 205: If the main control board determines that the location information of the MAC address entry event to be aged is consistent with the location information of the corresponding MAC address entry event stored on its own control plane, the main control board deletes the MAC address entry event to be aged on its own control plane. The data of the address entry event is sent to the hardware for synchronous deletion processing, and then the standby control board is notified by multicast to synchronously delete and process the data of the MAC address entry event to be aged.

Specifically, when the aging event generated after the traffic disconnection really needs to be deleted by MAC aging, take MAC2 and MAC4 as an example: disconnect the traffic of the main control board MAC2 and the traffic of the standby control board MAC4, so the main control board is The hardware receives the aging event of MAC2, and the standby control board receives the aging event of MAC4 from the hardware. The standby control board sends the MAC4 aging event data unicast report to the main control board, and the main control board performs logic judgment control processing. Wherein the MAC address entry event data includes but not limited to the following information: event type (aging), MAC address, VLAN ID, location information (slot number). Furthermore, assuming that the internal reporting of the MAC2 aging event on the main control board precedes the receipt of the MAC4 aging event on the standby control board, MAC2 is processed first. The main control board finds MAC2 on the control plane and compares the location information of the MAC2 aging event with the location information stored on the control plane. They are both the main control board. It is judged that the traffic of MAC2 is disconnected and needs to be deleted, so the main control board is deleted on the active control plane. MAC2 data, and send hardware to delete MAC2, and then notify the standby control board to delete MAC2 through multicast. After receiving the data, the standby control board deletes MAC2 data on the standby control plane, and sends hardware to delete MAC2. Then, the main control board performs MAC4 processing again. The main control board finds MAC4 on the control plane and compares the location information of the MAC4 aging event with the location information stored on the control plane. They are all standby control boards. It is judged that the traffic of MAC4 is disconnected and needs to be deleted. , so the main control board deletes the data of MAC4 on the active control plane, and sends the hardware to delete MAC4, and then notifies the standby control board to delete MAC4 through multicast. After receiving the data, the standby control board deletes the MAC4 data on the standby control plane. And issue hardware to delete MAC4. In this step, because only the standby control board has subscribed to the MAC address entry event to the main control board, the main control board only multicasts the standby control board after processing the event. If other stack devices also subscribe to the MAC address entry event, the main control board will multicast and notify all stack devices that have subscribed to the event to perform synchronous processing after processing the event.

Through the above steps, it can be ensured that the hardware MAC master and backup are consistent, the software MAC master and backup are consistent, and the hardware and software data are consistent, completing the MAC synchronization process. This aging setting ensures that the MAC aging is strictly controlled by the main control plane, and the MAC with no traffic on this board regularly reports the aging event to the main control board to judge and take the correct action to ensure the normal progress of MAC aging, which solves the problems existing in the existing technology A problem where MAC addresses may not age out. In addition, the process of MAC aging deletion is controlled by the single control plane of the main control board. According to the sequence of MAC aging events received by the main control board (including local reporting and reporting by the standby control board), MAC processing is performed on the main and standby control boards to ensure that the MAC address tables are synchronized. timing.

Example 3:

Embodiment 3 provides a method for synchronizing MAC addresses of OLT devices, which, on the basis of Embodiment 1 or Embodiment 2, further includes a process of extending and adding a stacking device.

As shown in Figure 7, the process of expanding and adding a new stacking device specifically includes:

Step 301: A newly added stacking device is inserted into the frame. In this embodiment, the newly added stacking device is a newly added uplink board.

Step 302: After the newly added stacking device goes online, the device information is broadcast to all stacking devices in the stacking system. Among them, the device information includes but not limited to the following information: location information (such as slot port), uplink port information (such as logical port number, physical port number), communication address (such as IP address, MAC address).

Step 303: After receiving the information, the main control board of the stacking system assigns a stacking system ID to the newly added stacking device, and sends the newly assigned stacking system ID and main control board information to the newly added stacking device in unicast mode. Wherein, the main control board information includes but not limited to the following information: communication address (such as IP address, MAC address).

Step 304: The newly added stacking device records the communication address of the main control board, records the stacking system ID of the device, and registers and subscribes to MAC address entry events with the main control board.

Step 305: After the main control board receives the event message of registering and subscribing to the MAC address entry, it synchronizes the MAC address entry of the newly added stack device for the first time. This is to enable the newly added stack device to synchronize the MAC address learned by the main control board.

Step 306: The newly added stacking device sends the pending MAC address entry event to the main control board, receives the new event or aging event from the main control board, and enters a normal new adding or aging process. Specifically, the forwarding plane of the newly added stacking device reports MAC address entry events in batches to the control plane of the main control board; after processing and multicasting on the control plane of the main control board, the forwarding plane of the newly added stacking device receives the subscribed MAC address entries events, and then add or delete MAC address entries on the forwarding plane.

Through the above process of this embodiment, the present invention can flexibly expand the uplink port of the system without destroying the MAC address table synchronization interaction process of the existing device, realize the purpose of adding stacking devices, and achieve the beneficial effect of improving the system bandwidth , so that the system has a longer life cycle and reduces the operator's investment cost.

Example 4:

On the basis of the MAC address synchronization method of the OLT device provided in the above-mentioned embodiment 1 to embodiment 3, the present invention also provides a MAC address synchronization device of the OLT device that can be used to implement the above method, as shown in FIG. 8 , is a schematic diagram of the device architecture of the embodiment of the present invention. The MAC address synchronization device of the OLT device in this embodiment includes one or more processors 21 and a memory 22 . Wherein, one processor 21 is taken as an example in FIG. 8 .

The processor 21 and the memory 22 may be connected via a bus or in other ways. In FIG. 8 , connection via a bus is taken as an example.

Memory 22, as a non-volatile computer-readable storage medium, can be used to store non-volatile software programs, non-volatile computer-executable programs and modules, such as the MAC of the OLT device in Embodiment 1 to Embodiment 3 Address synchronization method. The processor 21 executes various functional applications and data processing of the MAC address synchronization device of the OLT device by running non-volatile software programs, instructions and modules stored in the memory 22, that is, to realize the implementation of Embodiment 1 to Embodiment 3. The MAC address synchronization method of the OLT device.

The memory 22 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state storage devices. In some embodiments, the memory 22 may optionally include a memory that is remotely located relative to the processor 21, and these remote memories may be connected to the processor 21 through a network. Examples of the aforementioned networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

The program instruction/module is stored in the memory 22, and when executed by one or more processors 21, the MAC address synchronization method of the OLT device in the above-mentioned embodiment 1 to embodiment 3 is executed, for example, executing the above-described Fig. 1 to The various steps shown in Figure 7.

Those of ordinary skill in the art can understand that all or part of the steps in the various methods of the embodiments can be completed by instructing related hardware through a program. The program can be stored in a computer-readable storage medium, and the storage medium can include: only Read Only Memory (Read Only Memory, abbreviated as: ROM), Random Access Memory (Random Access Memory, abbreviated as: RAM), magnetic disk or optical disc, etc.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. within range.

Claims

A kind of MAC address synchronous method of OLT equipment, it is characterized in that, comprising:

The stacking system completes the master/standby election of the control boards, and notifies the master control board information to all stacking devices in the stacking system in multicast mode;

The stack device registers and subscribes to MAC address entry events with the main control board;

The forwarding plane of the stacking device reports pending MAC address entry events in batches to the control plane of the main control board;

The control plane of the main control board performs local MAC address entry processing on the MAC address entry events to be processed in sequence, and multicasts the MAC address entry events to all stack devices that have subscribed to the corresponding events;

After the stack device receives the MAC address entry event, it processes the local MAC address entry.
The MAC address synchronization method of OLT equipment according to claim 1, is characterized in that, the information of described MAC address entry event comprises: event type, MAC address, VLAN ID, location information and MAC address type, wherein, described Event types include new events and aging events.
The MAC address synchronization method of OLT equipment according to claim 2, wherein, when the pending MAC address table entry event is a newly added event, the control plane of the main control board is the MAC address table to be processed in sequence The event is processed by the local MAC address entry, and the MAC address entry event is multicast to all stack devices that have subscribed to the corresponding event, including:

The control plane of the main control board searches for the corresponding local MAC address entry according to the MAC address and the VLAN ID combination key value in the MAC address entry event to be processed;

If found, update the local MAC address entry, and multicast the MAC address entry event to subscribed stack devices; if not found, add the MAC address entry event to the local MAC address entry, And multicast the MAC address entry event to subscribed stack devices.
The MAC address synchronization method of OLT equipment according to claim 2, characterized in that, when the MAC address entry event to be processed is an aging event, the control plane of the main control board is the MAC address entry to be processed according to the sequence The event is processed by the local MAC address entry, and the multicast MAC address entry event is sent to all stack devices that have subscribed to the corresponding event, including:

The control plane of the main control board searches for the corresponding local MAC address entry according to the MAC address and the VLAN ID combination key value in the MAC address entry event to be processed;

If it is found, and the location information of the two is consistent, delete the corresponding local MAC address entry, and multicast the event of the MAC address entry to the subscribed stack device; if it is found, but the location information of the two is inconsistent, Then update the MAC address entry event to the local MAC address entry, and unicast send the MAC address entry event to the stacking device with corresponding location information; if not found, the instruction will not be executed.
The MAC address synchronization method for an OLT device according to claim 2, wherein the stacking device specifically includes a control board and at least one upstream board, wherein the control board includes a main control board and a standby control board.
The MAC address synchronization method of OLT equipment according to claim 5, it is characterized in that, the stacking equipment that registers and subscribes MAC address entry event to main control board is other stacking equipment except main control board and the MAC address table to be processed When the event is a new event, it specifically includes:

The main control board and other stacking devices each receive the MAC address entry event to be added from their own hardware;

Other stacking devices unicast report the received MAC address entry event data to the main control board, so that the main control board can control and process them uniformly;

The main control board chooses to process the MAC address entry event received earlier according to the sequence of received events and sends hardware synchronization processing, and then multicasts to notify other stacking devices to synchronously process the MAC address entry event processed earlier; The main control board processes the later received MAC address entry events and sends hardware synchronization processing, and then multicasts to notify other stack devices to synchronously process the later processed MAC address entry events.
The MAC address synchronization method of OLT equipment according to claim 5, it is characterized in that, the stacking equipment that registers and subscribes MAC address entry event to main control board is other stacking equipment except main control board and the MAC address table to be processed When the item event is an aging event, it specifically includes:

The main control board and other stacking devices each receive the MAC address entry event to be aged out from the hardware;

Other stacking devices unicast report the received MAC address entry event data to the main control board, so that the main control board performs unified control and processing according to the sequence of received events;

The main control board judges whether the location information of the MAC address entry event to be aged is consistent with the location information of the corresponding MAC address entry event stored in its own control plane, and performs separate processing according to whether they are consistent.
The MAC address synchronization method of OLT equipment according to claim 7, is characterized in that:

If the main control board judges that the location information of the MAC address entry event to be aged is inconsistent with the location information of the corresponding MAC address entry event stored on its own control plane, the main control board notifies the stack of the MAC address entry event to be aged out. The device re-adds the event of the MAC address entry to be aged according to the control plane data of the main control board to reset the aging information;

If the main control board judges that the location information of the MAC address entry event to be aged is consistent with the location information of the corresponding MAC address entry event stored on its own control plane, the main control board deletes the MAC address entry to be aged on its own control plane The data of the event is sent to the hardware for synchronous deletion processing, and then the multicast notifies other stack devices to synchronously delete and process the data of the pending MAC address entry event.
The MAC address synchronization method of OLT equipment according to claim 1, is characterized in that, also comprises expanding newly-increased stacking equipment, and described expanding newly-increased stacking equipment specifically comprises:

After the new stacking device goes online, broadcast the device information to all stacking devices in the stacking system. The device information includes location information, uplink port information, and communication address;

After receiving the information, the main control board of the stacking system assigns a stacking system ID to the newly added stacking device, and sends the newly assigned stacking system ID and main control board information to the newly added stacking device in unicast mode. Information including mailing addresses;

A new stacking device records the communication address of the main control board, records the stacking system ID of the device, and registers and subscribes to MAC address entry events with the main control board;

After the main control board receives the registration and subscription MAC address entry event message, it synchronizes the MAC address entry of the newly added stack device for the first time;

The newly added stacking device sends pending MAC address entry events to the main control board, and receives the new event or aging event from the main control board, and enters the normal adding or aging process.
A kind of MAC address synchronization device of OLT equipment, it is characterized in that:

It includes at least one processor and a memory, the at least one processor and the memory are connected through a data bus, the memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the processor , for completing the MAC address synchronization method of the OLT device described in any one of claims 1-9.