CN113242481B - MAC address synchronization method and device of OLT equipment - Google Patents
MAC address synchronization method and device of OLT equipment Download PDFInfo
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- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0005—Switch and router aspects
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q11/0067—Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring
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- H04L2101/60—Types of network addresses
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Abstract
The invention relates to a MAC address synchronization method and device of OLT equipment. The method mainly comprises the following steps: the stacking system completes the master-slave election of the control panel and notifies the information of the master control panel to all stacking equipment in the stacking system in a multicast mode; the stacking equipment registers and subscribes an MAC address table entry event to the main control board; the stacking equipment forwarding plane reports the MAC address table entry events to be processed to the control plane of the main control panel in batch; the control surface of the main control panel processes the local MAC address table item of the MAC address table item event to be processed according to the time sequence, and multicasts and sends the MAC address table item event to all the stacking equipment subscribed with the corresponding event; and the stacking equipment processes the local MAC address table entry after receiving the MAC address table entry event. The invention can ensure the time sequence of the MAC address table synchronization, solve the problem of abnormal time sequence in the prior art, ensure the normal operation of MAC aging, flexibly expand the uplink port of the system and realize the purpose of adding a new stacking device.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of communication, in particular to a method and a device for synchronizing MAC addresses of OLT equipment, which are suitable for a rack-mounted three-layer switch, a router or the OLT equipment.
[ background of the invention ]
The existing broadband access technology is mainly classified into a copper wire access technology (such as various DSL technologies) and an Optical access technology, and a Passive Optical Network (PON) technology is an Optical access technology for point-to-multipoint transmission, and mainly includes an Ethernet Passive Optical Network (EPON), a Gigabit Passive Optical Network (GPON), and the like. The PON system generally includes an OLT (Optical Line Terminal), an ODN (Optical Distribution Network), and an ONU (Optical Network Unit)/ONT (Optical Network Terminal), as shown in fig. 1.
In the above-mentioned PON system, the OLT is a core device of the PON system, which is equivalent to a switch or a router in a conventional communication network, and is also a multi-service providing platform, which is generally placed at a central office end and provides an optical fiber interface of a passive optical network facing a user. The main functions realized by the method are as follows:
and the upper network is connected to finish the uplink access of the PON system.
The ODN network (composed of optical fibers and passive optical splitters) is used for connecting the customer premise equipment ONU in a downstream mode, and functions of controlling, managing, ranging and the like of the customer premise equipment ONU are achieved.
As shown in fig. 2, the OLT apparatus generally consists of the following parts:
a control board (also called a main control board or a super control unit) generally has 2 main control boards and 2 backup control boards for one OLT.
The dc power board (power supply from negative 48 v of the switching power supply) is also generally a main/standby 2 board.
Fan unit (mainly managing heat dissipation of the device and environmental monitoring, etc.).
The uplink board is connected to a convergence switch such as a BRAS (Broadband Remote Access Server) or directly connected to equipment such as the BRAS and SR (Service Router) equipment through transmission, if there is an IPTV Service, corresponding BNG (Broadband Network Gateway) equipment needs to be accessed, and both the BRAS and the SR belong to the BNG.
A downstream board (also called a service board or a PON board), generally, an OLT apparatus has a multi-port PON board (for example, one board has 16 PON ports), and each port is connected to an ONU terminal through an optical splitter (not more than 1: 128).
Besides the above main components, the OLT equipment further includes a frame (or service frame), and according to service needs, the OLT may further insert plates such as a TDM service version, an ethernet service version, a multi-path E1 service version, and these plates may be inserted in a mixed manner.
The control board that present OLT equipment provided provides a plurality of upstream ports, in order to make full use of the upstream port of the master spare control board, the forwarding plane of the master spare control board works under 1+1 mode, namely: the uplink ports of the main control board and the standby control board are all in a forwarding mode; for the forwarding scenario, the forwarding planes of the main and standby control boards need to implement MAC address synchronization of the two-layer forwarding service.
Under the condition that hardware cannot realize synchronization, the conventional software implementation technology is that a main control board and a standby control board transmit an MAC address event to a local control board, and the local control board writes the local MAC address event into the transmission board in a dynamic mode and transmits the MAC address event to an opposite control board; and after receiving the synchronous MAC address event, the opposite-end control plane needs to write in the forwarding plane in a static mode.
Based on the foregoing scenario, the following problems exist with the solutions implemented in the prior art:
when the master control board and the slave control board synchronously write and delete the MAC address table items, the time sequence has problems.
The MAC address of the forwarding surface of the main control board and the standby control board cannot be aged.
The expansion of new stacked devices is not supported, i.e., dynamic expansion of the uplink port is not supported.
In view of this, how to overcome the defects existing in the prior art and solve the above problems existing in the prior art is a problem to be solved in the technical field.
[ summary of the invention ]
Aiming at the defects or improvement requirements in the prior art, the invention provides the MAC address synchronization method and the MAC address synchronization device of the OLT equipment, which adopt the single control surface characteristic of a stacking system and carry out MAC processing in a unified way through the sequence of the MAC events received by a main control board, thereby ensuring the synchronous time sequence of the MAC address table and solving the problem of abnormal time sequence in the prior art; in the MAC address synchronization process, multicast and unicast modes are flexibly adopted, the required network bandwidth is reduced, the occurrence of broadcast storms can be avoided, the MAC address table synchronization efficiency is improved, and the user experience is good; under the condition of not destroying the synchronous interaction process of the MAC address table of the existing equipment, the uplink port of the system can be flexibly expanded, the purpose of improving the bandwidth of the system is achieved, the system has a longer life cycle, and the investment cost of operators is reduced.
The embodiment of the invention adopts the following technical scheme:
in a first aspect, the present invention provides a method for synchronizing MAC addresses of OLT devices, including:
the stacking system completes the master-slave election of the control panel and notifies the information of the master control panel to all stacking equipment in the stacking system in a multicast mode;
the stacking equipment registers and subscribes an MAC address table entry event to the main control board;
the stacking equipment forwarding plane reports the MAC address table entry events to be processed to the control plane of the main control panel in batch;
the control surface of the main control panel processes the local MAC address table item of the MAC address table item event to be processed according to the time sequence, and multicasts and sends the MAC address table item event to all the stacking equipment subscribed with the corresponding event;
and the stacking equipment processes the local MAC address table entry after receiving the MAC address table entry event.
Further, the information of the MAC address table entry event includes: event type, MAC address, VLAN ID, location information, and MAC address type, wherein the event type includes an addition event and an aging event.
Further, when the MAC address table entry event to be processed is a newly added event, the control plane of the main control board performs local MAC address table entry processing on the MAC address table entry event to be processed according to a time sequence, and multicast-sends the MAC address table entry event to all stacking devices subscribed with the corresponding event specifically includes:
the control surface of the main control panel searches a corresponding local MAC address table entry according to the MAC address and VLAN ID combined key value in the MAC address table entry event to be processed;
if the MAC address table item is found, updating a local MAC address table item, and multicasting and sending the MAC address table item event to the subscribed stacking equipment; if the MAC address table item event is not searched, adding the MAC address table item event into a local MAC address table item, and multicasting and sending the MAC address table item event to the subscribed stacking equipment.
Further, when the MAC address table entry event to be processed is an aging event, the control plane of the main control board performs local MAC address table entry processing on the MAC address table entry event to be processed according to a time sequence, and multicast-sends the MAC address table entry event to all stacking devices subscribed with the corresponding event specifically includes:
the control surface of the main control panel searches a corresponding local MAC address table entry according to the MAC address and VLAN ID combined key value in the MAC address table entry event to be processed;
if the two pieces of position information are found to be consistent, deleting the corresponding local MAC address table item, and multicasting and sending the MAC address table item event to the subscribed stacking equipment; if the MAC address table entry event is found out, but the position information of the MAC address table entry event and the position information of the local MAC address table entry are inconsistent, the MAC address table entry event is updated to the local MAC address table entry, and the MAC address table entry event is sent to the stacking equipment with the corresponding position information in a unicast mode; if not, the instruction is not executed.
Further, the stacking device specifically comprises a control board and at least one uplink board, wherein the control board comprises a main control board and a standby control board.
Further, when the stacking device that registers the subscription MAC address table entry event with the main control board is another stacking device except the main control board and the MAC address table entry event to be processed is a newly added event, the method specifically includes:
the main control board and other stacking devices respectively receive an MAC address table entry event to be newly added from own hardware;
other stacking equipment unicast and report the received MAC address table entry event data to the main control board so as to enable the main control board to uniformly control and process;
the main control board firstly processes the MAC address table entry event received firstly according to the sequence of the received events and issues hardware synchronous processing, and then multicast and inform other stacking equipment to synchronously process the MAC address table entry event processed firstly; the main control board post-processes the post-received MAC address table item event and issues hardware synchronous processing, and then multicast to inform other stacking equipment to synchronously process the post-processed MAC address table item event.
Further, when the stacking device that registers the subscription MAC address table entry event with the master control board is another stacking device except the master control board and the MAC address table entry event to be processed is an aging event, the method specifically includes:
the main control board and other stacking equipment respectively receive MAC address table entry events to be aged from hardware;
other stacking equipment unicast and report the received MAC address table entry event data to the main control board, so that the main control board performs unified control processing according to the sequence of the received events;
the main control board judges whether the position information of the MAC address table entry event to be aged is consistent with the position information of the corresponding MAC address table entry event stored in the control plane of the main control board, and processes the MAC address table entry event respectively according to the consistency.
Further, if the master control board judges that the position information of the MAC address table entry event to be aged is inconsistent with the position information of the corresponding MAC address table entry event stored in the control plane of the master control board, the master control board informs the stacking equipment reporting the MAC address table entry event to be aged to re-add the MAC address table entry event to be aged according to the control plane data of the master control board so as to reset the aging information;
if the main control board judges that the position information of the MAC address table entry event to be aged is consistent with the position information of the corresponding MAC address table entry event stored in the control board of the main control board, the main control board deletes the data of the MAC address table entry event to be aged on the control board of the main control board and sends hardware for synchronous deletion processing, and then multicast notifies other stacking equipment to synchronously delete the data of the MAC address table entry event to be aged.
Further, still include the newly-increased equipment of stacking of extension, the newly-increased equipment of stacking of extension specifically includes:
after newly-added stacking equipment is on line, notifying the equipment information to all stacking equipment in a stacking system in a broadcasting mode, wherein the equipment information comprises position information, uplink port information and a communication address;
after receiving the information, the main control board of the stacking system allocates a stacking system ID for the newly added stacking equipment and sends the newly allocated stacking system ID and the main control board information to the newly added stacking equipment in a unicast mode, wherein the main control board information comprises a communication address;
newly-added stacking equipment records a communication address of a main control board, records a stacking system ID of the equipment, and registers and subscribes an MAC address table entry event to the main control board;
after receiving the registered and subscribed MAC address table entry event message, the main control board synchronizes the MAC address table entries of the newly added stacking equipment for the first time;
and the newly-added stacking equipment sends the MAC address table entry event to be processed to the main control board, receives the newly-added event or the aging event of the main control board and enters a normal newly-added or aging process.
On the other hand, the present invention provides a MAC address synchronization apparatus for an OLT device, which specifically includes: the at least one processor and the memory are connected through a data bus, and the memory stores instructions executable by the at least one processor, and the instructions are used for completing the MAC address synchronization method of the OLT device in the first aspect after being executed by the processor.
Compared with the prior art, the invention has the beneficial effects that: the single control surface characteristic of a stacking system is adopted, MAC processing is carried out in a unified mode through the sequence of the MAC events received by the main control board, the synchronous time sequence of the MAC address table is guaranteed, the problem of abnormal time sequence in the prior art is solved, the synchronous reliability of the MAC address table is guaranteed, and the service stability of equipment is improved.
The aging setting of the invention ensures that the MAC aging is strictly controlled by the control surface of the main control board, and the aging event is reported by the MAC at regular time and is sent to the main control board to judge and make correct action, thereby ensuring the normal operation of the MAC aging and solving the problem that the MAC address can not be aged in the prior art.
The invention flexibly adopts multicast and unicast modes in the MAC address synchronization process, reduces the required network bandwidth, can avoid the occurrence of broadcast storm, improves the MAC address table synchronization efficiency and ensures that the user experience is 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, realizes the purpose of newly adding stacked equipment, achieves the beneficial effect of improving the bandwidth of the system, enables the system to have longer life cycle and reduces the investment cost of operators.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below. It is obvious that the drawings described below are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
Fig. 1 is a schematic diagram of a PON system according to the background art of the present invention;
fig. 2 is a schematic diagram of an OLT apparatus provided in the background art of the present invention;
fig. 3 is a flowchart of a MAC address synchronization method of an OLT device according to embodiment 1 of the present invention;
fig. 4 is a detailed flowchart of a MAC address synchronization method of an OLT device according to embodiment 1 of the present invention;
fig. 5 is a flowchart of MAC address synchronization when the master control board and the standby control board add an event in embodiment 2 of the present invention;
fig. 6 is a flowchart of MAC address synchronization of the main control board and the standby control board during an aging event according to embodiment 2 of the present invention;
fig. 7 is a flowchart of expanding a newly added stacking apparatus according to embodiment 3 of the present invention;
fig. 8 is a schematic structural diagram of a MAC address synchronization apparatus of an OLT device according to embodiment 4 of the present invention.
[ detailed description ] embodiments
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The present invention is a system structure of a specific function system, so the functional logic relationship of each structural module is mainly explained in the specific embodiment, and the specific software and hardware implementation is not limited.
In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other. The invention will be described in detail below with reference to the figures and examples.
Example 1:
as shown in fig. 3, an embodiment of the present invention provides a method for synchronizing MAC addresses of OLT devices, which includes the following specific steps:
step 1: the stacking system completes the master-slave election of the control panel and notifies the information of the master control panel to all stacking equipment in the stacking system in a multicast mode. Referring to fig. 2, in the preferred embodiment, the stacking device in the stacking system refers to a device in charge of service forwarding in the OLT stacking system, and specifically includes a control board and at least one uplink board, where the control board is divided into a main control board and a standby control board after completing main/standby selection, the uplink board may be inserted into multiple blocks, and the inserted uplink board may be divided into an uplink board 1, an uplink board 2, and an uplink board N.
Step 2: the stacking device registers and subscribes MAC address table entry events to the main control board. It should be noted that all the stacking devices (including the main control board itself) may register and subscribe the MAC address table entry event to the main control board, and the main control board may also notify the main control board itself during multicast, so as to implement the unification of the control plane and the hardware layer of the main control board itself.
And step 3: and the forwarding plane of the stacking equipment reports the MAC address table entry events to be processed to the control plane of the main control panel in batch. In this preferred embodiment, the information of the MAC address table entry event includes, but is not limited to: event type, MAC address, VLAN ID, location information, and MAC address type. The event types comprise newly added events and aging events, and are respectively added and deleted correspondingly; the position information comprises one or more of a slot position number, a logic port number and a physical port number; the MAC address types include both dynamic and static.
And 4, step 4: and the control plane of the main control panel performs local MAC address table item processing on the MAC address table item event to be processed according to a time sequence, and multicasts and sends the MAC address table item event to all the stacking equipment subscribed with the corresponding event.
And 5: and the stacking equipment processes the local MAC address table entry after receiving the MAC address table entry event.
As shown in fig. 4, a detailed flowchart of the synchronization method is shown, specifically, taking the stacking apparatuses 1, 2, n as an example, the detailed flowchart is as follows:
step 100: the stacking system completes the master-slave election of the control boards and informs information of the master control boards of all stacking equipment in the stacking system.
Step 200: the stacking equipment 1 registers and subscribes an MAC address table entry event to the main control board; the stacking equipment 2 registers and subscribes an MAC address table entry event to the main control board; the stacking device n registers the subscribed MAC address table entry event with the master control board.
Step 300: the stack device 1 forwards the MAC address table item events to be processed to the control plane of the main control panel in batch; the stack device 2 forwards the MAC address table entry events to be processed to the control plane of the main control panel in batch; and the n forwarding plane of the stacking equipment reports the MAC address table entry events to be processed to the control plane of the main control panel in batch.
Step 400: the control plane of the stack system main control board receives the MAC address table entry event to be processed, processes the MAC address table entry event to be processed according to the time sequence of the received event, firstly judges the event type of the MAC address table entry event to be processed, if the event type is a new event, the step 401 is entered, and if the event type is an aging event, the step 402 is entered.
Step 401: the control surface of the main control panel searches a corresponding local MAC address table item according to the combination key value of the MAC address and the VLAN ID in the MAC address table item event to be processed; if the event is found, updating a local MAC address table entry, and multicasting and sending the MAC address table entry event to the stacking equipment subscribed with the event; if the MAC address table item event is not searched, adding the MAC address table item event into a local MAC address table item, and multicasting and sending the MAC address table item event to the stacking equipment subscribed with the event.
Step 402: the control surface of the main control panel searches a corresponding local MAC address table item according to the combination key value of the MAC address and the VLAN ID in the MAC address table item event to be processed; if the two pieces of position information are found to be consistent, deleting the corresponding local MAC address table item, and multicasting and sending the MAC address table item event to the stacking equipment subscribed with the event; if the MAC address table entry event is found out, but the position information of the MAC address table entry event and the position information of the local MAC address table entry are inconsistent, the MAC address table entry event is updated to the local MAC address table entry, and the MAC address table entry event is sent to the stacking equipment with the corresponding position information in a unicast mode; if not, the instruction is not executed, and nothing is done. The key value is a combination of the MAC address and the VLAN ID, and is equivalent to a key value including two values, one of which is the MAC address and the other is the VLAN ID.
Step 500: the stacking equipment 1 receives the corresponding MAC address table entry event and then performs local MAC address table entry processing, and adds or deletes the MAC address hardware table entry of the forwarding surface of the equipment; the stacking device 2 receives the corresponding MAC address table item event and then processes the local MAC address table item, and adds or deletes the MAC address hardware table item of the forwarding surface of the device; and after receiving the corresponding MAC address table entry event, the stacking equipment n performs local MAC address table entry processing, and adds or deletes the MAC address hardware table entry of the forwarding plane of the equipment.
Through the above process of this embodiment, the present invention adopts the single control plane characteristic of the stacking system, and performs MAC processing in a unified manner through the MAC event sequence received by the main control board, thereby ensuring the time sequence of the synchronization of the MAC address tables, solving the problem of abnormal time sequence existing in the prior art, ensuring the reliability of the synchronization of the MAC address tables, and improving the service stability of the device. The aging setting of the invention ensures that the MAC aging is strictly controlled by the control surface of the main control board, and the aging event is reported by the MAC at regular time and is sent to the main control board to judge and make correct action, thereby ensuring the normal operation of the MAC aging and solving the problem that the MAC address can not be aged in the prior art. In addition, the invention flexibly adopts multicast and unicast modes in the MAC address synchronization process, reduces the required network bandwidth, can avoid the occurrence of broadcast storm, improves the MAC address table synchronization efficiency and ensures that the user experience is good.
Example 2:
this embodiment 2 provides a MAC address synchronization method for an OLT device, which determines, based on embodiment 1, that a stacking device that registers and subscribes an MAC address table entry event with a main control board is a stacking device other than the main control board (in this embodiment, a standby control board is taken as an example for description, it is to be noted that processing logics of all stacking devices that receive MAC address table entry events to be processed are the same, here, the standby control board is taken as an example, but not limited to the standby control board), and further describes the MAC address synchronization method of the present invention through interaction between the main control board and the standby control board. The precondition of the embodiment 2 is: after the master and standby elections are completed, the master control board informs the standby control board of the information of the master control board, and the standby control board registers and subscribes the MAC address table entry event to the master control board.
As shown in fig. 5, when the MAC address table entry event to be processed is a new event, the specific MAC address synchronization process of the main control board and the standby control board includes:
step 101: the main control board and the standby control board respectively receive the MAC address table entry event to be newly added from the hardware of the main control board and the standby control board. One event may include multiple pieces of MAC data, which is illustrated by 2 pieces of MAC data: the main control board receives the newly added events of the MAC1 and the MAC2, and the standby control board receives the newly added events of the MAC3 and the MAC 4.
Step 102: the standby control board unicasts and reports the received MAC address table entry event data to the main control board so that the main control board can control and process the data in a unified way. The MAC address table entry event data includes, but is 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 firstly processes the MAC address table entry event received firstly according to the sequence of the received events and issues hardware synchronous processing, and then multicast informs the standby control board to synchronously process the MAC address table entry event processed firstly; the main control board post-processes the post-received MAC address table item event and issues hardware synchronous processing, and then multicast informs the standby control board to synchronously process the post-processed MAC address table item event.
Specifically, assuming that the internal reporting of the MAC1 and MAC2 events of the master control board is prior to the reception of the MAC3 and MAC4 events of the slave control board, the MAC1 and MAC2 events are subjected to advanced processing. The main control board establishes a main control plane to manage the MAC address table through a data structure, adds MAC1 and MAC2 data in the MAC address table, sends the data to hardware for synchronous processing, and then informs the standby control board of adding MAC1 and MAC2 in a multicast mode. And after receiving the data, the standby control panel establishes a standby control plane, adds MAC1 and MAC2 data to the standby control plane, and transmits the data to hardware. After the data of the MAC1 and the MAC2 are processed, the main control board processes the MAC3 and the MAC4 again, adds the data to the main control board, sends the data to hardware, and informs the standby control board of adding the MAC3 and the MAC4 in a multicast mode. And after receiving the data, the standby control panel adds the MAC3 and MAC4 data to the standby control panel and sends the data down to hardware. In this step, because only the standby control board subscribes the MAC address table entry event to the main control board, the main control board only multicasts and notifies the standby control board after processing the event, and if other stacking devices also subscribe the MAC address table entry event, the main control board multicasts and notifies all the stacking devices subscribing the event to perform synchronous processing after processing the event.
Through the steps, the consistency of the main hardware MAC and the standby hardware MAC, the consistency of the main software MAC and the standby software MAC, and the consistency of hardware and software data can be ensured, and the MAC synchronization process is completed. And the single control surface is controlled and issued in a unified way to ensure the reliability of MAC synchronization, and MAC processing is carried out on the main control board and the standby control board in a unified way through the sequence of the MAC events (including local reporting and standby control board reporting) received by the main control board, so that the synchronous time sequence of the MAC address tables is ensured, and the problem of abnormal time sequence in the prior art is solved.
As shown in fig. 6, when the MAC address table entry event to be processed is an aging event, the specific MAC address synchronization process of the main control board and the standby control board includes:
step 201: the main control board and the standby control board respectively receive the MAC address table entry event to be aged from hardware. Note that this step is premised on completion of synchronization (dynamic addition) of the MAC1, MAC2 generated by the main control board and the MAC3, MAC4 generated by the backup control board. Therefore, after a period of time is added, the MAC with no flow rate reports an aging event. We take MAC1 and MAC3 as examples (the remaining MACs will be treated similarly before traffic is disconnected and control is deleted): the flow of the MAC1 on the main control board and the MAC3 on the standby control board is maintained, because the main control board has synchronously added the MAC3 and the standby control board has synchronously added the MAC1, but the hardware of each has no MAC flow, the main control board receives the aging event of the MAC3 from the hardware and the standby control board receives the aging event of the MAC1 from the hardware after a period of time.
Step 202: the standby control board unicasts and reports the received MAC address table entry event (MAC1) data to the main control board, so that the main control board performs unified control processing according to the sequence of the received events. The MAC address table entry event data includes, but is 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 position information of the MAC address table entry event to be aged is consistent with the position information of the corresponding MAC address table entry event stored in the control plane of the main control board, and processes the MAC address table entry event respectively according to the consistency.
Step 204: if the master control board judges that the position information of the MAC address table entry event to be aged is inconsistent with the position information of the corresponding MAC address table entry event stored in the control board of the master control board, the master control board informs the control board reporting the MAC address table entry event to be aged to re-add the MAC address table entry event to be aged according to the control board data of the master control board so as to reset the aging information.
Specifically, it is assumed that the master control board receives and processes the aging report of the internal MAC3 first, and then receives the aging report of the slave control board about the MAC 1. The main control board finds the MAC3 at the control plane and compares the location information of the aged MAC3 data with that of the local control board, but the location information of the MAC3 stored at the control plane is the standby control board, and if the two are not consistent, it is determined that the flow of the MAC3 is not disconnected and the aged data is not deleted, so that the control plane data does not need to be modified, and the main control board needs to internally notify the local control board reporting the aged event to re-add the MAC3 according to the control plane data to reset the aged data. The main control board processes the aging event of the MAC1 reported by the standby control board again, and similarly to the above, the main control board finds the MAC1 at the control board and compares the aging event position information (standby control board) of the MAC1 with the position information (main control board) stored locally, so that aging deletion is not needed, control board data is not needed to be modified, the main control board notifies the standby control board reporting the aging event to add the MAC1 again in a unicast manner, and the standby control board receives the command of the main control board and adds the MAC1 again to reset the aging information.
Step 205: if the main control board judges that the position information of the MAC address table entry event to be aged is consistent with the position information of the corresponding MAC address table entry event stored in the control board of the main control board, the main control board deletes the data of the MAC address table entry event to be aged on the control board of the main control board and sends hardware for synchronous deletion processing, and then the standby control board is notified by multicast to synchronously delete the data of the MAC address table entry event to be aged.
Specifically, when the aging event generated after the traffic disconnection is that MAC aging deletion is really needed, taking MAC2 and MAC4 as examples: the traffic of the main control board MAC2 and the traffic of the standby control board MAC4 are disconnected, and thus the main control board receives the aging event of MAC2 from the hardware and the standby control board receives the aging event of MAC4 from the hardware. The standby control board unicasts and reports the aging event data of the MAC4 to the main control board, and the aging event data is sent to the main control board for logic judgment control processing. Wherein the MAC address table entry event data includes, but is not limited to, the following information: event type (aging), MAC address, VLAN ID, location information (slot number). And assuming that the internal report of the aging event of the main control panel MAC2 is prior to the receiving of the aging event of the standby control panel MAC4, the MAC2 is processed in advance. The main control board finds the MAC2 on the control surface, compares the position information of the MAC2 aging event with the position information stored in the control surface, and both the position information and the position information are the main control board, and judges that the MAC2 flow is cut off and needs to be deleted, so that the main control board deletes the data of the MAC2 on the main control surface, issues the hardware deleted MAC2, then informs the standby control board to delete the MAC2 in a multicast mode, and after receiving the data, the standby control board deletes the MAC2 data on the standby control surface, and issues the hardware deleted MAC 2. Then, the main control board processes the MAC4 again, the main control board finds the MAC4 at the control surface and compares the position information of the MAC4 aging event with the position information stored in the control surface, the MAC4 aging event is the standby control board, the standby control board judges that the MAC4 flow is cut off and needs to be deleted, the main control board deletes the data of the MAC4 at the main control surface and issues a hardware deletion MAC4, then the standby control board is notified to delete the MAC4 in a multicast mode, and after the standby control board receives the data, the MAC4 data is deleted at the standby control surface and the hardware deletion MAC4 is issued. In this step, because only the standby control board subscribes the MAC address table entry event to the main control board, the main control board only multicasts and notifies the standby control board after processing the event, and if other stacking devices also subscribe the MAC address table entry event, the main control board multicasts and notifies all the stacking devices subscribing the event to perform synchronous processing after processing the event.
Through the steps, the consistency of the main hardware MAC and the standby hardware MAC, the consistency of the main software MAC and the standby software MAC, and the consistency of hardware and software data can be ensured, and the MAC synchronization process is completed. The aging setting ensures that the MAC aging is strictly controlled by the main control panel, the MAC with no flow of the board reports the aging event at regular time and is sent to the main control panel to make a correct action, the MAC aging is ensured to be normally carried out, and the problem that the MAC address can not be aged in the prior art is solved. In addition, the flow of MAC aging deletion is controlled by a single control plane of the main control board, and MAC processing is uniformly carried out on the main control board and the standby control board according to the sequence (including local reporting and standby control board reporting) of the MAC aging events received by the main control board, so that the synchronous time sequence of the MAC address tables is ensured.
Example 3:
this embodiment 3 provides a method for synchronizing MAC addresses of an OLT device, which further includes a process of expanding a newly added stacking device on the basis of embodiment 1 or embodiment 2.
As shown in fig. 7, the process of expanding the newly added stacking device specifically includes:
step 301: the newly added stacking equipment is inserted into the subrack. In this embodiment, the newly added stacking apparatus is a newly added uplink board.
Step 302: and after the newly added stacking equipment is on line, notifying the information of the equipment to all stacking equipment in the stacking system in a broadcasting mode. The device information includes, but is not limited to, the following information: location information (such as slot port), uplink port information (such as logical port number and physical port number), and communication address (such as IP address and MAC address).
Step 303: and after receiving the information, the main control board of the stacking system allocates a stacking system ID for the newly added stacking equipment and sends the newly allocated stacking system ID and the main control board information to the newly added stacking equipment in a unicast mode. The main control panel information includes, but is not limited to, the following information: communication addresses (e.g., IP addresses, MAC addresses).
Step 304: the newly-added stacking equipment records the communication address of the main control board, records the stacking system ID of the equipment and registers and subscribes MAC address table entry events to the main control board.
Step 305: after receiving the registered and subscribed MAC address table event message, the main control board synchronizes the MAC address table of the newly added stacking equipment for the first time. So that the newly added stack device synchronizes the MAC address learned by the main control board.
Step 306: and the newly-added stacking equipment sends the MAC address table entry event to be processed to the main control board, receives the newly-added event or the aging event of the main control board and enters a normal newly-added or aging process. Specifically, a newly-added stack device forwarding plane reports MAC address table item events to a control plane of a main control panel in batch; after the control plane of the main control panel processes and multicasts, the newly added stack device forwarding plane receives the subscribed MAC address table entry event, and then adds or deletes the MAC address table entry of the forwarding plane.
Through the process of the embodiment, the invention can flexibly expand the uplink port of the system without destroying the MAC address table synchronous interaction process of the existing equipment, realizes the purpose of newly adding stacked equipment, achieves the beneficial effect of improving the system bandwidth, enables the system to have longer life cycle and reduces the investment cost of operators.
Example 4:
on the basis of the MAC address synchronization method of the OLT apparatus provided in embodiments 1 to 3, the present invention further provides a MAC address synchronization apparatus of the OLT apparatus, which can be used to implement the method described above, as shown in fig. 8, which is a schematic diagram of an apparatus architecture in an embodiment of the present invention. The MAC address synchronization apparatus of the OLT device of the present embodiment includes one or more processors 21 and a memory 22. In fig. 8, one processor 21 is taken as an example.
The processor 21 and the memory 22 may be connected by a bus or other means, and fig. 8 illustrates the connection by a bus as an example.
The memory 22, which is a non-volatile computer-readable storage medium, may be used to store non-volatile software programs, non-volatile computer-executable programs, and modules, such as the MAC address synchronization method of the OLT apparatus in embodiments 1 to 3. The processor 21 executes various functional applications and data processing of the MAC address synchronization apparatus of the OLT device by running the nonvolatile software program, instructions, and modules stored in the memory 22, that is, implements the MAC address synchronization method of the OLT device of embodiments 1 to 3.
The memory 22 may include high speed random access memory and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some embodiments, the memory 22 may optionally include memory located remotely from the processor 21, and these remote memories may be connected to the processor 21 via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
Program instructions/modules are stored in the memory 22, and when executed by the one or more processors 21, perform the MAC address synchronization method of the OLT apparatus in embodiments 1 to 3 described above, for example, perform the respective steps shown in fig. 1 to 7 described above.
Those of ordinary skill in the art will appreciate that all or part of the steps of the various methods of the embodiments may be implemented by associated hardware as instructed by a program, which may be stored on a computer-readable storage medium, which may include: a Read Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and the like.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. A MAC address synchronization method of OLT equipment is characterized by comprising the following steps:
the stacking system completes the master-slave election of the control panel and notifies the information of the master control panel to all stacking equipment in the stacking system in a multicast mode;
the stacking equipment registers and subscribes an MAC address table entry event to the main control board; the information of the MAC address table entry event comprises: the method comprises the steps of event type, MAC address, VLAN ID, position information and MAC address type, wherein the event type comprises a new event and an aging event;
the stacking equipment forwarding plane reports the MAC address table entry events to be processed to the control plane of the main control panel in batch;
the control surface of the main control panel processes the local MAC address table item of the MAC address table item event to be processed according to the time sequence, and multicasts and sends the MAC address table item event to all the stacking equipment subscribed with the corresponding event;
and the stacking equipment processes the local MAC address table entry after receiving the MAC address table entry event.
2. The MAC address synchronization method of the OLT apparatus according to claim 1, wherein when the MAC address table entry event to be processed is a new event, the control plane of the main control board performs local MAC address table entry processing on the MAC address table entry event to be processed according to a time sequence, and multicast-sends the MAC address table entry event to all stacking apparatuses subscribed to the corresponding event specifically includes:
the control surface of the main control panel searches a corresponding local MAC address table entry according to the MAC address and VLAN ID combined key value in the MAC address table entry event to be processed;
if the MAC address table item is found, updating a local MAC address table item, and multicasting and sending the MAC address table item event to the subscribed stacking equipment; if the MAC address table item event is not searched, adding the MAC address table item event into a local MAC address table item, and multicasting and sending the MAC address table item event to the subscribed stacking equipment.
3. The MAC address synchronization method of the OLT apparatus according to claim 1, wherein when the MAC address table entry event to be processed is an aging event, the control plane of the main control board performs local MAC address table entry processing on the MAC address table entry event to be processed according to a time sequence, and multicast-sends the MAC address table entry event to all stacking apparatuses subscribed to the corresponding event specifically includes:
the control surface of the main control panel searches a corresponding local MAC address table entry according to the MAC address and VLAN ID combined key value in the MAC address table entry event to be processed;
if the two pieces of position information are found to be consistent, deleting the corresponding local MAC address table item, and multicasting and sending the MAC address table item event to the subscribed stacking equipment; if the MAC address table entry event is found out, but the position information of the MAC address table entry event and the position information of the local MAC address table entry are inconsistent, the MAC address table entry event is updated to the local MAC address table entry, and the MAC address table entry event is sent to the stacking equipment with the corresponding position information in a unicast mode; if not, the instruction is not executed.
4. The MAC address synchronization method of the OLT apparatus of claim 1, wherein the stacking apparatus specifically comprises a control board and at least one upstream board, wherein the control board comprises a main control board and a standby control board.
5. The MAC address synchronization method of the OLT apparatus according to claim 4, wherein when the stacking apparatus that registers the subscription MAC address table entry event with the main control board is another stacking apparatus except the main control board and the MAC address table entry event to be processed is a newly added event, the method specifically includes:
the main control board and other stacking devices respectively receive an MAC address table entry event to be newly added from own hardware;
other stacking equipment unicast and report the received MAC address table entry event data to the main control board so as to enable the main control board to uniformly control and process;
the main control board firstly processes the MAC address table entry event received firstly according to the sequence of the received events and issues hardware synchronous processing, and then multicast and inform other stacking equipment to synchronously process the MAC address table entry event processed firstly; the main control board post-processes the post-received MAC address table item event and issues hardware synchronous processing, and then multicast to inform other stacking equipment to synchronously process the post-processed MAC address table item event.
6. The MAC address synchronization method of the OLT apparatus according to claim 4, wherein when the stacking apparatus that registers the subscription MAC address table entry event with the main control board is another stacking apparatus except the main control board and the MAC address table entry event to be processed is an aging event, the method specifically includes:
the main control board and other stacking equipment respectively receive MAC address table entry events to be aged from hardware;
other stacking equipment unicast and report the received MAC address table entry event data to the main control board, so that the main control board performs unified control processing according to the sequence of the received events;
the main control board judges whether the position information of the MAC address table entry event to be aged is consistent with the position information of the corresponding MAC address table entry event stored in the control plane of the main control board, and processes the MAC address table entry event respectively according to the consistency.
7. The MAC address synchronization method of the OLT apparatus of claim 6, wherein:
if the master control board judges that the position information of the MAC address table entry event to be aged is inconsistent with the position information of the corresponding MAC address table entry event stored in the control plane of the master control board, the master control board informs the stacking equipment reporting the MAC address table entry event to be aged to re-add the MAC address table entry event to be aged according to the control plane data of the master control board so as to reset the aging information;
if the main control board judges that the position information of the MAC address table entry event to be aged is consistent with the position information of the corresponding MAC address table entry event stored in the control board of the main control board, the main control board deletes the data of the MAC address table entry event to be aged on the control board of the main control board and sends hardware for synchronous deletion processing, and then multicast notifies other stacking equipment to synchronously delete the data of the MAC address table entry event to be aged.
8. The MAC address synchronization method of the OLT apparatus according to claim 1, further comprising an extended newly added stacking apparatus, wherein the extended newly added stacking apparatus specifically comprises:
after newly-added stacking equipment is on line, notifying the equipment information to all stacking equipment in a stacking system in a broadcasting mode, wherein the equipment information comprises position information, uplink port information and a communication address;
after receiving the information, the main control board of the stacking system allocates a stacking system ID for the newly added stacking equipment and sends the newly allocated stacking system ID and the main control board information to the newly added stacking equipment in a unicast mode, wherein the main control board information comprises a communication address;
newly-added stacking equipment records a communication address of a main control board, records a stacking system ID of the equipment, and registers and subscribes an MAC address table entry event to the main control board;
after receiving the registered and subscribed MAC address table entry event message, the main control board synchronizes the MAC address table entries of the newly added stacking equipment for the first time;
and the newly-added stacking equipment sends the MAC address table entry event to be processed to the main control board, receives the newly-added event or the aging event of the main control board and enters a normal newly-added or aging process.
9. A MAC address synchronizer of OLT equipment is characterized in that:
comprising at least one processor and a memory, said at least one processor and memory being connected via a data bus, said memory storing instructions executable by said at least one processor, said instructions, after being executed by said processor, being adapted to perform the method for MAC address synchronization of an OLT apparatus according to any of claims 1-8.
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| CN202110727948.7A CN113242481B (en) | 2021-06-29 | 2021-06-29 | MAC address synchronization method and device of OLT equipment |
| PCT/CN2022/098566 WO2023273864A1 (en) | 2021-06-29 | 2022-06-14 | Mac address synchronization method and apparatus for olt device |
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| CN113839875B (en) * | 2021-10-26 | 2022-12-23 | 浪潮思科网络科技有限公司 | Method, device, equipment and medium for synchronizing MAC (media Access control) addresses in stacking system |
| CN114884878A (en) * | 2022-07-12 | 2022-08-09 | 常州楠菲微电子有限公司 | MAC address synchronization method for multi-switch chip stacking in hardware learning mode |
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| CN104219122A (en) * | 2014-08-26 | 2014-12-17 | 烽火通信科技股份有限公司 | Detection method for quickly positioning far-end ONU (optical network unit) loop ports by OLT (optical line terminal) local sides |
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| KR100563657B1 (en) * | 2003-10-21 | 2006-03-23 | 한국전자통신연구원 | Shared LAN Emulation Method and Device with WLAN Recognition and LED Management in Ethernet Passive Optical Subscriber Network |
| US7873039B2 (en) * | 2006-06-29 | 2011-01-18 | Broadlight Ltd. | Enhanced optical line terminal controller |
| CN102045200A (en) * | 2010-12-24 | 2011-05-04 | 武汉烽火网络有限责任公司 | Conditional synchronization method for MAC address table entry of distributed switch |
| CN103929461B (en) * | 2013-08-12 | 2018-03-20 | 新华三技术有限公司 | Mac address information synchronous method and device in pile system |
| CN103414773B (en) * | 2013-08-12 | 2017-02-15 | 杭州华三通信技术有限公司 | Stacking system MAC address information synchronizing method and device |
| US9319317B1 (en) * | 2014-01-31 | 2016-04-19 | Adtran, Inc. | Systems and methods for disseminating addresses in distributed switching environments |
| CN108023974B (en) * | 2017-11-30 | 2021-01-26 | 新华三技术有限公司 | Address aging method and device |
| CN109067673B (en) * | 2018-08-10 | 2021-03-30 | 盛科网络（苏州）有限公司 | Method and system for learning MAC address in stacking system |
| CN109194777B (en) * | 2018-09-10 | 2021-08-31 | 苏州盛科通信股份有限公司 | Method and device for aging MAC address in stacking system |
| CN110636393B (en) * | 2019-09-10 | 2021-11-16 | 烽火通信科技股份有限公司 | Double-master-control 1+1 concurrent working method and system of OLT equipment |
| CN111107182B (en) * | 2019-12-31 | 2022-09-20 | 瑞斯康达科技发展股份有限公司 | MAC address synchronization method, device, system, equipment and medium |
| CN113242481B (en) * | 2021-06-29 | 2022-04-19 | 烽火通信科技股份有限公司 | MAC address synchronization method and device of OLT equipment |
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| CN104219122A (en) * | 2014-08-26 | 2014-12-17 | 烽火通信科技股份有限公司 | Detection method for quickly positioning far-end ONU (optical network unit) loop ports by OLT (optical line terminal) local sides |
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