CN100428722C - Distributed processing system and processing method for multi-generating tree protocol - Google Patents
Distributed processing system and processing method for multi-generating tree protocol Download PDFInfo
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Abstract
The invention relates to a multiple spanning tree protocol distributed processing system, comprising master control plate and interface plate, where the master control plate comprises multiple spanning tree calculating module and interface management module; and the interface plate comprises interface management module and multiple spanning tree adaptation module. And it also relates to a multiple spanning tree protocol distributed processing method, comprising: multiple spanning tree calculating module of the main control plate calculates interface statuses of the interface plate and sends status setting information to the interface plate; the interface plate sets interface statuses according to the status setting information and returns the setting results to the master control plate. And the calculation is simple, reducing processing burden on the interface plate and able to effectively reduce the master-slave communication bandwidth occupied control plane; and it senses link status variation of the whole equipment by using a mechanism that register call-back function informs of events, implementing external event processing in high efficiency; and it is simple to switch main and backup plates, and in the switching course, the flow of the system can be interrupted because of MSTP calculation.
Description
Technical field
The present invention relates to route technology, relate in particular to the distributed processing system(DPS) and the processing method of the Multiple Spanning Tree Protocol of router device.
Background technology
Along with the continuous expansion of the market demand, the application of router in network more and more widely, two layers of application produce thereupon.For fear of two layers broadcast storm, need on router, realize Multiple Spanning Tree Protocol MSTP (Multiple Spanning Tree Protocol is called for short MSTP).
MSTP prunes loop network becomes an acyclic tree network, avoid hyperplasia and the Infinite Cyclic of message in loop network, a plurality of redundant paths of data forwarding also are provided simultaneously, in data forwarding process, realize the load balancing of VLAN (Virtual Local Area Network, VLAN) data.The MSTP technology that has now is based on many examples, and each example can shine upon a plurality of VLAN, and will calculate its state respectively at each interface.It has continued to use the Spanning-Tree Protocol state machine computational methods of (Spanning TreeProtocol is called for short STP), coordinate to carry out work, concrete realization complexity extremely by a plurality of state machines.
STP is mainly used on the switch device of single interface board when rising, and promptly has only a processor on an equipment, and relevant treatment also all is to adopt centralized system to carry out like this.And the distributed frame router of a large amount of many interface boards appearred now, and be furnished with processor on each interface board, business interface is existing on master control borad, also has on interface board.MSTP itself also is an extremely complicated agreement, realize a plurality of state machine collaborative works, also has numerous timers constantly to move.On such hardware architecture, if centralized MSTP implementation is directly applied to distribution router, architecture as shown in Figure 1 will occur: master control borad and interface board communicate by the master-slave communication bus, MSTP computing module and interface management module are all arranged on master control borad and the interface board, under this architecture, for the state of the correct interface of calculating of energy, need continuous Fabric Interface information between each interface board.
Adopt traditional centralized MSTP computational methods, the computing of running status machine respectively though can realize working alone of interface board, has increased the burden of interface board processor greatly on master control borad and interface board; In order to unifiedly calculate the state of MSTP state machine, frequent interactive information between master control borad and interface board and the interface board, pose a big pressure to master-slave communication like this, and be easy to mistake in computation, cause catastrophic consequence; The calculation of complex of MSTP own, and mutual too many between the processor of each operation MSTP, so the probability that goes wrong when masterslave switchover also can increase greatly.
Summary of the invention
The objective of the invention is at the existing in prior technology defective, a kind of distributed processing system(DPS) and processing method of Multiple Spanning Tree Protocol is provided, the calculating of interface board Interface status is simple; Reduce the burden that interface board is handled, alleviate the bandwidth that the control plane of master-slave communication takies.
To achieve these goals, the invention provides a kind of distributed processing system(DPS) of Multiple Spanning Tree Protocol, comprise master control borad and interface board, master control borad and interface board are equipped with remote procedure call (RemoteProcedure Calls, be called for short RPC) communication module, and carry out master-slave communication by the RPC communication module, this master control borad comprises the multiple spanning tree computing module, be connected with the RPC communication module of master control borad, be used to calculate Interface status; And the interface management module, be connected with the RPC communication module and the multiple spanning tree computing module of master control borad, be used to write down the Interface status of each interface board; Interface board comprises the interface management module, is connected with the RPC communication module of interface board, is used to write down the Interface status of place interface board; The multiple spanning tree adaptation module is connected with the RPC communication module and the interface management module of interface board, is used to be provided with Interface status.
Master control borad also can comprise the interface mappings module, is connected with the RPC communication module and the multiple spanning tree computing module of described master control borad, is used to carry out the mutual mapping of virtual interface and interface board interface; Also can comprise an event manager module, be connected, be used for management of external events, notice multiple spanning tree computing module after collecting the incident relevant with the multiple spanning tree computing module with the RPC communication module and the multiple spanning tree computing module of described master control borad; Also can comprise Configuration Manager, be connected, be used to check interface configuration, and the configuration of butt joint oralia is controlled with RPC communication module, event manager module and the multiple spanning tree computing module of described master control borad.
Interface board also can comprise the product adaptation module, and the RPC communication module by interface board and master control borad is connected with the multiple spanning tree computing module of master control borad, is used to the multiple spanning tree computing module of main interface plate to transmit bridge protocol data unit message.
This system also relates to slave control board, and the structure of this slave control board is identical with the structure of master control borad.
To achieve these goals, the present invention also provides a kind of distributed approach of Multiple Spanning Tree Protocol, and this method comprises:
The multiple spanning tree computing module of steps A 1, master control borad calculates the Interface status of interface board;
Steps A 2, this multiple spanning tree computing module are provided with message to the interface board transmit status;
Steps A 3, interface board are provided with message according to state, carry out the Interface status setting.
The interface mappings module is a virtual interface with the interface board interface mappings, and the multiple spanning tree computing module of master control borad calculates the spanning-tree state of virtual interface; If result of calculation need be carried out the physical layer interface setting, then each virtual interface is mapped as the interface board interface, and message is set to interface board interface transmit status.
The multiple spanning tree computing module is at event manager module registered callbacks function, after event manager module is received the incident relevant with the multiple spanning tree computing module, by call back function notice multiple spanning tree computing module, call back function is with in the formation of incident writing events, by the multiple spanning tree computing module to incident unification handle, the MSTP computing module does not spend the bottom monitor external events, has realized the efficient processing to external event.
This method also comprises: handle the step of bridge protocol data unit (Bridge Protocol Data Unit is called for short BPDU) message, specifically comprise:
After step B1, interface board were received the BPDU message, the product adaptation module of interface board was sent to this BPDU message the multiple spanning tree computing module of master control borad;
The information that the multiple spanning tree computing module of step B2, master control borad carries according to this BPDU message and the information calculations spanning-tree state of storage inside;
Step B3, multiple spanning tree computing module generate the BPDU message that needs send according to result of calculation, interface number are appended to the product adaptation module that is sent to interface board on the BPDU message that needs to send, and carry out concrete transmission by the product adaptation module.
This method also relates to the process that main control board and slave control board are switched, and is specially:
Step C1, before switching, slave control board is carried out the configuration identical with main control board;
Step C2, when enabling masterslave switchover, start the multiple spanning tree calculation task on the slave control board, calculate spanning-tree state according to the message of the configuration that has had and other equipment of receiving.
In active and standby plate reversed process, only generating tree according to each configuration parameter and the BPDU message received calculates, do not go in the computational process physical layer interface state is provided with, therefore the flow of entire equipment can not interrupt because of MSTP calculates, this simple masterslave switchover implementation, can walk around the flow process of a lot of complexity, the probability that goes wrong also can reduce greatly.
The present invention only carries out MSTP at master control borad and calculates, issue the state of interface on the interface board then by communication module, make the calculating of interface board Interface status simple, reduced the burden that interface board is handled, can effectively alleviate the bandwidth that the control plane of master-slave communication takies; By using the link-state change of registered callbacks function circular case mechanism perception entire equipment, trigger the MSTP computing module computing on the master control borad then, thereby the MSTP computing module does not spend the bottom monitor external events, realized efficient processing, and the division of module is clear to external event; Do not carry out the change of physical layer interface state during the masterslave switchover, after slave control board becomes main control board, carry out seamlessly transitting of state machine according to one or two message receiving, the flow of entire equipment can not interrupt because of MSTP calculates like this, has realized complicated function with simple mode.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Description of drawings
Fig. 1 is a distributed processing system(DPS) structural representation of the prior art;
Fig. 2 is the distributed processing system(DPS) structural representation of Multiple Spanning Tree Protocol of the present invention;
Fig. 3 is the distributed approach flow chart of Multiple Spanning Tree Protocol of the present invention;
Fig. 4 is master control borad one a specific embodiment structural representation of the present invention;
Fig. 5 is the distributed approach one specific embodiment flow chart of Multiple Spanning Tree Protocol of the present invention;
Fig. 6 is the method flow diagram that message of the present invention is handled;
Fig. 7 is the distributed processing system(DPS) one specific embodiment structural representation of Multiple Spanning Tree Protocol of the present invention;
Fig. 8 is another specific embodiment structural representation of distributed processing system(DPS) of Multiple Spanning Tree Protocol of the present invention;
Fig. 9 is an active and standby plate reverse treatment method flow chart of the present invention.
Embodiment
The distributed processing system(DPS) of Multiple Spanning Tree Protocol of the present invention is only carried out the calculating of multiple spanning tree state on master control borad, and Interface status is issued to interface board by communication module, each interface board need not carry out the calculating of Interface status, thereby can significantly reduce the burden of interface board processor, and can avoid between master control borad and interface board and the interface board in order to unifiedly calculate the frequent information interaction of MSTP state.
As shown in Figure 2, the distributed processing system(DPS) structural representation for Multiple Spanning Tree Protocol of the present invention comprises: master control borad 1 and at least one interface board 2.Master control borad 1 is provided with RPC communication module 11, MSTP computing module 12 and interface management module 13.MSTP computing module 12 and interface management module 13 all are connected with RPC communication module 11, and interface management module 13 is connected with MSTP computing module 12.MSTP computing module 12 is used to calculate the Interface status of interface board; Interface management module 13 is used to write down the Interface status of each interface board.Interface board 2 is provided with RPC communication module 21, MSTP adaptation module 22 and interface management module 23.MSTP adaptation module 22 and interface management module 23 all are connected with RPC communication module 21, and MSTP adaptation module 22 is connected with interface management module 23.Interface management module 23 is used to write down the Interface status of place interface board, and MSTP adaptation module 22 is used for being provided with according to the MSTP result of calculation of master control borad 1 Interface status of interface board.Master control borad 1 and interface board 2 carry out master-slave communication by RPC communication module 11 and 21.
Under this distributed situation, at the Interface status of butt joint oralia 2 when managing, calculate the state of each interface and notify each interface board 2 by the MSTP computing module 12 of master control borad 1.As shown in Figure 3, the process flow figure for Multiple Spanning Tree Protocol of the present invention comprises:
The MSTP computing module of steps A 1, master control borad calculates the Interface status of interface board;
Steps A 2, the state that will carry the Interface status of interface board are provided with message and are sent to interface board, and the notification interface plate carries out the Interface status setting;
Steps A 3, interface board are provided with message according to state, carry out the Interface status setting.
For the ease of of the control of master control borad MSTP computing module to each interface, grasp the Interface status of each interface board at any time, in steps A 3, interface board carries out can will the MSTP computing module that the result returns master control borad being set after state is provided with.
Before execution in step A1 calculates Interface status, can earlier the interface on the interface board all be mapped as the virtual interface on the master control borad, at this moment, MSTP computing module on the master control borad can all be used as interface on this plate to these interface board interfaces, no matter be the calculating of docking port state, still to the setting of result of calculation, all these virtual interfaces of direct control needn't go to be concerned about these virtual interfaces are specifically on which plate; Therefore need to add an interface mappings module, be used to realize the conversion of virtual interface interface to the interface board.
As shown in Figure 4, for master control borad one specific embodiment structural representation, in the present embodiment, added interface mappings module 14, this module is connected with RPC communication module 11 and MSTP computing module 12, is used to carry out the conversion of virtual interface and interface board interface.Interface mappings module 14 is a virtual interface with the interface board interface mappings, and is sent to MSTP computing module 12; After MSTP computing module 12 is finished the state computation of virtual interface, Interface status is returned interface mappings module 14, virtual interface is translated into which interface on which card of corresponding interface board by this module.
As shown in Figure 5, the distributed approach one specific embodiment flow chart for Multiple Spanning Tree Protocol of the present invention comprises:
Spanning-tree state comprises: transmit (forwarding), abandon (discarding) or study (learning).
Step 102, MSTP computing module are transmitted to the interface mappings module to these Interface status, virtual interface are translated into which interface on which card of corresponding interface board by the interface mappings module, to the transmission of the RPC communication module on master control borad message.
RPC communication module on step 103, the master control borad encapsulates the message of receiving, sends on the corresponding interface plate by the RPC communication module and handles.
After RPC communication module on step 104, the interface board is received this message, after heading removed, find relevant type of message, discovery is that MSTP is used for being provided with Interface status, and then message is transferred to the MSTP adaptation module handle.
The RPC communication module of step 106, interface board will be provided with the result and turn back to master control borad MSTP computing module.
Adopt the mode of this virtual interface, the calculating of the interface of butt joint on the oralia need not be distributed to each interface board and get on and carry out separately, so just do not need operation MSTP calculating on each interface board respectively, can reduce the burden of interface board greatly, and can effectively avoid between master control borad and interface board and the interface board to unifiedly calculating the frequent information interaction that the MSTP state carries out.
In system's running, the MSTP computing module need be handled external event, therefore in master control borad one specific embodiment, also comprises event manager module, and this module is used for management of external events.The MSTP computing module is at event manager module registered callbacks function, and event manager module is collected the incident relevant with MSTP, directly notifies MSTP computing module, goes to monitor each incident to bottom specially again without the MSTP computing module.Incident for the event manager module announcement, in the call back function of MSTP computing module, handle, this processing is just write each incident in the event queue of MSTP and is gone, handle by the unification of MSTP computing module then, reduce the processing burden of event manager module like this, helped the location of problem.Adopt the event manager module unification to carry out incident management, add the virtual interface way to manage, can well avoid the too big problem of transinformation content between interface board and master control borad.
For the MSTP computing module, the external event of acceptance mainly contains three classes: the keeper is provided with the MSTP parameter; Change from the adaptive BPDU of receiving message of product and Link State.The generation of these incidents all can influence MSTP and calculate.In master control borad, can utilize Configuration Manager, this module is connected with event manager module and multiple spanning tree computing module, and the user is configured control operation by this Configuration Manager.The user can pass through command line interface (Command Line Interface, be called for short CLI) and Simple Network Management Protocol (Simple Network Management Protocol, SNMP) be managed for configuration, owing to just when the user operates, just MSTP is exerted an influence, so the processing of this part is:, then on master control borad, change corresponding configuration on master control borad if order is only worked; Interface board just need not have been handled, if order relates to the configuration of interface board, then with Interface status be set carry out similar flow process.
In interface board, can add the product adaptation module, this module is connected with the MSTP computing module of master control borad by the RPC module of interface board and master control borad, is used to the MSTP computing module to transmit the BPDU message.Each system transmits information by message, and after interface board received the BPDU message of other system transmission, the MSTP computing module that is transmitted to master control borad by the product adaptation module was handled; The MSTP computing module also be sent to the product adaptation module, and this product adaptation module is sent to the corresponding target system again after generating the BPDU message that needs to send.As shown in Figure 6, be the message process chart, comprise:
After step B1, interface board were received the BPDU message of other system transmission, the product adaptation module of interface board was sent to this BPDU message the MSTP computing module of master control borad;
The information that the MSTP computing module of step B2, master control borad carries according to this BPDU message and the information calculations spanning-tree state of storage inside;
The state that the MSTP computing module of step B3, master control borad will carry the Interface status of interface board is provided with message and is sent to interface board;
Step B4, MSTP computing module generate the BPDU message that needs send according to result of calculation, interface number is appended to the product adaptation module that is sent to interface board on this BPDU message, and, the BPDU message is sent to the corresponding target system by the concrete transmission of product adaptation module execution.As shown in Figure 7, be the distributed processing system(DPS) one specific embodiment structural representation of Multiple Spanning Tree Protocol, master control borad 1 comprises RPC communication module 11, MSTP computing module 12, interface management module 13, interface mappings module 14, event manager module 15 and Configuration Manager 16; RPC communication module 11 is connected with MSTP computing module 12; Interface management module 13, interface mappings module 14, event manager module 15 and Configuration Manager 16 all are connected with RPC communication module 11 and MSTP computing module 12; Event manager module 15 is connected with Configuration Manager 16.Interface board 2 comprises RPC communication module 21, MSTP adaptation module 22, interface management module 23 and product adaptation module 24, MSTP adaptation module 22, interface management module 23 and product adaptation module 24 all are connected with RPC communication module 21, and MSTP adaptation module 22 also is connected with interface management module 23 and product adaptation module 24.
In order to guarantee the reliability of system, slave control board will be set in system, as shown in Figure 8, another specific embodiment structural representation of distributed processing system(DPS) for Multiple Spanning Tree Protocol, this system relates to two master control borads, be main control board 1a and slave control board 1b, comprise that also 2, two interface boards 2 of two interface boards communicate by letter with slave control board 1b with main control board 1a by the master-slave communication mode.Under normal circumstances, main control board 1a work; When main control board 1a breaks down, carry out active and standby plate and switch, slave control board 1b replaces main control board 1a work.Owing to the structure of master control borad and interface board is had been described in detail in front, repeats no more herein.Active and standby plate reverse treatment method when below master control borad being broken down describes.
In system's running, the MSTP computing module of master control borad is calculating spanning-tree state always, but in many cases, result of calculation is identical, and the state of interface does not change, and does not therefore need to reset Interface status.Thereby after obtaining result of calculation, the MSTP computing module can judge whether the Interface status that calculates changes, and only when whether Interface status changes, the state that just will comprise Interface status is provided with message and is sent to interface board.
It is the part of router feature that MSTP calculates, and when masterslave switchover, can not cause customer traffic disruption of a specified duration excessively because the computing time of MSTP is long, as shown in Figure 9, is active and standby plate reverse treatment method flow chart, comprising:
Step C1, before switching, on slave control board, carry out the setting identical with main control board;
When being provided with, carry out the transition to slave control board; Adopt batch backup and smooth mode just the MSTP parameter of master control borad carry out the transition to slave control board and get on.
Step C2, when carrying out masterslave switchover, on slave control board, start the MSTP calculation task, slave control board calculates spanning-tree state according to the BPDU message of the configuration that has had and other equipment of receiving.
When masterslave switchover, directly allow the state machine on the slave control board calculate according to the state of preceding several messages of receiving to each interface, because on the message of receiving and the former main control board is the same, the configuration of parameter also is the same, so the result of calculation of docking port state also is the same, after slave control board becomes main control board like this, normal in service the going that enters the MSTP state machine that can be very fast.
Data flow is continual carries out in order to allow, MSTP during masterslave switchover not the physical layer interface state to equipment be provided with, and this simple masterslave switchover implementation can be walked around the flow process of a lot of complexity, the probability that goes wrong also can reduce greatly.
The present invention only carries out MSTP at master control borad and calculates, issue the state of interface on the interface board then by the RPC communication module, make the calculating of interface board Interface status simple, reduced the burden that interface board is handled, can effectively alleviate the bandwidth that the control plane of master-slave communication takies; Link-state change by registered callbacks function circular incident perception entire equipment, trigger the MSTP computing module computing on the master control borad then, thereby the MSTP computing module does not spend the bottom monitor external events, realized the efficient processing to external event, and the division of module is clear; Do not carry out the change of Interface status during the masterslave switchover, after slave control board becomes main control board, carry out seamlessly transitting of state machine according to one or two message receiving, the flow of entire equipment can not interrupt because of MSTP calculates like this, has realized complicated function with simple mode.
Should be noted that at last: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; Although with reference to preferred embodiment the present invention is had been described in detail, those of ordinary skill in the field should be appreciated that still and can make amendment or the part technical characterictic is equal to replacement the specific embodiment of the present invention; And not breaking away from the spirit of technical solution of the present invention, it all should be encompassed in the middle of the technical scheme scope that the present invention asks for protection.
Claims (10)
1, a kind of distributed processing system(DPS) of Multiple Spanning Tree Protocol comprises master control borad and interface board, and master control borad and interface board are equipped with the RPC communication module, and carries out master-slave communication by the RPC communication module, it is characterized in that:
This master control borad comprises
The multiple spanning tree computing module is connected with the RPC communication module of master control borad, is used to calculate the Interface status of interface board;
The interface mappings module is connected with the RPC communication module and the multiple spanning tree computing module of described master control borad, is used to carry out the mutual mapping of the virtual interface and the interface board interface of master control borad; And
The interface management module is connected with the RPC communication module and the multiple spanning tree computing module of master control borad, is used to write down described Interface status, and provides needed various interface parameter in the computational process for described multiple spanning tree computing module;
Interface board comprises
The interface management module is connected with the RPC communication module of interface board, is used for the Interface status of record interface plate;
The multiple spanning tree adaptation module is connected with the RPC communication module of described interface board and the interface management module of described interface board, is used for being provided with according to the result of calculation of the multiple spanning tree computing module of described master control borad the Interface status of interface board.
2, the distributed processing system(DPS) of Multiple Spanning Tree Protocol according to claim 1, it is characterized in that, described master control borad also comprises event manager module, be connected with the RPC communication module and the multiple spanning tree computing module of described master control borad, be used for management of external events, notice multiple spanning tree computing module after collecting the incident relevant with the multiple spanning tree computing module.
3, the distributed processing system(DPS) of Multiple Spanning Tree Protocol according to claim 2, it is characterized in that, described master control borad also comprises Configuration Manager, be connected with RPC communication module, event manager module and the multiple spanning tree computing module of described master control borad, be used to check interface configuration, and the configuration of butt joint oralia is controlled.
4, the distributed processing system(DPS) of Multiple Spanning Tree Protocol according to claim 1, it is characterized in that, described interface board also comprises the product adaptation module, be connected with the multiple spanning tree state computation module of master control borad by RPC communication module described interface board and master control borad, be used to multiple spanning tree state computation module forwards bridge protocol data unit message.
5, a kind of distributed approach of Multiple Spanning Tree Protocol is characterized in that, this method comprises:
The multiple spanning tree computing module of steps A 1, master control borad calculates the Interface status of interface board;
Steps A 2, the state that will comprise Interface status are provided with message and are sent to interface board;
Steps A 3, interface board are provided with message according to state, carry out the Interface status setting; Also comprise before the described steps A 1: the interface mappings module is the virtual interface of master control borad with the interface board interface mappings, in the described steps A 1, the multiple spanning tree computing module of master control borad calculates the spanning-tree state of described virtual interface, the spanning-tree state of virtual interface is sent to the interface mappings module, and the interface mappings module is mapped as the interface board interface with each virtual interface.
6, the distributed approach of Multiple Spanning Tree Protocol according to claim 5, it is characterized in that, described master control borad also comprises event manager module, this method also comprises: described multiple spanning tree computing module is at event manager module registered callbacks function, described event manager module is by call back function notice multiple spanning tree computing module, call back function is in the formation of incident writing events, by the multiple spanning tree computing module to incident unification handle.
7, the distributed approach of Multiple Spanning Tree Protocol according to claim 5 is characterized in that, also comprises before described steps A 1:
After interface board was received bridge protocol data unit message, the product adaptation module of interface board was sent to this bridge protocol data unit message the multiple spanning tree computing module of master control borad;
The Interface status that the multiple spanning tree computing module of master control borad calculates interface board in the described steps A 1 is specially, the Interface status of the information that the multiple spanning tree computing module of master control borad carries according to bridge protocol data unit message and the information calculations interface board of storage inside;
Comprise also that after described steps A 3 the multiple spanning tree computing module generates the bridge protocol data unit message that needs send according to result of calculation, interface number is appended to the product adaptation module that is sent to interface board on this bridge protocol data unit message that need send, and carry out concrete the transmission by the product adaptation module.
According to the distributed approach of the arbitrary described Multiple Spanning Tree Protocol of claim 5-7, it is characterized in that 8, described steps A 2 is specially: when Interface status changed, the state that will comprise Interface status was provided with message and is sent to interface board.
According to the distributed approach of the arbitrary described Multiple Spanning Tree Protocol of claim 5-7, it is characterized in that 9, this method also comprises the step that main control board and slave control board are switched, and is specially:
Step C1, before switching, slave control board is carried out the configuration identical with main control board;
Step C2, enabling when switching, start the multiple spanning tree calculation task on slave control board, slave control board calculates spanning-tree state according to the message of configuration and other equipment of receiving.
According to the distributed approach of the arbitrary described Multiple Spanning Tree Protocol of claim 5-7, it is characterized in that 10, in the described steps A 3, interface board carries out after Interface status is provided with
The result will be set return master control borad.
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| CN1529459A (en) * | 2003-10-16 | 2004-09-15 | 港湾网络有限公司 | Main-standby rotation realizing method facing to high-side exchange board |
| CN1620068A (en) * | 2003-11-20 | 2005-05-25 | 韩国电子通信研究院 | Link integrating apparatus and method |
| CN1642135A (en) * | 2004-01-17 | 2005-07-20 | 华为技术有限公司 | GGSN/PDSN device and its data forwarding method |
| CN1783836A (en) * | 2004-11-30 | 2006-06-07 | Ut斯达康通讯有限公司 | Method and its device for forming tree algorithm by improving shortest path |
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2006
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1409217A (en) * | 2002-09-18 | 2003-04-09 | 北京航空航天大学 | Development method for based on object-oriented distributive interactive stimulation application program based on faced objective |
| CN1529459A (en) * | 2003-10-16 | 2004-09-15 | 港湾网络有限公司 | Main-standby rotation realizing method facing to high-side exchange board |
| CN1620068A (en) * | 2003-11-20 | 2005-05-25 | 韩国电子通信研究院 | Link integrating apparatus and method |
| CN1642135A (en) * | 2004-01-17 | 2005-07-20 | 华为技术有限公司 | GGSN/PDSN device and its data forwarding method |
| CN1783836A (en) * | 2004-11-30 | 2006-06-07 | Ut斯达康通讯有限公司 | Method and its device for forming tree algorithm by improving shortest path |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102231709A (en) * | 2011-07-04 | 2011-11-02 | 清华大学 | Control plane structure of virtual routing device and control method thereof |
| CN102231709B (en) * | 2011-07-04 | 2013-07-10 | 清华大学 | Control plane structure of virtual routing device and control method thereof |
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| CN1905508A (en) | 2007-01-31 |
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