CN102006184A - Management method, device and network device of stack link - Google Patents
Management method, device and network device of stack link Download PDFInfo
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- CN102006184A CN102006184A CN2010105447441A CN201010544744A CN102006184A CN 102006184 A CN102006184 A CN 102006184A CN 2010105447441 A CN2010105447441 A CN 2010105447441A CN 201010544744 A CN201010544744 A CN 201010544744A CN 102006184 A CN102006184 A CN 102006184A
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Abstract
The invention provides a management method, device and network device of the stack link. The management method comprises the following steps: establishing two or more of stack links between a stack switch and an adjacent stack switch in the stack system; establishing a stack neighbor table according to the stack links, wherein the stack neighbor table contains the MAC address and stack port information corresponding to the stack links; and determining one of the stack links as the data transmission link between the stack switch and the adjacent stack switch according to the MAC address and stack port information in the stack neighbor table. The method of the invention adopts a plurality of stack links to back up the data transmission link, thus solving the problem of the prior art that the stack is split when a single stack link is out of order and increasing the operation stability of the stack system.
Description
Technical field
The present invention relates to the exchange piling technology, relate in particular to a kind of link management method, device and network equipment of piling up.
Background technology
Along with popularizing and the continuous growth of network size of broadband application, the bulk velocity of network improves constantly, and the needs of big throughput data exchange and various intelligent use are increase day by day also.In order to satisfy the requirement of catenet to port number, the technology of piling up that generally can utilize switch couples together many stacked switch forms a pile system.Wherein, stacked switch refers to have the switch of stack port, and the piling up of switch is meant by the stack port of cable with stacked switch and couples together, to realize the expansion of separate unit switch ports themselves number.
The most frequently used topological structure of pile system is " daisy chain " topology, daisy chain, and, topology has two kinds of structures: ring topology and chain topology.Fig. 1 is the structural representation of the pile system of prior art ring topology, as shown in Figure 1, A13 among Fig. 1 and A14, B11 and B12, C13 and C14, D11 and D12, E11 and E12 are respectively the stack port of stacked switch A, stacked switch B, stacked switch C, stacked switch D and stacked switch E.Fig. 2 is the structural representation of the pile system of prior art chain topology, as shown in Figure 2, the A23 among Fig. 2, B23 and B24, C21 and C22, D21 and D22, E21 are respectively the stack port of stacked switch A, stacked switch B, stacked switch C, stacked switch D and stacked switch E.As can be seen, each stacked switch all has two stack ports in the pile system of ring topology from Fig. 1 and Fig. 2; Have two stacked switch to have only a stack port in the pile system of chain topology, other stacked switch except that these two stacked switch all have two stack ports.In pile system, message is transmitted and is followed the shortest path principle.For example: in ring topology, the message of stacked switch A can directly send to stacked switch E by stack port A13 and stack port E12, and can not need as the pile system of chain type topology to arrive stacked switch E again through stacked switch A, stacked switch B, stacked switch C, stacked switch D successively.
In pile system, the switch that all switches are regarded as an integral body manages, that is to say that all switches can be considered a switch from topological structure in the pile system, for example: have unique media interviews control (Media Access Control; Abbreviate as: MAC) address, by an Internet protocol (Internet Protocol; Abbreviate as: IP) address is managed and shared a configuration file etc.Pile system is by therefrom selecting a switch as main equipment, and other switches are as slave unit; Slave unit is under the jurisdiction of main equipment, is in charge of whole pile system by main equipment, comprises configuration distribution, agreement calculating etc.
But; pile system is run into through regular meeting in actual moving process and is piled up the contact of shortage is enough between cable and the stack port electromagnetism; piling up cable comes off; again or situation such as stack module fault; above-mentioned situation will have a strong impact on the stability and the reliability of pile system, can't operate as normal to cause pile system.When piling up when detecting certain stack port fault (Down), whole pile system can reset and restart, and re-elects main equipment.Aforesaid way may cause original pile system to be split into a plurality of sub-pile systems, a because shared a configuration file of sub-pile system, therefore may produce configuration conflict, causing equipment in each sub-pile system catastrophe failures such as network is unavailable to occur, is unacceptable for using above-mentioned fault as keys such as voice, video and electronic transactions especially.
In order to solve above-mentioned problem of piling up division, prior art judges whether to exist a plurality of main equipment conflicts by many main equipments testing mechanism, and when detecting a plurality of main equipment, only keeping a main equipment, the network interface of other main equipments is set to unavailable.This mode can solve piles up the configuration conflict that division produces, and still, is linked into all users that network interface is set to the disabled network equipment and long-time suspension will occur.This shows that the prior art scheme not can solve piles up fragmentation problem, therefore, need a kind of new technical scheme better to solve and pile up the configuration conflict problem that division causes.
Summary of the invention
The invention provides a kind of link management method, device and network equipment of piling up,, improve the stability of pile system operation in order to solve the fragmentation problem of piling up of prior art pile system existence.
The invention provides a kind of link management method that piles up, comprising:
In stacked switch and described stacked switch place pile system, set up two or more between the adjacent stacks switch and pile up link;
Pile up link according to described two or more, set up and pile up neighbor table, described piling up comprises described MAC Address and stack port information of piling up the link correspondence in the neighbor table;
According to described MAC Address and stack port information of piling up in the neighbor table, pile up the link from described two or more and to determine one to pile up link be data transmission link between described stacked switch and the described adjacent stacks switch.
The invention provides a kind of link management means of piling up, comprising:
The link establishment module is used for piling up link management means and described piling up set up two or more between the pile system adjacent stacks link management means of link management means place and piled up link described;
Neighbor table is set up module, is used for piling up link according to described two or more, sets up and piles up neighbor table, and described piling up comprises described MAC Address and stack port information of piling up the link correspondence in the neighbor table;
The first link determination module, be used for the MAC Address and the stack port information of piling up neighbor table, pile up from described two or more and determine one link to pile up link be the described data transmission link that piles up between link management means and the described adjacent stacks link management means according to described.
The invention provides a kind of network equipment, comprise arbitrary link management means of piling up provided by the invention.
Link management method, device and the network equipment of piling up provided by the invention, by between stacked switch and adjacent stacks switch, setting up two or more the link that piles up, and pile up link to many and manage by piling up neighbor table, pile up from many and determine one the link according to piling up the MAC Address of piling up the link correspondence of storing in the neighbor table and stack port information as the data transmission link between stacked switch and the adjacent stacks switch; Such scheme piles up link to many and manages realized setting up many schemes of piling up link between two adjacent stacks switches by piling up neighbor table, adopt many backups of piling up the link realization to data transmission link, to guarantee providing an available link that piles up at least to two adjacent stacks switches, solved and singlely in the prior art caused occurring piling up the problem of division when piling up link failure, and then improved the stability of pile system operation.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do one to the accompanying drawing of required use in embodiment or the description of the Prior Art below introduces simply, apparently, accompanying drawing in describing below is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of the pile system of prior art ring topology;
Fig. 2 is the structural representation of the pile system of prior art chain topology;
Fig. 3 be various embodiments of the present invention based on a kind of structural representation of pile system of chain topology;
The flow chart that piles up link management method that Fig. 4 provides for the embodiment of the invention one;
The flow chart that piles up link management method that Fig. 5 provides for the embodiment of the invention two;
The stacked switch that Fig. 6 A provides for the embodiment of the invention three is set up the flow chart of the method for piling up neighbor table;
Fig. 6 B is a kind of structural representation that respectively piles up protocol massages in the embodiment of the invention;
The flow chart of the method for the stacked switch specified data transmission link that Fig. 7 provides for the embodiment of the invention four;
Redefine the flow chart of the method for data transmission link during stacking opening fault that Fig. 8 provides for the embodiment of the invention five;
The structural representation of the pile system of a kind of ring topology that Fig. 9 A provides for the embodiment of the invention six;
The flow chart that piles up link management method that Fig. 9 B provides for the embodiment of the invention six;
The structural representation that piles up link management means that Figure 10 provides for the embodiment of the invention seven;
The structural representation that piles up link management means that Figure 11 provides for the embodiment of the invention eight.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention clearer, below in conjunction with the accompanying drawing in the embodiment of the invention, technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
Technical solution of the present invention is based on the pile system proposition, and the topological structure of pile system is not done qualification.In the prior art pile system, only have one between two adjacent stacks switches and pile up link, see for details illustrated in figures 1 and 2; And in the pile system of various embodiments of the present invention, establish two or more the link that piles up between two adjacent stacks switches, wherein have only one to pile up link and be chosen as data transmission link, be used to finish two transfer of data between the adjacent stacks switch, and other pile up link as the standby link that piles up, be used for when current data transmission link fault, replacing the current data transmission link, with the pile system division of avoiding factor reportedly to cause during the transmission link fault, and then overcome and pile up the configuration conflict that division causes, problems such as the user can't surf the Net for a long time.Wherein, Fig. 3 be various embodiments of the present invention based on a kind of structural representation of pile system of chain topology, as shown in Figure 3A, A11 and A12 among Fig. 3 A, A21, A22, B21 and B22, B31 and B32 are respectively stacked switch 1, the stacking opening of stacked switch 2 and stacked switch 3.Wherein, stacking opening A11 and stacking opening A21, and piling up link 11 and piling up link 12 between stacking opening A12 and stacking opening A22 formation stacked switch 1 and the stacked switch 2; Stacking opening B21 and stacking opening B31, and piling up link 21 and piling up link 22 between stacking opening B22 and stacking opening B32 formation stacked switch 2 and the stacked switch 3.Following each embodiment of the present invention will be that example describes to set up two pile systems that pile up link between adjacent two stacked switch shown in Figure 3, but for the pile system of setting up the chain topology of piling up link more than two, or the pile system of ring topology, technical solution of the present invention is suitable equally.
Embodiment one
The flow chart that piles up link management method that Fig. 4 provides for the embodiment of the invention one.As shown in Figure 4, the link management method that piles up of present embodiment comprises:
Step 401, in stacked switch and this stacked switch place pile system, set up two or more between the adjacent stacks switch and pile up link;
In conjunction with Fig. 3, stacked switch in the present embodiment and adjacent stacks switch can be stacked switch among Fig. 31 and stacked switch 2, also can be stacked switch among Fig. 32 and stacked switch 3.Wherein the link that piles up of two or more that set up can be to connect common gigabit mouth or 10,000,000,000 mouthfuls by cable or optical fiber cable to pile up, and also can be by special-purpose stack module and piles up cable and pile up.Wherein adopt common gigabit mouth or 10,000,000,000 mouthfuls of mode costs that pile up low, but provide pile up limited bandwidth; And adopt special-purpose stack module and pile up the mode cost height that cable piles up, but the bandwidth ratio that is provided is bigger.Present embodiment does not limit the specific implementation of piling up, and those skilled in the art can select in conjunction with the advantage of various implementations as required voluntarily.
Particularly, between stacked switch 1 and stacked switch 2, set up two respectively by this step 401 and piled up link, promptly piled up link 11 and pile up link 12; Between stacked switch 2 and stacked switch 3, set up two and piled up link, promptly piled up link 21 and pile up link 22, formed pile system shown in Figure 3.
Step 402, pile up link according to two or more, set up and pile up neighbor table, described piling up comprises the MAC Address and the stack port information of piling up the link correspondence in the neighbor table;
Wherein, the MAC Address of piling up the link correspondence is meant and piles up link-attached stacked switch and the MAC Address adjacent stacks switch; In conjunction with Fig. 3, piling up link 11 and piling up link 12 pairing MAC Address between stacked switch 1 and the stacked switch 2 is meant stacked switch 1 and MAC Address stacked switch 2; Piling up link 21 and piling up link 22 pairing MAC Address between stacked switch 2 and the stacked switch 3 is meant stacked switch 2 and MAC Address stacked switch 3.
The stack port information of piling up link is meant the relevant information of two stacking opening of piling up link.In various embodiments of the present invention, will be called first stacking opening, and the stacking opening on adjacent another stacked switch will be called second stacking opening as the stacking opening on the stacked switch of executive agent.As shown in Figure 3, the stacking opening of piling up link 11 is stacking opening A11 and stacking opening A21; The stacking opening of piling up link 12 is stacking opening A12 and stacking opening A22; The stacking opening of piling up link 21 is stacking opening B21 and stacking opening B31, and the stacking opening of piling up link 22 is stacking opening B22 and stacking opening B32.Wherein, with stacked switch 1 and stacked switch 2 is example, when with stacked switch 1 being benchmark when technical solution of the present invention is described, stacking opening A11 and stacking opening A12 belong to first stacking opening, and corresponding stacking opening A21 and stacking opening A22 belong to second stacking opening.
Stack port information comprises state (for example: up or down), stacking opening sign (being used to distinguish different stacking opening) and the Route Distinguisher information such as (whether be used to identify stacking opening place link are the current data transmission link) of stacking opening in various embodiments of the present invention.
Step 403, according to piling up MAC Address and stack port information in the neighbor table, pile up from two or more and to determine one link to pile up link be data transmission link between stacked switch and the adjacent stacks switch.
Comprise many in the neighbor table and pile up link owing to pile up, therefore need to determine wherein one, finish the transfer of data between stacked switch and the neighbours' stacked switch as data transmission link.And because technical solution of the present invention is an information such as the state, sign of MAC Address by stacked switch and stacking opening manages and pile up link, therefore, present embodiment with above-mentioned information as the foundation of piling up selection data transmission link the link from many.Need explanation at this, when the information when link is piled up in management changed, present embodiment was used to select the information of data transmission link also can change thereupon, and present embodiment is not limited to this.
Present embodiment pile up link management method, by being that two adjacent stacks switches are set up many and piled up link, and pile up link to many and manage by piling up neighbor table, piling up from many and select one the link and carry out transfer of data, other pile up link and can be used as the standby link that piles up.Wherein, pile up link to many and manage and realized existing between two adjacent stacks switches many schemes of piling up link by piling up neighbor table, adopt many backups of piling up the link realization to data transmission link, assurance provides an available link that piles up at least to two adjacent stacks switches, solved and singlely in the prior art caused occurring piling up the problem of division when piling up link failure, and then improved the stability of pile system operation.
Embodiment two
The flow chart that piles up link management method that Fig. 5 provides for the embodiment of the invention two.Present embodiment realizes that based on embodiment one as shown in Figure 5, the link management method that piles up of present embodiment comprises:
Step 501, in stacked switch and this stacked switch place pile system, set up two or more between the adjacent stacks switch and pile up link;
Step 502, pile up link according to two or more, set up and pile up neighbor table, described piling up comprises the MAC Address and the stack port information of piling up the link correspondence in the neighbor table;
Step 503, according to piling up MAC Address and stack port information in the neighbor table, pile up from two or more and to determine one link to pile up link be data transmission link between stacked switch and the adjacent stacks switch;
Wherein, above-mentioned steps 501-step 503 is identical with step 401-step 403 among the embodiment one, can not repeat them here referring to the description of embodiment one.
Further, in the present embodiment, above-mentioned steps 501-step 503 is mainly the initial operation that each stacked switch carries out after start, can determine a unique data transmission link in twos between the adjacent stacks switch by aforesaid operations; Afterwards, each stacked switch carries out the election of main equipment based on determined data transmission link, sets up pile system.Wherein, the process of carrying out the election of main equipment and setting up pile system according to the data transmission link of being set up is a prior art, and present embodiment repeats no more.After pile system was set up, the link management method that piles up of present embodiment further may further comprise the steps:
Step 504, stacked switch detect the state of first stacking opening of data transmission link;
Particularly, whether first stacking opening that stacked switch detects data transmission link breaks down, and when breaking down, the state of first stacking opening of data transmission link is for disconnecting; Otherwise be normal condition, i.e. connection status.When detecting when breaking down execution in step 505; Otherwise, do not carry out any operation.Wherein, first stacking opening in this step 504 be meant as on the stacked switch of executive agent as the stacking opening of piling up link of data transmission link.
When step 505, stacked switch are off-state in first stacking opening that detects data transmission link, according to the MAC Address and the stack port information of piling up in the neighbor table, pile up the link from two or more and to determine that another piles up link is data transmission link between stacked switch and the adjacent stacks switch.
Particularly, this step is used for when link (being data transmission link) fault appears piling up in the pile system running piling up the processing that link carries out.Promptly reselect one and pile up link as the data transmission link between stacked switch and the adjacent stacks switch, pile up the problems such as pile system division, configuration conflict and network concussion that link failure causes with solution, improve the stability and the reliability of pile system operation.
Present embodiment provides piles up link management method, pile up link by between two adjacent stacks switches, setting up many, and pile up the scheme that link manages to many and realize having many schemes of piling up link between two adjacent stacks switches by piling up neighbor table, when the current data transmission link breaks down, again pile up the link from many and select one new to pile up link according to piling up neighbor table as data transmission link, to avoid because of piling up the pile system division that link failure causes, problems such as configuration conflict and network concussion have improved the stability and the reliability of pile system operation.
Following examples of the present invention provide a kind of stacked switch to pile up link according to two or more, set up the embodiment of piling up neighbor table.
Embodiment three
The stacked switch that Fig. 6 A provides for the embodiment of the invention three is set up the flow chart of the method for piling up neighbor table.Present embodiment is based on embodiment one or embodiment two, and promptly the method for present embodiment can be used as a kind of embodiment of step 402 or step 502.As shown in Figure 6A, the method for present embodiment comprises:
Particularly, after stacked switch start and carrying out before main equipment elects, each stacked switch all can send first to the stacking opening of this locality pile up protocol massages, and this first piles up protocol massages and be transferred to the adjacent stacked switch by the link of setting up before that piles up.Wherein, first piles up protocol massages is used to make the stacked switch foundation of pile system to pile up neighbor table, mainly comprises the MAC Address of transmit leg and the sign that the stacking opening of protocol massages is piled up in transmission first.Wherein, present embodiment is not done qualification to first transmission frequency of piling up protocol massages.For example: can continue to send first in a bit of time with the frequency of a message of per second before carrying out the main equipment election and pile up protocol massages, wherein carry out the main equipment election a bit of time before and can be scheduled in advance, its occurrence is not done qualification yet.
Therefore, the stacked switch of present embodiment can receive first of adjacent stacks switch transmission and pile up protocol massages, wherein for the stacked switch of present embodiment, first piles up the sign that second stacking opening of piling up link (promptly being positioned at the stacking opening on the adjacent stacks switch) of protocol massages is piled up in the MAC Address that carries the adjacent stacks switch in the protocol massages and transmission first.
In like manner, the stacked switch of present embodiment also can by and the adjacent stacks switch between set up two or more pile up chain road direction adjacent stacks switch and send first and pile up protocol massages, set up it for the adjacent stacks switch and pile up neighbor table; At this moment, still the stacked switch with present embodiment is a benchmark, and first piles up the sign that to be present embodiment pile up first stacking opening of piling up link of protocol massages as the MAC Address and the transmission first of the stacked switch of executive agent of carrying in the protocol massages.
When the stacked switch of present embodiment receive first pile up protocol massages after, extract first and pile up the MAC Address of the adjacent stacks switch in the protocol massages and the sign of second stacking opening; The first wherein predetermined in advance form that piles up protocol massages can know that following information: purpose MAC is a broadcast address, source MAC is the MAC Address of adjacent stacks switch, ethernet type (Type) is for piling up agreement, for example: 0xbbbb, and by fill code (Code) field be preset value (for example: 1) represent that this protocol massages is first to pile up protocol massages, Route Distinguisher field acquiescence is changed to 0, transmit leg MAC is a source MAC, the transmit leg stacking opening is designated the first stacking opening sign of piling up protocol massages takes place on the adjacent stacks switch, and other field all is filled to 0.Then, set up the neighbor table of piling up of information such as comprising neighbours' stacking opening sign, neighbours' stacking opening state, local stacking opening sign, local stacking opening state and Route Distinguisher according to above-mentioned information.
Wherein, each stacked switch in the pile system all can adopt aforesaid way to set up the neighbor table of piling up of oneself.
Present embodiment provides passes through to send first and piles up protocol massages and make stacked switch set up the technical scheme of piling up neighbor table so that corresponding stack port information to be provided on each stacking opening, have and simply be convenient to the advantage implemented, the stack port information that provides with interactive mode of each stacked switch simultaneously can guarantee the accuracy and the real-time of stack port information.
Present embodiment specifically provides a kind of first enforcement structure of piling up protocol massages, shown in Fig. 6 B, but is not limited to this.Concrete, first to pile up in the protocol massages meaning of each field as shown in table 1 for this.
Table 1
Above-mentioned first implementation structure that piles up protocol massages comprised setting up and piled up the required relevant information of neighbor table, transmitted bulk information with relatively simple message form, can conserve system resources.
In conjunction with pile system shown in Figure 3, first pile up protocol massages and set up that to pile up neighbor table be that example describes present embodiment in detail and sets up the specific implementation process of piling up neighbor table according to what stacked switch 2 sent with stacked switch 1.
Concrete, before carrying out the main equipment election, stacked switch 2 piles up protocol massages according to the structure construction first that piles up protocol massages shown in Fig. 6 B, and sends to stacked switch 1 by stacking opening A21 and stacking opening A22 respectively.Wherein, mailing to first of stacking opening A21 piles up the information that protocol massages comprises and be: source MAC is the MAC Address of stacked switch 2, is designated as MAC 2; Target MAC (Media Access Control) address is a broadcast address, is made as FFFF.FFFFF.FFFF; Types value is 0xbbbb; Code value is 1; The identifier word segment value is 0; Transmit leg MAC is MAC 2; The transmit leg stacking opening is A21; Recipient MAC and recipient's stacking opening value respectively are 0.Mailing to first of stacking opening A22 piles up the information that protocol massages comprises and be: source MAC is the MAC Address of stacked switch 2, and promptly MAC 2; Target MAC (Media Access Control) address is a broadcast address, is made as FFFF.FFFFF.FFFF; Types value is 0xbbbb; Code value is 1; The identifier word segment value is 0; Transmit leg MAC is MAC 2; The transmit leg stacking opening is A22; Recipient MAC and recipient's stacking opening value respectively are 0.
For stacked switch 1, first pile up protocol massages from what local stacking opening A11 and A12 had received that stacked switch 2 sends respectively, first pile up the transmit leg MAC and the transmit leg stacking opening sign of carrying in the protocol massages and create the neighbor table of piling up as shown in table 2 according to what receive.
Table 2
Wherein, neighbours MAC is the MAC Address of stacked switch 2, neighbours' stacking opening is designated the stacking opening of stacked switch 2, neighbours' stacking opening state is up, local stacking opening is designated stacked switch 1 and receives this first stacking opening of piling up protocol massages, and local stacking opening state is up, and route indication is 0, represent that this stacking opening is not the outlet that data flow is transmitted, promptly to pile up link be not data transmission link at this stacking opening place.
In like manner, stacked switch 2 and stacked switch 3 also can be in the same way according to its adjacent stacked switch send first pile up protocol massages set up its separately pile up neighbor table, respectively shown in table 3 and table 4.
Table 3
Table 4
Provide a kind of stacked switch according to the embodiment of piling up neighbor table specified data transmission link based on the technique scheme embodiment of the invention four.
Embodiment four
The flow chart of the method for the stacked switch specified data transmission link that Fig. 7 provides for the embodiment of the invention four.Present embodiment can realize that present embodiment can be considered a kind of embodiment of step 403 or step 503 based on embodiment one, embodiment two or embodiment three.As shown in Figure 7, the method for present embodiment comprises:
Neighbours' MAC Address and local mac address that step 701, stacked switch will pile up in the neighbor table compare; If comparative result be local mac address greater than this neighbours' MAC Address, then execution in step 702; Otherwise then execution in step 706.
Concrete, in the present embodiment, each neighbours' MAC Address and local mac address that stacked switch will pile up in the neighbor table compare; For the MAC Address adjacent stacks switch littler, carry out subsequent treatment according to step 702 than local mac address; For the MAC Address adjacent stacks switch bigger, carry out subsequent treatment according to step 706 than local mac address.
Wherein, the first transmission stacking opening is except when stacked switch and the standby stacking opening of piling up link of certain bar between the adjacent stacks switch outside the link piled up at preceding data transmission link place, is used to redefine the data transmission link between stacked switch and the adjacent stacks switch.The standby link that piles up is meant that other except that link is piled up at current data transmission link place pile up link between stacked switch and the adjacent stacks switch.Need explanation at this, present embodiment step 701 and step 702 specifically provide a kind of and have determined that according to MAC Address and stack port information first sends the method for stacking opening, but are not limited to; For example: can also be in step 701 with " local mac address is less than neighbours' MAC Address " condition as execution in step 702, can also be other Rule of judgment that can be discerned by each stacked switch of presetting etc.In like manner, in step 702, send the stacking opening as first except the stacking opening of selecting local stacking opening sign maximum, also can select the minimum stacking opening of local stacking opening sign to send stacking opening as first, can also be other alternative conditions that can be discerned by each stacked switch of presetting etc.
Wherein, second piles up in the protocol massages except comprising that first sends the sign of stacking opening, also can comprise neighbours' MAC Address, neighbours' stacking opening sign, local mac address and the Route Distinguisher etc. that pile up in the neighbor table, and corresponding being encapsulated in second each field of piling up in the protocol massages.The second concrete enforcement structure of piling up protocol massages can be referring to shown in Fig. 6 B, and itself and first difference of piling up protocol massages are: the value of identification field is 1, is used for representing to require the adjacent stacks switch to respond and return second and pile up the protocol responses message; The code field value is 2, and this second piles up protocol massages and be used for initial specified data transmission link to be used for mark.
When the adjacent stacks switch receives second when piling up protocol massages, can inquire about it according to second sign of piling up the transmission of first in protocol massages stacking opening and pile up neighbor table, obtain the pairing clauses and subclauses of sign of the first transmission stacking opening, and the Route Distinguisher in the corresponding clauses and subclauses is revised as 1, will be with the link that piles up of determining this clauses and subclauses correspondence as data transmission link; Then, return second to stacked switch and pile up response message.
Stacked switch receives that second piles up after the response message, know that the adjacent stacks switch revised it and piled up neighbor table and determined data transmission link, the same modification locally piles up that first Route Distinguisher that sends the sign place clauses and subclauses of stacking opening is 1 in the neighbor table.
Wherein, second form that piles up response message also can be referring to shown in Fig. 6 B, and itself and second difference of piling up protocol massages are: the identification field value is 2, is used to represent that it is a response message.The entrained various information of second response message can be piled up protocol massages and piling up the neighbor table of adjacent stacks switch obtained from second.The implication of its each field repeats no more.
It is after 1 that stacked switch is revised first Route Distinguisher that sends the stacking opening correspondence, can determine that first link that piles up that sends the stacking opening place is a data transmission link, and carry out the subsequent packet transmission by this data transmission link.
Concrete, when the local mac address of stacked switch during less than the MAC Address of adjacent stacks switch, the adjacent stacks exchange opportunity is judged and is drawn the conclusion of its local mac address greater than neighbours' MAC Address, and carries out the operation of similar step 702 and step 703.Stacked switch second piles up protocol massages and will receive that the adjacent stacks switch sends.
Concrete, stacked switch piles up in the protocol massages first sign of being determined by the adjacent stacks switch that sends stacking opening according to second, and revising its Route Distinguisher that piles up in the neighbor table is 1, piles up neighbor table with renewal.Wherein, second piles up the entrained various information of response message and can pile up piling up the neighbor table of protocol massages and stacked switch from second and obtain.The implication of its each field repeats no more.Second piles up response message is used for upgrading its neighbours for the adjacent stacks switch and piles up table, and the specified data transmission link, wherein the adjacent stacks switch determines that according to second response message specific operation process of described data transmission link can be referring to the description of step 702-step 705.
After stacked switch is revised it and piled up Route Distinguisher in the neighbor table and be 1, can determine that first link that piles up that sends the stacking opening place is a data transmission link.So far, the EO of the initial specified data transmission link of stacked switch, and can continue to carry out main equipment election operation to set up pile system.
Present embodiment provides a kind of stacked switch according to the method for piling up neighbor table specified data transmission link before pile system is set up, and wherein step 701, step 702 and step 706 are specially according to the MAC Address and the stack port information of piling up in the neighbor table and determine that first sends a kind of execution mode of stacking opening.And step 702-step 705 and step 706-step 708 are respectively the method for stacked switch specified data transmission link under different condition.This technical scheme is directly utilized the relevant information of piling up in the neighbor table, and its information is obtained conveniently, has simple advantage easy to implement.
Describe the implementation process of the above-mentioned technical solutions of this embodiment in detail in conjunction with pile system shown in Figure 3.Wherein, the MAC Address of supposing stacked switch 1 is greater than the MAC Address of stacked switch 2 MAC Address greater than stacked switch 3.And suppose the sign of the sign of stacking opening A21 greater than stacking opening A22; The sign of stacking opening B21 is greater than the sign of stacking opening B22.
1 pair of local mac address of stacked switch and neighbours' MAC Address compare, and find the stacked switch 2 littler than local mac address; Then, pile up the list item that local stacking opening state is up in the neighbor table shown in the look-up table 2, find to exist the list item of 2 stacked switch 2, and the local stacking opening of these two list item correspondences is A11 and A12.Stacked switch 1 is therefrom selected the big stacking opening of local stacking opening sign, i.e. stacking opening A11, and the outlet that this stacking opening A11 is transmitted as the data flow that arrives stacked switch 2, promptly stacking opening A11 first sends stacking opening.
Stacked switch 1 sends second by this stacking opening A11 and piles up protocol massages to stacked switch 2 behind definite stacking opening A11.This second piles up protocol massages and comprises following information: the MAC Address of transmit leg, transmit leg stacking opening sign, recipient's MAC Address (promptly piling up the neighbours MAC in the clauses and subclauses of stacking opening A11 place in the neighbor table), recipient's stacking opening sign (promptly piling up the sign of the neighbours' stacking opening in the clauses and subclauses of stacking opening A11 place in the neighbor table).At this moment, stacked switch 1 waits for that stacked switch 2 returns second and piles up response message.
2 pairs of local mac address of stacked switch and neighbours' MAC Address compare, and find than little stacked switch 3 of local mac address and the stacked switch 1 bigger than local mac address.For the stacked switch 1 bigger than local mac address, stacked switch 2 does not carry out any operation, waits for that receiving second of stacked switch 1 transmission piles up protocol massages.Stacked switch 2 receives second of stacked switch 1 transmission and piles up after the protocol massages, extract second and pile up relevant information in the protocol massages (for example the MAC Address of transmit leg, transmit leg stacking opening sign, recipient's MAC Address, recipient's stacking opening sign etc.), then, pile up in this locality of stacked switch 2 and to find corresponding clauses and subclauses in the neighbor table, and upgrade and pile up neighbor table, promptly revising the Route Distinguisher that piles up the corresponding clauses and subclauses of neighbor table is 1, the data flow forwarding outlet that arrives stacked switch 1 is set is stacking opening A21.Simultaneously, stacked switch 2 returns second to stacked switch 1 and piles up response message.It is 1 that stacked switch 1 piles up the Route Distinguisher that response message upgrades stacking opening A11 place clauses and subclauses according to second, after the renewal of stacked switch 1 to pile up neighbor table as shown in table 5.
For the stacked switch 3 littler than local mac address, stacked switch 2 continues the list item that local stacking opening state is up in the neighbor table that piles up shown in the look-up table 3, find to exist the list item of 2 stacked switch 3, and the local stacking opening of these two list item correspondences is B21 and B2.Stacked switch 2 is therefrom selected the big stacking opening of local stacking opening sign, i.e. stacking opening B21, and the outlet that this stacking opening B21 is transmitted as the data flow that arrives stacked switch 3, promptly stacking opening B21 first sends stacking opening.
3 pairs of local mac address of stacked switch and neighbours' MAC Address compare, and find the stacked switch 2 bigger than local mac address; Stacked switch 3 does not carry out any operation, waits for that receiving second of stacked switch 2 transmissions piles up protocol massages.Stacked switch 3 receives second of stacked switch 2 transmissions and piles up after the protocol massages, extract second and pile up relevant information in the protocol massages (for example the MAC Address of transmit leg, transmit leg stacking opening sign, recipient's MAC Address, recipient's stacking opening sign etc.), then, pile up in this locality of stacked switch 3 and to find corresponding clauses and subclauses in the neighbor table, and upgrade and pile up neighbor table, promptly revising the Route Distinguisher that piles up the corresponding clauses and subclauses of neighbor table is 1, the data flow forwarding outlet that arrives stacked switch 2 is set is stacking opening B31.Simultaneously, stacked switch 3 returns second to stacked switch 2 and piles up response message.It is 1 that stacked switch 2 piles up the Route Distinguisher that response message upgrades stacking opening B21 place clauses and subclauses according to second, after the renewal of stacked switch 2 to pile up neighbor table as shown in table 6, after stacked switch 3 upgrades to pile up neighbor table as shown in table 7.
Table 5
Table 6
Table 7
As seen by the way, determined data transmission link respectively between stacked switch 1, stacked switch 2 and the stacked switch 3, the Route Distinguisher in the neighbor table of piling up that is separately is 1 the link that piles up.
Further, each stacked switch has been set up after the data transmission link, can send other by data transmission link and pile up protocol massages to carry out the election of main equipment, is responsible for pile system is managed by the main equipment that elects, to set up pile system.After pile system is set up, in running, pass through to detect in real time the state of the stacking opening of data transmission link, when the stacking opening fault (for example down) of finding data transmission link, can be according to piling up neighbor table selected data transmission link again.Following examples of the present invention provide a kind of execution mode that redefines data transmission link when the data transmission link fault.
Embodiment five
Redefine the flow chart of the method for data transmission link during stacking opening fault that Fig. 8 provides for the embodiment of the invention five.Present embodiment can realize that present embodiment can be considered a kind of embodiment of step 505 among the embodiment two based on embodiment two, embodiment three or embodiment four.As shown in Figure 8, the method for present embodiment comprises:
It is data transmission link between stacked switch and the adjacent stacks switch that step 805, stacked switch redefine second link that piles up that sends the stacking opening place, so far, stacked switch redefines the EO of data transmission link, after this, can continue to carry out the operations such as state of the stacking opening that detects the new data transmission link.
Concrete, when the local mac address of stacked switch during less than the MAC Address of adjacent stacks switch, the adjacent stacks exchange opportunity is judged and is drawn the conclusion of its local mac address greater than neighbours' MAC Address, and carries out the operation of similar step 802 and step 803.The 3rd pile up protocol massages and stacked switch will receive that the adjacent stacks switch sends, and execution in step 807.
Concrete, stacked switch piles up in the protocol massages second sign of being determined by the adjacent stacks switch that sends stacking opening according to the 3rd, and revising its Route Distinguisher that piles up in the neighbor table is 1, piles up neighbor table with renewal; Wherein, it is used that the 3rd response message is used for redefining new data transmission link for the adjacent stacks switch, the process of adjacent stacks switch specified data transmission link can be referring to the description of above-mentioned steps 802-step 805, and the information that described the 3rd response message comprises can be piled up piling up the neighbor table of protocol massages and stacked switch from the 3rd and be obtained.
It is data transmission link between stacked switch and the adjacent stacks switch that step 808, stacked switch redefine second link that piles up that sends the stacking opening place.
After stacked switch is revised it and piled up Route Distinguisher in the neighbor table and be 1, can determine that second link that piles up that sends the stacking opening place is new data transmission link.So far, stacked switch redefines the EO of data transmission link, and can continue to carry out the operations such as state of the stacking opening that detects the new data transmission link.
Need explanation at this, the method of the initial specified data transmission link that method that redefines data transmission link that present embodiment provides and embodiment four provide adapts, for example require among the embodiment four step 701 identical with the Rule of judgment of present embodiment step 801, step 703 is identical with present embodiment step 803 alternative condition among the embodiment four.Detailed argumentation about the present embodiment technical scheme can be given unnecessary details at this no longer in detail referring to embodiment four.
Describe the implementation process that present embodiment redefines data transmission link in detail in conjunction with pile system shown in Figure 3.Wherein, see also embodiment four parts, also suppose data transmission link fault between stacked switch 1 and the stacked switch 2 at present embodiment about the assumed condition that each stacked switch among Fig. 3 is done.
After stacked switch 1 detects stacking opening A11 and is off-state, local mac address and neighbours' MAC Address are compared, find the stacked switch 2 littler than local mac address; Then, the local stacking opening state in the neighbor table of piling up shown in the look-up table 2 find to exist the list item of 1 stacked switch 2, and the local stacking opening of this list item correspondence is A12 for connecting the list item of (up).Owing to have only a list item, therefore there is not the operation of relatively choosing the maximum stacking opening of local stacking opening sign, stacked switch 1 can directly be selected stacking opening A12, with the outlet that this stacking opening A12 transmits as the data flow that arrives stacked switch 2, promptly stacking opening A12 is the second transmission stacking opening.
Stacked switch 1 sends the 3rd by this stacking opening A12 and piles up protocol massages to stacked switch 2 behind definite stacking opening A12.The 3rd piles up protocol massages comprises following information: the MAC Address of transmit leg, transmit leg stacking opening sign, recipient's MAC Address (promptly piling up the neighbours MAC in the clauses and subclauses of stacking opening A12 place in the neighbor table), recipient's stacking opening sign (promptly piling up the sign of the neighbours' stacking opening in the clauses and subclauses of stacking opening A12 place in the neighbor table).At this moment, stacked switch 1 waits for that stacked switch 2 returns the 3rd and piles up response message.
After stacked switch 2 detects stacking opening A21 and is off-state, local mac address and neighbours' MAC Address are compared, find the stacked switch 1 bigger than local mac address.For the stacked switch 1 bigger than local mac address, stacked switch 2 does not carry out any operation, waits for that receiving the 3rd of stacked switch 1 transmission piles up protocol massages.Stacked switch 2 receives the 3rd of stacked switch 1 transmission and piles up after the protocol massages, extract the 3rd and pile up relevant information in the protocol massages (MAC Address of transmit leg for example, transmit leg stacking opening sign, recipient's MAC Address, recipient's stacking opening sign etc.), then, pile up in this locality of stacked switch 2 and to find corresponding clauses and subclauses in the neighbor table, and upgrade and pile up neighbor table, promptly revising the Route Distinguisher that piles up the corresponding clauses and subclauses of neighbor table is 1, neighbours' stacked state and the local stacked state of revising stacking opening A21 place clauses and subclauses simultaneously are fault (down), Route Distinguisher is 0, the data flow forwarding outlet that arrives stacked switch 1 is set is stacking opening A22.Simultaneously, stacked switch 2 returns the 3rd to stacked switch 1 and piles up response message.Stacked switch 1 is respectively 0 and 1 according to the 3rd Route Distinguisher that piles up response message renewal stacking opening A11 and A12 place clauses and subclauses, and the neighbours' stacking opening state and the local stacking opening state that upgrade stacking opening A11 place clauses and subclauses simultaneously are fault (down).Wherein, after the renewal of stacked switch 1 to pile up neighbor table as shown in table 8; After the renewal of stacked switch 2 to pile up neighbor table as shown in table 9.
Table 8
Table 9
In like manner, when the data transmission link fault between stacked switch 2 and the stacked switch 3, when perhaps detecting between stacked switch 1 and the stacked switch 2 new established data transmission link fault once more, all can adopt same way as to redefine new data transmission link.
Further, when stacked switch 1 detects stacking opening A11 or stacked switch 2 and detects stacking opening A21 and reconnect in the subsequent detection process, can revise and pile up in the neighbor table the local stacking opening state in the corresponding clauses and subclauses and neighbours' stacking opening state for being connected (up), so that this clauses and subclauses correspondence pile up link once more as the standby link that piles up, to be confirmed as new data transmission link when the current data transmission link fault.
By foregoing description as can be known: present embodiment piles up link by set up many between two adjacent stacks switches, can when current data transmission link fault, pile up link as new data transmission link with other, compare with the single link that piles up of prior art, can reduce and pile up the probability that piles up problems such as division, configuration conflict or network concussion that link failure causes, the stability and the reliability of pile system operation have been improved, to meet consumers' demand.
Embodiment six
The structural representation of the pile system of a kind of ring topology that Fig. 9 A provides for the embodiment of the invention six.The flow chart that piles up link management method that Fig. 9 B provides for the embodiment of the invention six.Present embodiment can realize based on previous embodiment, and the difference of itself and previous embodiment is: the pile system in the present embodiment is a ring topology, comprises stacked switch 1, stacked switch 2 and stacked switch 3.Shown in Fig. 9 B, the link management method that piles up of present embodiment comprises: step 901, set up two pile up link between each adjacent stacks switch.Through after this step, set up two respectively between three stacked switch shown in Fig. 9 A and pile up link.Wherein, stacking opening A11 and stacking opening A21, two between stacking opening A12 and stacking opening A22 formation stacked switch 1 and the stacked switch 2 are piled up link; Stacking opening B21 and stacking opening B31, two between stacking opening B22 and stacking opening B32 formation stacked switch 2 and the stacked switch 3 are piled up link; Stacking opening C11 and stacking opening C31, two between stacking opening C12 and stacking opening C32 formation stacked switch 1 and the stacked switch 3 are piled up link.
Step 902, each stacked switch rose behind the machine before setting up pile system, send first to local stacking opening respectively and pile up protocol massages, and receive that the adjacent stacks switch sends first pile up protocol massages, then, first pile up protocol massages and make up and pile up neighbor table according to what receive.
Illustrate, stacked switch 1 sends first by its stacking opening A11 and stacking opening A12 to stacked switch 2 respectively and piles up protocol massages, sends first by its stacking opening C11 and stacking opening C12 to stacked switch 3 and piles up protocol massages; Stacked switch 1 also can first pile up protocol massages by what stacking opening A11 and stacking opening A12 and stacking opening C11 and stacking opening C12 received respectively that stacked switch 2 and stacked switch 3 send.
Step 903, each stacked switch compare local mac address and neighbours' MAC Address of piling up in the neighbor table; When local mac address is littler than opposite end neighbours' MAC Address, that waits for then that the opposite end sends second piles up protocol massages and upgrades to pile up neighbor table and data flow is set and transmit outlet; When local mac address is bigger than opposite end neighbours' MAC Address, then searches and pile up neighbor table and obtain the list item of MAC Address than self little opposite end neighbours' correspondence; If there are many list items, the local stacking opening state of selecting a correspondence in many same neighbours' many list items is for connecting (up), and should this locality stacking opening identify maximum list item, and send second towards the local stacking opening of selected list item correspondence and pile up protocol massages, and wait opposite end neighbours' response, upgrade then and pile up the Route Distinguisher of neighbor table, data flow is set transmits outlet.
Step 904, each stacked switch are transmitted outlet by the data flow that is provided with and are begun to elect main equipment, set up pile system.
Step 905, pile system operation, each stacked switch detects its stacking opening state.The a certain link failure that piles up appears in the pile system running, this piles up two stacked switch that link connects and detects current stacking opening and disconnect, stacking opening state and the corresponding neighbours' stacking opening state of then revising the stacking opening of piling up this corresponding in neighbor table disconnection are fault (down), and Route Distinguisher is revised as 0.Afterwards, search and pile up the neighbours MAC that neighbor table is obtained the local stacking opening correspondence that disconnects, relatively the size of local mac address and neighbours' MAC Address; When local mac address is littler than opposite end neighbours' MAC Address, that waits for then that the opposite end sends the 3rd piles up protocol massages and upgrades to pile up neighbor table and new data flow is set and transmit outlet; When local mac address during greater than neighbours' MAC Address, then search and pile up another stacking opening that neighbor table finds neighbours' MAC Address correspondence, and with another stacking opening state and corresponding neighbours' stacking opening status modifier for connecting (up), send the 3rd by this another stacking opening simultaneously and pile up protocol massages, and wait for opposite end neighbours' response.
Step 906, each stacked switch pile up protocol massages or pile up the response message that protocol massages is made to the 3rd according to the 3rd of opposite end neighbours transmission, upgrade this locality and pile up neighbor table, the Route Distinguisher that the corresponding list item of this another stacking opening in the neighbor table is piled up in modification is 1, revises the data flow forwarding outlet that arrives the opposite end neighbours and is the local stacking opening of this list item correspondence.
Step 907, after fault is piled up link-recovery and is connected, the stacking opening that stacked switch detects disconnection connects again, then revise the stacking opening state pile up the stacking opening that this reconnects in the neighbor table and respective neighbours stacking opening state for being connected (up), make the link that piles up after the connection become an available link that piles up again, and change and go execution in step 905.
Wherein, the detailed process of above steps can not repeat them here referring to the description of the various embodiments described above of the present invention.
Present embodiment pile up link management method, by increasing the extra link that piles up, and before the main equipment election, pile up neighbor table to realize to many management of piling up link by the specific protocol massages establishment of piling up of mutual transmission, make that can revise data flow forwarding outlet when finding the data forwarding link failure is another stacking opening, thereby guarantee the stability of pile system operation, effectively reduce and pile up the probability that link failure causes the pile system division, improved the reliability of the network operation.
Embodiment seven
The structural representation that piles up link management means that Figure 10 provides for the embodiment of the invention seven.As shown in figure 10, the link management means of piling up of present embodiment comprises: link establishment module 91, neighbor table are set up the module 92 and the first link determination module 93.
Present embodiment pile up link management means, can be used for carrying out the flow process of piling up link management method that the embodiment of the invention provides, can between the adjacent stacks link management means, set up many by the link establishment module and pile up link, setting up module by neighbor table piles up link to many and manages, pile up the link from many by the first link determination module and to select one as data transmission link, and other pile up link as the standby link that piles up, can as data transmission link pile up link failure the time new data transmission link is provided.Therefore, the present embodiment technical scheme is compared with the single link that piles up in the prior art, can guarantee the stability of pile system operation, effectively reduces and piles up the probability that link failure causes the pile system division, improves the reliability of the network operation.
Embodiment eight
The structural representation that piles up link management means that Figure 11 provides for the embodiment of the invention eight.Present embodiment can be based on embodiment seven, and as shown in figure 11, the device of present embodiment also comprises: the state detection module 94 and the second link determination module 95.
Wherein, state detection module 94 is connected with the first link determination module 93, is used to detect the state of first stacking opening of data transmission link; The second link determination module 95, setting up module 92 with state detection module 94 and neighbor table respectively is connected, be used for when first stacking opening that state detection module 94 detects data transmission link is off-state, according to the MAC Address and the stack port information of piling up in the neighbor table, pile up the link from two or more and to determine that another piles up link is the data transmission link that piles up between link management means and the adjacent stacks link management means.
Based on technique scheme, present embodiment provides a kind of neighbor table to set up the implementation structure of module 92.As shown in figure 11, neighbor table is set up module 92 and comprised: the first protocol massages receiving element 921 and neighbor table are set up unit 922.The first protocol massages receiving element 921, be connected with link establishment module 91, be used to receive the adjacent stacks link management means and first pile up protocol massages by what two or more piled up that link sends, described first piles up protocol massages comprises that the MAC Address of adjacent stacks link management means and two or more pile up the sign of second stacking opening of link; Neighbor table is set up unit 922, is connected with the first protocol massages receiving element 921, is used for piling up protocol massages and receiving first first stacking opening of piling up protocol massages according to first, sets up and piles up neighbor table.
The structure that above-mentioned neighbor table is set up module is used to implement send mutually first and piles up protocol massages and set up the technical scheme of piling up neighbor table.Wherein, each piles up link management means needs transmission first mutually to pile up protocol massages, therefore, the link management means of piling up of present embodiment also comprises: message sending module 96, be connected with link establishment module 91, be used for piling up chain road direction adjacent stacks link management means transmission first and pile up protocol massages, set up it for the adjacent stacks link management means and pile up neighbor table by two or more; Described first piles up protocol massages comprises that the MAC Address of link management means is piled up in this locality and two or more piles up the sign of first stacking opening of link.
Further, the first link determination module of present embodiment is concrete according to the neighbours' MAC Address and local mac address and the stack port information specified data transmission link that pile up in the neighbor table.A kind of embodiment is that local mac address and neighbours' MAC Address are compared, and according to definite mode of comparative result specified data transmission link.For example:, pile up the operation that link management means is initiated the specified data transmission link by this locality when local mac address during greater than neighbours' MAC Address; Otherwise, initiate the operation of specified data transmission link by the adjacent stacks link management means.Wherein, the first link determination module that can be used for implementing the present embodiment of technique scheme comprises: the first stacking opening determining unit, the first protocol massages transmitting element, the first response message receiving element, first information updating block and the first link determining unit.Can when for example local mac address is greater than neighbours' MAC Address, piles up link management means by this locality and initiate and finish determining of data transmission link in one case by the above-mentioned functions unit.
Particularly, the first stacking opening determining unit is used for according to the MAC Address and the stack port information of piling up neighbor table, determines that first sends stacking opening; The first protocol massages transmitting element is used for sending second to the adjacent stacks link management means and piling up protocol massages by the first transmission stacking opening, and described second piles up protocol massages comprises that first sends the sign of stacking opening; The first response message receiving element, be used to receive the adjacent stacks link management means according to second pile up that protocol massages sends second pile up response message; First information updating block is used for piling up response message according to second and upgrades the stack port information of piling up neighbor table; The first link determining unit is used for determining that first link that piles up that sends the stacking opening place is the data transmission link that piles up between link management means and the adjacent stacks link management means.
Further, the first link determination module of present embodiment also comprises: the second protocol massages receiving element, second information updating unit and the second link determining unit.Can when for example local mac address is less than neighbours' MAC Address, finish determining of data transmission link in another case by the above-mentioned functions unit.
Particularly, the second protocol massages receiving element, be used for according to the MAC Address and the stack port information of piling up neighbor table, receive second of adjacent stacks link management means transmission and pile up protocol massages, described second piles up protocol massages comprises that first sends the sign of stacking opening; The described first transmission stacking opening is to be determined according to MAC Address and stack port information that it piles up in the neighbor table by the adjacent stacks link management means; Second information updating unit, be used for piling up protocol massages according to second, the stack port information in the neighbor table is piled up in renewal, and pile up protocol massages according to second and pile up response message to adjacent stacks link management means transmission second, determine described data transmission link for the adjacent stacks link management means; The second link determining unit is used for determining that first link that piles up that sends the stacking opening place is the data transmission link that piles up between link management means and the adjacent stacks link management means.
Based on technique scheme, the second link determination module also can adopt according to the MAC Address and the stack port information of piling up in the neighbor table and redefine data transmission link in the present embodiment.Similar with the first link determination module, the second link determination module of present embodiment comprises: the second stacking opening determining unit, the second protocol massages transmitting element, the second response message receiving element, the 3rd information updating unit and the 3rd link determining unit.The second link determination module can be realized redefining data transmission link in one case by the above-mentioned functions unit.
Particularly, the second stacking opening determining unit is used for according to the MAC Address and the stack port information of piling up neighbor table, determines that second sends stacking opening; The second protocol massages transmitting element by the second transmission stacking opening, sends the 3rd to the adjacent stacks link management means and piles up protocol massages, and the described the 3rd piles up protocol massages comprises that second sends the sign of stacking opening; The second response message receiving element, be used to receive the adjacent stacks link management means according to the 3rd pile up that protocol massages sends the 3rd pile up response message; The 3rd information updating unit is used for piling up response message according to the 3rd and upgrades the stack port information of piling up neighbor table; The 3rd link determining unit is used for determining that second link that piles up that sends the stacking opening place is the data transmission link that piles up between link management means and the adjacent stacks link management means.
Further, the second link determination module also comprises: the 3rd protocol massages receiving element, the 4th information updating unit and the 4th link determining unit are used for redefining in another case data transmission link.
Particularly, the 3rd protocol massages receiving element, be used for according to the MAC Address and the stack port information of piling up neighbor table, receive the 3rd of adjacent stacks link management means transmission and pile up protocol massages, the described the 3rd piles up protocol massages comprises that second sends the sign of stacking opening; The described second transmission stacking opening is to be determined according to MAC Address and stack port information that it piles up in the neighbor table by the adjacent stacks link management means; The 4th information updating unit, be used for piling up protocol massages according to the 3rd, the stack port information in the neighbor table is piled up in renewal, and pile up protocol massages according to the 3rd and send the 3rd to the adjacent stacks link management means and pile up response message, determine described data transmission link for the adjacent stacks link management means; The 4th link determining unit is used for determining that second link that piles up that sends the stacking opening place is the data transmission link that piles up between link management means and the adjacent stacks link management means.
Need explanation at this, the first link determination module and the second link determination module can comprise above-mentioned two kinds of structures simultaneously, also can include only a kind of structure, specifically can decide according to the method flow that will implement and the predefined size that each piles up the MAC Address of link management means.
Based on the introduction of the above-mentioned specific implementation of piling up link management means to present embodiment as can be known: the link management means of piling up of present embodiment also can be used for carrying out the flow process of piling up link management method that the embodiment of the invention provides.Technical solution of the present invention is piled up link by set up many between the adjacent stacks link management means, and management by piling up link to many, can pile up new data transmission link of conduct of link selection at the data transmission link Shi Congqi that breaks down, compare with the single link that piles up in the prior art, can guarantee the stability of pile system operation, effectively reduce and pile up the probability that link failure causes the pile system division, improve the reliability of the network operation.
Embodiment nine
The embodiment of the invention nine provides a kind of network equipment, and this network equipment comprises and piles up link management means.Wherein, the network equipment of present embodiment can be the stacked switch in the pile system, also can be other equipment that can realize the technology of piling up, for example routers.Wherein, pile up link management means and can adopt the link management means of piling up that the above embodiment of the present invention provides, its concrete structure and operation principle do not repeat them here, and please see the description of above embodiment for details.
The network equipment that present embodiment provides comprises the link management means of piling up provided by the invention, also can carry out the flow process of piling up link management method that the embodiment of the invention provides.When the network equipment that adopts present embodiment is set up pile system, can guarantee the stability of pile system operation, and can effectively reduce and pile up the probability that link failure causes pile system appearance division, improve the reliability of the network operation.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be finished by the relevant hardware of program command, aforesaid program can be stored in the computer read/write memory medium, this program is carried out the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (17)
1. one kind is piled up link management method, it is characterized in that, comprising:
In stacked switch and described stacked switch place pile system, set up two or more between the adjacent stacks switch and pile up link;
Described stacked switch piles up link according to described two or more, sets up and piles up neighbor table, and described piling up comprises described media access control address and stack port information of piling up the link correspondence in the neighbor table;
Described stacked switch is according to described media access control address and stack port information of piling up in the neighbor table, piles up from described two or more and determines one link to pile up link be data transmission link between described stacked switch and the described adjacent stacks switch.
2. the link management method that piles up according to claim 1 is characterized in that, also comprises:
Described stacked switch detects the state of first stacking opening of described data transmission link;
When described stacked switch is off-state in first stacking opening that detects described data transmission link, according to described media access control address and stack port information of piling up in the neighbor table, pile up the link from described two or more and to determine that another piles up link is data transmission link between described stacked switch and the described adjacent stacks switch.
3. the link management method that piles up according to claim 1 and 2 is characterized in that described stacked switch piles up link according to described two or more, and foundation is piled up neighbor table and comprised:
Described stacked switch receive described adjacent stacks switch by described two or more pile up that link sends first pile up protocol massages, described first piles up protocol massages comprises that the media access control address of described adjacent stacks switch and described two or more pile up the sign of second stacking opening of link;
Described stacked switch piles up protocol massages and receives described first first stacking opening of piling up protocol massages according to described first, sets up the described neighbor table of piling up.
4. the link management method that piles up according to claim 3 is characterized in that, also comprises:
Described stacked switch piles up the described adjacent stacks switch transmission first of chain road direction by described two or more and piles up protocol massages, sets up the neighbor table of piling up of described adjacent stacks switch for described adjacent stacks switch; Described first piles up protocol massages comprises that the media access control address of described stacked switch and described two or more pile up the sign of first stacking opening of link.
5. the link management method that piles up according to claim 1 and 2, it is characterized in that, described stacked switch is according to described media access control address and stack port information of piling up in the neighbor table, piles up from described two or more and determines one link to pile up link be that data transmission link between described stacked switch and the described adjacent stacks switch comprises:
Described stacked switch determines that according to described media access control address and stack port information of piling up in the neighbor table first sends stacking opening;
Described stacked switch sends stacking opening by described first, sends second to described adjacent stacks switch and piles up protocol massages, and described second piles up protocol massages comprises that described first sends the sign of stacking opening;
Described stacked switch receive described adjacent stacks switch according to described second pile up that protocol massages sends second pile up response message, and pile up response message according to described second and upgrade described stack port information of piling up in the neighbor table;
Described stacked switch determines that described first link that piles up that sends the stacking opening place is a data transmission link between described stacked switch and the described adjacent stacks switch.
6. the link management method that piles up according to claim 1 and 2, it is characterized in that, described stacked switch is according to described media access control address and stack port information of piling up in the neighbor table, piles up from described two or more and determines one link to pile up link be that data transmission link between described stacked switch and the described adjacent stacks switch comprises:
Described stacked switch receives second of described adjacent stacks switch transmission and piles up protocol massages according to described media access control address and stack port information of piling up in the neighbor table, and described second piles up protocol massages comprises that first sends the sign of stacking opening; The described first transmission stacking opening is to be determined according to the media access control address and the stack port information of piling up in the neighbor table of described adjacent stacks switch by described adjacent stacks switch;
Described stacked switch piles up protocol massages according to described second, upgrade described stack port information of piling up in the neighbor table, and pile up protocol massages according to described second and pile up response message to described adjacent stacks switch transmission second, determine described data transmission link for described adjacent stacks switch;
Described stacked switch determines that described first link that piles up that sends the stacking opening place is a data transmission link between described stacked switch and the described adjacent stacks switch.
7. the link management method that piles up according to claim 2, it is characterized in that, described stacked switch is according to described media access control address and stack port information of piling up in the neighbor table, piles up from described two or more and determines link that another piles up link is that data transmission link between described stacked switch and the described adjacent stacks switch comprises:
Described stacked switch determines that according to described media access control address and stack port information of piling up in the neighbor table second sends stacking opening;
Described stacked switch sends stacking opening by described second, sends the 3rd to described adjacent stacks switch and piles up protocol massages, and the described the 3rd piles up protocol massages comprises that described second sends the sign of stacking opening;
Described stacked switch receive described adjacent stacks switch according to the described the 3rd pile up that protocol massages sends the 3rd pile up response message, and pile up response message according to the described the 3rd and upgrade described stack port information of piling up in the neighbor table;
Described stacked switch determines that described second link that piles up that sends the stacking opening place is a data transmission link between described stacked switch and the described adjacent stacks switch.
8. the link management method that piles up according to claim 2, it is characterized in that, described stacked switch is according to described media access control address and stack port information of piling up in the neighbor table, piles up from described two or more and determines link that another piles up link is that data transmission link between described stacked switch and the described adjacent stacks switch comprises:
Described stacked switch receives the 3rd of described adjacent stacks switch transmission and piles up protocol massages according to described media access control address and stack port information of piling up in the neighbor table, and the described the 3rd piles up protocol massages comprises that second sends the sign of stacking opening; The described second transmission stacking opening is to be determined according to the media access control address and the stack port information of piling up in the neighbor table of described adjacent stacks switch by described adjacent stacks switch;
Described stacked switch piles up protocol massages according to the described the 3rd, upgrade described stack port information of piling up in the neighbor table, and pile up protocol massages according to the described the 3rd and send the 3rd to described adjacent stacks switch and pile up response message, determine described data transmission link for described adjacent stacks switch;
Described stacked switch determines that described second link that piles up that sends the stacking opening place is a data transmission link between described stacked switch and the described adjacent stacks switch.
9. one kind is piled up link management means, it is characterized in that, comprising:
The link establishment module is used for piling up link management means and described piling up set up two or more between the pile system adjacent stacks link management means of link management means place and piled up link described;
Neighbor table is set up module, is used for piling up link according to described two or more, sets up and piles up neighbor table, and described piling up comprises described media access control address and stack port information of piling up the link correspondence in the neighbor table;
The first link determination module, be used for the media access control address and the stack port information of piling up neighbor table, pile up from described two or more and determine one link to pile up link be the described data transmission link that piles up between link management means and the described adjacent stacks link management means according to described.
10. the link management means of piling up according to claim 9 is characterized in that, also comprises:
State detection module is used to detect the state of first stacking opening of described data transmission link;
The second link determination module, be used for when first stacking opening that described detection module detects described data transmission link is off-state, according to described media access control address and stack port information of piling up in the neighbor table, pile up the link from described two or more and to determine that another piles up link is the described data transmission link that piles up between link management means and the described adjacent stacks link management means.
11., it is characterized in that described neighbor table is set up module and comprised according to claim 9 or the 10 described link management means of piling up:
The first protocol massages receiving element, be used to receive described adjacent stacks link management means by described two or more pile up that link sends first pile up protocol massages, described first piles up protocol massages comprises that the media access control address of described adjacent stacks link management means and described two or more pile up the sign of second stacking opening of link;
Neighbor table is set up the unit, is used for piling up protocol massages and receiving described first first stacking opening of piling up protocol massages according to described first, sets up the described neighbor table of piling up.
12. the link management means of piling up according to claim 11 is characterized in that, also comprises:
The message sending module, be used for piling up the described adjacent stacks link management means transmission first of chain road direction and pile up protocol massages, set up the neighbor table of piling up of described adjacent stacks link management means for described adjacent stacks link management means by two or more; Described first piles up protocol massages comprises that described media access control address and described two or more that piles up link management means piles up the sign of first stacking opening of link.
13., it is characterized in that the described first link determination module comprises according to claim 9 or the 10 described link management means of piling up:
The first stacking opening determining unit is used for the media access control address and the stack port information of piling up neighbor table according to described, determines that first sends stacking opening;
The first protocol massages transmitting element is used for sending second to described adjacent stacks link management means and piling up protocol massages by the described first transmission stacking opening, and described second piles up protocol massages comprises that described first sends the sign of stacking opening;
The first response message receiving element, be used to receive described adjacent stacks link management means according to described second pile up that protocol massages sends second pile up response message;
First information updating block is used for piling up response message according to described second and upgrades described stack port information of piling up neighbor table;
The first link determining unit is used for determining that described first link that piles up that sends the stacking opening place is the described data transmission link that piles up between link management means and the described adjacent stacks link management means.
14., it is characterized in that the described first link determination module comprises according to claim 9 or the 10 described link management means of piling up:
The second protocol massages receiving element, be used for the media access control address and the stack port information of piling up neighbor table according to described, receive second of described adjacent stacks link management means transmission and pile up protocol massages, described second piles up protocol massages comprises that first sends the sign of stacking opening; The described first transmission stacking opening is to be determined according to the media access control address and the stack port information of piling up in the neighbor table of described adjacent stacks link management means by described adjacent stacks link management means;
Second information updating unit, be used for piling up protocol massages according to described second, upgrade described stack port information of piling up in the neighbor table, and pile up protocol massages according to described second and pile up response message to described adjacent stacks link management means transmission second, determine described data transmission link for described adjacent stacks link management means;
The second link determining unit is used for determining that described first link that piles up that sends the stacking opening place is the described data transmission link that piles up between link management means and the described adjacent stacks link management means.
15. the link management means of piling up according to claim 10 is characterized in that, the described second link determination module comprises:
The second stacking opening determining unit is used for the media access control address and the stack port information of piling up neighbor table according to described, determines that second sends stacking opening;
The second protocol massages transmitting element by the described second transmission stacking opening, sends the 3rd to described adjacent stacks link management means and piles up protocol massages, and the described the 3rd piles up protocol massages comprises that described second sends the sign of stacking opening;
The second response message receiving element, be used to receive described adjacent stacks link management means according to the described the 3rd pile up that protocol massages sends the 3rd pile up response message;
The 3rd information updating unit is used for piling up response message according to the described the 3rd and upgrades described stack port information of piling up neighbor table;
The 3rd link determining unit is used for determining that described second link that piles up that sends the stacking opening place is the described data transmission link that piles up between link management means and the described adjacent stacks link management means.
16. the link management means of piling up according to claim 10 is characterized in that, the described second link determination module comprises:
The 3rd protocol massages receiving element, be used for the media access control address and the stack port information of piling up neighbor table according to described, receive the 3rd of described adjacent stacks link management means transmission and pile up protocol massages, the described the 3rd piles up protocol massages comprises that second sends the sign of stacking opening; The described second transmission stacking opening is to be determined according to the media access control address and the stack port information of piling up in the neighbor table of described adjacent stacks link management means by described adjacent stacks link management means;
The 4th information updating unit, be used for piling up protocol massages according to the described the 3rd, upgrade described stack port information of piling up in the neighbor table, and pile up protocol massages according to the described the 3rd and send the 3rd to described adjacent stacks link management means and pile up response message, determine described data transmission link for described adjacent stacks link management means;
The 4th link determining unit is used for determining that described second link that piles up that sends the stacking opening place is the described data transmission link that piles up between link management means and the described adjacent stacks link management means.
17. one kind comprises each described network equipment that piles up link management means of claim 9-16.
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| CN2010105447441A CN102006184B (en) | 2010-11-09 | 2010-11-09 | Management method, device and network device of stack link |
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