CN102104513A - Stack establishment method, network equipment and stacking system - Google Patents
Stack establishment method, network equipment and stacking system Download PDFInfo
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- CN102104513A CN102104513A CN2011100765156A CN201110076515A CN102104513A CN 102104513 A CN102104513 A CN 102104513A CN 2011100765156 A CN2011100765156 A CN 2011100765156A CN 201110076515 A CN201110076515 A CN 201110076515A CN 102104513 A CN102104513 A CN 102104513A
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Abstract
The invention discloses a stack establishment method, network equipment and a stacking system. The method comprises the following steps that: in a topology finding stage, each piece of member equipment in the stack learns about topology information of all pieces of member equipment; and in a role election stage, if main equipment elected from all the member equipment determines that the total amount of the member equipment in the current stack exceeds a set specification, the main equipment determines slave equipment to be cut and announces all the other slave equipment; when each piece of slave equipment determines that the slave equipment is not the one to be cut, the topology information of the corresponding slave equipment is deleted according to the announcement; when each piece of slave equipment determines that the slave equipment is the one to be cut, the slave equipment exits from the topology of the stack; and the main equipment and the slave equipment which is not cut finish topological convergence according to the cut topology. By the method, the problem that the topological convergence cannot be normally carried out if the number of members exceeds the preset specification during stack establishment is solved.
Description
Technical field
The present invention relates to network communication field, relate in particular to a kind of method for building up, the network equipment and pile system of piling up.
Background technology
" pile up " in the prior art and just be meant multiple devices are linked together by stacking opening, form one " combination plant ".The user manages this " combination plant ", just can realize all devices in piling up is managed.
Single device all in the exchange piling topology are called member device, and member device is divided into two kinds of roles according to the function difference:
A kind of is main equipment: member device a kind of, to elect by the role, and it is in charge of whole piling up.One is piled up middle synchronization and can only have a member device to become main equipment.
Another kind is a slave unit: member device a kind of, it is under the jurisdiction of main equipment, as the alternate device operation of this equipment.Except main equipment, miscellaneous equipment all is a slave unit in piling up.May there be many slave units in piling up.
In general, existing piling up set up process need through two stages: Topology Discovery stage and role elect the stage.
In the Topology Discovery stage, stack equipment is learnt the topology information of other members in the topology to collect the whole topological relation that piles up by mutual hello packet.The Topology Discovery stage generally terminates by dual mode: a kind of is that Topology Discovery stage timer is set, and when timer expires, the Topology Discovery stage finishes; Another is the specification of number of members that topology is set, when the stack equipment discovery learning to number of members when having reached the specification of setting, promptly stop Topology Discovery.
Elect the stage the role, stack equipment elects the most satisfactory member as main equipment according to certain rule from the topological member who learns.And the member who is chosen as main equipment generally can announce the convergence message to all topological members, after receiving the affirmation message that each slave unit forms of broadcasting is returned, finish topological convergence, simultaneously, each slave unit has also been finished topological convergence, so far, member devices all in the topology are all collected complete topology information, have finished topological convergence.
In the above topology discovery stage, when occurring surpassing the member who sets specification (upper limit of each member device total quantity) in the topology, if promptly stop Topology Discovery according to prior art, then be easy to cause the inconsistent situation of topology information that each member learns in the topology according to the specification of setting.Such as, totally 10 member devices (equipment 1～equipment 10) in the ring topology that piles up as shown in Figure 1, and this specification of piling up setting is 8, will cause other 7 members' that all can only learn on every equipment relevant information so according to existing topology discovery method, so other members' that learn on every equipment information have 8 kinds may, the topology information of learning such as member 1 may be set { { 1,2,3,4,5,6,7,8}, { 10,1,2,3,4,5,6,7}, { 9,10,1,2,3,4,5,6}, { 8,9,10,1,2,3,4,5}, { 7,8,9,10,1,2,3,4}, { 6,7,8,9,10,1,2,3}, { 5,6,7,8,9,10,1,2}, { 4,5,6,7,8,9,10, among the 1}} any one, like this, the topology information that each member device is finally collected all is incomplete, the topology that all members learnt of whole topology constitutes and is difficult to consistently, topology can't normally restrain like this.
Summary of the invention
A kind of method for building up, the network equipment and pile system of piling up that the embodiment of the invention provides is in order to solve the existing problem that can't normally carry out topological convergence when if existence surpasses the member who sets specification in the process of foundation of piling up.
The embodiment of the invention provides piles up method for building up, comprising:
In the Topology Discovery stage, the topology information of all member devices during each member device study is piled up in piling up;
Elect the stage the role, the main equipment that election is come out from each member device is judged when the member device total quantity exceeds the specification of setting in current the piling up, and determines the slave unit that needs cutting and also announces to all slave units;
Each slave unit determines it self is not when needing the slave unit of cutting, according to the topology information of the corresponding slave unit of described announcement deletion; Determining to withdraw from described topology of piling up from when needing the slave unit of cutting;
Described main equipment and do not finished topological convergence by the topology of each slave unit of cutting after according to cutting.
One of network equipment that the embodiment of the invention provides comprises:
Unit was used in the Topology Discovery stage, the topology information of all member devices during study is piled up;
The election unit, be used for electing the stage the role, with pile up in other member devices elect a member device as main equipment;
Determining unit is used for electing the stage the role, is elected as when the described network equipment under the situation of main equipment, judges when the member device total quantity exceeds the specification of setting in current the piling up, and determines the slave unit that needs cutting;
Notification unit is used for and will needs the slave unit announcement of cutting to all slave units;
The topological convergence unit is used for finishing topological convergence according to the topology after the cutting when the slave unit of determining that needs cutting withdraws from described pile up topological.
Two of the network equipment that the embodiment of the invention provides comprises:
Unit was used in the Topology Discovery stage, the topology information of all member devices during study is piled up;
The election unit, be used for electing the stage the role, with pile up in other member devices elect a member device as main equipment;
Determining unit is used for electing the stage the role, is elected as when the described network equipment under the situation of main equipment, judges when the member device total quantity exceeds the specification of setting in current the piling up, and determines the slave unit that needs cutting;
Notification unit is used for and will needs the slave unit announcement of cutting to all slave units;
The topological convergence unit is used for finishing topological convergence according to the topology after the cutting when the slave unit of determining that needs cutting withdraws from described pile up topological.
The pile system that the embodiment of the invention provides comprises one of the above-mentioned network equipment and two of at least one the above-mentioned network equipment; Each network equipment connects by stacking opening in the described pile system.
The beneficial effect of the embodiment of the invention comprises:
The embodiment of the invention provides piles up method for building up, the network equipment and pile system, in the Topology Discovery stage, allow each member device ultra-specification study to pile up the topology information of middle member device so that obtain the topology information of all member devices, elect the stage the role, determine the slave unit that needs cutting and announce all slave units at main equipment, slave unit is according to this announcement deletion topology information or withdraw from topology, finished the cutting of ultra-specification slave unit, main equipment and slave unit can be finished topological convergence according to the topology after the cutting.The embodiment of the invention can be before topological convergence, if there is the problem of number of members ultra-specification, main equipment can automatically crop the member device of ultra-specification, topological structure with full specification carries out topological convergence, has the problem that can't normally carry out topological convergence when surpassing the member who sets specification if solved in piling up the process of foundation.
Description of drawings
Fig. 1 is a kind of ring topology schematic diagram that piles up in the prior art;
The flow chart that piles up method for building up that Fig. 2 provides for the embodiment of the invention;
The main equipment that Fig. 3 provides for the embodiment of the invention is determined the flow chart of the slave unit that needs cutting;
The linear topology schematic diagram that piles up that Fig. 4 provides for the embodiment of the invention;
The structural representation of one of network equipment that Fig. 5 provides for the embodiment of the invention;
Two structural representation of the network equipment that Fig. 6 provides for the embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing, a kind of embodiment of piling up method for building up, the network equipment and pile system that the embodiment of the invention is provided is described in detail.
The embodiment of the invention provides piles up method for building up, as shown in Figure 2, comprises the steps:
S201, pile up in the study of each member device pile up in the topology information of all member devices.
S202, the main equipment that election is come out from each member device are judged when the member device total quantity exceeds the specification of setting in current the piling up, and determine the slave unit that needs cutting;
S203, main equipment will need the slave unit announcement of cutting to all slave units;
S204, each slave unit determine according to described announcement whether self is the slave unit of needs cutting; If not, carry out following step S205; If carry out following step S206;
S205, according to the topology information of the corresponding slave unit of announcement deletion;
S206, withdraw from described topology;
S207, main equipment and do not finished topological convergence by the topology of each slave unit of cutting after according to cutting.
Above-mentioned steps S201 belongs to the Topology Discovery stage, and above-mentioned steps S202～S207 belongs to the role and elects the stage.
Below above-mentioned each step is described in detail.
Among the above-mentioned steps S201, need dispose its permission ultra-specification collection member device topology information in each member device in piling up in advance, allow ultra-specification to collect the configuration of member device topology information according to this then, learn this pile up in the topology information of all member devices.If for example this specification of piling up setting is 8 network equipments, if the total quantity of the member device during this piles up is 10, allow so each member study this when piling up the topology information of each member device in the topology, break through the restriction of 8 member devices, until the topology information of learning all member devices.
The specific implementation process, each member device is according to the configuration of the permission ultra-specification collection member device topology information of self preserving, the topology information of collecting each member device in the time that topological timer is set; If in the not yet due process of timer, find new member device again, new member device of then every discovery, just automatically refresh timer and learn the topology information of this new member device.
In general, if the stable topology that is connected to form, the topology information process of each member device was often finished in the time of Millisecond during each member device study was piled up, for guarantee each member device can both learn fully to pile up in the topology information of all member devices, the time of the setting of timer is long enough often, if before timer expires, found new member device again, existing member device can refresh its timer in so should topology, automatically prolong time in topology learning stage the study of the topology information of finishing this new member device to guarantee to have ample time.
In the topology learning process, find it is the topology of annular if pile up each member device, when for example learning all to learn the topology information of same member device from the left side with from the right side, can think that this topology is the annular of a sealing and the topology information of having learnt all member devices in this ring topology, even this moment, timer was not overtime, also the topology learning stage can be finished immediately.
Among the above-mentioned steps S202, main equipment is determined the slave unit that needs cutting, and detailed process flow chart as shown in Figure 3 comprises:
S301, main equipment are determined the shape of the topology that this piles up;
S302, main equipment need to determine the slave unit of cutting;
S303, main equipment judge whether also to exist the slave unit that needs cutting according to this specification of piling up setting; If turn to execution in step S302; If not, carry out following step S304;
S304, process ends.
In above-mentioned steps S301, main equipment is judged and can be determined the shape of piling up according to following method, if all member devices in the unidirectional traversal topology of self one of them stacking opening are returned from self another one stacking opening at last, can judge that then this topology of piling up is a ring topology.It except that this situation linear topology.
In above-mentioned steps S302, main equipment is determined the slave unit of needs cutting according to following rule:
A) when determine current topology be shaped as ring topology the time, determine apart from self jumping figure slave unit farthest to be the slave unit that needs cutting;
B) when determine current topology be shaped as linear topology the time, determine apart from self jumping figure farthest and for the slave unit at topological edge be the slave unit that needs cutting.
In the ring topology as shown in Figure 1, if equipment 1 is main equipment, equipment 6 is apart from its jumping figure slave unit farthest so, promptly needs the slave unit of cutting.
In the linear topology as shown in Figure 4, if equipment 1 is main equipment, equipment 7 is apart from its jumping figure farthest and be positioned at the member device of a topological end so, promptly needs the slave unit of cutting.
If crop after the slave unit of this time determining, the total quantity of main equipment and slave unit still is the words of ultra-specification in this topology, can determine that according to the rule continuation of above-mentioned setting the next one needs the slave unit of cutting once more, because ring topology is through after reducing, can change linear topology into, so if ring topology, when determining once more to need the slave unit of cutting, establish rules really according to linear topology and then to go to select to get final product.
Why need to crop slave unit apart from main equipment ultra-specification farthest, be because the time-delay of network exchange, link load etc. all with distance dependent, crop the distance slave unit of ultra-specification farthest, can guarantee to be retained in the optimum that is combined as of each member device in the topology.
When determining to need the slave unit of cutting, if main equipment is when determining quantity apart from self jumping figure slave unit farthest greater than 1, preferably wherein the slave unit of the poor-performing (or the poorest) or the network port less (or minimum) is the slave unit that needs cutting.
Step S203 in the flow process shown in Figure 2, main equipment is announced the slave unit that needs cutting that it is determined by issue topological convergence message.In the topological convergence message, carry the relevant information of several slave units that need be cropped.For the announcement that guarantees to send out can both be received by slave unit, before the main equipment topological convergence, main equipment can periodically send the topological convergence message.
Other slave unit is received after the convergence message, then leaves this topology if find from by the row of the slave unit of cutting.Specifically by stop and topology in exchange hello packet between other member devices, stop the mode that the message that other member devices send is handled is withdrawed from topology.
Slave unit can be responded confirmation message with the form of broadcasting and give main equipment (other slave units also can be received this confirmation) after handling the convergence message, carries out then carrying out topological convergence according to the topology after the cutting.
When main equipment is whenever received a confirmation message, the state that corresponding slave unit is set in local topology information is the topological convergence state, when main equipment collects all members' affirmation message (all node states in the local topology all are the topological convergence state), the topology of main equipment after according to cutting carried out topological convergence.
Above-mentioned steps S201 and S207 be finish in Topology Discovery stage and role's election stage after, if main equipment or slave unit receive the hello packet and the current specification that reaches setting of piling up of topological external equipment, refuse the topology after this equipment adds cutting so, can avoid the topology of full specification to increase new member device more like this.
Based on same inventive concept, the embodiment of the invention also provides corresponding network device and pile system, because the principle that this network equipment and pile system are dealt with problems is to aforementioned a kind of to pile up method for building up similar, therefore the enforcement of this network equipment and pile system can repeat part and repeat no more referring to the enforcement of preceding method.
One of network equipment that the embodiment of the invention provides as shown in Figure 5, comprising: unit 501, election unit 502, determining unit 503, notification unit 504 and topological convergence unit 505; Wherein:
The election unit 502, be used for electing the stage the role, with pile up in other member devices elect a member device as main equipment;
Determining unit 503 is used for electing the stage the role, is elected as when this network equipment under the situation of main equipment, judges when the member device total quantity exceeds the specification of setting in current the piling up, and determines the slave unit that needs cutting;
Above-mentioned unit 501, the permission ultra-specification that specifically is used for preserving according to self is collected the configuration of member device topology information, learn this pile up in the topology information of all member devices.
Further, above-mentioned unit 501 is further used for collecting according to the permission ultra-specification of self preserving the configuration of member device topology information, collects the topology information of each member device in the time that topological timer is set; And, then refresh its timer automatically and learn its topology information at new member device of every discovery.
Further, above-mentioned determining unit 503 specifically is used for the shape of current topology; Determine successively that according to following rule each needs the slave unit of cutting, until determining the slave unit that all need cutting: when determine current topology be shaped as ring topology the time, determine apart from self jumping figure slave unit farthest to be the slave unit that needs cutting; When determine current topology be shaped as linear topology the time, determine farthest and be topological edge determining unit apart from self jumping figure, be further used for when determining quantity apart from self jumping figure slave unit farthest greater than 1, preferred wherein poor-performing or the less slave unit of the network port are the slave unit that needs cutting.
Further, above-mentioned determining unit 503 also is used for when determining quantity apart from self jumping figure slave unit farthest greater than 1, and selecting wherein poor-performing or the less slave unit of the network port is the slave unit that needs cutting.
Further, above-mentioned unit 501 also is used for after finishing topological convergence according to the topology after the cutting, if receive the hello packet and the described specification that reaches setting of piling up of topological external equipment, refuses the topology after this topology external equipment adds cutting.
Two of the network equipment that the embodiment of the invention provides as shown in Figure 6, comprising: unit 601, election unit 602, announcement receiving element 603, cutting unit 604 and topological convergence unit 605; Wherein:
The election unit 602, be used for electing the stage the role, with pile up in other member devices elect a member device as main equipment;
Cutting unit 604 is used for determining according to described announcement whether self is the slave unit of needs cutting, if not, according to the topology information of the corresponding slave unit of described announcement deletion; If control the described network equipment and withdraw from described topology;
Further, above-mentioned cutting unit 604, specifically control the described network equipment and withdraw from described topology by following manner: control that the described network equipment stops and described topology in exchange hello packet between other member devices, stop the message that other member devices send is handled.
Above-mentioned two kinds of network equipments that the embodiment of the invention provides, in the specific implementation, can pass through software, hardware or way of hardware and software combination realizes, for example use application-specific integrated circuit (ASIC) or other hardware equivalents to realize, perhaps adopt the mode of software to be stored in the memory and and carry out, to realize above-mentioned various function by processor.
Above-mentioned two kinds of network equipments, during concrete enforcement, can also close and be located in the same network entity, for example this network entity can comprise unit, election unit, determining unit, notification unit, announcement receiving element, cutting unit and topological convergence unit, and this network entity can possess the various functions of above-mentioned two kinds of network equipments simultaneously.
A kind of pile system that the embodiment of the invention provides, comprise two of the above-mentioned network equipment that one of above-mentioned network equipment that a playscript with stage directions inventive embodiments provides and at least one playscript with stage directions inventive embodiments provide in this pile system, in this pile system, connect by stacking opening between each network equipment.
The embodiment of the invention provides piles up method for building up, the network equipment and pile system, in the Topology Discovery stage, allow each member device ultra-specification study to pile up the topology information of middle member device so that obtain the topology information of all member devices, elect the stage the role, determine the slave unit and the announcement that need cutting at main equipment and give all slave units, slave unit is according to this announcement deletion topology information or withdraw from topology, finished the cutting of ultra-specification slave unit, main equipment and slave unit can be finished topological convergence according to the topology after the cutting.The embodiment of the invention can be before topological convergence, if there is the problem of number of members ultra-specification, main equipment can automatically crop the member device of ultra-specification, topological structure with full specification carries out topological convergence, has the problem that can't normally carry out topological convergence when surpassing the member who sets specification if solved in piling up the process of foundation.
And, main equipment is when cropping the member device of ultra-specification, select apart from main equipment member device farthest, if there is plural such member device, preferably crop poor-performing or network port less equipment again, the topological structure that is retained in each member device composition in the topology is for optimum.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (16)
1. one kind is piled up method for building up, it is characterized in that, comprising:
In the Topology Discovery stage, the topology information of all member devices during each member device study is piled up in piling up;
Elect the stage the role, the main equipment that election is come out from each member device is judged when the member device total quantity exceeds the specification of setting in current the piling up, and determines the slave unit that needs cutting and also announces to all slave units;
Each slave unit determines it self is not when needing the slave unit of cutting, according to the topology information of the corresponding slave unit of described announcement deletion; Determining to withdraw from described topology of piling up from when needing the slave unit of cutting;
Described main equipment and do not finished topological convergence by the topology of each slave unit of cutting after according to cutting.
2. the method for claim 1 is characterized in that, the topology information of all member devices during each member device study is piled up in described the piling up comprises:
The permission ultra-specification that each member device is preserved according to self is collected the configuration of member device topology information, learn this pile up in the topology information of all member devices.
3. method as claimed in claim 2 is characterized in that, each member device is learnt the topology information of all member devices according to allowing ultra-specification to collect the configuration of member device topology information, specifically comprises:
Each member device is according to the configuration of the permission ultra-specification collection member device topology information of self preserving, the topology information of collecting each member device in the time that topological timer is set;
New member device of the every discovery of each member device then refreshes its timer automatically and learns its topology information.
4. the method for claim 1 is characterized in that, main equipment is determined the slave unit that needs cutting, specifically comprises:
Described main equipment is determined the shape of described topology of piling up;
Determine successively that according to following rule each needs the slave unit of cutting, until determining the slave unit that all need cutting:
When determine current topology be shaped as ring topology the time, determine apart from self jumping figure slave unit farthest to be the slave unit that needs cutting; When determine current topology be shaped as linear topology the time, determine apart from self jumping figure farthest and for the slave unit at topological edge be the slave unit that needs cutting.
5. method as claimed in claim 4 is characterized in that, main equipment is when determining quantity apart from self jumping figure slave unit farthest greater than 1, and selecting wherein poor-performing or the less slave unit of the network port is the slave unit that needs cutting.
6. the method for claim 1 is characterized in that, slave unit withdraws from described topology, comprising:
Slave unit stop and topology in exchange hello packet between other member devices, stop the message that other member devices send is handled.
7. as each described method of claim 2-6, it is characterized in that, also comprise:
After finishing topological convergence,, refuse the topology after this topology external equipment adds described cutting if main equipment or slave unit receive the hello packet and the described specification that reaches setting of piling up of topological external equipment according to the topology after the cutting.
8. a network equipment is characterized in that, comprising:
Unit was used in the Topology Discovery stage, the topology information of all member devices during study is piled up;
The election unit, be used for electing the stage the role, with pile up in other member devices elect a member device as main equipment;
Determining unit is used for electing the stage the role, is elected as when the described network equipment under the situation of main equipment, judges when the member device total quantity exceeds the specification of setting in current the piling up, and determines the slave unit that needs cutting;
Notification unit is used for and will needs the slave unit announcement of cutting to all slave units;
The topological convergence unit is used for finishing topological convergence according to the topology after the cutting when the slave unit of determining that needs cutting withdraws from described pile up topological.
9. the network equipment as claimed in claim 8 is characterized in that, described unit specifically is used for the configuration that permission ultra-specification that each member device preserves according to self is collected the member device topology information, learn this pile up in the topology information of all member devices.
10. the network equipment as claimed in claim 9, it is characterized in that, described unit is further used for collecting according to the permission ultra-specification of self preserving the configuration of member device topology information, collects the topology information of each member device in the time that topological timer is set; And, then refresh its timer automatically and learn its topology information at new member device of every discovery.
11. the network equipment as claimed in claim 8 is characterized in that, described determining unit specifically is used for determining the shape of current topology; Determine successively that according to following rule each needs the slave unit of cutting, until determining the slave unit that all need cutting: when determine current topology be shaped as ring topology the time, determine apart from self jumping figure slave unit farthest to be the slave unit that needs cutting; When determine current topology be shaped as linear topology the time, determine apart from self jumping figure farthest and for the slave unit at topological edge be the slave unit that needs cutting.
12. the described network equipment as claimed in claim 11, it is characterized in that, described determining unit is further used for when determining quantity apart from self jumping figure slave unit farthest greater than 1, and selecting wherein poor-performing or the less slave unit of the network port is the slave unit that needs cutting.
13. as each described network equipment of claim 8-12, it is characterized in that, described unit, also be used for after finishing topological convergence according to the topology after the cutting, if receive the hello packet and the described specification that reaches setting of piling up of topological external equipment, refuse the topology after this topology external equipment adds described cutting.
14. a network equipment is characterized in that, comprising:
Unit was used in the Topology Discovery stage, the topology information of all member devices during study is piled up;
The election unit, be used for electing the stage the role, with pile up in other member devices elect a member device as main equipment;
The announcement receiving element is used for electing the stage the role, when the described network equipment is not elected as main equipment, and the announcement of the slave unit that needs cutting that the reception main equipment sends;
The cutting unit is used for determining according to described announcement whether self is the slave unit of needs cutting, if not, according to the topology information of the corresponding slave unit of described announcement deletion; If control the described network equipment and withdraw from described topology;
The topological convergence unit is used for finishing topological convergence according to the topology after the cutting when the slave unit that needs cutting withdraws from described pile up topological.
15. the network equipment as claimed in claim 14, it is characterized in that, described cutting unit, specifically be used for controlling the described network equipment and withdraw from described topology by following manner: control that the described network equipment stops and other member devices of described topology between exchange hello packet, stop the message that other member devices send is handled.
16. a pile system is characterized in that, comprise one as each described network equipment of claim 8-13 and at least one as the claim 14 or the 15 described network equipments; Each network equipment connects by stacking opening in the described pile system.
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| CN102780582A (en) * | 2012-07-23 | 2012-11-14 | 福建星网锐捷网络有限公司 | Reset method and device for stack topology member device and network device |
| CN103036760A (en) * | 2012-12-18 | 2013-04-10 | 迈普通信技术股份有限公司 | Topology convergence method and member equipment of stacking system |
| CN107528788A (en) * | 2016-06-20 | 2017-12-29 | 新华三技术有限公司 | Realize the method and apparatus stacked automatically between the network equipment |
| CN114827003A (en) * | 2022-03-21 | 2022-07-29 | 浪潮思科网络科技有限公司 | Topology election method, device, equipment and medium of distributed system |
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