CN102457402B - Method for detecting multiple active equipment conflict and apparatus thereof - Google Patents
Method for detecting multiple active equipment conflict and apparatus thereof Download PDFInfo
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- CN102457402B CN102457402B CN201010512984.3A CN201010512984A CN102457402B CN 102457402 B CN102457402 B CN 102457402B CN 201010512984 A CN201010512984 A CN 201010512984A CN 102457402 B CN102457402 B CN 102457402B
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Abstract
The invention provides a method for detecting multiple active equipment conflict and an apparatus thereof which are used for an intelligent resilient framework (IRF) system comprising at least two member devices. The method comprises the following steps: when connection information or state information in the IRF system is changed, a member device sends a neighbor announcement (NA) message carrying an IRF system identification and active equipment identification which are recorded at local through broadcast; when a member device which receives the NA message determines that IRF system identification carried in the NA massage is consistent with the IRF system identification which is recorded at local and active equipment identification carried in the NA message has higher vote priority than the active equipment identification recorded at local, the member device determines that a multiple active equipment conflict happens in the IRF system. According to the method and the apparatus in the invention, when faults such as stacking link broken happen in the IRF system, an appeared multiple active equipment conflict in the IRF system is detected, and a prerequisite condition is provided for reasonable conflict processing.
Description
Technical field
The present invention relates to network communications technology field, particularly a kind of method and apparatus that detects multi-primary apparatus conflict.
Background technology
Intelligent elastic framework (IRF, Intelligent Resilient Framework) system, by cable, multiple devices to be coupled together and form a logical device, wherein the each equipment in IRF system is commonly referred to member device, and the link between each member device is called stacking link.In IRF system, can elect primary (Active) equipment, miscellaneous equipment is as (Slave) for subsequent use equipment.By the internal mechanism of IRF system, Active equipment can send the notification packet that carries equipment of itself information (for example Active device id) in IRF internal system, each member device can be at local record Active facility information, in addition, in each member device, also can record IRF system identifier, the IRF system identifier of the each member device record in same IRF system is identical.
If while there is the fracture of stacking link in IRF system, may cause and in IRF system, occur multiple Active equipment.As shown in Figure 1, under IPv6 network environment, suppose to comprise in IRF system two member devices: member device 1 and member device 2.Port one and port 2 are three layer interfaces, and configure respectively ipv6 address, or port one and port 2 be two layer interfaces, and add certain Vlan, create corresponding Vlan virtual interface, configure ipv6 address on Vlan virtual interface.Before stacking link fracture, member device 1 is Active equipment, when after the stacking link fracture between member device 1 and member device 2,2 of member devices can re-elect certainly as Active equipment, because member device 1 is now also in Active state, this may cause network normally to work.For example, two have identical virtual interface in Active equipment, and configure same IP address, cause IP address conflict.
Summary of the invention
In view of this, the invention provides a kind of method and apparatus that detects multi-primary apparatus conflict, for detection of the problem that occurs multi-Active device conflict in IRF system, to provide precondition for reasonably conflicting with processing.
Detect a method for multi-Active device conflict, be applied to the intelligent elastic framework IRF system that comprises at least two member devices, the method comprises:
A, member device determine that when the link information of described IRF system or state information change, broadcast transmission is carried the IRF system banner of local record and the neighbor advertisement NA message of Active device identification;
B, the member device that receives described NA message determine that the IRF system banner carrying in NA message is consistent with the IRF system banner of local record, and when the Active device identification of carrying in NA message has higher election priority than the Active device identification of local record, determine in described IRF system multi-Active device conflict occurs.
Detect a device for multi-Active device conflict, this device is arranged in the member device of IRF system, and this device comprises: notification packet transmitting element, notification packet receiving element and collision detection unit;
Described notification packet transmitting element, when determining that at described member device the link information of described IRF system or state information change, broadcast transmission is carried the IRF system banner of this member device local record and the neighbor advertisement NA message of Active device identification;
Described notification packet receiving element, for receiving NA message, and offers described collision detection unit;
Described collision detection unit, the IRF system banner carrying for definite NA message receiving is consistent with the IRF system banner of this member device local record, and when the Active device identification of carrying in the NA message receiving has higher election priority than the Active device identification of local record, determine in described IRF system multi-Active device conflict occurs.
As can be seen from the above technical solutions, the invention provides a kind of concrete collision detection mechanism for IRF system, can there is the faults such as stacking link fracture in such as IRF system time, detect the multi-Active device conflict occurring in IRF system, so that take in time rational contention resolution, avoid network normally to work.
Brief description of the drawings
Fig. 1 is the stacking link multi-Active conflict schematic diagram causing that ruptures in IRF system;
Fig. 2 is main method flow chart provided by the invention;
Fig. 3 is the form schematic diagram of the NA message after expansion;
Fig. 4 is the process chart of member device provided by the invention to NA message;
Fig. 5 is an instance graph provided by the invention;
Fig. 6 apparatus structure schematic diagram provided by the invention.
Embodiment
In order to make the object, technical solutions and advantages of the present invention clearer, describe the present invention below in conjunction with the drawings and specific embodiments.
Main method provided by the invention can as shown in Figure 2, mainly comprise the following steps:
When in step 201:IRF system, the link information of member device or state information change, this member device broadcast transmission is carried the IRF system banner of local record and neighbor advertisement (NA) message of Active device identification.
Step 202: the member device that receives NA message determines that the IRF system banner carrying in NA message is consistent with the IRF system banner of local record, and when the Active device identification of carrying in NA message has higher election priority than the Active device identification of local record, determine multi-Active device conflict occurs in IRF system.
In the time determining generation multi-Active device conflict, the Active device identification that can upgrade local record is the Active device identification of carrying in NA message, if self, in Active state, exit Active state.
In the method providing in the invention described above, use the neighbours in IPv6 protocol stack to find (ND) agreement, NA message is expanded, increase a scaling option: IRF system banner option (IRF SystemID), as shown in Figure 3.Fig. 3 is the form schematic diagram of the NA message after expansion, and type (Type) field is used to indicate type of message, for example, can adopt 254 mark NA messages; Length (Length) field is used to indicate option, taking 8 bytes as unit; IRF System id field is used for carrying IRF system banner and Active device identification.Wherein, IRF system banner can comprise: IRF territory ID, can further include systematic name (sysname); Active device identification can be the member device ID of Active equipment.
In above-mentioned steps 201, in IRF system, member device sends and can comprise one or the combination in any in following situation opportunity of NA message of carrying IRF system banner and Active device identification:
1), in the time that member device switches to Active state by Slave state, initiatively broadcast transmission is carried the IRF system banner of local record and the NA message of Active device identification.For example, in Fig. 1, member device 2, because stacking link fracture switches to Active state from Slave state, can broadcast transmission carry the NA message of IRF system banner and Active device identification (the Active device identification that now member device 2 sends and the Active device identification of local record have been all the ID of member device 2).
2) when the Link State connecting when member device changes, the NA message of broadcast transmission IRF system banner and Active device identification.For example, when the stacking link that member device connects ruptures, can send above-mentioned NA message, the stacking link fracture that in Fig. 1, member device 1 connects, can send the NA message that carries IRF system banner and Active device identification.
3) when the port status of member device changes, for example become startup (Up) state, broadcast transmission is carried the NA message of IRF system banner and Active device identification.
4), in the time that the Port IP address of member device changes, broadcast transmission is carried the NA message of IRF system banner and Active device identification.
5), when member device receives after the NA message that carries IRF system banner and Active device identification, send and carry the IRF system banner of local record and the NA message of Active device identification.
Below member device in step 202 is described in detail the processing procedure of NA message.Fig. 4 is the process chart of member device to NA message, and in this embodiment, to carry sysname, IRF territory ID and Active device id in NA message as example, as shown in Figure 4, processing procedure can specifically comprise:
Step 401: member device receives after NA message, the sysname carrying in NA message and IRF territory ID are compared with sysname and the IRF territory ID of this member device local record respectively, if exist one inconsistent, abandon this NA message, finish handling process to NA message; If all consistent, execution step 402.
Conventionally IRF territory ID is unique in network, may there is not unique situation in sysname, only, in the case of sysname and IRF territory ID are all consistent with the sysname of local record and IRF territory ID, the IRF system of this NA message from this member device place is described.If NA message is not the IRF system from member device place, do not need this NA message to process, directly abandon; If NA message is from the IRF system at member device place, this NA message can be for detection of the problem that whether has multi-Active conflict in this IRF system, continues to carry out following steps.
Step 402: judge whether the election priority of the Active device id carrying in NA message is greater than the election priority of the Active device id of local record, if not, abandon this NA message, finish the handling process to NA message; If so, execution step 403.
In IRF system, each member device is to carry out the election of Active equipment according to election priority, can adopt Active device id corresponding election priority mode from low to high from big to small, while comparing so in this step, can judge whether the Active device id carrying in NA message is less than the Active device id of local record, if so, illustrate that the election priority of the Active device id carrying in NA message is greater than the election priority of the Active device id of local record.
Step 403: determine in IRF system and occur multi-Active device conflict, the Active device id that upgrades local record is the Active device id carrying in NA message, if self, in Active state, exit Active state.
The election priority of the Active device id carrying in NA message is greater than the election priority of the Active device id of local record, therefore, the member device that this NA message of transmission is described should be Active equipment, and the Active device id of local record should be consistent thereupon.If receive that the member device self of this NA message is in Active state, explanation with in this IRF system, there is multi-Active and conflict, and the election priority of this member device is lower, exits Active state.
In exiting Active state, member device can be closed (Shutdown) service port except user configured reserved port.Can keep reserved port Up.For example, can retain all two layers of port Up.Port is by after Shutdown, and the relevant configuration on this port also lost efficacy, the such as configuration of IP address etc.So just can avoid occurring the problems such as IP address conflict.
Member device can enter recovery state after exiting Active state, member device in recovery state can not participate in the election of Active equipment until fault recovery backed off after random recovery state, thereby ensures that this member device can not cause multi-Active device conflict in the time of recovery state again.
Still taking framework shown in Fig. 1 as example, said method is illustrated below.In the time that the stacking link between member device 1 and member device 2 ruptures, member device 2 self is elected as Active, and the Active device id of local record is the ID of member device 2.Because state switches to Active from Slave, therefore, member device 2 broadcast transmissions are carried the NA message of the Active device id (being the ID of member device 2) of IRF system banner and local record.The Link State connecting due to member device 1 changes, and becomes Down from Up, therefore, also can broadcast transmission carries the NA message of the Active device id (being the ID of member device 1) of IRF system banner and local record.
Member device 2 receives after the NA message that member device 1 sends, first judge the consistent of the IRF system banner that carries in NA message and local record, further judge the Active device id carrying in NA message and there is the election priority higher than the Active device id of local record, therefore, in definite this IRF system of member device 2, there is multi-Active device conflict.Member device 2 is updated to the Active device id of local record the Active device id carrying in NA message, i.e. the ID of member device 1, and exit Active state, close three layers of port simultaneously, if port 2 is three layers of port, close port 2, also lost efficacy immediately in the IP address on port 2.
Member device 1 receives after the NA message that member device 2 sends, first judge the consistent of the IRF system banner that carries in NA message and local record, the election priority of further judging the Active device id carrying in NA message is less than the election priority of the Active device id of local record, therefore, directly abandon this NA message, do not need to process.
Give one example again, as shown in Figure 5, suppose originally in IRF system that member device 1 is for Active state, member device 2 are in Slave state, port one is in UP state, port 2 is in Down state, if the stacking link fracture now between member device 1 and member device 2, member device 2 elections are certainly as Active state.If now make port 2 revert to UP state by the means such as manual configuration or fault recovery, can send and carry the NA message that IRF system banner and member device 2 identify by method member device 2 of the present invention, member device 1 is received after this NA message, compare by content that NA message is carried and IRF system banner and the Active device identification of local record, determine that IRF system banner is consistent, and the election priority of the Active device identification of the election priority ratio local record of the Active device identification that NA message carries is low, therefore, member device 1 keeps Active state constant, can reply simultaneously and carry the NA message that IRF system banner and member device 1 identify.Member device 2 receives and carries after the NA message that IRF system banner and member device 1 identify, compare by content that NA message is carried and IRF system banner and the Active device identification of local record, determine that IRF system banner is consistent, and the election priority of the Active device identification of the election priority ratio local record of the Active device identification that NA message carries is high, therefore, member device 2 exits Active state, so just avoid existing in IRF system the conflict of two Active equipment, increased the robustness of network.
Can successfully detect the multi-Active device conflict in IRF system by method provided by the invention as seen, to take necessary conflict processing mode, avoid network normally to work.
Be more than the detailed description that method provided by the present invention is carried out, below device provided by the present invention be described in detail.This device can be arranged in the member device of IRF system, and as shown in Figure 6, this device can comprise: notification packet transmitting element 600, notification packet receiving element 610 and collision detection unit 620.
Notification packet transmitting element 600, when determining that at member device the link information of IRF system or state information change, broadcast transmission is carried the IRF system banner of this member device local record and the neighbor advertisement NA message of Active device identification.
Notification packet receiving element 610, for receiving NA message, and offers collision detection unit 620.
Collision detection unit 620, the IRF system banner carrying for definite NA message receiving is consistent with the IRF system banner of this member device local record, and when the Active device identification of carrying in the NA message receiving has higher election priority than the Active device identification of local record, determine multi-Active device conflict occurs in IRF system.
Wherein, the link information of above-mentioned definite IRF system or state information change and can specifically comprise one or the combination in any in following situation:
Member device switches to Active state by Slave state for subsequent use; Or,
The Link State that member device connects changes; Or,
The port status of member device changes; Or,
The Port IP address of member device changes; Or,
Member device receives the NA message that carries IRF system banner and Active device identification that other member device sends.
Particularly, above-mentioned collision detection unit 620 can comprise: the first judgment sub-unit 621, the second judgment sub-unit 622 and conflict determination subelement 623.
The first judgment sub-unit 621, whether consistent with the IRF system banner of this member device local record for judging the IRF system banner that the NA message that receives carries, if so, send judgement notice to the second judgment sub-unit 622; Otherwise, abandon the NA message receiving.
The second judgment sub-unit 622, be used for receiving after judgement notice, whether the Active device identification of carrying in the NA message that judgement receives has higher election priority than the Active device identification of local record, if so, sends and determines notice to conflict determination subelement 623; Otherwise, abandon the NA message receiving.
Conflict determination subelement 623, determines after notice for receiving, and determines multi-Active device conflict occurs in IRF system.
Further, this device can also comprise: conflict processing unit 630, for in the time there is multi-Active device conflict in the definite IRF system in collision detection unit 620, the Active device id that upgrades member device local record is the Active device id carrying in the NA message receiving, if this member device, in Active state, exits Active state.
In addition, conflict processing unit 630, can also be used in the time that this member device exits Active state, closes all service ports except user configured reserved port of this member device.
Can be found out by above description, the invention provides a kind of concrete collision detection mechanism for IRF system, can there is the faults such as stacking link fracture in such as IRF system time, detect the multi-Active device conflict occurring in IRF system, so that take in time rational contention resolution, avoid network normally to work.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any amendment of making, be equal to replacement, improvement etc., within all should being included in the scope of protection of the invention.
Claims (10)
1. a method for the how primary Active device conflict of detection, is applied to the intelligent elastic framework IRF system that comprises at least two member devices, it is characterized in that, the method comprises:
A, member device determine that when the link information of described IRF system or state information change, broadcast transmission is carried the IRF system banner of local record and the neighbor advertisement NA message of Active device identification;
B, the member device that receives described NA message determine that the IRF system banner carrying in NA message is consistent with the IRF system banner of local record, and when the Active device identification of carrying in NA message has higher election priority than the Active device identification of local record, determine in described IRF system multi-Active device conflict occurs.
2. method according to claim 1, is characterized in that, member device is determined that the link information of described IRF system or state information change and comprised any or the combination in any in following situation:
Described member device switches to Active state by Slave state for subsequent use; Or,
The Link State that described member device connects changes; Or,
The port status of described member device changes; Or,
The Port IP address of described member device changes; Or,
Described member device receives the NA message that carries IRF system banner and Active device identification that other member device sends.
3. method according to claim 1, is characterized in that, described step B specifically comprises:
B1, the member device that receives described NA message judge that whether the IRF system banner carrying in described NA message is consistent with the IRF system banner of local record, if so, and execution step B2; Otherwise, abandon described NA message, end step B;
B2, judge whether the election priority of the Active device id carrying in described NA message is greater than the election priority of the Active device id of local record, if so, determine in described IRF system multi-Active device conflict occurs; Otherwise, abandon described NA message.
4. according to the method described in the arbitrary claim of claims 1 to 3, it is characterized in that, in definite described IRF system, occur, after multi-Active device conflict, also to comprise:
The Active device id that upgrades local record is the Active device id carrying in described NA message, if self, in Active state, exit Active state.
5. method according to claim 4, is characterized in that, in exiting Active state, member device is closed all service ports except user configured reserved port.
6. a device for the how primary Active device conflict of detection, this device is arranged in the member device of IRF system, it is characterized in that, and this device comprises: notification packet transmitting element, notification packet receiving element and collision detection unit;
Described notification packet transmitting element, when determining that at described member device the link information of described IRF system or state information change, broadcast transmission is carried the IRF system banner of this member device local record and the neighbor advertisement NA message of Active device identification;
Described notification packet receiving element, for receiving NA message, and offers described collision detection unit;
Described collision detection unit, the IRF system banner carrying for definite NA message receiving is consistent with the IRF system banner of this member device local record, and when the Active device identification of carrying in the NA message receiving has higher election priority than the Active device identification of local record, determine in described IRF system multi-Active device conflict occurs.
7. device according to claim 6, is characterized in that, determines that the link information of described IRF system or state information change to comprise any or the combination in any in following situation:
Described member device switches to Active state by Slave state for subsequent use; Or,
The Link State that described member device connects changes; Or,
The port status of described member device changes; Or,
The Port IP address of described member device changes; Or,
Described member device receives the NA message that carries IRF system banner and Active device identification that other member device sends.
8. device according to claim 6, is characterized in that, described collision detection unit specifically comprises: the first judgment sub-unit, the second judgment sub-unit and conflict determination subelement;
Described the first judgment sub-unit, whether consistent with the IRF system banner of this member device local record for judging the IRF system banner that the NA message that receives carries, if so, send judgement notice to described the second judgment sub-unit; Otherwise, abandon the NA message receiving;
Described the second judgment sub-unit, be used for receiving after described judgement notice, whether the Active device identification of carrying in the NA message that judgement receives has higher election priority than the Active device identification of local record, if so, sends and determines notice to described conflict determination subelement; Otherwise, abandon the NA message receiving;
Described conflict determination subelement, for receiving after described definite notice, determines in described IRF system multi-Active device conflict occurs.
9. according to the device described in the arbitrary claim of claim 6 to 8, it is characterized in that, this device also comprises: conflict processing unit, while being used for determining that in described collision detection unit multi-Active device conflict occurs described IRF system, the Active device id carrying in the NA message that the Active device id that upgrades described member device local record receives described in being, if this member device, in Active state, exits Active state.
10. device according to claim 9, is characterized in that, described conflict processing unit, also in the time that this member device exits Active state, is closed all service ports except user configured reserved port of this member device.
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| US20150134804A1 (en) * | 2012-05-17 | 2015-05-14 | Mitsubishi Electric Corporation | Communication device and communication system |
| CN102724069B (en) * | 2012-06-14 | 2015-04-22 | 福建星网锐捷网络有限公司 | Collision detection method, device and network device of dual-master device in thermal staking system |
| CN102752214B (en) * | 2012-07-12 | 2015-12-16 | 杭州华三通信技术有限公司 | For the method and apparatus suppressing same link to conflict |
| CN102957565B (en) * | 2012-08-31 | 2015-12-09 | 杭州华三通信技术有限公司 | A kind of processing method of multi-primary apparatus conflict and device |
| CN105656645B (en) | 2014-11-12 | 2019-08-06 | 新华三技术有限公司 | The decision-making technique and device of the troubleshooting of stacking system |
| CN104639399B (en) * | 2015-02-03 | 2018-10-09 | 新华三技术有限公司 | More primary time server detection methods and device |
| CN106657355B (en) * | 2016-12-29 | 2020-10-16 | 北京华为数字技术有限公司 | Cluster management method and device |
| CN109756383B (en) * | 2019-02-28 | 2022-07-01 | 新华三技术有限公司 | Election method and device of conflict stacking system |
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Address after: 310052 Binjiang District Changhe Road, Zhejiang, China, No. 466, No. Patentee after: Xinhua three Technology Co., Ltd. Address before: 310053 Hangzhou hi tech Industrial Development Zone, Zhejiang province science and Technology Industrial Park, No. 310 and No. six road, HUAWEI, Hangzhou production base Patentee before: Huasan Communication Technology Co., Ltd. |