CN104796276B - A kind of link switch-over method and system - Google Patents
A kind of link switch-over method and system Download PDFInfo
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- CN104796276B CN104796276B CN201410026793.4A CN201410026793A CN104796276B CN 104796276 B CN104796276 B CN 104796276B CN 201410026793 A CN201410026793 A CN 201410026793A CN 104796276 B CN104796276 B CN 104796276B
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Abstract
The invention discloses a kind of link switch-over method and systems, for solving the problems, such as that blade host existing in the prior art will not actively switch so as to cause data-transmission interruptions when currently used link breaks down.In the program, there are main IB Switch modules and spare IB Switch module in blade host, and there is link between each IB Switch in the IB subnet where any one IB Switch module and the blade host.When the blade host determines the second link when judging that the first currently used link breaks down according to the network topology structure for predefining itself the place IB subnet；Wherein, first link is connect with the main IB Switch module in the blade host with second link；From first link switching to second link, the blade host is made to be able to use second link transmission data.
Description
Technical field
The present invention relates to information and business support technical field more particularly to a kind of link switch-over method and systems.
Background technique
Interconnection architecture（InfiniBand, abbreviation IB）Network is a kind of high broadband of open standard, high speed network interconnection skill
The purpose of art, this technology are not intended to what general networking connected, its major design is the connectivity problem for server end.Cause
This, InfiniBand technology is mainly applied to server and server, server and storage equipment（Such as storage area network
（Storage Area Network, SAN）With directly storage attachment）And between server and network（Such as local area network
（Local Area Network, LAN）, wide area network（Wide Area Network, WAN）And Internet
（Internetwork, abbreviation internet））Communication.
As shown in Figure 1, being existing IB network topology structure figure.Wherein, two network interface cards in host are connected respectively to two
On a different interchanger（I.e. there is only a links between host and each interchanger）, and the intercaste of two interchangers
Connection.Network card binding is done in host computer side, based on binding pattern-standby mode（Active-Standby mode）, when active link is sent out
When raw failure, standby link takes over the active link to break down, while becoming active mode from standby mode,
To ensure that data will not break down and Transmission in transmission process because of a certain link.With reference to Fig. 1, when 9000 corresponding
When link or network interface card break down, data transmission is just switched on 9002 corresponding links and network interface card.
Above-mentioned this network topology structure uses peripheral hardware interconnection standard to traditional（Peripheral Component
Interconnect, PCI）Host for, once currently used link breaks down, the upper joint inspection of IP agreement will be passed through
Survey mechanism notifies mainframe network to break down, therefore when host exchange breaks down, and data transmission can be switched to spare
On interchanger, when major network card or the corresponding link of major network card break down, data transmission can be switched to spare network interface card and
Corresponding chain road.
But for using blade framework（The server list of multiple cassettes is inserted in the rack cabinet of calibrated altitude
Member realizes High Availabitity and high density）Host（Referred to as blade host）For, if blade host is applied to above-mentioned tradition
Network topology structure, once currently used link breaks down, the first line of a couplet testing mechanism of IP agreement is also notified that blade master
Machine network failure, but since the hardware structure inside blade host has been different from traditional host framework, on blade
It is integrated with Host Channel Adapters（Host Channel Adapter, HCA）IB inside card, HCA card and blade host
Switch（Interconnection architecture interchanger）Module connection, and IB Switch module does not have a function of first line of a couplet testing mechanism, therefore no matter
Whether currently used link breaks down, and the connectivity port of HCA card and IB Switch module is all connection always on blade
（up）State, therefore blade host can not know network failure situation.In this case, blade host can be always to main IB
The corresponding link of Switch module sends data, cannot achieve network service from main IB Switch module and is switched to spare IB
Switch module, thus the interruption for causing data to transmit.
Summary of the invention
The embodiment of the present invention provides a kind of link switch-over method and system, to solve blade host of the existing technology
The problem of will not actively switching so as to cause data-transmission interruptions when currently used link breaks down.
The embodiment of the present invention uses following technical scheme：
A kind of link switch-over method, there are main interconnection architecture interchanger IB Switch module and spare IB in blade host
Switch module, and each IB Switch in the IB subnet where any one IB Switch module and the blade host
Between there is link, the method includes：
When the blade host according to predefine itself where IB subnet network topology structure, judge current
When the first link used breaks down, the second link is determined；Wherein, first link and second link with it is described
Main IB Switch module connection in blade host；
From first link switching to second link, so that the blade host is able to use second link and pass
Transmission of data.
Wherein, the method also includes：
When the blade host determines that the main IB Switch module for connecting first link breaks down, determine
The link being connect with the spare IB Switch module in the blade host；
From first link switching to the link connecting with the spare IB Switch module, make the blade host
It is able to use the link transmission data connecting with the spare IB Switch module.
Wherein, the link connecting with the spare IB Switch module has at least two；Then
From first link switching to the link connecting with the spare IB Switch module, make the blade host
It is able to use the link transmission data connecting with the spare IB Switch module, is specifically included：
Determine the weight for each of the links connecting with spare IB Switch module；
From first link switching to the link for the maximum weight connecting with the spare IB Switch module, make institute
State the link transmission data that blade host is able to use the maximum weight connecting with the spare IB Switch module.
Wherein, the network topology structure determines as follows：
Subnet manager SM in the IB subnet is by sending subnet detection packet to the IB subnet to the IB subnet
In node detected, and the network topology structure of the IB subnet is generated according to detection result.
Wherein, each IB Switch cascade in the IB subnet, and for each IB in the blade host
Switch module：
It is existing between each IB Switch in subnet where current IB Switch module and the blade host
Link is bound into a virtual link.
A kind of link switching system is applied in interconnection architecture IB subnet, the system comprises：
At least two interconnection architecture interchanger IB Switch and at least one blade host exist in the blade host
Main IB Switch module and spare IB Switch module, and between any one IB Switch module and each IB Switch
There is link, wherein：
The blade host, for judging to work as when the network topology structure according to the predetermined IB subnet out
When preceding the first link used breaks down, the second link is determined；From first link switching to second link, make institute
It states blade host and is able to use second link transmission data；Wherein, first link and second link be and institute
State the main IB Switch module connection in blade host.
Wherein, the blade host is also used to：
When determining that the main IB Switch module for connecting first link breaks down, the determining and blade master
The link of spare IB Switch module connection in machine；From first link switching to the spare IB Switch module
The link of connection makes the blade host be able to use the link transmission data connecting with the spare IBSwitch module.
Wherein, the link connecting with the spare IB Switch module has at least two；Then
The blade host, is specifically used for：
Determine the weight for each of the links connecting with spare IB Switch module；From first link switching to institute
The link for stating the maximum weight of spare IB Switch module connection, is able to use the blade host and the spare IB
The link transmission data of the maximum weight of Switch module connection.
Wherein, the system also includes：
Subnet manager SM, for by the IB subnet send subnet detection packet to the node in the IB subnet into
Row detects, and the network topology structure of the IB subnet is generated according to detection result.
Wherein, each IB Switch cascade in the IB subnet, and for each IB in the blade host
Switch module：
It is existing between each IB Switch in subnet where current IB Switch module and the blade host
Link is bound into a virtual link.
The embodiment of the present invention has the beneficial effect that：
In the embodiment of the present invention, the first link connecting when blade host is currently used with main IB Switch module is sent out
When raw failure, the connect with main IBSwitch module can be switched on the basis of not switching active and standby IB Switch module
Two links transmit data, and this mode for increasing redundant link in IB subnet solves blade master existing in the prior art
The problem of machine will not actively switch so as to cause data-transmission interruptions when currently used link breaks down.
Detailed description of the invention
Fig. 1 is existing IB network topology structure figure；
Fig. 2 is a kind of implementation flow chart of link switch-over method provided in an embodiment of the present invention；
Fig. 3 is the realization schematic diagram of link switch-over method provided in an embodiment of the present invention in practical applications；
Fig. 4 is a kind of structural schematic diagram of link switching system provided in an embodiment of the present invention.
Specific embodiment
It will not actively be cut to solve blade host existing in the prior art when currently used link breaks down
The problem of changing so as to cause data-transmission interruptions, the embodiment of the invention provides a kind of link switch-over method and systems.The technology
It, can be not when currently used the first link connecting with main IB Switch module of blade host breaks down in scheme
On the basis of switching active and standby IB Switch module, the second link for connecting with main IB Switch module is switched to transmit number
According to this mode for increasing redundant link in IB subnet solves blade host existing in the prior art currently used
The problem of link will not actively switch so as to cause data-transmission interruptions when breaking down.
The embodiment of the present invention is illustrated below in conjunction with Figure of description, it should be understood that implementation described herein
Example is merely to illustrate and explain the present invention, and is not intended to restrict the invention.And in the absence of conflict, the reality in this explanation
The feature for applying example and embodiment can be combined with each other.
The embodiment of the invention provides a kind of link switch-over methods, as shown in Fig. 2, be the implementation flow chart of this method,
In, there are main IB Switch modules and spare IB Switch module in blade host, and any one IB Switch module with
There is link between each IB Switch in IB subnet where the blade host, this method specifically includes following step：
Step 21, when the blade host is according to the network topology structure for predefining itself the place IB subnet, judgement
When the first currently used link breaks down out, the second link is determined；First link and the second link with the blade host
In main IB Switch module connection；
In the embodiment of the present invention, the network topology structure of the IB subnet where blade host can as follows really
It is fixed：
Main subnet manager SM in the IB subnet is by sending subnet detection packet to the section in the IB subnet to IB subnet
Point is detected, and the network topology structure of the IB subnet is generated according to detection result.
Wherein, SM is one of function common in IB network, realizes the centralized management to IB subnet.The subnet that SM is sent is visited
Most common one is directed routing packet in survey packet, there is initial path field in directed routing packet the inside（init_path）, instruction packet
, there is hop count field in the path of progress（hop_count）, indicate the hop count that packet passes through, there is return path field（return_
path）, the path that record response bag carries out, by above- mentioned information, subnet detection packet can complete all topologys search and
Initial work.Init_path and return_path record be actually port numbers, instruction present node should packet from
Which port is sent.
The detection process of subnet manager is mainly as follows：SM sends a Get to its resident local node first
(Nodeinfo) subnet management detection packet SMP, after obtaining response, SM judges whether to detect this node, if do not visited
This node was surveyed, then adds it topological database, if having detected this node, SM passes through Get（Portinfo）
The port status information that SMPs obtains the node then adds it port list if it is the port CA, if it is the pipe of interchanger
Manage port, then configure this port, carry out parameter setting, it will be seen then that port be added in the list item of port object (po).It connects
By the port status information of acquisition, SM judges whether the other end of the port connects other equipment, sets if connection is other
It is standby then continue send Get（Nodeinfo SMP) is detected, and if judging to detect whether to terminate without if, is not over
Words, continue to detect, if terminating just to terminate to detect process.
In general, SM can reside in any one port of any one CA, switch or router, and in order to anti-
Only single point failure, may exist multiple SM in IB subnet, and a main SM and multiple backup SM, backup SM detect that main SM is dead
When, a backup SM can be selected to be known as main SM, adapter tube subnet management power.
Step 22, from the first link switching to the second link, the blade host is made to be able to use the second link transmission data.
Since the first link and the second link are connect with the main IB Switch module in blade host, actually
There is no switching IB Switch modules.And the first link and the second link can also first pass through the binding of dual link binding technology in advance
At a virtual link, that is to say, that no matter use the first link transmission data or transmit the second link transmission data, be all
Data are transmitted by the virtual link of binding.
In the embodiment of the present invention, the first link connecting when blade host is currently used with main IB Switch module is sent out
When raw failure, the connect with main IBSwitch module can be switched on the basis of not switching active and standby IB Switch module
Two links transmit data, and this mode for increasing redundant link in IB subnet solves blade master existing in the prior art
The problem of machine will not actively switch so as to cause data-transmission interruptions when currently used link breaks down.
As shown in figure 3, being the realization schematic diagram of above-mentioned link switch-over method in practical applications.Wherein, blade host 1 is deposited
In two IB Switch modules, one is main IB Switch module, and one is spare IB Switch module, with the prior art
It compares, a link 9001 is increased between IB Switch1 and the spare IB Switch module of blade host 1, in IB
One link 9003 of increase between Switch2 and the main IB Switch module of blade host 1, and IB Switch1 and IB
It is cascaded between Switch2.
With reference to Fig. 3, the nodal test of full IB subnet is carried out by SM in IB subnet initialization, generates network topology structure,
And inside blade host 1, by dual link binding technology, link 9000 and 9003 is bound into a virtual link, chain
Road 9001 and 9002 is bound into another virtual link.
When the link 9000 between IB Switch1 and the main IB Switch module of blade host 1 breaks down, due to
IB Switch module does not have first line of a couplet testing mechanism, therefore main IB Switch module and spare IB Switch module not will do it
Switching, and SM can carry out nodal test according to network detection process again, and be regenerated according to preset routing algorithm
New network topology structure.The link 9003 of main IB Switch module is connected so that it is determined that going out, and switch to link 9003 to make to count
According to can be from the spare IB Switch module transfer of blade host 1 into IB Switch2.
Therefore, in this IB subnet, when currently used link down, the network service of blade host will not in
It is disconnected, to achieve the purpose that the safety and stability transmission for guaranteeing data.
Further, under this IB network architecture, when blade host judges the main IB of link 9000 and 9003
When Switch module breaks down, the chain that connect with spare IB Switch module will be switched on the road, such as by data from chain
Road 9000 is switched to link 9002, to guarantee that data transmission is not interrupted.
Since the link connecting with spare IB Switch module there are two, can determine first and spare IB
The weight of each of the links of Switch module connection, and then it is switched to the maximum weight connecting with spare IB Switch module
Link transmits data.
Accordingly.The embodiment of the invention also provides a kind of link switching systems, as shown in figure 4, being the structure of the system
Schematic diagram, the system are applied in interconnection architecture IB subnet, including：
At least two interconnection architecture interchanger IB Switch41 and at least one blade host 42, the blade host 42
In there are main IB Switch modules and spare IB Switch module, and any one IB Switch module and each IB
There is link between Switch41, wherein：
The blade host 42, for judging when the network topology structure according to the predetermined IB subnet out
When the first currently used link breaks down, the second link is determined；From first link switching to second link, make
The blade host is able to use second link transmission data；Wherein, first link and second link with
Main IB Switch module connection in the blade host.
Wherein, the blade host 42 is also used to：
When determining that the main IB Switch module for connecting first link breaks down, the determining and blade master
The link of spare IB Switch module connection in machine；From first link switching to the spare IB Switch module
The link of connection makes the blade host be able to use the link transmission data connecting with the spare IB Switch module.
Wherein, when the link connecting with the spare IB Switch module has at least two, the blade host 42,
It is specifically used for：
Determine the weight for each of the links connecting with spare IB Switch module；From first link switching to institute
The link for stating the maximum weight of spare IB Switch module connection, is able to use the blade host and the spare IB
The link transmission data of the maximum weight of Switch module connection.
Further, the system can also include：
Subnet manager SM, for by the IB subnet send subnet detection packet to the node in the IB subnet into
Row detects, and the network topology structure of the IB subnet is generated according to detection result.
Wherein, each IB Switch41 cascade in the IB subnet, and for each of described blade host 42
IB Switch module：
It is deposited between each IB Switch41 in subnet where current IB Switch module and the blade host 42
Link be bound into a virtual link.
It should be understood by those skilled in the art that, the embodiment of the present invention can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the present invention
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the present invention, which can be used in one or more,
Usable storage medium（Including but not limited to magnetic disk storage, CD-ROM, optical memory etc.）The computer program of upper implementation produces
The form of product.
The present invention be referring to according to the method for the embodiment of the present invention, equipment（System）And the process of computer program product
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (6)
1. a kind of link switch-over method, which is characterized in that there are main interconnection architecture interchanger IB Switch modules in blade host
With spare IB Switch module, and any one IB Switch module and each of the IB subnet where the blade host
There is link between IB Switch, the method includes：
When the blade host according to predefine itself where IB subnet network topology structure, judge currently used
The first link when breaking down, determine the second link, from first link switching to second link, make the blade
Host is able to use second link transmission data；Wherein, first link and second link with the blade
Main IB Switch module connection in host；
When the blade host determines that the main IB Switch module for connecting first link breaks down, determining and institute
State in blade host spare IB Switch module connection link, from first link switching to the spare IB
The link of Switch module connection, makes the blade host be able to use the link connecting with the spare IB Switch module
Transmit data；
Wherein, the network topology structure determines as follows：Subnet manager SM in the IB subnet is by institute
It states IB subnet transmission subnet detection packet to detect the node in the IB subnet, and IB is generated according to detection result
The network topology structure of net.
2. the method as described in claim 1, which is characterized in that the link being connect with the spare IB Switch module have to
It is two few；Then
From first link switching to the link connecting with the spare IB Switch module, enable the blade host
Using the link transmission data being connect with the spare IB Switch module, specifically include：
Determine the weight for each of the links connecting with spare IB Switch module；
From first link switching to the link for the maximum weight connecting with the spare IB Switch module, make the knife
Piece host is able to use the link transmission data for the maximum weight connecting with the spare IB Switch module.
3. method according to claim 1 or 2, which is characterized in that each IB Switch cascade in the IB subnet, and
And for each IB Switch module in the blade host：
Existing link between each IB Switch in subnet where current IB Switch module and the blade host
It is bound into a virtual link.
4. a kind of link switching system, which is characterized in that be applied in interconnection architecture IB subnet, the system comprises at least two
Interconnection architecture interchanger IB Switch and at least one blade host, in the blade host there are main IB Switch module and
Spare IB Switch module, and there is link between any one IB Switch module and each IB Switch, wherein：
The blade host, for judging currently to make when the network topology structure according to the predetermined IB subnet out
When first link breaks down, the second link is determined, from first link switching to second link, make the knife
Piece host is able to use second link transmission data；Wherein, first link and second link with the knife
Main IB Switch module connection in piece host；
The blade host is also used to when determining that the main IB Switch module for connecting first link breaks down, really
The fixed link being connect with the spare IB Switch module in the blade host, from first link switching to it is described standby
The link connected with IB Switch module is able to use the blade host and connect with the spare IB Switch module
Link transmission data；
The system also includes：Subnet manager SM, for by sending subnet detection packet to IB to the IB subnet
Node in net is detected, and the network topology structure of the IB subnet is generated according to detection result.
5. system as claimed in claim 4, which is characterized in that the link being connect with the spare IB Switch module have to
It is two few；Then
The blade host, is specifically used for：
Determine the weight for each of the links connecting with spare IB Switch module；From first link switching to it is described standby
With the link for the maximum weight that IB Switch module connects, it is able to use the blade host and the spare IB Switch
The link transmission data of the maximum weight of module connection.
6. system as described in claim 4 or 5, which is characterized in that each IB Switch cascade in the IB subnet, and
And for each IB Switch module in the blade host：
Existing link between each IB Switch in subnet where current IB Switch module and the blade host
It is bound into a virtual link.
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| CN104796276A (en) | 2015-07-22 |
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