CN109728915A - The switching method of dual redundant network interface card under windows XPE - Google Patents
The switching method of dual redundant network interface card under windows XPE Download PDFInfo
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Abstract
The invention belongs to network technique fields, and in particular to the switching method of dual redundant network interface card under a kind of windows XPE.Firstly, initialization winio driving layer environment and traversal device PCI search target network interface card, the memory base address space of network interface card is calculated by PCI information；Secondly, carrying out the IP Initialize installation of network interface card and two network interface cards being required to use the same address IP difference mac；On this basis, link register state is read by memory base address.Using the method based on poll, status inquiry is carried out to two network interface cards, to realize the handoff procedure of dual redundant network interface card.
Description
Technical field
The invention belongs to network technique fields, and in particular to the switching method of dual redundant network interface card under a kind of windows XPE.
Background technique
Windows XP Embedded operating system is embedded OS, and it is all to possess windows XP professional version
Function and attribute, and possess according to using need can cut randomly the characteristics of and have self-protection function.It usually answers at present
System platform is using the WinXPE for cutting version, to guarantee that system minimum runs expense, only in the system that minimum can be cut
Add networking component function.
With the maturation of network technology, in order to provide the reliability and stability of system, need that a kind of strategy is taken to guarantee
In the case where one piece of net card failure of some node or cable failure, network still can normal communication.Mature at present is double superfluous
Co-net card handoff technique, which has, completes double net switchings by intermediate protocol, the adaptation module of this method based intermediate layer implemented from
And bottom hardware difference is shielded, including driving registering unit, virtual Miniport Driver unit and protocol layer driving unit.But it should
Solution requires the process of adaptation to occupy a large amount of time in handoff procedure, is unfavorable for the recovery of network failure, simultaneously
The operation of kernel level easily causes system crash, and there are security risks, is not suitable for the system features of XPE；There are also be based on network
The method of communication is filtered data packet from software to realize switching.It is this to carry out analysis solution in application layer, switching
Overlong time is unfavorable for the guarantee of network communication quality.
Therefore, in order to solve the problems, such as the dual redundant network switching under WindowXPE, shorten switching time, simplify switching and calculate
Method complexity, there is an urgent need to propose a kind of dual redundant network interface card switching method.
Summary of the invention
(1) technical problems to be solved
The technical problem to be solved by the present invention is windowsXPE platform it is minimum can cutting system there was only networking component
In the case of, that how to realize dual redundant network interface card is switched fast problem.
(2) technical solution
To solve prior art problem, the present invention provides a kind of switching method of dual redundant network interface card under windows XPE, institute
It states and is provided with dual redundant network interface card in environment applied by method, which comprises
Step 1: searching network interface card, obtain the memory headroom base address of dual redundant network interface card；
Step 2: IP initialization is carried out to the dual redundant network interface card found；
Step 3: the switching of dual redundant network interface card is carried out based on polling mode.
Wherein, the step 1 includes:
Step 11: initialization winio driving, is I/O port operation configuration surroundings, allows to directly read from the port I/O interior
Hold；
Step 12: in system connected equipment, traversal queries device PCI resource is to be accurately positioned network interface card；According to equipment sequence
Number, function serial number, bus serial number information calculate the read/write address of the port I/O, obtained from the port I/O and data and calculate the data
Whether matched with the supply trading company of equipment to be checked, instrument factory trading company, to position target network interface card；
Step 13: being calculated according to the equipment serial number of target network interface card, function serial number, bus serial number, pci configuration address Bus number
The read/write address of the port I/O out obtains the memory headroom base address of target network interface card from the port I/O.
Wherein, in the step 2,
By driving layer functions traversal obtain all devices Adapted information and with target network interface card is predefined is adapted to description
Information is compared one by one, and is distinguished two network interface card Adapted information call numbers according to the description information name prefix of two network interface cards and protected
It deposits, the setting of the IP information of current network interface card is carried out by Adapted information call number.
Wherein, in the step 2,
Fixed IP cannot be all arranged in specified two network interface card init states, i.e., IP address is arranged in the locality connection of host
Middle selection " automatic to obtain "；The initial IP setting of network is completed, and only the network interface card currently used online is configured, spare net
Card takes no IP state；When initializing network interface card IP, the IP information configured before first deleting before setting is dynamic further according to configuration file
State setting.
Wherein, the step 2 includes:
Step 21: read configuration file, obtain preset IP information, if the IP information in vain if to enable this program macro fixed
The IP information of justice；
Step 22: circulation obtains host equipment Adapted information；
Step 23: the description information of Adapted information and the predefined description information of target network interface card are compared, if
Match, then saves current Adapted information；
Step 24: work network interface card and spare network interface card being distinguished according to the predefined description information of network interface card, and save every piece of net
The adaptation call number of card；
Step 25: deleting the IP information of two pieces of network interface cards；
Step 26: being that current online network interface card adds default IP information according to Adapted information call number.
Wherein, in the step 3, according to the address of the memory base address calculation outgoing link register of network interface card, pass through the end I/O
The read-write operation of mouth obtains the current online link state of network interface card in a network；Network interface card link shape is inquired by way of poll
State then carries out the switching of two network interface cards when detecting abnormal；Then normal network interface card is given to add IP by deleting failure network interface card IP information
Information completes handoff procedure.
Wherein, the step 3 includes:
Step 31: according to the address of the memory base address calculation outgoing link register of network interface card；
Step 32: the link state of the current online network interface card of judgement, it is normal for recording current handoff state if normal, and
Without handoff procedure；
Step 33: if current online network interface card is abnormal, judging whether the link state of spare network interface card is normal, if standby
It is continued to inquire the spare network card status with net card failure, allows the inquiry of certain number, if being more than specified value, shape will be switched
State is set as failure；
Step 34: if spare network interface card normally if switch over, the IP of current online network interface card is deleted and to spare net
Card addition IP information, while spare network interface card is set as current online network interface card, complete handoff procedure.
(3) beneficial effect
The invention belongs to dual redundant network switching technologies, in the case where system is the application scenarios of WindowsXPE, for system
Platform character according to network self transmission feature, and combines I/O bottom operation library, and network interface card IP information is set dynamically, and design is realized
A kind of dual redundant network interface card handover scheme based on winio driving layer.The program completes the adaptation of network interface card by driving layer, utilizes
Software dynamic setting network interface card IP information shortens switching time and completes the switching between double netcard.
Detailed description of the invention
Fig. 1 is that dual redundant network interface card switches main flow chart.
Fig. 2 is technical solution of the present invention schematic diagram.
Specific embodiment
To keep the purpose of the present invention, content and advantage clearer, with reference to the accompanying drawings and examples, to of the invention
Specific embodiment is described in further detail.
To solve prior art problem, the present invention provides a kind of switching method of dual redundant network interface card under windows XPE, such as
Dual redundant network interface card is provided with shown in Fig. 2, in environment applied by the method, which comprises
Step 1: searching network interface card, obtain the memory headroom base address of dual redundant network interface card；
Step 2: IP initialization is carried out to the dual redundant network interface card found；
Step 3: the switching of dual redundant network interface card is carried out based on polling mode.
Wherein, the step 1 includes:
Step 11: initialization winio driving, is I/O port operation configuration surroundings, allows to directly read from the port I/O interior
Hold；
Step 12: in system connected equipment, traversal queries device PCI resource is to be accurately positioned network interface card；According to equipment sequence
Number, function serial number, bus serial number information calculate the read/write address of the port I/O, obtained from the port I/O and data and calculate the data
Whether matched with the supply trading company of equipment to be checked, instrument factory trading company, to position target network interface card；
Step 13: being calculated according to the equipment serial number of target network interface card, function serial number, bus serial number, pci configuration address Bus number
The read/write address of the port I/O out obtains the memory headroom base address of target network interface card from the port I/O.
Wherein, in the step 2,
By driving layer functions traversal obtain all devices Adapted information and with target network interface card is predefined is adapted to description
Information is compared one by one, and is distinguished two network interface card Adapted information call numbers according to the description information name prefix of two network interface cards and protected
It deposits, the setting of the IP information of current network interface card is carried out by Adapted information call number.
Wherein, in the step 2,
Two network interface cards presence and with the same address IP difference mac simultaneously is arranged in this programme.Using different MAC and
Different IP can cause the variation of the protocol layer ARP binding relationship table of system, physical address and IP address in the ARP table that remaps
Relationship will increase the time of network redundancy switching, not can guarantee the real-time of network communication.Specify two network interface card init states
Fixed IP cannot be all set, i.e., selection " automatic to obtain " in IP address setting in the locality connection of host；Complete the first of network
The setting of beginning IP, and only the network interface card currently used online is configured, spare network interface card takes no IP state；Initialize network interface card IP
When, the IP information configured before first deleting before setting is set dynamically further according to configuration file.
Wherein, the step 2 includes:
Step 21: read configuration file, obtain preset IP information, if the IP information in vain if to enable this program macro fixed
The IP information of justice；
Step 22: circulation obtains host equipment Adapted information；
Step 23: the description information of Adapted information and the predefined description information of target network interface card are compared, if
Match, then saves current Adapted information；
If the quantity for finding target network interface card is equal to predefined quantity, circulation is exited；
Step 24: work network interface card and spare network interface card being distinguished according to the predefined description information of network interface card, and save every piece of net
The adaptation call number of card；
Step 25: deleting the IP information of two pieces of network interface cards；
Step 26: being that current online network interface card adds default IP information according to Adapted information call number.
Wherein, in the step 3, according to the address of the memory base address calculation outgoing link register of network interface card, pass through the end I/O
The read-write operation of mouth obtains the current online link state of network interface card in a network；Network interface card link shape is inquired by way of poll
State then carries out the switching of two network interface cards when detecting abnormal；Then normal network interface card is given to add IP by deleting failure network interface card IP information
Information completes handoff procedure.
Wherein, the step 3 includes:
Step 31: according to the address of the memory base address calculation outgoing link register of network interface card；
Step 32: the link state of the current online network interface card of judgement, it is normal for recording current handoff state if normal, and
Without handoff procedure；
Step 33: if current online network interface card is abnormal, judging whether the link state of spare network interface card is normal, if standby
It is continued to inquire the spare network card status with net card failure, allows the inquiry of certain number, if being more than specified value, shape will be switched
State is set as failure；
Step 34: if spare network interface card normally if switch over, the IP of current online network interface card is deleted and to spare net
Card addition IP information, while spare network interface card is set as current online network interface card, complete handoff procedure.
Embodiment 1
The present embodiment provides the methods that dual redundant network interface card under a kind of windows XPE switches comprising:
(1) initialization winio driving layer environment and lookup pci equipment, can initialize winio according to this step and use ring
Border carries out i/o and reads and writes configuration surroundings, by the current pci equipment of the information searchings such as the device number of network interface card and calculates each network interface card
Memory base address space；
(2) network interface card is initialized, the Adapted information of current equipment can be found out according to this step and is described according to adaptation
It is matched to target network interface card, the setting of IP information is carried out according to adapter call number；
(3) base address obtains link register read/write address based on memory, obtains link state, is read by way of poll
It takes network card status and switches over, step (1) and step (2) realize the positioning and initialization of target network interface card, and step (3) is realized
Double netcard handoff procedure based on link register status inquiry.
Wherein, the step (1) and step (2), which realize to traverse by pci facility information, searches target network interface card and acquisition
Network interface card memory base address, two network interface cards while presence that Configuration network environment is same IP difference mac, it is desirable that the IP of network interface card is set
Setting can only be arranged by switching software, and the IP of each network interface card of host side locality connection is set as " automatic to obtain " mode.
Wherein, the step (3), which realizes, carries out conversion acquisition link register address for memory base address, and passes through
The operation of I/O port read write obtains the link state value that register is deposited；The link state of two network interface cards is constantly inquired in a manner of poll,
The switching of dual redundant network interface card is carried out by way of deleting failure network interface card IP and adding IP for be switched network interface card.
Embodiment 2
In order to solve the switching problem of dual redundant network under windowsXPE system, as shown in Figure 1, the present embodiment uses base
I/o read-write operation is carried out in the driving layer of winio, the pci equipment searched and can currently arranged then is traversed after initializationization winio environment
Information.By above-mentioned steps, device number, function information matches to two pieces of inserted target network interface cards can be passed through and calculated respectively
I/o address space, network is initialized on this basis, IP information predefined in configuration file is loaded into
Network interface card is accessed register in a manner of poll finally to obtain the link state of network interface card, carries out network interface card switching according to state in real time
Process.The contents of the present invention are further described below.
1, network interface card is searched
The read-write operation that the end I/O is carried out using winio first carries out the initialization operation of driving layer environment.Meanwhile Cong Kelie
Pci equipment according to device number, function number, Bus number information carry out traversal search target network interface card.According to the register of network interface card
Address is written and read access, obtains the memory base address space of network interface card.Specific step is as follows:
(1) initialization winIo drives layer environment；
(2) it carries out pci device resource traversal and searches target network interface card；
(3) memory base address is calculated according to target network card equipment number, function number, Bus number, address wire size；
Lower mask body introduces pci device resource and searches process:
Step1: three floor loop iteration are carried out according to the range of device number, function number, Bus number；
Step2: calculating the address for carrying out I/O port read write according to device number, function number, Bus number, reads in the port i/0
Data simultaneously judge whether that high 16 that meet data are supply trading company deviceId, and low 16 are instrument factory trading company vendorId,
Such as meet condition, then it represents that find target network card equipment, save its information.
The calculating of Step 3:pci memory base address space: it is calculated according to device number, function number, Bus number and carries out the end I/O
Memory headroom base address is read in the port I/O in the address of mouth read-write.
2, network interface card is initialized
To be switched fast two network interface card realizations, we set two network interface cards and use the same IP difference MAC Address.Due to
The variation that can cause the protocol layer ARP binding relationship table of system using different MAC and different IP, reflects physics in ARP table again
The relationship of address and IP address will increase the time of network redundancy switching, not can guarantee the real-time of network communication.So we
Fixed IP cannot be all arranged in specified two network interface card init states, be arranged by the initial IP that switching software completes network, and only right
The network interface card currently used online is configured.
Initializing network interface card, steps are as follows:
Step1: reading configuration file, obtain preset IP information, if the IP information in vain if to enable this program macro fixed
The IP information of justice.
Step2: circulation obtains host equipment Adapted information；
Step3: the description information of Adapted information and the predefined description information of target network interface card are compared, if
Match, then saves current Adapted information；
Step4: if the quantity for finding target network interface card is equal to predefined quantity, circulation is exited；
Step5: work network interface card and spare network interface card are distinguished according to the description information of network interface card, and save the adaptation of every piece of network interface card
Call number；
Step6: the IP information of two pieces of network interface cards is deleted；
Step7: being that current online network interface card adds default IP information according to Adapted information call number；
3, the dual redundant network interface card switching based on polling mode
It is inquired by way of poll and obtains network interface card link state, and the acquisition of network interface card link state is based on link register
Read-write.Specific step is as follows:
Step1: the memory address content of offset base address is read using I/O port operation；
Step2: according to the corresponding bit digit of register it is judged that link state；
Operation is switched over if detecting current network interface card for off-state, otherwise continues to inquire.In switching,
If spare network interface card is in connection status: the IP information of current failure network interface card need to be deleted, and this IP is added to needs and was switched
In the spare network interface card come；It needs to carry out failure logging if spare network interface card is also malfunction, indicates at present without available net
Block and unnecessary switches over operation.
Using above-mentioned technical proposal, using aforesaid operations step, the present invention may be implemented windows XPE system lower pair it is superfluous
The switching of co-net card, this method has already been through proof of algorithm, and has carried out emulation experiment inspection.As a result it indicates, the program can
To shorten the time of double net switchings, guarantee the normal communication of network.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and deformations can also be made, these improvement and deformations
Also it should be regarded as protection scope of the present invention.
Claims (7)
1. the switching method of dual redundant network interface card under a kind of windows XPE, which is characterized in that in environment applied by the method
It is provided with dual redundant network interface card, which comprises
Step 1: searching network interface card, obtain the memory headroom base address of dual redundant network interface card；
Step 2: IP initialization is carried out to the dual redundant network interface card found；
Step 3: the switching of dual redundant network interface card is carried out based on polling mode.
2. the switching method of dual redundant network interface card under windows XPE as described in claim 1, which is characterized in that the step 1
Include:
Step 11: initialization winio driving, is I/O port operation configuration surroundings, allows to directly read content from the port I/O；
Step 12: in system connected equipment, traversal queries device PCI resource is to be accurately positioned network interface card；According to equipment serial number, function
Can serial number, bus serial number information calculate the port I/O read/write address, from the port I/O obtain data and calculate the data with to
Look into the supply trading company of equipment, whether instrument factory trading company matches, to position target network interface card；
Step 13: I/ is calculated according to the equipment serial number of target network interface card, function serial number, bus serial number, pci configuration address Bus number
The read/write address of O port obtains the memory headroom base address of target network interface card from the port I/O.
3. the switching method of dual redundant network interface card under windows XPE as claimed in claim 2, which is characterized in that the step 2
In,
By driving layer functions traversal obtain all devices Adapted information and with target network interface card is predefined is adapted to description information
It is compared one by one, and two network interface card Adapted information call numbers is distinguished according to the description information name prefix of two network interface cards and are saved,
The setting of the IP information of current network interface card is carried out by Adapted information call number.
4. the switching method of dual redundant network interface card under windows XPE as claimed in claim 2, which is characterized in that the step 2
In,
Fixed IP cannot be all arranged in specified two network interface card init states, i.e., select in IP address setting in the locality connection of host
Select " automatic to obtain "；The initial IP setting of network is completed, and only the network interface card currently used online is configured, spare network interface card is adopted
Take no IP state；When initializing network interface card IP, the IP information configured before first deleting before setting is set further according to configuration file dynamic
It sets.
5. the switching method of dual redundant network interface card under windows XPE as claimed in claim 2, which is characterized in that the step 2
Include:
Step 21: read configuration file, obtain preset IP information, if the IP information in vain if enable macrodefinition IP letter
Breath；
Step 22: circulation obtains host equipment Adapted information；
Step 23: the description information of Adapted information and the predefined description information of target network interface card are compared, if it does, then
Save current Adapted information；
Step 24: work network interface card and spare network interface card being distinguished according to the predefined description information of network interface card, and save every piece of network interface card
It is adapted to call number；
Step 25: deleting the IP information of two pieces of network interface cards；
Step 26: being that current online network interface card adds default IP information according to Adapted information call number.
6. the switching method of dual redundant network interface card under windows XPE as claimed in claim 5, which is characterized in that the step 3
In, according to the address of the memory base address calculation outgoing link register of network interface card, currently existed by the read-write operation acquisition of the port I/O
The link state of gauze card in a network；Network interface card link state is inquired by way of poll, then carries out two when detecting abnormal
The switching of network interface card；Normal network interface card is then given to add IP information completion handoff procedure by deleting failure network interface card IP information.
7. the switching method of dual redundant network interface card under windows XPE as claimed in claim 5, which is characterized in that the step 3
Include:
Step 31: according to the address of the memory base address calculation outgoing link register of network interface card；
Step 32: the link state of the current online network interface card of judgement, recorded if normal current handoff state be it is normal, not into
Row handoff procedure；
Step 33: if current online network interface card is abnormal, judging whether the link state of spare network interface card is normal, if spare net
Card failure continues to inquire the spare network card status, allows the inquiry of certain number, if being more than specified value, switching state is set
For failure；
Step 34: if spare network interface card normally if switch over, the IP of current online network interface card is deleted and is added to spare network interface card
Add IP information, while spare network interface card is set as current online network interface card, completes handoff procedure.
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|---|---|---|---|---|
| CN110572275A (en) * | 2019-08-01 | 2019-12-13 | 新华三技术有限公司成都分公司 | Network card switching method and device, server and computer readable storage medium |
| CN110572275B (en) * | 2019-08-01 | 2022-09-09 | 新华三技术有限公司成都分公司 | Network card switching method and device, server and computer readable storage medium |
| CN110677283A (en) * | 2019-09-24 | 2020-01-10 | 北京计算机技术及应用研究所 | Method for fast switching network dual redundancy |
| CN110677283B (en) * | 2019-09-24 | 2022-06-24 | 北京计算机技术及应用研究所 | Method for fast switching network dual redundancy |
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