CN106506074B - A kind of method and apparatus detecting optical port state - Google Patents
A kind of method and apparatus detecting optical port state Download PDFInfo
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- CN106506074B CN106506074B CN201610889803.6A CN201610889803A CN106506074B CN 106506074 B CN106506074 B CN 106506074B CN 201610889803 A CN201610889803 A CN 201610889803A CN 106506074 B CN106506074 B CN 106506074B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
- H04B10/0791—Fault location on the transmission path
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
- H04L43/0805—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability
- H04L43/0811—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability by checking connectivity
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Abstract
The application provides a kind of method and apparatus for detecting optical port state, is applied to frame-type switch equipment, which comprises the RX_LOS signal of programmable logic chip real-time detection optical module；If RX_LOS signal value changes, value corresponding to the RX_LOS signal that programmable logic chip will test is written in the addressable default memory headroom of CPU；By programmable logic chip interrupt signal, the value in the default memory headroom is reported into CPU, to carry out optical port link down detection as CPU optical port state according to indicated by the value in the default memory headroom.Using technical solution provided by the present application, optical port link down detection speed can be accelerated, reduce the utilization rate of CPU and improve the reliability of equipment.
Description
Technical field
This application involves network communication technology field, in particular to a kind of method and apparatus for detecting optical port state.
Background technique
In Layer2 switching network, once there are looped network will result in message in loop constantly circulation and hyperplasia, generate
Broadcast storm becomes unavailable network to occupy all effective bandwidth, and in this case, Spanning-Tree Protocol is answered
It transports and gives birth to.Spanning-Tree Protocol is by selectively clogging networks redundant link, to achieve the purpose that eliminate network double-layer loop,
It is provided simultaneously with the function of link backup.
However, Spanning-Tree Protocol convergence rate is usually required that it is higher, such as usually require that convergence rate reach 1 second with
It is interior.In practical applications, due to by hardware, interface type, software optical port Scanning Detction mechanism difference etc. between networking equipment because
The influence of element, so that the convergence rate of the switch device of some 10,000,000,000 optical ports is extremely difficult to this requirement.
Summary of the invention
In view of this, the application provides a kind of method and apparatus for detecting optical port state, it is applied to frame-type switch equipment,
Accelerate the speed of the link down event detection of optical port.
Specifically, the application is achieved by the following technical solution:
A method of detection optical port state is applied to frame-type switch equipment, in the CPU of the frame-type switch equipment
Between media access control MAC chip, use a piece of programmable logic chip as interface bridge piece, comprising:
The RX_LOS signal of programmable logic chip real-time detection optical module；
If RX_LOS signal value changes, corresponding to the RX_LOS signal that programmable logic chip will test
Value is written in the addressable default memory headroom of CPU；
Value in the default memory headroom is reported to CPU by interrupt signal by programmable logic chip, with by
CPU optical port state according to indicated by the value in the default memory headroom carries out optical port link down detection.
A kind of device detecting optical port state, is applied to frame-type switch equipment, in the CPU of the frame-type switch equipment
Between media access control MAC chip, use a piece of programmable logic chip as interface bridge piece, comprising:
Detection unit, the RX_LOS signal for programmable logic chip real-time detection optical module；
Read-write cell, if changed for RX_LOS signal value, the RX_ that programmable logic chip will test
Value corresponding to LOS signal is written in the addressable default memory headroom of CPU；
Reporting unit will be in the value in the default memory headroom for programmable logic chip by interrupt signal
Report is to CPU, to carry out optical port link down as CPU optical port state according to indicated by the value in the default memory headroom
Detection.
In the application, pass through the RX_LOS signal of programmable logic chip real-time detection optical module；If RX_LOS signal
Value changes, and it is addressable pre- that CPU is written in value corresponding to the RX_LOS signal that programmable logic chip will test
If in memory headroom；Then programmable logic chip is reported to the value in the default memory headroom by interrupt signal
CPU, to carry out optical port link down detection as CPU optical port state according to indicated by the value in the default memory headroom.
Since programmable logic chip can pass through when the RX_LOS signal for detecting optical module in real time changes
Interrupt signal is generated by the value change events active reporting of optical port to CPU, without passing through starting in software view by CPU
The value of thread periodic polling optical port detects to complete the link down of optical port, therefore can accelerate optical port link down event
Detection speed, the convergence rate of equipment is effectively reduced, reduces the utilization rate of CPU, and reduces the wrong report of link down event
The reliability of probability lifting means
Detailed description of the invention
Fig. 1 is a kind of method flow diagram of detection optical port state shown in one exemplary embodiment of the application；
Fig. 2 is a kind of hardware structure diagram of frame-type switch shown in an exemplary embodiment in the related technology；
Fig. 3 is a kind of hardware structure diagram of frame-type switch shown in one exemplary embodiment of the application；
Frame-type switch where Fig. 4 is a kind of device of detection optical port state shown in one exemplary embodiment of the application is set
A kind of standby hardware structure diagram；
Fig. 5 is a kind of device of detection optical port state shown in one exemplary embodiment of the application.
Specific embodiment
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistent with the application.On the contrary, they be only with it is such as appended
The example of the consistent device and method of some aspects be described in detail in claims, the application.
It is only to be not intended to be limiting the application merely for for the purpose of describing particular embodiments in term used in this application.
It is also intended in the application and the "an" of singular used in the attached claims, " described " and "the" including majority
Form, unless the context clearly indicates other meaning.It is also understood that term "and/or" used herein refers to and wraps
It may be combined containing one or more associated any or all of project listed.
It will be appreciated that though various information, but this may be described using term first, second, third, etc. in the application
A little information should not necessarily be limited by these terms.These terms are only used to for same type of information being distinguished from each other out.For example, not departing from
In the case where the application range, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as
One information.Depending on context, word as used in this " if " can be construed to " ... when " or " when ...
When " or " in response to determination ".
In the related art, equipment is usually given RX_LOS signal reporting by optical module when detecting the state of optical port
PHY chip in network interface card carries out detection completion；PHY chip when the RX_LOS signal reported to optical module detects,
If the value of the RX_LOS signal received is high level 1, the link state of optical port is represented as normal condition；If received
The value of the RX_LOS signal arrived is low level 0, then represents the link state of optical port as down state；Meanwhile CPU can star
One thread is to PHY chip periodic polling optical port link state.
However, on the one hand, CPU carrys out the link state of periodic polling optical port, so that CPU can not be right by starting thread
The link down event of optical port is detected in real time, needs just remove poll light after the timing cycle of the thread reaches
The value of mouth, therefore will lead to slowing for the link down event for detecting optical port, so as to cause Spanning-Tree Protocol in life
During network topology, equipment convergence rate becomes very slow.
On the other hand, equipment uses the value of thread periodic polling optical port, if before the arrival of next polling cycle, it should
The corresponding RX_LOS signal of optical port is changed, and CPU can not be detected at the first time when the value of optical port changes
This variation, so as to cause optical port link down event wrong report.
In addition, equipment uses thread periodic polling optical port value, the link of optical port is then carried out according to scanning result
The mode of down detection, it may appear that there is no when variation, CPU still can pass through the poll optical port of thread cycle for optical port value
Value, to cause the waste of CPU process resource.
In order to solve the problems, such as present in the relevant technologies, this application provides a kind of method for detecting optical port state, applications
In frame-type switch equipment, between CPU the and MAC chip of the frame-type switch equipment, a piece of programmable logic core is used
Piece passes through the RX_LOS signal of programmable logic chip real-time detection optical module as interface bridge piece；If RX_LOS signal takes
Value changes, and it is addressable default that CPU is written in value corresponding to the RX_LOS signal that programmable logic chip will test
In memory headroom；Then programmable logic chip is reported to the value in the default memory headroom by interrupt signal
CPU, to carry out optical port link down detection as CPU optical port state according to indicated by the value in the default memory headroom.
On the one hand, programmable logic chip uses the RX_LOS aspect of real-time detection optical module, when detecting RX_
When the value of LOS signal changes, it can notify CPU according to corresponding to RX_LOS signal value by generating interrupt signal
Optical port state come carry out optical port link down detection, without being lined up in the execution program of CPU, waiting for CPU
Processing, it is achieved that accelerating the target of optical port link down detection speed, to generate network topology in Spanning-Tree Protocol
In the process, lifting means convergence rate.
On the other hand, programmable logic chip is by the way of the RX_LOS signal of real-time detection optical module, in RX_LOS
Signal is changed, and CPU can detect the value of each optical port in default memory at once, so that optical port link down thing
Part can detect in time, not will lead to the wrong report of the link down event of optical port.
In addition, the value in default memory headroom is reported to CPU, then by programmable logic chip interrupt signal
CPU is handled this interrupt signal by interrupt task context, without using thread periodic polling optical port value, so
Carried out afterwards according to scanning result optical port link down detection mode, therefore can to avoid optical port value there is no become
The case where when change, CPU still uses thread poll optical port value, causes the waste of cpu resource, so as to reduce making for CPU
With rate.
Referring to Figure 1, Fig. 1 is a kind of method of detection optical port state shown in the exemplary embodiment shown in the application
Flow chart, be applied to frame-type switch equipment, between CPU the and MAC chip of the frame-type switch equipment, using it is a piece of can
Programmed logic chip specifically executes following steps as interface bridge piece:
Step 101: the RX_LOS signal of programmable logic chip real-time detection optical module；
Step 102: if RX_LOS signal value changes, the RX_LOS signal that programmable logic chip will test
In the corresponding value write-in addressable default memory headroom of CPU；
Step 103: by programmable logic chip interrupt signal, the value in the default memory headroom being reported to
CPU, to carry out optical port link down detection as CPU optical port state according to indicated by the value in the default memory headroom.
Fig. 2 is referred to, Fig. 2 is a kind of hardware configuration of frame-type switch shown in an exemplary embodiment in the related technology
Figure；
In Fig. 2, equipment detect optical port state when, usually by optical module by RX_LOS signal reporting in network interface card
PHY chip completed to be detected；PHY chip when the RX_LOS signal reported to optical module detects, if
The value of the RX_LOS signal received is high level 1, then represents the link state of optical port as normal condition；If received
The value of RX_LOS signal is low level 0, then represents the link state of optical port as down state；Meanwhile CPU can star one
Thread is to PHY chip periodic polling optical port link state.
In this example, can the hardware configuration to above-mentioned frame-type switch illustrated in fig. 2 and optical port state detection
Process improves, and a piece of programmable logic chip can be used, and makees PCIE bridge piece, carries out what data and instruction exchanged with PCIE
Chip, the RX_LOS signal of optical module will be reported to programmable logic chip and be handled, and programmable logic chip has been handled
Cheng Hou can produce interruption if the value of RX_LOS signal changes, and then report to the value of RX_LOS signal
The addressable memory headroom of CPU.And CPU can no longer enable thread and carry out periodic polling optical port link state, so as to accelerate
The detection speed of optical port link down event, lifting means run the convergence rate of Spanning-Tree Protocol.
Fig. 3 is referred to, Fig. 3 is a kind of hardware structure diagram of frame-type switch shown in one exemplary embodiment of the application.
In this example, programmable logic chip can be with the RX_LOS signal of real-time detection optical module, when programmable logic core
When piece detects that the value of RX_LOS signal is 1, then show that the corresponding optical port of RX_LOS signal is normal condition, such
In the case of, then programmable logic chip can continue to keep the real-time detection state to the RX_LOS signal of optical module.
If RX_LOS signal value changes, i.e., programmable logic chip detects at this time RX_LOS signal takes
Value is 0, then shows that the corresponding optical port of RX_LOS signal is down state, in this case, then programmable logic chip
Value corresponding to the RX_LOS signal that can be will test is written in the addressable default memory headroom of CPU, the default memory
Space can be the memory headroom in CPU, be also possible to the memory headroom of programmable logic chip, arrive as long as CPU is accessible
The memory headroom.
In a kind of embodiment shown, optical port scanning thread, institute can be created in the CPU of frame-type switch equipment
It states optical port scanning thread to be specifically used for when CPU receives interrupt requests, then CPU can start light with interrupt task context
Mouth scanning thread, is scanned each optical port in the preset memory headroom of CPU, then according to the value of each optical port, to each light
The link state of mouth is detected accordingly.
Under normal circumstances, the optical port of optical module is high level, and the value that optical port is corresponded in CPU memory is 1, if
Optical port is down state, then is 0 corresponding to the value of optical port in CPU memory.
When programmable logic chip detects that the value of RX_LOS signal changes, programmable logic chip be can produce
The interrupt signal is sent to CPU by interrupt signal, CPU in response to the interrupt signal, CPU can interrupt task context, so
Optical port is waken up afterwards and scans thread, thread is scanned by optical port, the corresponding value of optical port each in default memory headroom is scanned,
To carry out the link down detection of each optical port.
If the value of scanning to any optical port is 0, it can determine that link down event has occurred in the optical port at this time, this
When the link down event of the optical port that can further will test report to the kernel protocol stack of CPU and continue to handle.
The kernel protocol stack of CPU can re-start association based on Spanning-Tree Protocol after receiving the link down event that CPU is reported
View processing, recalculates network topology.
In this way, since the state-detection of optical port will be no longer dependent on the automatic regular polling of CPU, but by may be programmed
Logic chip active reporting, therefore the detection speed of link down event can be promoted, reduce the convergence speed of Spanning-Tree Protocol
Degree.
Wherein, in a kind of embodiment shown, CPU is scanning thread to all light of optical module by above-mentioned optical port
When mouth is scanned, optical port scanning thread can be swept so that whether optical port all in real-time judge memory headroom is fully completed
It retouches, if optical port all in memory is fully completed scanning, terminates the optical port scanning thread and waited into sleep state
Wake-up next time；If all optical ports are not completed to scan in memory, optical port scanning thread can continue to remaining light
Mouth is scanned, until all optical ports are fully completed scanning.
By the above technical solution provided by the present application as it can be seen that passing through the RX_ of programmable logic chip real-time detection optical module
LOS signal；If RX_LOS signal value changes, corresponding to the RX_LOS signal that programmable logic chip will test
Value is written in the addressable default memory headroom of CPU；Then programmable logic chip, will be described default interior by interrupt signal
The value deposited in space reports to CPU, with as CPU optical port state according to indicated by the value in the default memory headroom into
Row optical port link down detection.
On the one hand, programmable logic chip uses the RX_LOS aspect of real-time detection optical module, when detecting RX_
When the value of LOS signal changes, it can notify CPU according to corresponding to RX_LOS signal value by generating interrupt signal
Optical port state come carry out optical port link down detection, without being lined up in the execution program of CPU, waiting for CPU
Processing, it is achieved that accelerating the target of optical port link down detection speed, to generate network topology in Spanning-Tree Protocol
In the process, lifting means convergence rate.
On the other hand, programmable logic chip is by the way of the RX_LOS signal of real-time detection optical module, if RX_
LOS signal is changed, and CPU can detect the value of each optical port in default memory at once, so that the link of optical port
Down event can detect in time, not will lead to the wrong report of the link down event of optical port.
In addition, the value in default memory headroom is reported to CPU, then by programmable logic chip interrupt signal
CPU is handled this interrupt signal by interrupt task context, without using thread periodic polling optical port value, so
Carried out afterwards according to scanning result optical port link down detection mode, therefore can to avoid optical port value there is no become
The case where when change, CPU still uses thread poll optical port value, causes the waste of cpu resource, so as to reduce making for CPU
With rate.
Corresponding with a kind of aforementioned detection embodiment of method of optical port state, present invention also provides a kind of detection optical ports
The embodiment of the device of state.
A kind of embodiment for the device for detecting optical port state of the application can be applied in frame-type switch equipment.Device is real
Applying example can also be realized by software realization by way of hardware or software and hardware combining.Taking software implementation as an example, make
For the device on a logical meaning, being will be right in nonvolatile memory by the processor of frame-type switch equipment where it
The computer program instructions answered are read into memory what operation was formed.For hardware view, as shown in figure 4, being the application one
A kind of hardware structure diagram of frame-type switch equipment where the device of kind of detection optical port state, in addition to processor shown in Fig. 4, interior
It deposits, except network interface and nonvolatile memory, the frame-type switch equipment in embodiment where device is generally according to this
The actual functional capability of optical port state is detected, can also include other hardware, this is repeated no more.
Referring to FIG. 5, Fig. 5 is a kind of device of detection optical port state shown in the application, set applied to frame-type switch
It is standby, between CPU the and MAC chip of the frame-type switch equipment, use a piece of programmable logic chip as interface bridge piece,
Described device includes: detection unit 510, read-write cell 520, reporting unit 530.
Wherein, detection unit 510, the RX_LOS signal for programmable logic chip real-time detection optical module.
Read-write cell 520, if changed for RX_LOS signal value, what programmable logic chip will test
Value corresponding to RX_LOS signal is written in the addressable default memory headroom of CPU.
Reporting unit 530, for programmable logic chip by interrupt signal, by the value in the default memory headroom
CPU is reported to, to carry out optical port link as CPU optical port state according to indicated by the value in the default memory headroom
Down detection.
In this example, described device further include:
Creating unit scans thread for creating optical port in CPU.
Scanning element starts the optical port scanning thread to described default for CPU in response to the interrupt signal received
The corresponding value of each optical port is scanned in memory headroom；
Execution unit detects optical port shape indicated by the value of any optical port recorded in the memory headroom for working as
When state is Down state, the link down event of the optical port is confirmly detected.
Judging unit, for judging whether each optical port is fully completed scanning；It is swept if each optical port is fully completed
It retouches, then terminates the optical port scanning thread.
In the present embodiment, the execution unit is further used for the link down event for the optical port that will test
It is reported to the kernel protocol stack of CPU, network topology is recalculated based on Spanning-Tree Protocol.
The function of each unit and the realization process of effect are specifically detailed in the above method and correspond to step in above-mentioned apparatus
Realization process, details are not described herein.
For device embodiment, since it corresponds essentially to embodiment of the method, so related place is referring to method reality
Apply the part explanation of example.The apparatus embodiments described above are merely exemplary, wherein described be used as separation unit
The unit of explanation may or may not be physically separated, and component shown as a unit can be or can also be with
It is not physical unit, it can it is in one place, or may be distributed over multiple network units.It can be according to actual
The purpose for needing to select some or all of the modules therein to realize application scheme.Those of ordinary skill in the art are not paying
Out in the case where creative work, it can understand and implement.
The foregoing is merely the preferred embodiments of the application, not to limit the application, all essences in the application
Within mind and principle, any modification, equivalent substitution, improvement and etc. done be should be included within the scope of the application protection.
Claims (10)
1. a kind of method for detecting optical port state, is applied to frame-type switch equipment, which is characterized in that in the frame-type switch
Between the CPU and media access control MAC chip of equipment, use a piece of programmable logic chip as interface bridge piece, comprising:
The RX_LOS signal of programmable logic chip real-time detection optical module；
If RX_LOS signal value changes, value corresponding to the RX_LOS signal that programmable logic chip will test
It is written in the addressable default memory headroom of CPU；
Value in the default memory headroom is reported to CPU, by CPU root by interrupt signal by programmable logic chip
Optical port link down detection is carried out according to optical port state indicated by the value in the default memory headroom.
2. the method according to claim 1, wherein by CPU according to the value in the default memory headroom
Before indicated optical port state carries out optical port link down detection, the method also includes:
Optical port is created in CPU scans thread.
3. according to the method described in claim 2, it is characterized in that, it is described by CPU according to taking in the default memory headroom
The indicated optical port state of value carries out optical port link down detection, comprising:
CPU starts the optical port scanning thread to each optical port in the default memory headroom in response to the interrupt signal received
Corresponding value is scanned；
When the optical port state indicated by the value of any optical port that scanning is recorded into the memory headroom is Down state, really
Regular inspection measures the link down event of the optical port.
4. according to the method described in claim 3, it is characterized in that, the method also includes:
The link down event for the optical port that will test is reported to the kernel protocol stack of CPU, by Spanning-Tree Protocol again based on
Calculate network topology.
5. according to the method described in claim 4, it is characterized in that, the method also includes:
Judge whether each optical port is fully completed scanning in the memory；
If each optical port is fully completed scanning in the memory, the optical port scanning thread is terminated.
6. a kind of device for detecting optical port state, is applied to frame-type switch equipment, which is characterized in that in the frame-type switch
Between the CPU and media access control MAC chip of equipment, use a piece of programmable logic chip as interface bridge piece, comprising:
Detection unit, the RX_LOS signal for programmable logic chip real-time detection optical module；
Read-write cell, if changed for RX_LOS signal value, the RX_LOS that programmable logic chip will test believes
In the value write-in addressable default memory headroom of CPU corresponding to number；
Reporting unit reports to the value in the default memory headroom for programmable logic chip by interrupt signal
CPU, to carry out optical port link down detection as CPU optical port state according to indicated by the value in the default memory headroom.
7. device according to claim 6, which is characterized in that described device further include:
Creating unit scans thread for creating optical port in CPU.
8. device according to claim 7, which is characterized in that described device further include:
Scanning element starts the optical port scanning thread to the default memory for CPU in response to the interrupt signal received
The corresponding value of each optical port is scanned in space；
Execution unit detects that optical port state indicated by the value of any optical port recorded in the memory headroom is for working as
When Down state, the link down event of the optical port is confirmly detected.
9. device according to claim 8 characterized by comprising
The execution unit is further used for:
The link down event for the optical port that will test is reported to the kernel protocol stack of CPU, by Spanning-Tree Protocol again based on
Calculate network topology.
10. device according to claim 9, which is characterized in that described device further include:
Judging unit, for judging whether value corresponding with each optical port is fully completed scanning in the memory；If in described
Value corresponding with each optical port is fully completed scanning in depositing, then terminates the optical port scanning thread.
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| CN111131936B (en) * | 2019-12-28 | 2022-07-08 | 苏州浪潮智能科技有限公司 | Optical module monitoring method, monitoring device, switch and storage medium |
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| CN105634807A (en) * | 2015-12-30 | 2016-06-01 | 北京东土科技股份有限公司 | Method and apparatus for port state synchronization |
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