CN103297117B - Reuse method of photoelectricity port based on configuration and single board - Google Patents
Reuse method of photoelectricity port based on configuration and single board Download PDFInfo
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- CN103297117B CN103297117B CN201210045695.6A CN201210045695A CN103297117B CN 103297117 B CN103297117 B CN 103297117B CN 201210045695 A CN201210045695 A CN 201210045695A CN 103297117 B CN103297117 B CN 103297117B
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Abstract
The invention discloses a reuse method of a photoelectricity port based on configuration and a single board. The reuse method of the photoelectricity port based on configuration is applied to a single board configured with at least one optical interface and at least one electrical interface, wherein an Ethernet port on the single board is connected with one optical interface and one electrical port in a corresponding mode. The reuse method of the photoelectricity port based on configuration comprises the following steps that selective setting is conducted on the optical port and the electrical port according to a received photoelectricity attribute command of a configuration port issued by a network management system after the single board is powered up, one port is used, and the other port is forbidden. At least one optical port and at least one electrical port are configured on the single board, an Ethernet port on the single board is connected with the optical port and the electrical port in a corresponding mode, and the single board comprises a port selecting configuration module, a port selecting detecting module and a port selecting switching module. The reuse method of the photoelectricity port based on configuration and the single board are strong in controllability, can carry out flexible selection to photoelectricity ports of different characteristics, are simple and convenient to operate, and bring convenience to network management staff for maintaining and engineering maintaining.
Description
Technical field
The present invention relates to network communication technology field, more particularly to a kind of photoelectric interface duplex technology and list based on configuration
Plate.
Background technology
The form of the ethernet port of veneer can be optical interface, or electrical interface；It is existing for optic electric interface
Application method has the following disadvantages：
(1) electro optic properties of port are single, it is impossible to selected, i.e., can not realize the photoelectric interface duplex of same port,
As shown in Figure 1；
(2) electro optic properties of port can be multiplexed, and can select, but can only automatically select, it is impossible to be configured, and webmaster is not
Good control, it is handling not strong, made troubles to engineering maintenance and equipment interconnection.Some instrument, such as IXIA400T can configure port
Electro optic properties, but selection mode is single, it is impossible to which compatibility automatically selects mode.
In a word, the form of existing ethernet port is not based on configuring, or the selection mode of configuration is relatively simple, implements
Carry out underaction.
The content of the invention
The invention provides it is a kind of based on configuration optic electric interface multiplexing method and veneer, by veneer it is same with
Two kinds of interfaces of too net port are configured so that optic electric interface can realize flexible switching.
To solve the above problems, the invention provides a kind of photoelectric interface duplex method based on configuration, configuration is applied to
Have on the veneer of at least one optical interface and at least one electrical interface, wherein, the ethernet port correspondence on the veneer is connected
One optical interface and an electrical interface, methods described include：
The veneer after the power-up, the preferential configuration port electro optic properties order pair issued according to the network management system for receiving
The optical interface carries out selective setting with electrical interface, using one of interface, disables another interface.
Further, methods described also includes：
The veneer after the power-up, if not receiving the configuration port electro optic properties order, according to the acquiescence that pre-sets
Interface selective setting is carried out to the optical interface and electrical interface, using one of interface, disable another interface.
Further,
Electro optic properties selection mode information and interface selection information are carried in the configuration port electro optic properties order；
The electro optic properties selection mode information includes：Force selection mode and locking selection mode；
The configuration port electro optic properties order that the network management system that the preferential basis is received is issued is to the ethernet side
The electro optic properties of mouth carry out selective setting to the optical interface and electrical interface, specifically include：
If the electro optic properties selection mode information carried in the configuration port electro optic properties order for receiving is pressure
Selection mode or locking selection mode, then the veneer selection use the interface specified in the interface selection information.
Further,
Electro optic properties selection mode information and interface selection information are carried in the configuration port electro optic properties order；
The electro optic properties selection mode information includes：Artificial selection mode；
The configuration port electro optic properties order that the network management system that the preferential basis is received is issued is to the ethernet side
The electro optic properties of mouth carry out selective setting to the optical interface and electrical interface, specifically include：
If the electro optic properties selection mode information carried in the configuration port electro optic properties order for receiving is artificial
Selection mode, then the veneer in the case of optical interface link and electrical interface link are normal, using the interface selected by selection
Select the interface specified in information；In the case of the optical interface link and electrical interface link are abnormal, according to what is pre-seted
The interface of acquiescence carries out selective setting to the optical interface and electrical interface；In the optical interface link and electrical interface link only
In the case of having one normally, the interface that selection link is in normal condition is used.
Further,
Electro optic properties selection mode information and interface selection information are carried in configuration port electro optic properties order；
The electro optic properties selection mode information includes：Automatically select mode；
The configuration port electro optic properties order that the network management system that the preferential basis is received is issued is to the ethernet side
The electro optic properties of mouth carry out selective setting to the optical interface and electrical interface, specifically include：
If the electro optic properties selection mode information carried in the configuration port electro optic properties order for receiving is automatic
Selection mode, then the veneer in the case of optical interface link and electrical interface link are normal or abnormal, according to default
The interface of the acquiescence put carries out selective setting to the optical interface and electrical interface；In the optical interface link and electrical interface link
In only one it is normal in the case of, the interface that selection link is in normal condition is used.
Further, methods described also includes：
The selected interface notification for using is given the network management system by the veneer.
Correspondingly, present invention also offers a kind of veneer, at least one optical interface is configured with thereon and at least one electricity connects
Mouthful, ethernet port correspondence connection one optical interface and an electrical interface on the veneer, the veneer include：
Interface option and installment module, for receiving the configuration port electro optic properties order that network management system is issued；
Interface selects detection module, for the configuration port photoelectricity received according to the interface option and installment module
Attribute command is selected the optical interface and electrical interface, export selected resultses；
Interface selects handover module, for being selected to make from the optical interface with the electrical interface according to the selection result
One of interface is used, another interface is disabled.
Further,
Interface selection detection module is additionally operable to not receive configuration port photoelectricity category in the interface option and installment module
When life makes, the interface according to the acquiescence for pre-seting is selected the optical interface and electrical interface, export selected resultses.
Further,
Electro optic properties selection mode information and interface selection information are carried in the configuration port electro optic properties order；
The electro optic properties selection mode information includes：Force selection mode and locking selection mode；
The interface option and installment module is additionally operable to what is carried in the configuration port electro optic properties order that will be received
Electro optic properties selection mode information and interface selection information are sent to the interface selection detection module；
The interface selection detection module is used for according to the configuration port electro optic properties order to the ethernet port
Electro optic properties the optical interface and electrical interface are selected, specifically include：
The interface selection detection module is used for the light carried in the configuration port electro optic properties order for receiving
Electrical properties selection mode information is specified to force when selection mode or locking selection mode in the selection interface selection information
Interface alternatively result.
Further,
Electro optic properties selection mode information and interface selection information are carried in configuration port electro optic properties order；
The electro optic properties selection mode information includes：Artificial selection mode；
The interface option and installment module is additionally operable to what is carried in the configuration port electro optic properties order that will be received
Electro optic properties selection mode information and interface selection information are sent to the interface selection detection module；
The interface selection detection module is used for according to the configuration port electro optic properties order to the ethernet port
Electro optic properties the optical interface and electrical interface are selected, specifically include：
The interface selection detection module is used for the light carried in the configuration port electro optic properties order for receiving
When electrical properties selection mode information is artificial selection mode, in the case of optical interface link and electrical interface link are normal, choosing
Select the interface specified in the interface selection information alternatively result；In the optical interface link and electrical interface link not just
In the case of often, the interface of acquiescence that selection is pre-seted alternatively result；In the optical interface link and electrical interface link
In the case of only one normal, interface of the link in normal condition alternatively result is selected.
Further,
Electro optic properties selection mode information and interface selection information are carried in configuration port electro optic properties order；
The electro optic properties selection mode information includes：Automatically select mode；
The interface option and installment module is additionally operable to what is carried in the configuration port electro optic properties order that will be received
Electro optic properties selection mode information and interface selection information are sent to the interface selection detection module；
The interface selection detection module is used for according to the configuration port electro optic properties order to the ethernet port
Electro optic properties the optical interface and electrical interface are selected, specifically include：
The interface selection detection module is used for the light carried in the configuration port electro optic properties order for receiving
Electrical properties selection mode information for automatically select mode when, it is normal or abnormal in optical interface link and electrical interface link
In the case of, the interface of the acquiescence that selection is pre-seted is selection result；Only one in the optical interface link and electrical interface link
It is individual it is normal in the case of, selection link is in the interface of normal condition alternatively result.
Further,
The interface selection handover module is additionally operable to the selected interface notification for using to the network management system.
With stronger handling, the optic electric interface that can be directed to different qualities flexibly be selected the present invention, simple to operate,
It is convenient, it is also easy to webmaster operating personnel and safeguards and engineering maintenance.
Brief description of the drawings
Fig. 1 is the schematic diagram that the optic electric interface in the prior art on veneer is not multiplexed；
Fig. 2 is the structural representation of the photoelectric interface duplex on veneer in the embodiment of the present invention；
Fig. 3 using interface duplex by webmaster in the embodiment of the present invention by being configured and query processing flow chart；
Fig. 4 to realize interface duplex in the embodiment of the present invention by using veneer functional block diagram；
Fig. 5 using interface to realize interface duplex in the embodiment of the present invention by selecting detection procedure figure；
Fig. 6 to realize that interface duplex is used in the embodiment of the present invention by automatically selecting mode process chart.
Specific embodiment
To make the object, technical solutions and advantages of the present invention become more apparent, below in conjunction with accompanying drawing to the present invention
Embodiment be described in detail.It should be noted that in the case where not conflicting, in the embodiment and embodiment in the application
Feature can mutually be combined.
The present embodiment is applied to be configured with the veneer of at least one optical interface and at least one electrical interface, wherein, the list
Ethernet port correspondence connection one optical interface and an electrical interface on plate, as shown in Fig. 2 having two interfaces, one on veneer
Individual is optical interface I1, and another is electrical interface I2, and same ethernet port is realized by being connected with optical interface and electrical interface simultaneously
The multiplexing of optic electric interface.
The optical interface and electrical interface of each ethernet port corresponding connection on panel on veneer, in business datum
The interface of acquiescence is provided with control direction, the interface of acquiescence can be optical interface, or electrical interface, and can lead to
Crossing the debugging serial ports or debugging serial interface of veneer carries out the setting of default interface.
In this example, the multiplexing method of the optic electric interface based on configuration, including：
Veneer is after power-up initializing completion, if being not received by the configuration port electro optic properties life that webmaster is issued
Order, then the interface of the acquiescence according to configuration, using an interface of connection corresponding with the ethernet port, disables another interface.
Such as acquiescence is optical interface, then using optical interface, disable electrical interface；Vice versa.
If veneer receives the configuration port electro optic properties order that webmaster is issued, then after power-up initializing completion
The veneer preferentially carries out selective configuration according to the order to the electro optic properties of the ethernet port, using one of interface,
Disable another interface.
Meanwhile, veneer supports the option and installment function of ad hoc fashion, i.e., correspondingly in port electro optic properties order is configured
Electro optic properties selection mode information is carried, including：Artificial selection, automatically select, force selection and locking select, support every time choosing
Select one kind therein.Also, the priority of selection mode is successively from low to high：Artificial selection, automatically select, force selection and
Locking is selected.Wherein, the application scenarios of various selection modes are as follows：
The highest priority of locking selection mode, locking selection and forces selection to be used in connecing for photoelectric multiplexing or multiplex
Mouth scene, is easy to control；
Automatically select mode and be applied to the photoelectric multiplexing interface docking scene with equal automatic function selecting, with automatic
Identification link is fine or not and the flexibility advantage of interface is selected from kinetic energy；
Artificial selection mode is applied to enters line interface docking in the case of optic electric interface link is all normal, with link
Artificial operation controllability advantage under normal conditions.
As shown in figure 3, system includes：Network management system, master control borad, veneer.Wherein, port electro optic properties order is configured
Propagation path is：Network management system=》Master control borad=》Veneer；Inquiring about the propagation path of electro optic properties request message is：Network management system
=》Master control borad=》Veneer；Inquiring about the propagation path of electro optic properties response message is：Veneer=》Master control borad=》Network management system；Cut
Transformation transmission of news path is：Veneer=》Master control borad=》Network management system.
As shown in figure 4, veneer passes through included interface option and installment module, interface selection detection module and interface selection
The coordinated of handover module actually accomplishes interface duplex function.
Interface option and installment module mainly completes interface attributes configuration feature.When veneer is initialized, the module can create one
Individual configuration task, the configuration port electro optic properties order that task meeting poll detection master control borad is sent, the handle when the order is received
The electro optic properties selection mode and interface selection information for wherein carrying are preserved, and will carry electro optic properties selection mode and
Interface selection information issues interface selection detection module；
Interface selection detection module is mainly used in completing the decision making function of link detecting and interface selection result.The module exists
Veneer can create an interface selection Detection task when initializing, task meeting poll detects the physical state link of interface link
(connection) information, and to judge Tactic selection, which connects according to the electro optic properties selection mode and interface selection information for receiving
Used as currently used interface, alternatively result is sent to interface selection handover module to the interface that then will be selected to mouth.Such as Fig. 5
It is shown, specifically：
If a, not receiving electro optic properties selection mode, with the default interface of initial configuration alternatively result, this stream
Journey terminates；Otherwise turn next step；
If b, the electro optic properties selection mode for receiving are locking selection modes, with connecing for being specified in interface selection information
Mouth alternatively result, this flow terminates；Otherwise turn next step；
If c, the electro optic properties selection mode for receiving are to force selection mode, with connecing for being specified in interface selection information
Mouth alternatively result, this flow terminates, and otherwise turns next step；
If d, the electro optic properties selection mode for receiving are to automatically select mode, execution automatically selects mode processing stream
Journey, this flow terminates；Otherwise turn next step；
If e, the electro optic properties selection mode for receiving are artificial selection modes, in optical interface and electrical interface link all just
With the interface specified in interface selection information alternatively result when often, this flow terminates, and other situations are with automatically selecting mode
Handling process.
Mode handling process is automatically selected on interface selection detection module, as shown in fig. 6, specifically including：
A, obtain and preserve optical interface link state and electrical interface Link State, and turn next step；
If B, optical interface link state and electrical interface Link State are abnormal, made with the default interface of initial configuration
It is selection result, otherwise turns next step；
If C, optical interface link state are abnormal, electrical interface Link State is normal, then with electrical interface alternatively result,
Otherwise turn next step；
If D, optical interface link state are normal, electrical interface Link State is abnormal, then with optical interface alternatively result,
Otherwise turn next step；
If E, optical interface link state and electrical interface Link State are normal, using the default interface of initial configuration as
Selection result.
The interface selection main finishing service of handover module moves towards handoff functionality.After single board starting, the module is according to interface
Select the selection result that detection module is sent to implement specific business datum control trend, i.e., according to selection result from optical interface
With select to use one of interface in electrical interface, disable another interface, and by the selection result information after switching and
Handover event reports master control borad, then reports network management system through master control borad.If selection result is optical interface, connect using light
Mouthful receive or send data service, electrical interface is then not used.If selection result is electrical interface, connect using electrical interface
Receive or send data service, optical interface is not used.
Veneer can also be directed to the inquiry electro optic properties request message that webmaster or order line are sent, the current configuration knot of response
Really, include whether to configure, select the information such as interface, selection mode, facilitate webmaster to inquire about current selection state.
One of ordinary skill in the art will appreciate that all or part of step in the above method can be instructed by program
Related hardware is completed, and described program can be stored in computer-readable recording medium, such as read-only storage, disk or CD
Deng.Alternatively, all or part of step of above-described embodiment can also be realized using one or more integrated circuits.Accordingly
Ground, each module/unit in above-described embodiment can be realized in the form of hardware, it would however also be possible to employ the shape of software function module
Formula is realized.The present invention is not restricted to the combination of the hardware and software of any particular form.
The preferred embodiments of the present invention are the foregoing is only, is not intended to limit the scope of the present invention.According to
The content of the invention of the invention, can also there is other various embodiments, in the case of without departing substantially from spirit of the invention and its essence, be familiar with
Those skilled in the art is all in the spirit and principles in the present invention when that can make various corresponding changes and deformation according to the present invention
Within, any modification, equivalent substitution and improvements made etc. should be included within the scope of the present invention.
Claims (12)
1. a kind of photoelectric interface duplex method based on configuration, is applied to be configured with least one optical interface and at least one electricity connects
On the veneer of mouth, wherein, ethernet port correspondence connection one optical interface and an electrical interface on the veneer, methods described
Including：
After the power-up, the preferential configuration port electro optic properties order issued according to the network management system for receiving is to described for the veneer
Optical interface carries out selective setting with electrical interface, using one of interface, disables another interface；
Electro optic properties selection mode information and interface selection information are carried in the configuration port electro optic properties order；
Electro optic properties selection mode includes：Artificial selection, or automatically select, or force selection and locking selection.
2. the method for claim 1, it is characterised in that also include：
The veneer after the power-up, if not receiving the configuration port electro optic properties order, according to connecing for the acquiescence that pre-sets
Mouth carries out selective setting to the optical interface and electrical interface, using one of interface, disables another interface.
3. the method for claim 1, it is characterised in that：
The electro optic properties selection mode information includes：Force selection mode and locking selection mode；
The configuration port electro optic properties order that the network management system that the preferential basis is received is issued is to the ethernet port
Electro optic properties carry out selective setting to the optical interface and electrical interface, specifically include：
If the electro optic properties selection mode information carried in the configuration port electro optic properties order for receiving is selected for pressure
Mode or locking selection mode, then the veneer selection use the interface specified in the interface selection information.
4. the method as described in any one in claims 1 to 3, it is characterised in that：
The electro optic properties selection mode information includes：Artificial selection mode；
The configuration port electro optic properties order that the network management system that the preferential basis is received is issued is to the ethernet port
Electro optic properties carry out selective setting to the optical interface and electrical interface, specifically include：
If the electro optic properties selection mode information carried in the configuration port electro optic properties order for receiving is artificial selection
Mode, then in the case of optical interface link and electrical interface link are normal, selection selects letter to the veneer using the interface
The interface specified in breath；In the case of the optical interface link and electrical interface link are abnormal, according to the acquiescence for pre-seting
Interface selective setting is carried out to the optical interface and electrical interface；Only one in the optical interface link and electrical interface link
It is individual it is normal in the case of, the interface that selection link is in normal condition is used.
5. the method as described in any one in claims 1 to 3, it is characterised in that：
The electro optic properties selection mode information includes：Automatically select mode；
The configuration port electro optic properties order that the network management system that the preferential basis is received is issued is to the ethernet port
Electro optic properties carry out selective setting to the optical interface and electrical interface, specifically include：
If the electro optic properties selection mode information carried in the configuration port electro optic properties order for receiving is to automatically select
Mode, then the veneer in the case of optical interface link and electrical interface link are normal or abnormal, according to what is pre-seted
The interface of acquiescence carries out selective setting to the optical interface and electrical interface；In the optical interface link and electrical interface link only
In the case of having one normally, the interface that selection link is in normal condition is used.
6. method as claimed in claim 1 or 2, it is characterised in that also include：
The selected interface notification for using is given the network management system by the veneer.
7. a kind of veneer, is configured with least one optical interface and at least one electrical interface, the ethernet side on the veneer thereon
Mouth correspondence connection one optical interface and an electrical interface, the veneer include：
Interface option and installment module, for receiving the configuration port electro optic properties order that network management system is issued；
Interface selects detection module, for the configuration port electro optic properties received according to the interface option and installment module
Order is selected the optical interface and electrical interface, export selected resultses；
Interface selects handover module, for being selected to use it from the optical interface with the electrical interface according to the selection result
In an interface, disable another interface；
Electro optic properties selection mode information and interface selection information are carried in the configuration port electro optic properties order；
Electro optic properties selection mode includes：Artificial selection, or automatically select, or force selection and locking selection.
8. veneer as claimed in claim 7, it is characterised in that：
Interface selection detection module is additionally operable to not receive configuration port electro optic properties life in the interface option and installment module
When making, the interface according to the acquiescence for pre-seting is selected the optical interface and electrical interface, export selected resultses.
9. veneer as claimed in claim 7, it is characterised in that：
The electro optic properties selection mode information includes：Force selection mode and locking selection mode；
The interface option and installment module is additionally operable to the photoelectricity carried in the configuration port electro optic properties order that will be received
Attributions selection mode information and interface selection information are sent to the interface selection detection module；
The interface selection detection module is used for the light according to the configuration port electro optic properties order to the ethernet port
Electrical properties are selected the optical interface and electrical interface, are specifically included：
The interface selection detection module is used for the photoelectricity category carried in the configuration port electro optic properties order for receiving
Sexual behavior mode mode information selects the interface specified in the interface selection information to force when selection mode or locking selection mode
Alternatively result.
10. the veneer as described in any one in claim 7~9, it is characterised in that：
The electro optic properties selection mode information includes：Artificial selection mode；
The interface option and installment module is additionally operable to the photoelectricity carried in the configuration port electro optic properties order that will be received
Attributions selection mode information and interface selection information are sent to the interface selection detection module；
The interface selection detection module is used for the light according to the configuration port electro optic properties order to the ethernet port
Electrical properties are selected the optical interface and electrical interface, are specifically included：
The interface selection detection module is used for the photoelectricity category carried in the configuration port electro optic properties order for receiving
When Sexual behavior mode mode information is artificial selection mode, in the case of optical interface link and electrical interface link are normal, institute is selected
State the interface specified in interface selection information alternatively result；It is abnormal in the optical interface link and electrical interface link
In the case of, the interface of acquiescence that selection is pre-seted alternatively result；In the optical interface link and electrical interface link only
In the case of one normal, interface of the link in normal condition alternatively result is selected.
Veneer in 11. such as claim 7~9 as described in any one, it is characterised in that：
The electro optic properties selection mode information includes：Automatically select mode；
The interface option and installment module is additionally operable to the photoelectricity carried in the configuration port electro optic properties order that will be received
Attributions selection mode information and interface selection information are sent to the interface selection detection module；
The interface selection detection module is used for the light according to the configuration port electro optic properties order to the ethernet port
Electrical properties are selected the optical interface and electrical interface, are specifically included：
The interface selection detection module is used for the photoelectricity category carried in the configuration port electro optic properties order for receiving
Sexual behavior mode mode information for when automatically selecting mode, optical interface link and electrical interface link be normal or abnormal situation
Under, the interface of the acquiescence that selection is pre-seted is selection result；Only has one in the optical interface link and electrical interface link just
In the case of often, interface of the link in normal condition alternatively result is selected.
Veneer in 12. such as claim 7~9 as described in any one, it is characterised in that：
The interface selection handover module is additionally operable to the selected interface notification for using to the network management system.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210045695.6A CN103297117B (en) | 2012-02-27 | 2012-02-27 | Reuse method of photoelectricity port based on configuration and single board |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210045695.6A CN103297117B (en) | 2012-02-27 | 2012-02-27 | Reuse method of photoelectricity port based on configuration and single board |
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| CN103297117B true CN103297117B (en) | 2017-05-24 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106330488A (en) * | 2015-06-19 | 2017-01-11 | 中兴通讯股份有限公司 | Method and device for configuring attribute |
| CN107276674A (en) * | 2017-08-08 | 2017-10-20 | 深圳市三旺通信技术有限公司 | A kind of photoelectric port multiplex circuit of ethernet device |
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| US7461179B1 (en) * | 2004-04-30 | 2008-12-02 | Cisco Technology, Inc. | Universal SFP support |
| CN201345715Y (en) * | 2009-02-09 | 2009-11-11 | 华为技术有限公司 | Device for multiplexing of photoelectric interfaces |
| CN102347992A (en) * | 2010-07-29 | 2012-02-08 | 研祥智能科技股份有限公司 | Network device and network server capable of supporting photoelectric switching |
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2012
- 2012-02-27 CN CN201210045695.6A patent/CN103297117B/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US7461179B1 (en) * | 2004-04-30 | 2008-12-02 | Cisco Technology, Inc. | Universal SFP support |
| CN1725762A (en) * | 2004-07-23 | 2006-01-25 | 杭州华为三康技术有限公司 | Implementation method of Ethernet photoelectric interface duplex |
| CN201345715Y (en) * | 2009-02-09 | 2009-11-11 | 华为技术有限公司 | Device for multiplexing of photoelectric interfaces |
| CN102347992A (en) * | 2010-07-29 | 2012-02-08 | 研祥智能科技股份有限公司 | Network device and network server capable of supporting photoelectric switching |
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