CN102164076A - Network interface redundancy realization method, redundant network interface device and switch equipment - Google Patents
Network interface redundancy realization method, redundant network interface device and switch equipment Download PDFInfo
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- CN102164076A CN102164076A CN2011100666767A CN201110066676A CN102164076A CN 102164076 A CN102164076 A CN 102164076A CN 2011100666767 A CN2011100666767 A CN 2011100666767A CN 201110066676 A CN201110066676 A CN 201110066676A CN 102164076 A CN102164076 A CN 102164076A
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Abstract
The invention discloses a network interface redundancy realization method, a redundant network interface device and switch equipment. The redundant network interface device comprises a first hardware interface and a controller, wherein the first hardware interface is used for coupling a received input signal by using a third isolation transformer and a first isolation transformer, transmitting the coupled signal to a first logical port, coupling the signal by using the third isolation transformer and a second isolation transformer, and transmitting the coupled signal to a second logical port; and the controller is used for controlling the first or second logical port to process the received input signal, controlling the first logical port to transmit the output signal and output the coupled signal from the first hardware interface after the output signal is coupled by the first and third isolation transformers, and when the first logical port fails, controlling the second logical port to transmit the output signal and output the coupled signal from the first hardware interface after the output signal is coupled by the second and third isolation transformers. Redundancy switching control is realized by two stages of isolation transformers, high reliability and universality are ensured, and the special hardware support of user equipment is not required.
Description
Technical field
The present invention relates to communication technical field, refer to the redundant implementation method of network interface, Redundant Network Port device and switching equipment in a kind of switching equipment especially.
Background technology
When switching equipment is realized communicating by letter with subscriber equipment, couple together by the network interface of netting twine with switching equipment and subscriber equipment.Wherein, the logic port in the network interface of switching equipment is realized transfer of data by the hardware interface and the subscriber equipment that are provided with.But owing to reasons such as network interface wirings; cause the logic port fault normally to use through regular meeting owing to suffering to be struck by lightning; for head it off; start with from lightning Protection Design mostly at present; solve from the source; but fault remains inevitably, strengthens the protection design and can only reduce probability of malfunction, and its effect is very limited.Therefore, also can adopt the network interface Redundancy Design to realize usually, when the communication path of a logic port breaks down in network interface, can switch to the communication path of another logic port, realize directly, network interface emergency protection efficiently.At present, the network interface Redundancy Design has two kinds of ways usually:
A kind of is respectively corresponding two hardware interfaces of two logic ports on the switching equipment, two hardware interfaces cooperate with two hardware interfaces on the subscriber equipment by two netting twines respectively, connect into two paths, two paths are redundant mutually, in case the path of a logic port correspondence breaks down, the path that then can automatically switch to another logic port correspondence gets on.This redundant handoff procedure is realized switching by software exchange control, do not have handover operation physically, just software control message forwarding path is from which interface turnover, and this mode software is realized complicated, applied environment is single, can only be used on the subscriber equipment that has double nip.
Another kind is that a hardware interface only is set on the subscriber equipment, be connected on two hardware interfaces of switching equipment by special 1 commentaries on classics, 2 netting twines, internal or external switching device is set on the switching equipment, when the communication path of a logic port of switching equipment breaks down, pass through diverter switch, the physical connection of this communication path of open failure logic port switches to the communication path of another logic port with connecting path, to guarantee the transmission of data.As long as this mode subscriber equipment has an interface, the switching device that switches usefulness is integrated on the switching equipment, but because the introducing of switching device, will influence the reliability of signal transmission, cause the actual waveform of receiving and transmitting signal can't be up to standard, the state transformation that switch control causes usually causes that it also is limited that the reliability of various signal concussions and switching device itself causes its electrical protection characteristic, and therefore this mode can cause the reliability of switching equipment itself to reduce.
As seen, existing network interface Redundancy Design implementation, or need subscriber equipment that double nip is set, or need special 1 commentaries on classics, 2 netting twines, its versatility and compatibility are all poor.And existing scheme realizes complicated, and all than higher, the redundant reliability of switching of its network interface is lower to the requirement of equipment software and hardware.
Summary of the invention
The embodiment of the invention provides the redundant implementation method of a kind of network interface, Redundant Network Port device and switching equipment, in order to solve the low problem of reliability that exists network interface Redundancy Design versatility and poor compatibility, network interface redundancy to switch in the prior art.
A kind of Redundant Network Port device comprises: controller, first logic port and first isolating transformer that is connected with first logic port, second logic port and second isolating transformer that is connected with second logic port, first hardware interface and the 3rd isolating transformer that is connected with first hardware interface; Described first isolating transformer, second isolating transformer all link to each other with the 3rd isolating transformer;
Described first hardware interface, the input signal that is used for receiving sends to first logic port after the 3rd isolating transformer and the coupling of first isolating transformer, and the input signal that receives is sent to second logic port after the 3rd isolating transformer and the coupling of second isolating transformer;
Described controller is used to control first logic port or second logic port is handled the input signal that receives; And control described first logic port transmission output signal, after first isolating transformer and the coupling of the 3rd isolating transformer, export from first hardware interface; When first logic port breaks down, control second logic port and send output signal after second isolating transformer and the coupling of the 3rd isolating transformer, export from first hardware interface.
A kind of switching equipment comprises: above-mentioned Redundant Network Port device.
The redundant implementation method of a kind of network interface comprises:
When first hardware interface receives input signal, send to first logic port after transformer coupled through the 3rd isolating transformer and first, and with the input signal that receives through the 3rd isolating transformer and second isolating transformer coupling back to the transmission of second logic port, first logic port controlled by controller or second logic port is handled the input signal that receives;
Controller is controlled described first logic port and is sent output signal,, exports from first hardware interface with after the 3rd isolating transformer that is connected with first hardware interface is coupled through first isolating transformer; When first logic port breaks down, control second logic port send output signal through second isolating transformer with after the 3rd isolating transformer that is connected with first hardware interface is coupled, export from first hardware interface.
Beneficial effect of the present invention is as follows:
The redundant implementation method of the network interface that the embodiment of the invention provides, Redundant Network Port device and switching equipment, this device only uses a hardware interface, realize redundant switching controls by the two-stage isolating transformer, make a logic port break down and to switch to another logic port smoothly that this mode need not the user device hardware support of opposite end in the inner realization of switching equipment, do not need control switch to control switching yet, simple in structure, reliability height, versatility and compatible strong.Realize partly that at the network interface of switching equipment path switches, can under the situation that does not change the existing network configuration, be applied in any network environment.
Description of drawings
Fig. 1 is the structural representation of Redundant Network Port device in the embodiment of the invention;
Fig. 2 is the structural representation after the Redundant Network Port device strengthens in the embodiment of the invention;
Fig. 3 is the accepting state schematic diagram of redundancy of effort pattern in the embodiment of the invention;
Fig. 4 is the transmit status schematic diagram of redundancy of effort pattern in the embodiment of the invention;
Fig. 5 is the working state schematic representation of nonredundancy mode of operation in the embodiment of the invention.
Embodiment
Being provided with at network interface redundancy in the prior art needs double nip or special netting twine support, the problem of versatility and poor compatibility, the embodiment of the invention provides a kind of Redundant Network Port device, this device can be arranged on switching equipment, in the time of only can realizing logic port fault when switching equipment, can switch to the communication path of another logic port by a hardware interface.
The Redundant Network Port device that the embodiment of the invention provides, its structure comprises the 3rd isolating transformer of second isolating transformer, first hardware interface and connection of first isolating transformer, second logic port and the connection of controller, first logic port and connection as shown in Figure 1; Wherein, first isolating transformer, second isolating transformer all link to each other with the 3rd isolating transformer.
Above-mentioned first logic port is the PHY1 port shown in Fig. 1, second logic port is the PHY2 port, first isolating transformer is the isolating transformer 1 shown in Fig. 1, second isolating transformer is the isolating transformer 2 shown in Fig. 1, the 3rd isolating transformer is the isolating transformer 3 shown in Fig. 1, first hardware interface is the RJ45 interface that links to each other with isolating transformer 3 shown in Fig. 1, and the RJ45 interface can connect subscriber equipment by netting twine.
In the device redundancey network interface shown in Figure 1, first hardware interface is used for receiving inputted signal, through the 3rd isolating transformer coupling, sends and transformer coupledly sends to second logic port through second to first logic port through the first transformer coupled back again.That is to say, input signal can transmit simultaneously to two logic ports after entering first hardware interface, is which by controller according to the logic port that is in normal operating condition at present, decide by which logic port and handle the input signal that receives, the input signal that another logic port receives then can abandon.
In the device redundancey network interface shown in Figure 1, controller is used to control first logic port or second logic port is handled the input signal that receives; And control first logic port transmission output signal, after first isolating transformer and the coupling of the 3rd isolating transformer, export from first hardware interface; When first logic port breaks down, control second logic port and send output signal after second isolating transformer and the coupling of the 3rd isolating transformer, export from first hardware interface.
Preferably, first end (C), second end (E) of the first utmost point of first isolating transformer link to each other the centre cap of the first utmost point (D) ground connection with first logic port as shown in Figure 1; First end (A) of the first isolating transformer time utmost point is vacant, the centre cap (F) of the inferior utmost point links to each other with first end (C) of the first utmost point of the 3rd isolating transformer, and second end (B) of the inferior utmost point links to each other with the centre cap (D) of the first utmost point of the 3rd isolating transformer.Second isolating transformer just first end (C), second end (E) of the utmost point links to each other the centre cap of the first utmost point (D) ground connection with second logic port; First end (A) of the second isolating transformer time utmost point links to each other with the centre cap (D) of the first utmost point of the 3rd isolating transformer, the centre cap (F) of the inferior utmost point links to each other with second end (E) of the first utmost point of the 3rd isolating transformer, and second end (B) of the inferior utmost point is vacant.The inferior utmost point first end (A), second end (B) of the 3rd isolating transformer link to each other with first hardware interface, the centre cap of the inferior utmost point (F) ground connection.
Preferably, two divider resistance R of series connection add high level VCC in the middle of two divider resistance R between the two ends of the first utmost point of the isolating transformer that links to each other with logic port, realize the load balancing coupling to circuit, and for example divider resistance R can be 50 Europe.
As shown in Figure 2, be the structure after Redundant Network Port device shown in Figure 1 is strengthened, specifically can carry out twice enhancing design to device shown in Figure 1.
Strengthen design for the first time: on Redundant Network Port basis shown in Figure 1, second hardware interface and the 4th isolating transformer that is connected have been increased, and between second isolating transformer and the 3rd isolating transformer, being provided with first switching device, the 4th isolating transformer links to each other with second isolating transformer; Do not increase the second switch device this moment, and first isolating transformer is not connected with the 4th isolating transformer.The 4th isolating transformer RJ45 interface that to be the isolating transformer 4 shown in Fig. 2 promptly link to each other with isolating transformer 4 with second hardware interface, first switching device is the switch 1 shown in Fig. 2.
After being provided with second hardware interface, when first switching device is opened, first logic port forms first transmission channel by first isolating transformer, the 3rd isolating transformer and first hardware interface, and second logic port forms second transmission channel by second isolating transformer, the 4th isolating transformer and second hardware interface.First hardware interface can be connected a netting twine respectively with second hardware interface.When first hardware interface receives input signal, after the 3rd isolating transformer and the coupling of first isolating transformer, send to first logic port, when first logic port sends output signal, after first isolating transformer and the coupling of the 3rd isolating transformer, export from first hardware interface, when second hardware interface receives input signal, after the 4th isolating transformer and the coupling of second isolating transformer, send to second logic port, when second logic port sends output signal, after second isolating transformer and the coupling of the 4th isolating transformer, export from second hardware interface.
When first switching device was closed, second hardware interface was vacant, the first hardware interface work, and this moment, the Redundant Network Port device was Redundant Network Port device as shown in fig. 1.
The 4th isolating transformer that increases in the device shown in Figure 2 just first end (C) of the utmost point links to each other with the centre cap (F) of the second isolating transformer time utmost point, just the centre cap (D) of the utmost point links to each other with second end (B) of the second isolating transformer time utmost point, and second end (E) of the first utmost point is vacant; First end (A), second end (B) of the 4th isolating transformer time utmost point link to each other the centre cap of the inferior utmost point (F) ground connection with second hardware interface.
Strengthen design for the second time:, between first isolating transformer and the 4th isolating transformer, the second switch device is set, i.e. switch shown in Fig. 22 strengthening on the basis of design for the first time.When the second switch device was closed, first switching device was opened, and first hardware interface is vacant; At this moment:
Second hardware interface is used for receiving inputted signal, through the 4th isolating transformer coupling, sends and transformer coupledly sends to second logic port through second to first logic port through first isolating transformer coupling back again.
Controller is used to control first logic port or second logic port is handled the input signal that receives; And control first logic port transmission output signal, after first isolating transformer and the coupling of the 4th isolating transformer, export from second hardware interface; When first logic port breaks down, control second logic port and send output signal after second isolating transformer and the coupling of the 4th isolating transformer, export from second hardware interface.
Preferably, in the said apparatus, first end (A) that first switching device is arranged on the second isolating transformer time utmost point and the 3rd isolating transformer be just between the centre cap (D) of the utmost point, and the second switch device is arranged between second end (E) of the utmost point at the beginning of first end (A) of the first isolating transformer time utmost point and the 4th isolating transformer.
Preferably, in the said apparatus, when isolating transformer is coupled to input signal and output signal, wherein first isolating transformer and second isolating transformer are coupled to output signal with the first coupling ratio that is provided with, and the 3rd isolating transformer and the 4th isolating transformer are used for the inverse of the first coupling ratio output signal being coupled; Accordingly, first isolating transformer and second isolating transformer are coupled to input signal with the inverse of the first coupling ratio, and the 3rd isolating transformer and the 4th isolating transformer are used for the first coupling ratio input signal being coupled.
The above-mentioned Redundant Network Port device that the embodiment of the invention provides, so long as by the corresponding hardware interface of at least two logic ports, and by the signal undistorted coupling of two-stage isolating transformer realization more than 1 pair, the output signal that guarantees one of them logic port is for normal, the output state of other logic ports is a high impedance, and output signal does not get final product.In concrete design of drive circuit, be not limited to adopt the centre tapped isolating transformer that has as shown in figs. 1 and 2.Further alternative, the isolating transformer that is used for signal coupling also can be not limited to two-stage, and can be set to multistage, as long as finally can realize the undistorted coupling of 1:1 of signal.
By the use of switching device, can make above-mentioned Redundant Network Port design alternative be operated in redundant mode still is nonredundant normal mode of operation.When not using switching device as shown in Figure 1, then can only be operated in redundant mode.
Redundant Network Port device is extendible is for this, the logic port that uses can have a plurality of, hardware interface of the redundant use of a plurality of logic ports, what can also expand is on the basis of as shown in Figure 2 device, logic port and hardware interface all are not limited to two, when a plurality of, hardware interface of the redundant use of two or more logic ports that can be adjacent.That is to say, as shown in Figure 2 be two groups of hardware interfaces and logic port, can expand on this basis increases one or more groups hardware interface and logic port, and as shown in Figure 2, the isolating transformer that a logic port topmost connects, with between hardware interface is connected bottom the isolating transformer switching device is set, and isolating transformer that each logic port connects with on switching device is set between the isolating transformer that is connected of one group hardware interface.
The Redundant Network Port device that provides based on the embodiment of the invention, the embodiment of the invention also provides a kind of network interface redundant implementation method, when this Redundant Network Port device uses first hardware interface to be operated in the redundancy of effort pattern, this moment, input signal and output signal were all transmitted through first hardware interface, and concrete transport stream signal journey comprises:
The flow process of (1) first hardware interface receiving inputted signal.After first hardware interface received input signal, Redundant Network Port device shown in Figure 1 was in accepting state, and its input signals state as shown in Figure 3.
When first hardware interface receives input signal, send to first logic port after transformer coupled through the 3rd isolating transformer and first, and through the 3rd isolating transformer and second is transformer coupledly sent to second logic port.First logic port controlled by controller or second logic port is handled the input signal that receives.
As shown in Figure 3, when the Redundant Network Port device was in accepting state, the input signals direction of reception was shown in the dotted line of band arrow among the figure.
From RJ45 interface receiving inputted signal, be coupled through isolating transformer 3, be coupled through isolating transformer 1 again, be sent to the PHY1 port.Simultaneously,, be coupled, be coupled through isolating transformer 2 again, be sent to the PHY2 port through isolating transformer 3 from RJ45 interface receiving inputted signal.
For example: isolating transformer 3 is coupled to input signal according to 2: 1 coupling ratio, from the input of AB end, and from CD and the output respectively of DE end; Isolating transformer 1 is coupled to input signal according to 1: 2 coupling ratio, from the input of FB end, from the output of CE end; Isolating transformer 2 also is coupled to input signal according to 1: 2 coupling ratio, from the input of AF end, from the output of CE end; The signal that finally reaches PHY1 port and PHY2 port all can be realized the undistorted coupling of signal of 1:1, has guaranteed the correctness that signal receives.Certainly the coupling ratio of each isolating transformer is to select, as long as guarantee to realize the undistorted coupling of signal of 1:1.
(2) flow process of transmission output signal.Controller is controlled transmission state that first logic port or second logic port send output signal as shown in Figure 4.
Controller is controlled first logic port and is sent output signal,, exports from first hardware interface with after the 3rd isolating transformer that is connected with first hardware interface is coupled through first isolating transformer.
When first logic port breaks down, control second logic port and send output signal, with after the 3rd isolating transformer that is connected with first hardware interface is coupled, export from first hardware interface through second isolating transformer.
For example shown in Figure 4, the PHY1 port just often, controller is selected to be responsible for sending output signal by the PHY1 port, output signal sends to the RJ45 interface through isolating transformer 1 and isolating transformer 3 couplings, shown in the dotted line of band arrow among Fig. 4; The PHY2 port then is in high impedance status, can not send signal, and the path shown in the dotted line of band arrow of making fork among Fig. 4 is obstructed, thereby data collision and signal when having avoided redundant mode disturb.When the PHY1 port failure, can switch to the PHY2 port and send output signal, this moment, the PHY1 port was in high impedance status, thereby realized that path switches and the redundant effect of network interface.
For example shown in Figure 4, when the PHY1 port sent output signal, isolating transformer 1 was coupled to output signal according to 2: 1 coupling ratio, from the input of CE end, and from the output of FB end; Isolating transformer 3 is coupled to output signal according to 1: 2 coupling ratio, from the input of CD end, from the output of AB end.When the PHY2 port sent output signal, isolating transformer 1 was coupled to output signal according to 2: 1 coupling ratio, from the input of CE end, and from the output of AF end; Isolating transformer 3 is coupled to output signal according to 1: 2 coupling ratio, from the input of DE end, from the output of AB end.The signal that finally reaches the RJ45 interface all can be realized the undistorted coupling of signal of 1:1, has guaranteed the correctness that signal receives.
Improve when as shown in Figure 2 the Redundant Network Port device being carried out strengthening the first time, the 4th isolating transformer of second hardware interface and connection is set, and after between second isolating transformer and the 3rd isolating transformer first switching device being set, open first switching device, make first logic port form first transmission channel by first isolating transformer, the 3rd isolating transformer and first hardware interface, second logic port forms second transmission channel by second isolating transformer, the 4th isolating transformer and second hardware interface; During closure first switching device, make second hardware interface vacant.Open switch this moment just can make the Redundant Network Port device be operated in non-redundant mode, under the promptly normal mode of operation.Closing Switch then is operated under the redundant mode, and is identical with the situation of not belt switch device shown in Figure 1.Certainly after having increased the second switch device, then need two switching devices are all opened just and can be operated under the non-redundant mode
Two paths that form when as shown in Figure 5, switching device is opened are shown in the dotted line of band arrow among the figure.The signal of two logic port transmissions without some common isolating transformers, therefore can not occur coupling without identical path yet, two paths are transmission signals separately, be equivalent to two standard network interfaces, do not disturb mutually, guaranteed the normal use of non-redundant mode.
Improve when as shown in Figure 2 the Redundant Network Port device being carried out strengthening the first time, after between second isolating transformer and the 3rd isolating transformer second switch device being set, the closed second switch device is opened first switching device, make first hardware interface vacant, at this moment, this Redundant Network Port device uses second hardware interface to be operated in the redundancy of effort pattern, and this moment, input signal and output signal were all transmitted through second hardware interface.Concrete transport stream signal journey comprises:
When second hardware interface receives input signal, send to first logic port after transformer coupled through the 4th isolating transformer and first, and transformer coupledly send to second logic port through the 4th isolating transformer and second, first logic port controlled by controller or second logic port is handled the input signal that receives.
When needing to send output signal, controller is controlled first logic port and is sent output signal, after first isolating transformer and the coupling of the 4th isolating transformer, exports from second hardware interface; When described first logic port breaks down, control second logic port and send output signal after second isolating transformer and the coupling of the 4th isolating transformer, export from second hardware interface.
Process when this process and use first hardware interface is similar, is not described in detail herein.
The redundant implementation method of the network interface that the embodiment of the invention provides, Redundant Network Port device and switching equipment, this device only uses a hardware interface, carry out the signal coupling by the two-stage isolating transformer, realize redundant switching controls, make a logic port break down and to switch to another logic port smoothly, this mode is in the inner realization of switching equipment, need not the user device hardware support of opposite end, do not need control switch to control switching yet, make single hardware interface possess redundant ability, simple in structure, reliability height, versatility and compatible strong.Realize partly that at the network interface of switching equipment path switches, can under the situation that does not change the existing network configuration, be applied in any network environment.
By the setting of switching device and two hardware interfaces, then can realize the transmission of non-redundant mode double-channel signal, each port and interface all can be used as port and interface; Simultaneously, by the wherein signal transmission of any hardware interface realization redundant mode, using in two logic ports of same hardware interface does not need one of output signal to be in high impedance, thereby the assurance signal is normally transmitted, when a logic port fault, another logical end eloquence can be enabled, this process is controlled by controller, avoided switching device to switch the signal that conversion caused concussion and distortion that the hardware path causes circuit, avoided signal waveform possibility not up to standard, guarantee the stability of signal quality and circuit, improved the reliability of switching equipment itself.
Above-mentioned Redundant Network Port device uses easy two-layer isolating transformer to realize the multichannel coupling, and cost is low, realize easily, and extensibility is strong.This device does not need to increase other chips, on network interface electrical protection characteristic, does not weaken, and strengthens to some extent on the contrary, and uses flexibly, can design a plurality of port redundancies as required.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (12)
1. Redundant Network Port device, it is characterized in that, comprising: controller, first logic port and first isolating transformer that is connected with first logic port, second logic port and second isolating transformer that is connected with second logic port, first hardware interface and the 3rd isolating transformer that is connected with first hardware interface; Described first isolating transformer, second isolating transformer all link to each other with the 3rd isolating transformer;
Described first hardware interface, the input signal that is used for receiving sends to first logic port after the 3rd isolating transformer and the coupling of first isolating transformer, and the input signal that receives is sent to second logic port after the 3rd isolating transformer and the coupling of second isolating transformer;
Described controller is used to control first logic port or second logic port is handled the input signal that receives; And control described first logic port transmission output signal, after first isolating transformer and the coupling of the 3rd isolating transformer, export from first hardware interface; When first logic port breaks down, control second logic port and send output signal after second isolating transformer and the coupling of the 3rd isolating transformer, export from first hardware interface.
2. device as claimed in claim 1 is characterized in that, described first isolating transformer just first end, second end of the utmost point links to each other the centre cap ground connection of the first utmost point with first logic port; First end of the described first isolating transformer time utmost point is vacant, the centre cap of the inferior utmost point links to each other with first end of the first utmost point of the 3rd isolating transformer, and second end of the inferior utmost point links to each other with the centre cap of the first utmost point of the 3rd isolating transformer;
Described second isolating transformer just first end, second end of the utmost point links to each other the centre cap ground connection of the first utmost point with second logic port; First end of the described second isolating transformer time utmost point links to each other with the centre cap of the first utmost point of the 3rd isolating transformer, the centre cap of the inferior utmost point links to each other with second end of the first utmost point of the 3rd isolating transformer, and second end of the inferior utmost point is vacant;
The inferior utmost point first end, second end of described the 3rd isolating transformer link to each other the centre cap ground connection of the inferior utmost point with first hardware interface.
3. device as claimed in claim 1 or 2, it is characterized in that, also comprise: second hardware interface and the 4th isolating transformer that is connected with second hardware interface, be arranged on first switching device between described second isolating transformer and the 3rd isolating transformer, described the 4th isolating transformer links to each other with second isolating transformer;
When described first switching device is opened, described first logic port forms first transmission channel by first isolating transformer, the 3rd isolating transformer and first hardware interface, and described second logic port forms second transmission channel by second isolating transformer, the 4th isolating transformer and second hardware interface;
When described first switching device was closed, second hardware interface was vacant.
4. device as claimed in claim 3, it is characterized in that, described the 4th isolating transformer just first end of the utmost point links to each other with the centre cap of the second isolating transformer time utmost point, and the centre cap of the first utmost point links to each other with second end of the second isolating transformer time utmost point, and second end of the first utmost point is vacant;
First end, second end of described the 4th isolating transformer time utmost point link to each other the centre cap ground connection of the inferior utmost point with second hardware interface.
5. device as claimed in claim 3 is characterized in that, also comprises: be arranged on the second switch device between described first isolating transformer and the 4th isolating transformer;
When described second switch device was closed, described first switching device was opened, and described first hardware interface is vacant;
Described second hardware interface, be used for the input signal that to receive and send to first logic port after transformer coupled, and the input signal that receives is sent to second logic port after transformer coupled through the 4th isolating transformer and second through the 4th isolating transformer and first;
Described controller is used to control first logic port or second logic port is handled the input signal that receives; And control described first logic port with output signal after the coupling of first isolating transformer and the 4th isolating transformer, export from second hardware interface; When first logic port breaks down, control second logic port and will send output signal after second isolating transformer and the coupling of the 4th isolating transformer, export from second hardware interface.
6. device as claimed in claim 5 is characterized in that, between first end that described first switching device is arranged on the second isolating transformer time utmost point and the centre cap of the utmost point at the beginning of the 3rd isolating transformer; Between first end that described second switch device is arranged on the first isolating transformer time utmost point and second end of the utmost point at the beginning of the 4th isolating transformer.
7. device as claimed in claim 3, it is characterized in that, described first isolating transformer and second isolating transformer are used for the first coupling ratio that is provided with output signal being coupled, and described the 3rd isolating transformer and the 4th isolating transformer are used for the inverse of the described first coupling ratio output signal being coupled;
Described first isolating transformer and second isolating transformer are used for the inverse of the described first coupling ratio input signal being coupled, and described the 3rd isolating transformer and the 4th isolating transformer are used for the described first coupling ratio input signal being coupled.
8. a switching equipment is characterized in that, comprising: as the arbitrary described Redundant Network Port device of claim 1-7.
9. the redundant implementation method of network interface is characterized in that, comprising:
When first hardware interface receives input signal, after the 3rd isolating transformer and the coupling of first isolating transformer, send to first logic port, and with the input signal that receives through the 3rd isolating transformer and second isolating transformer coupling back to the transmission of second logic port, first logic port controlled by controller or second logic port is handled the input signal that receives;
Controller is controlled described first logic port and is sent output signal,, exports from first hardware interface with after the 3rd isolating transformer that is connected with first hardware interface is coupled through first isolating transformer; When first logic port breaks down, control second logic port send output signal through second isolating transformer with after the 3rd isolating transformer that is connected with first hardware interface is coupled, export from first hardware interface.
10. method as claimed in claim 9 is characterized in that, also comprises: the 4th isolating transformer of second hardware interface and connection is set, and between described second isolating transformer and the 3rd isolating transformer first switching device is set;
When first switching device is opened, described first logic port forms first transmission channel by first isolating transformer, the 3rd isolating transformer and first hardware interface, when first hardware interface receives input signal, after the 3rd isolating transformer and the coupling of first isolating transformer, send to first logic port, when first logic port sends output signal, after first isolating transformer and the coupling of the 3rd isolating transformer, export from first hardware interface; And described second logic port forms second transmission channel by second isolating transformer, the 4th isolating transformer and second hardware interface, when second hardware interface receives input signal, after the 4th isolating transformer and the coupling of second isolating transformer, send to second logic port, when second logic port sends output signal, after second isolating transformer and the coupling of the 4th isolating transformer, export from second hardware interface;
When first switching device is closed, make second hardware interface vacant.
11. method as claimed in claim 10 is characterized in that, also comprises: between first isolating transformer and the 4th isolating transformer the second switch device is set, the closed second switch device is opened first switching device, makes first hardware interface vacant;
When second hardware interface receives input signal, send to first logic port after transformer coupled through the 4th isolating transformer and first, and the input signal that receives sent to second logic port after transformer coupled through the 4th isolating transformer and second, first logic port controlled by controller or second logic port is handled the input signal that receives;
Controller is controlled described first logic port and is sent output signal, after first isolating transformer and the coupling of the 4th isolating transformer, exports from second hardware interface; When described first logic port breaks down, control second logic port and send output signal after second isolating transformer and the coupling of the 4th isolating transformer, export from second hardware interface.
12. as claim 10 or 11 described methods, it is characterized in that, described first isolating transformer and second isolating transformer are coupled to output signal with the first coupling ratio that is provided with, and described the 3rd isolating transformer and the 4th isolating transformer are coupled to output signal with the inverse of the described first coupling ratio; Accordingly,
Described first isolating transformer and second isolating transformer are coupled to input signal with the inverse of the described first coupling ratio, and described the 3rd isolating transformer and the 4th isolating transformer are coupled to input signal with the described first coupling ratio.
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| CN 201110066676 CN102164076B (en) | 2011-03-18 | 2011-03-18 | Network interface redundancy realization method, redundant network interface device and switch equipment |
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| CN 201110066676 CN102164076B (en) | 2011-03-18 | 2011-03-18 | Network interface redundancy realization method, redundant network interface device and switch equipment |
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| CN102164076B CN102164076B (en) | 2013-09-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113541328A (en) * | 2021-07-08 | 2021-10-22 | 北京零壹空间电子有限公司 | Power supply and communication device and system of electric equipment on arrow |
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| US7593320B1 (en) * | 2004-04-30 | 2009-09-22 | Marvell International, Ltd. | Failover scheme for stackable network switches |
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| CN1283025A (en) * | 1999-09-13 | 2001-02-07 | 深圳市中兴通讯股份有限公司 | Primary standby structure of Ethernet port |
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