CN104363188A - Hardware redundancy Ethernet switch system - Google Patents
Hardware redundancy Ethernet switch system Download PDFInfo
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- CN104363188A CN104363188A CN201410621894.6A CN201410621894A CN104363188A CN 104363188 A CN104363188 A CN 104363188A CN 201410621894 A CN201410621894 A CN 201410621894A CN 104363188 A CN104363188 A CN 104363188A
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Abstract
The invention discloses a hardware redundancy Ethernet switch system comprising a plurality of switches. The switches are connected serially through a plurality of links and are provided with port aggregation chips respectively, and the port aggregation chips are used for implementing switch port aggregation; each switch, except for the first and last ones, is provided with a relay conducting device used for conducting input and output ports, arranged in pairs, of the switches when the switch where the device located is in failure and cannot operate normally; when the switch is recovered to operate, a relay unit disconnect the corresponded port, and the normal operation state of the corresponded port is recovered. Thus, link redundancy and equipment redundancy are implemented, the network bandwidth can be increased, and efficiency and safe operation of the switch system are guaranteed.
Description
Technical field
The present invention relates to Ethernet switch field, particularly relate to a kind of Ethernet switch system of hardware redundancy.
Background technology
At present, in Ethernet switch system, ring network structure is generally adopted to realize link redundancy and the equipment redundancy of switch system, if application number is the ring network structure disclosed in the Chinese patent application of 201010162067.7.As shown in Figure 1, it selects principal and subordinate's switch mainly through algorithm and determines normal link and backup link this ring network structure, is judged the communications status of port, and realize redundancy by change port status by interruption, poll monitoring.Because the switch in ring network structure is only communicated by a netting twine, the highlyest can only provide the 1000M network bandwidth, redundancy cannot be realized if there is multilink fault, and real arithmetic during its CPU high speed, self give out a contract for a project and occupy a large amount of Internet resources, once its CPU hangs up, the whole network will be caused to paralyse.
Summary of the invention
For the defect existed in above-mentioned prior art, the object of this invention is to provide a kind of Ethernet switch system of hardware redundancy, this system not only can realize link redundancy and equipment redundancy, and can improve the network bandwidth, ensure that switch system reliability of operation.
For achieving the above object, the Ethernet switch system of a kind of hardware redundancy of the present invention, this system comprises some switches, and realizes link redundancy by some link cascades some switches; Switch in switch system is provided with Single port polymeric chip, for realizing the port trunking of switch; And the every platform switch except first and last end switch is all configured with a relay conducting device, when switch cannot normally work, the relay conducting device of this switch configuration is utilized to keep the connection of the link through this switch.
Further, described port trunking chip receives the instruction of its place switch CPU, for the port trunking of its switch corresponding port, place enable after switch has started.
Further, between the input/output port of described relay conducting device serial connection configuration in pairs on switches, the input/output port of described paired configuration is a pair port that switch becomes a transmission link when normally working.
Further, described relay conducting device comprises control unit and relay unit; Wherein,
Described control unit for receiving the control signal of its place switch CPU, and controls the work of described relay unit according to described control signal;
Between the input/output port of the contact serial connection of described relay unit in pairs configuration on switches, and the interface pin one_to_one corresponding in the contact of relay unit and switch input/output port.
Further, described relay unit comprises the relay that several only have a contact.
Further, described control unit is the switching circuit that triode drives relay, described switching circuit comprises a triode and a relay, the base stage of described triode connects the control signal output of switch CPU, collector electrode connects described control unit repeat circuit coil one end, emitter grounding; The two ends of the relay contact in described control unit connect the feeder ear of power supply and described relay unit repeat circuit coil respectively.
Further, described triode drives the switching circuit of relay also to comprise a protective circuit of diode, and described protective circuit of diode is connected with the relay coil inverse parallel in described control unit.
Further, the switch at described relay conducting device and this device place is same power supply.
Further, the relay in described relay unit is normally closed relay.
The Ethernet switch system of hardware redundancy of the present invention, by polymeric chip in switch system, achieves link redundancy, and can realize the fault redundance of multilink, add the network bandwidth, for user saves a large amount of expenses of selection 10,000,000,000 switch; In addition, in this switch system, every platform switch except first and last end switch is all configured with a relay conducting device and achieves equipment redundancy, when equipment failure, the direct conducting in corresponding port makes network hop cross the switch of inefficacy, solves the problem that the fault because of part switch causes whole system to run.
Accompanying drawing explanation
Fig. 1 is the switch system structural representation of ring network structure in prior art;
Fig. 2 is that the present invention realizes the switch system schematic diagram of link redundancy and equipment redundancy by hardware mode;
Fig. 3 is the internal structure schematic diagram of switch in the Ethernet switch system of hardware redundancy of the present invention;
Fig. 4 is the structural representation of exchange board relay electrical equipment conducting device in the Ethernet switch system of hardware redundancy of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described.
As shown in Figures 2 and 3, the Ethernet switch system of hardware redundancy of the present invention comprises some switches, and these some switches are connected in series connection successively by some links; Switch in switch system is provided with Single port polymeric chip, for realizing the port trunking of switch; Every platform switch in switch system except first and last end switch is all configured with a relay conducting device, the input/output port of in pairs configuration on direct conducting switch when this device cannot normally work for breaking down when the switch at this device place, the input/output port of configuration is in pairs a pair port that switch becomes a transmission link when normally working; When equipment is resumed work, relay conducting device disconnects the connection of corresponding port, recovers the normal operating conditions of corresponding port.
Wherein, port trunking chip receives the instruction of its place switch CPU, for the port trunking of its switch corresponding port, place enable after switch has started; Therefore the switch system CPU in the present invention is without the need to high-speed computation, only need the port trunking when software startup initialization by port trunking chip enable transmit port, CPU self can not produce a large amount of self giving out a contract for a project and take Internet resources, even if CPU hangs up in system operation, system also can not be paralysed, and ensure that the reliability and safety of system.
Relay conducting device comprises control unit and relay unit; Relay unit is serially connected between the input/output port that its place switch configures in pairs, and relay unit all comprises the contact identical with the interface pin number quantity in its place transmit port, the two ends of each contact connect a pair transmission line becoming a transmission line in the input/output port configured in pairs when switch normally works respectively; Control unit for receiving the control signal of its place relay CPU, and controls the open and close of described relay unit according to control signal; Preferably relay unit only has the relay of pair of contact to form by several.
Wherein, control unit is the switching circuit that triode drives relay, and switching circuit comprises a triode and a relay, and the base stage of described triode connects the control signal output of switch CPU, collector electrode connects described control unit repeat circuit coil one end, emitter grounding; The two ends of the relay contact in control unit connect the feeder ear of power supply and relay unit repeat circuit coil respectively; In addition, in order to prevent the relay shutdown transient in control unit from causing damage to the device in control module, two ends inverse parallel fly-wheel diode of relay coil in a control unit, forms fly-wheel diode protective circuit.
Preferably, the switch at relay conducting device and this device place is same power supply, and the relay in relay unit is normally closed relay.
In addition, can select the number of transmission link as required, to reach the instructions for use in the prerequisite lower network bandwidth not using 10,000,000,000 switches, be user's cost saving.
As Fig. 4, the switch at relay conducting device and this device place is same power supply; The relay that relay in relay module uses is " normally closed " relay, so when the power-off of switch complete machine or relay are not powered, port is in conducting bypass state; Due to the output level of CPU also unmodified IO_CONTROL in switch electrifying startup process, IO_CONTROL keeps acquiescence low level, triode now in control unit turns off, relay in control unit keeps " often opening " state not power to the relay in relay unit, so when corresponding port in switch start-up course is still in the bypass state of conducting.
Switch has started the port trunking of rear enable corresponding port, while enabled switch forwards exchange, the output level of amendment IO_CONTROL is high level, triode ON now in control unit, relay in control unit is closure state, and start to power to the relay in relay unit, so switch has started rear corresponding port be in isolation, namely pass through exchange chip transceiving data as common.
When there is the situation of power-off in switch, the output level of IO_CONTROL becomes low level, triode now in control unit turns off, relay in control unit becomes " often opening ", and state is no longer powered to the relay in relay unit, relay recovery " normally closed " state in relay unit, direct conducting corresponding port, avoids the phenomenon of interrupting whole switch system because of the power-off of part switch and occurs, thus achieve the equipment redundancy of port trunking formula switch system.
In switch software restarting process, while forbidding switch forwards and exchanges, the output level of amendment IO_CONTROL is low level, triode now in control unit turns off, relay in control unit keeps " often opening " state, do not power to the relay unit on port, so, when port corresponding in switch software restarting process is in conducting state, until software restarting completes.
It is more than the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (9)
1. an Ethernet switch system for hardware redundancy, this system comprises some switches, and realizes link redundancy by these some switches of some link cascades; It is characterized in that,
Switch in described switch system is provided with Single port polymeric chip, for realizing the port trunking of switch;
Every platform switch except first and last end switch is all configured with a relay conducting device, when switch cannot normally work, utilizes the relay conducting device of this switch configuration to keep the connection of the link through this switch.
2. switch system according to claim 1, is characterized in that, described port trunking chip receives the instruction of its place switch CPU, for the port trunking of its switch corresponding port, place enable after switch has started.
3. switch system according to claim 1, it is characterized in that, between the input/output port of described relay conducting device serial connection configuration in pairs on switches, the input/output port of described paired configuration is a pair port that switch becomes a transmission link when normally working.
4. switch system according to claim 1, is characterized in that, described relay conducting device comprises control unit and relay unit; Wherein,
Described control unit for receiving the control signal of its place switch CPU, and controls the work of described relay unit according to described control signal;
Between the input/output port of the contact serial connection of described relay unit in pairs configuration on switches, and the interface pin one_to_one corresponding in the contact of relay unit and switch input/output port.
5. switch system according to claim 4, is characterized in that, described relay unit comprises the relay that several only have a contact.
6. switch system according to claim 4, it is characterized in that, described control unit is the switching circuit that triode drives relay, described switching circuit comprises a triode and a relay, the base stage of described triode connects the control signal output of switch CPU, collector electrode connects described control unit repeat circuit coil one end, emitter grounding; The two ends of the relay contact in described control unit connect the feeder ear of power supply and described relay unit repeat circuit coil respectively.
7. switch system according to claim 6, is characterized in that, described triode drives the switching circuit of relay also to comprise a protective circuit of diode, and described protective circuit of diode is connected with the relay coil inverse parallel in described control unit.
8. switch system according to claim 4, is characterized in that, the switch at described relay conducting device and this device place is same power supply.
9. switch system according to claim 8, is characterized in that, the relay in described relay unit is normally closed relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410621894.6A CN104363188B (en) | 2014-11-07 | 2014-11-07 | A kind of Ethernet switch system of hardware redundancy |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410621894.6A CN104363188B (en) | 2014-11-07 | 2014-11-07 | A kind of Ethernet switch system of hardware redundancy |
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| CN104363188A true CN104363188A (en) | 2015-02-18 |
| CN104363188B CN104363188B (en) | 2018-06-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105071905A (en) * | 2015-08-31 | 2015-11-18 | 安徽欧迈特数字技术有限责任公司 | Ethernet switch system |
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| CN104363188B (en) | 2018-06-19 |
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