CN114501172A - Telecommunication grade network switch - Google Patents
Telecommunication grade network switch Download PDFInfo
- Publication number
- CN114501172A CN114501172A CN202011252974.0A CN202011252974A CN114501172A CN 114501172 A CN114501172 A CN 114501172A CN 202011252974 A CN202011252974 A CN 202011252974A CN 114501172 A CN114501172 A CN 114501172A
- Authority
- CN
- China
- Prior art keywords
- network switch
- sub
- network
- speed interface
- speed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/02—Constructional details
- H04Q1/10—Exchange station construction
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0654—Management of faults, events, alarms or notifications using network fault recovery
- H04L41/0663—Performing the actions predefined by failover planning, e.g. switching to standby network elements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/02—Constructional details
- H04Q1/035—Cooling of active equipments, e.g. air ducts
Abstract
The telecommunication grade network switch is a 2U/1.5U high frame device and is composed of two sub-network switches. According to the networking requirements of customers, two sub-network exchanges can be set as two independent network exchanges which respectively execute the network exchange function; or the two sub-network switches are set as the telecommunication grade network switches which are mutually protected and switched, when one sub-network switch fails, the control processor monitors, detects and processes the hardware line, and the low-speed interface unit can be quickly switched to the other sub-network switch without interrupting the traffic transmission work. All the units and modules are connected through the high-speed backboard, and the units or modules can be maintained or updated without interrupting the operation of the switch.
Description
Technical Field
The disclosure relates to a telecommunication grade network switch, in particular to a network switch with a 2U/1.5U high-level machine frame having a hot-plug protection switching function. Each low speed interface unit in the 2U-height frame supports 16 optical interfaces; each low speed interface unit in the 1.5U-height subrack supports 8 optical interfaces.
Background
Most of the network switches currently used by Data Service providers (Data Service providers) are industrial-grade hardware line designs. Except that the power supply and fan part has hot plug protection switching function, the most important high speed interface/high speed network exchange processing/control processing unit and low speed interface unit do not have hot plug protection switching function. To meet the requirement of High transmission reliability, two sets of network switches are commonly connected with each other, and transmission protection switching is performed through a separate control device (i.e. High Availability), which does not meet the requirement of traditional telecommunication operators.
In a traditional telecommunication service company, all telecommunication equipment needs to be designed with the highest reliability (the equipment reaches 99.999% reliability, and the average service interruption time per year does not exceed 5 minutes and 15 seconds). In a data center of a data service provider, a plurality of network switches are connected to each other by high-speed optical cables. (the equipment reaches 99.9% reliability, and the average interruption service time per year should not exceed 8 hours and 46 minutes.) when one of the switches has a problem or a fault, the control center detects the existence of the faulty switch and sends a command to switch the data stream to the normal switch to continue providing the traffic service. Because the number of switches controlled by the control center is huge and distributed in various places, it may not be possible to detect the location of the faulty device in time and make correct processing immediately to cause inconsistent time of protection switching, so that some special communication requirements cannot be met, such as the requirement of 1 millisecond (1ms) protection switching in ultra-reliable low latency communication (URLLC) in a 5G system.
Disclosure of Invention
In one embodiment of the present disclosure, a telecommunications class network switch is comprised of two sub-network switches. According to the networking requirements of customers, the two sub-network switches can be set as two independent network switches; or setting the two sub-network switches as telecommunication grade network switches for protection switching with each other. When one of the circuits is in failure, the control processor monitors, detects and processes the hardware circuit to quickly execute the switching operation. For example, when the high-speed interface/high-speed network switching processing/control processing unit in the first sub-network switch fails, the relatively low-speed interface unit is switched to the second sub-network switch to continue to perform the transceiving traffic; and vice versa.
In another embodiment of the present disclosure, two sub-network switches are set as telecommunication class network switches that perform protection switching with each other. When one interface of one low-speed interface unit in the first sub-network exchanger is failed, the interface is switched to the opposite interface of the high-speed interface/high-speed network exchange processing/control processing unit in the second sub-network exchanger to continue to execute the receiving and sending of the communication. If several interfaces in the low-speed interface unit in the first sub-network switch fail, they are also switched to the opposite interface in the high-speed interface/high-speed network switch process/control process unit in the second sub-network switch.
The invention is a telecommunication grade network switch, comprising: a machine frame, wherein the height of the machine frame is 2U or 1.5U; and a first sub-network switch and a second sub-network switch arranged in the machine frame, wherein the first sub-network switch and the second sub-network switch have the same function, thereby the first sub-network switch and the second sub-network switch can be set as two independent switches or a telecommunication grade switch with protection switching.
Preferably, the integrated server (server) and the Switch (Switch) function as a whole, and are suitable for Multi-Access Edge Computing (MEC).
Preferably, the machine frame further includes a fan module and a plurality of units, including an alternating current-direct current (AC-DC) power conversion unit, a direct current-direct current (DC-DC) power conversion unit, a first sub-network switch low-speed interface unit, a second sub-network switch low-speed interface unit, a first sub-network switch high-speed interface/high-speed network switch processing/control processing unit, a second sub-network switch high-speed interface/high-speed network switch processing/control processing unit, and a network management and satellite navigation clock signal interface unit, wherein the units and the fan module are configured and various interfaces, switches, and status displays (LEDs) on a Front panel (All Front-Access) of the machine frame.
Preferably, each of the units and the fan heat dissipation module is composed of a Printed Circuit Board (PCB), and the units and the fan heat dissipation module are connected through a high-speed signal transfer circuit backplane.
Preferably, the unit and the fan heat dissipation module have hot plug function.
Preferably, a hardware protection switching function is provided, wherein when the first sub-network switch high speed interface/high speed network switch processing/control processing unit is damaged, the first sub-network switch low speed interface unit automatically switches to the high speed network switch chip in the second sub-network switch, and the traffic transmitted by the lower layer network device is transmitted to the high speed network switch chip in the second sub-network switch through the first sub-network switch low speed interface unit.
Preferably, the protection switching time of the one-to-one hardware protection switching function is less than 1 millisecond (1 ms).
Preferably, a hardware protection switching function is provided, wherein when the first sub-network switch high speed interface/high speed network switch processing/control processing unit is damaged, the first sub-network switch low speed interface unit automatically switches to the high speed network switch chip in the second sub-network switch, and the traffic transmitted by the lower layer network device is simultaneously transmitted to the high speed network switch chip in the first sub-network switch and the high speed network switch chip in the second sub-network switch via the first sub-network switch low speed interface unit and the second sub-network switch low speed interface unit, respectively.
Preferably, the hardware protection switching time of the plus-one hardware protection switching function is less than 1 millisecond (1 ms).
Preferably, the downlink traffic is respectively transmitted from the first half interface of the high-speed network switch chip in the first sub-network switch to the next layer of network device through the first sub-network switch low-speed interface unit, and from the second half interface of the high-speed network switch chip in the second sub-network switch to the next layer of network device through the second sub-network switch low-speed interface unit.
Preferably, when one of the interfaces in the high-speed network switch chip of the high-speed interface/high-speed network switch processing/control processing unit in the first sub-network switch fails, the low-speed interface unit of the first sub-network switch switches from the active path to the standby path, and the input traffic is transmitted to the corresponding interface of the high-speed network switch chip of the high-speed interface/high-speed network switch processing/control processing unit in the second sub-network switch through the standby path.
Preferably, the high speed interface and the low speed interface are configured to provide Local Loop Test (Local Loop Test) functionality.
Preferably, the high speed interface and the low speed interface are configured to provide Remote Loop Test (Remote Loop Test) functionality.
Preferably, the device further comprises an analog signal output and input interface.
In summary, in the two sub-network switches in the telecommunication level network switch, each control processor is provided to monitor the working condition of the own party at any time. If the control processor detects the hardware fault information in the switch or the alarm information generated by the high-speed switching chip due to the software problem, the control processor immediately processes and informs the other control processor of the information, and the control processor and the switch start the transmission path selector to switch the low-speed interface unit to the normal sub-network switch after the two are jointly evaluated. This includes the switching of the high-speed interface/high-speed network switching processing/control processing unit and the switching of the low-speed interface unit.
Drawings
Fig. 1 is a schematic diagram of a telecommunication grade network switching system according to an embodiment of the present disclosure.
Figure 2 depicts a functional block diagram of a network switch according to an embodiment of the present disclosure.
Fig. 3 shows a detailed functional block diagram of a network switch according to an embodiment of the present disclosure.
Fig. 4 is a schematic diagram illustrating an operation of a network switch according to an embodiment of the disclosure.
Fig. 5 is a schematic diagram illustrating the operation of a network switch according to an embodiment of the present disclosure.
Fig. 6 is a schematic diagram illustrating the operation of a network switch according to an embodiment of the present disclosure.
FIG. 7 is a flow chart of a method of operation according to an embodiment of the present disclosure.
[ description of main element symbols ]
10: telecommunication grade network switch
20: AC-DC power supply conversion unit
30: DC-DC power supply conversion unit
40: management and satellite navigation clock signal interface unit
50: fan radiating module
100: telecommunication grade network switch
120 a: first sub-network switch low-speed interface unit
120 b: low speed interface unit of second sub-network switch
130 a: first sub-network switch high-speed interface/high-speed network switch processing/control processing unit
130 b: second sub-network switch high-speed interface/high-speed network switch processing/control processing unit
121: low speed interface transceiver
122: transmission path selector
131a, 131 b: high-speed network switching chip
132: control processor
133: high-speed interface transceiver
140 high-speed signal switching circuit backboard
200: method of operation
S210, S220, S230: step (ii) of
H1: height
L1: length of
W1: width of
Detailed Description
The terms "comprising," having, "" including, "and the like, as used herein, are intended to be open-ended terms that mean" including, but not limited to. Further, as used herein, "and/or" includes any and all combinations of one or more of the associated listed items.
In this document, when an element is referred to as being "connected" or "coupled," it can be referred to as being "electrically connected" or "electrically coupled. The term "connect" or "coupling" can also be used to indicate the mutual connection or interaction between two or more elements. Furthermore, although the terms first, second, …, etc. may be used herein to describe various elements, these elements and operations are used only to distinguish one element from another or from another element or operation described in the same technical field. Unless the context clearly dictates otherwise, the terms do not specifically refer or imply an order or sequence nor are they intended to limit the disclosure.
Referring to fig. 1, fig. 1 is a schematic diagram of a telecommunication grade network switch 10 according to an embodiment of the present disclosure. The telecom class network switch 10 is mounted on a rack having a height H1, a length L1, and a width W1, and the system rack includes an alternating current-direct current (AC-DC) power conversion unit 20, a direct current-direct current (DC-DC) power conversion unit 30, a first sub-network switch low-speed interface unit 120a, a second sub-network switch low-speed interface unit 120b, a first sub-network switch high-speed interface/high-speed network switch processing/control processing unit 130a, a second sub-network switch high-speed interface/high-speed network switch processing/control processing unit 130b, a network management and satellite navigation clock signal interface unit 40, a fan heat dissipation module 50, and a high-speed signal switching circuit backplane 140.
As depicted in fig. 1, the shelf design of the telecom grade network switch 10 is an all front-access (all-access) design, including hot plugging of power conversion units, hot plugging of low speed interface units, hot plugging of high speed interface/high speed network switch processing/control processing units, and hot plugging of fan modules. The above units and modules are directly inserted into the high-speed signal switching circuit backplane 140 to form a complete telecommunication grade network switch 100, and meanwhile, the maintenance and replacement of the units and modules are carried out through the hot plugging of the units without interrupting the service of the switch.
In one embodiment, the height H1, the length L1, and the width W1 are not higher than (including) 2U (1U ═ 1 rack unit ═ 1.75 inches), 10 inches long, and 19 inches wide, respectively, and the height, length, and width of the network switching system 10 are not limited to the above, and can be adjusted according to the actual situation. The power conversion unit may be an alternating current-direct current (AC-DC) conversion circuit unit or any combination of direct current-direct current (DC-DC) conversion circuit units.
Referring to fig. 2, fig. 2 is a functional block diagram of a telecommunication grade network switch 100 according to an embodiment of the present disclosure. The first sub-network switch 110a includes a low-speed interface unit 120a and a high-speed interface/high-speed network switch processing/control processing unit 130a, and the second sub-network switch 110b includes a low-speed interface circuit 120b and a high-speed interface/high-speed network switch processing/control processing unit 130 b. The units and modules are connected through a high-speed signal switching circuit backplane 140. The detailed operation will be described later.
Referring to fig. 3, fig. 3 is a detailed functional block diagram of a telecommunication grade network switch 100 according to an embodiment of the present disclosure. The low-speed interface unit 120a in the first sub-network switch and the low-speed interface unit 120b in the second sub-network switch each include a low-speed interface transceiver 121 and a transmission path selector 122. For convenience of illustration, fig. 3 only shows 6 sets of the low-speed interface transceivers 121 and the transmission path selectors 122, but the number of the low-speed interface transceivers 121 and the transmission path selectors 122 is not limited thereto and can be adjusted according to the actual situation.
The low-speed interface transceiver 121 is configured to receive and transmit traffic, and the transmission path selector 122 is configured to control the incoming traffic to be transmitted to the high-speed interface/high-speed network switch processing/control processing unit 130a in the first sub-network switch 110a or the high-speed interface/high-speed network switch processing/control processing unit 130b in the second sub-network switch 110b via the high-speed signal forwarding circuit backplane 140. For downlink traffic, the transmission path selector 122 selects whether the traffic transmission path is the active path (first path) or the standby path (second path) according to the system operating condition of the telecommunication grade network switch 100. For uplink traffic sent from the next layer of network devices, the transmission path selector 122 may be configured to enable the incoming traffic to be simultaneously transmitted (1+1 protection mode) or individually (1:1 protection mode) to the high speed interface/high speed network switch processing/control processing unit 130a in the first sub-network switch 110a and the high speed interface/high speed network switch processing/control processing unit 130b in the second sub-network switch 110b via the first path and the second path.
In one embodiment, the low-speed interface transceiver 121 may be a 10Gbps/25Gbps/40Gbps/100Gbps physical layer interface transceiver, and has the IEEE 1588v2 precision clock synchronization function and supports multi-layer network protocol operation mode.
The high-speed interface/high-speed network switch processing/control processing unit 130a in the first sub-network switch and the high-speed interface/high-speed network switch processing/control processing unit 130b in the second sub-network switch each include a high-speed network switch chip 131, a control processor 132, and a high-speed interface transceiver 133. The data packet transmitted by the upper layer network device is transmitted to the high speed network switch chip 131 through the high speed interface transceiver 133, and is disassembled and processed, and the data is repackaged according to the requirements of the IEEE specification, and is transmitted to the corresponding output port according to the network set address, and is transmitted to the transmission path selector 122 through the high speed signal switching circuit backplane 140, and finally is transmitted to the next layer network device through the low speed interface transceiver 121. Otherwise; the data packets transmitted from the next layer of network equipment are transmitted to the high-speed network switch chip 131 through the low-speed interface transceiver 121 and the transmission path selector 122, the high-speed signal switching circuit backplane 140, processed, transmitted to the previous layer of network equipment through the high-speed interface transceiver 133. The information generated by the line monitoring points in each sub-network switch is collected via the FPGA, processed and transmitted to the control processor 132. The two control processors 132 in the telecommunication-class network switch 100 are connected via a 10Gbps or PCIe interface, and notify each other of the information collected by the two control processors at any time to activate the transmission path of the transmission path selector 122.
In one embodiment, the high-speed Network switch chip 131 may be a 100Gbps/400Gbps Network switch, configured to perform packet processing, switching, and transmission between low-speed end (10Gbps/25Gbps/40Gbps/100Gbps) traffic and high-speed end (100Gbps/400Gbps) traffic, and has a Data Link Layer (Data Link Layer) switch function and a Network Layer (Network Layer) router function, and supports a virtual Network architecture (NFV) function.
In one embodiment, the high-speed interface/high-speed network switch processing/control processing unit 130a in the first sub-network switch and the high-speed network switch chip 131 of the high-speed interface/high-speed network switch processing/control processing unit 130b in the second sub-network switch each have two Stacking ports (e.g., 100Gbps Stacking ports) for Stacking and combining the two high-speed network switch chips 131, and when the high-speed interface of the high-speed network switch chip 131 of the high-speed network switch processing/control processing unit 130a in the first sub-network switch is congested, a part of the packets will be sent to the high-speed interface/high-speed network switch of the second sub-network switch via the Stacking ports of the high-speed network switch chip 131 of the high-speed interface/high-speed network switch processing/control processing unit 130a in the first sub-network switch The stack port of the high-speed network switch chip 131 of the processing/control unit 130b is transmitted to the network device on the upper layer through the high-speed interface transceiver 133 via the high-speed interface of the high-speed network switch chip 131 of the second sub-network switch/the high-speed network switch processing/control unit 130 b.
In one embodiment, the control processor 132 may be a central processing unit, a microprocessor or other processor with system management, monitoring, setting and maintenance functions, and has the operation function of an IEEE 1588v 21-step PTP (precision time protocol) precision synchronous clock algorithm, such as Intel X86 series or ARM based processor. The control processor 132 is used for identification and execution of protection switching conditions for telecommunications and the like and for the network switch 100.
In one embodiment, high speed interface transceiver 133 may be a 100Gbps physical layer interface transceiver, which may be configured to form 100Gbps traffic with 4 groups of 25Gbps data streams, or 400Gbps traffic with 8 groups of 50Gbps data streams, and has IEEE 1588v2 precision clock synchronization function and support multi-layer network protocol operation mode.
Referring to fig. 4, fig. 4 is a schematic diagram illustrating the operation of the telecommunication grade network switch 100 according to an embodiment of the present disclosure. Under normal operation, the telecommunication grade network switch 100 receives the traffic transmitted by the next layer network device via the low speed interface transceiver 121 of the low speed interface unit 120a or the low speed interface unit 120 b. The transmission path selector 122 switches to the active path, so that the input traffic in the low-speed interface unit 120a in the first sub-network switch is transmitted to the high-speed signal forwarding circuit backplane 140 via the active path and then to the high-speed interface/high-speed network switch processing/control processing unit 130a, and the input traffic in the low-speed interface unit 120b in the second sub-network switch is transmitted to the high-speed signal forwarding circuit backplane 140 via the active path and then to the high-speed interface/high-speed network switch processing/control processing unit 130 b.
The network switch chip 131 in the high-speed interface/high-speed network switch processing/control processing unit 130a in the first sub-network switch receives the input traffic, and transmits the processed traffic to the high-speed interface transceiver 133, and transmits the processed traffic to the network device on the previous layer through the high-speed interface transceiver 133. Similarly, the network switch chip 131 in the high-speed interface/high-speed network switch processing/control processing unit 130b in the second sub-network switch receives the input traffic, and transmits the processed traffic to the high-speed interface transceiver 133, and transmits the processed traffic to the network device in the previous layer through the high-speed interface transceiver 133. In fig. 4, the active path (first path) indicates a path for transmitting an incoming traffic by a solid line, and the backup path (second path) indicates a path for transmitting a non-incoming traffic by a broken line.
Referring to fig. 5, fig. 5 is a schematic diagram illustrating the operation of the telecommunication grade network switch 100 according to an embodiment of the present disclosure. When an interface of the telecommunication network switch 100 fails, for example, the 2 nd interface of the high-speed network switch chip 131 in the high-speed network switch processing/control processing unit 130a in the first sub-network switch fails, the second channel of the low-speed interface unit 120a is switched from the active path to the standby path via the second transmission path selector 122, and then the incoming traffic is transmitted to the 2 nd interface of the high-speed network switch chip 131 in the high-speed network switch processing/control processing unit 130b in the second sub-network switch via the standby path, thereby completing the subsequent operations. The number of failed interfaces is not limited to one, and when a plurality of interfaces fail, the corresponding transmission path selector 122 of the failed interface can be quickly switched to the standby path to complete the subsequent operation.
Conversely, when the 2 nd interface of the high speed network switch chip 131 in the high speed interface/high speed network switch processing/control processing unit 130b in the second sub-network switch fails, the second channel of the low speed interface unit 120b is switched from the active path to the standby path via the second transmission path selector 122, and then the incoming traffic is transmitted to the 2 nd interface of the high speed network switch chip 131 in the high speed interface/high speed network switch processing/control processing unit 130a in the first sub-network switch via the standby path, thereby completing the subsequent operations. The number of failed interfaces is not limited to one, and when a plurality of interfaces fail, the corresponding switch transmission path selector 122 of the failed interface can be quickly switched to the standby path to complete the subsequent operation.
Referring to fig. 6, fig. 6 is a schematic diagram illustrating an operation of the high-speed network switch chip 131 according to an embodiment of the disclosure. When the high-speed network switch chip 131 in the network switch 100 fails, for example, the high-speed network switch chip 131 in the high-speed interface/high-speed network switch processing/control processing unit 130a in the first sub-network switch fails, all the transmission path selectors 122 in the low-speed interface unit 120a in the first sub-network switch to the standby path (second path), so that the input traffic entering the low-speed interface unit 120a is transmitted to the interface of the high-speed interface/high-speed network switch processing/control processing unit 130b in the second sub-network switch via the standby path, and then the network switch 131 in the high-speed interface/high-speed network switch processing/control processing unit 130b completes the subsequent operations.
Conversely, when the high-speed network switch chip 131 in the high-speed interface/high-speed network switch processing/control processing unit 130b in the second sub-network switch fails, all the transmission path selectors 122 in the low-speed interface unit 120b in the second sub-network switch to the standby path (second path), so that the incoming traffic entering the low-speed interface unit 120b is transmitted to the interface of the high-speed interface/high-speed network switch processing/control processing unit 130a in the first sub-network switch via the standby path, and then the network switch 131 in the high-speed interface/high-speed network switch processing/control processing unit 130a completes the subsequent operations.
In one embodiment, the control processor 132 (configured as Master control processor, Master) in the high speed interface/high speed network switch processing/control processing unit 130a of the first sub-network switch and the control processor 132 (configured as Slave control processor, Slave) in the high speed interface/high speed network switch processing/control processing unit 130b of the second sub-network switch are connected by a 10Gbps network channel, the two control processors 132 will backup all the parameters of their respective operations, and when the first sub-network switch 110a fails, the control processors 132 will initiate protection switching. The second sub-network switch 110b takes over the traffic of the first sub-network switch 110a while its control processor 132 continues to supervise the system operation, changing from Slave to Master. And vice versa.
In one embodiment, the telecom grade network switch 100 can provide a one-to-one usage mode for a user. When the network device is in the one-to-one mode, the traffic transmitted from the upper layer network device is transmitted to the first sub-network switch 110a and the second sub-network switch 110b, respectively, and is controlled and processed by the control processor 132 in 2 network switches, if the high speed interface/high speed network switch processing/ control processing units 130a and 130b in the two sub-network switches are in a normal state, downstream traffic is transmitted from the first half (e.g., 1 st to 8 th or 1 st to 16 th) interface of the high-speed network switch chip 131a in the first sub-network switch 110a to the next layer of network device via the low-speed interface unit 120a, and the second half (e.g., 9 th to 16 th or 17 th to 32 th) interface of the high-speed network switch chip 131b in the second sub-network switch is transmitted to the next layer of network device via the low-speed interface unit 120 b. If the high-speed interface/high-speed network switch processing/control processing unit 130a in the first sub-network system is damaged, the low-speed interface unit 120a is switched to the first half (for example, 1 st to 8 th or 1 st to 16 th) interface of the high-speed network switch chip 131b in the second sub-network switch, and continues to perform the transceiving traffic. The traffic transmitted by the lower network device is transmitted to the first half (e.g., 1 st to 8 th or 1 st to 16 th) interface and the rear half (e.g., 9 th to 16 th or 17 th to 32 th) interface of the high-speed network switch chip 131b in the second sub-network switch 110b through the low- speed interface units 120a and 120b, respectively. And vice versa.
In one embodiment, the telecom grade network switch 100 may provide a user with an additional usage mode. When the mode is set to the one-plus-one mode, the traffic transmitted by the network device in the previous layer is simultaneously transmitted to the first sub-network switch 110a and the second sub-network switch 110b, and is controlled and processed by the control processor 132 in the 2 network switches, if the high speed interface/high speed network switch processing/ control processing units 130a and 130b in the two sub-network switches are in a normal state, the downlink traffic is transmitted from the first half (e.g., 1 st to 8 th or 1 st to 16 th) interface of the high-speed network switch chip 131a in the first sub-network switch to the next layer of network device via the low-speed interface unit 120a, and the second half (e.g., 9 th to 16 th or 17 th to 32 th) interface of the high-speed network switch chip 131b in the second sub-network switch is transmitted to the next layer of network device via the low-speed interface unit 120 b. If the high-speed interface/high-speed network switch processing/control processing unit 130a in the first sub-network system is damaged, the low-speed interface unit 120a is switched to the first half (e.g., 1 st to 8 th or 1 st to 16 th) interface of the high-speed network switch chip 131b in the second sub-network switch to continue to receive and transmit traffic. Regardless of the status of the first sub-network switch 110a or the second sub-network switch 110b, the traffic transmitted by the next lower network device is transmitted to the high-speed network switch chips 131a and 131b in the two sub-network switches 110a and 110b via the low- speed interface units 120a and 120b, respectively, to continue to perform subsequent operations.
In one embodiment, the low-speed interface transceiver 121 and the high-speed interface transceiver 133 have a signal generator and a checker for system self Test (in-system diagnostic Test), which can perform the functions of near-end loopback (near-end loopback) Test, far-end loopback (far-end loopback) Test, and high-speed signal open eye (eye diagnostic monitoring).
In one embodiment, the transmission path selector 122 has the functions of clock recovery (clock recovery) signal regeneration (re-timing), differential signal (differential signal pair) polarity inversion setting, a pseudo-random binary sequence (PRBS) generator, and high-speed signal open eye pattern monitoring (eye digital monitoring), and is suitable for system testing and parameter adjustment.
In an embodiment, the telecommunication grade network switching system 10 is equipped with a Multi-GNSS receiver module, which can receive signals of the global positioning system GPS of the united states, the GLONASS system (GLONASS) of russia, the BeiDou satellite navigation system (BeiDou) of china and the Galileo positioning system (Galileo) of the european union, and demodulate 1pps (pulse Per second) and 10MHz accurate signals as reference signal sources of the IEEE 1588v 21-Step PTP accurate clock synchronization network.
Referring to FIG. 7, FIG. 7 is a flow chart illustrating a method 200 of operation according to an embodiment of the present disclosure. For the operation method 200 shown in fig. 7 to be easily understood, please refer to fig. 3 at the same time. The operation method 200 includes steps S210, S220, and S230. Step S210 is to transmit the incoming traffic to the first sub-network switch 110a via the active path or to the second sub-network switch 110b via the active path. In step S220, when the first sub-network switch 110a fails, the second sub-network switch 110b is controlled to receive the incoming traffic. In step S230, when the second sub-network switch device 110b fails, the first sub-network switch device 110a is controlled to receive the input traffic.
In summary, the network switch implements a high-speed network switch platform with high reliability of telecommunication level and backup fast protection switching function by using a dual-architecture. Meanwhile, a high-speed transmission switching network synchronous with a satellite navigation precision clock is constructed, and the network has the functions of an IEEE 1588v 21-step PTP packet synchronization protocol and a Sync E synchronous network architecture.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (14)
1. A telecommunications grade network switch, comprising:
a machine frame, wherein the height of the machine frame is 2U or 1.5U; and
a first sub-network switch and a second sub-network switch, which are arranged in the subrack, wherein the first sub-network switch and the second sub-network switch have the same function, thereby the first sub-network switch and the second sub-network switch can be set as two independent switches or a telecommunication grade switch with protection switching.
2. A telecommunications grade network switch according to claim 1 wherein the integrated server and switch functions are integrated and adapted for multiple access edge computing switching.
3. The telecommunication grade network switch according to claim 2, wherein the chassis further comprises a fan module and a plurality of units, including an ac-dc power conversion unit, a dc-dc power conversion unit, a first sub-network switch low-speed interface unit, a second sub-network switch low-speed interface unit, a first sub-network switch high-speed interface/high-speed network switch process/control unit, a second sub-network switch high-speed interface/high-speed network switch process/control unit, and a network management and satellite navigation clock signal interface unit, wherein the units and the fan module configuration and various interfaces, switches and states are displayed on the front panel of the chassis.
4. The telecommunications grade network switch of claim 3, wherein each of the units and the fanning module are comprised of printed circuit boards, the units and the fanning module being connected by a backplane of the high speed signal relay circuit.
5. The telecommunications grade network switch of claim 4, wherein the units and the fanning modules have hot-swap functionality.
6. A telecommunications grade network switch according to claim 3, wherein a one-to-one hardware protection switching function is provided, wherein when the first sub-network switch high speed interface/high speed network switch processing/control processing unit is damaged, the first sub-network switch low speed interface unit automatically switches to the high speed network switch chip in the second sub-network switch, and traffic transmitted by lower level network devices is transmitted to the high speed network switch chip in the second sub-network switch via the first sub-network switch low speed interface unit.
7. The telecommunications grade network switch of claim 6, wherein the protection switching time of the one-to-one hardware protection switching function is less than 1 millisecond.
8. The telecommunications grade network switch of claim 3, wherein an add-on hardware protection switching function is provided, wherein when the first sub-network switch high speed interface/high speed network switch processing/control processing unit is damaged, the first sub-network switch low speed interface unit automatically switches to the high speed network switch chip in the second sub-network switch, and traffic transmitted by lower network devices is simultaneously transmitted to the high speed network switch chip in the first sub-network switch and the high speed network switch chip in the second sub-network switch via the first sub-network switch low speed interface unit and the second sub-network switch low speed interface unit, respectively.
9. The telecommunications grade network switch of claim 8, wherein the hardware protection switching time of the plus one hardware protection switching function is less than 1 millisecond.
10. A telecommunications grade network switch according to claim 3, wherein downstream traffic is respectively routed from the first half of the high speed network switch chip interface in the first sub-network switch to the next level network device via the first sub-network switch low speed interface unit and from the second half of the high speed network switch chip interface in the second sub-network switch to the next level network device via the second sub-network switch low speed interface unit.
11. The telecommunications grade network switch of claim 3, wherein when one of the interfaces in the high speed network switch chip of the high speed interface/high speed network switch processing/control processing unit in the first sub-network switch fails, the first sub-network switch low speed interface unit switches from the active path to the standby path, and the incoming traffic is routed via the standby path to the corresponding interface of the high speed network switch chip in the high speed interface/high speed network switch processing/control processing unit in the second sub-network switch.
12. The telecommunications grade network switch of claim 2, wherein the high speed interface and the low speed interface are configured to provide local loop test functionality.
13. The telecommunications grade network switch of claim 2, wherein the high speed interface and the low speed interface are configured to provide remote loop test functionality.
14. The telecommunications grade network switch of claim 1 further comprising analog signal output and input interfaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011252974.0A CN114501172A (en) | 2020-11-11 | 2020-11-11 | Telecommunication grade network switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011252974.0A CN114501172A (en) | 2020-11-11 | 2020-11-11 | Telecommunication grade network switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114501172A true CN114501172A (en) | 2022-05-13 |
Family
ID=81491100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011252974.0A Pending CN114501172A (en) | 2020-11-11 | 2020-11-11 | Telecommunication grade network switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114501172A (en) |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003283519A (en) * | 2002-03-25 | 2003-10-03 | Fujitsu Ltd | Network control system and fault relief method |
| CN1514601A (en) * | 1999-02-23 | 2004-07-21 | �йȲ��� | Multibusiness network exchanger |
| US20050058063A1 (en) * | 2003-09-15 | 2005-03-17 | Dell Products L.P. | Method and system supporting real-time fail-over of network switches |
| KR20050071814A (en) * | 2004-01-02 | 2005-07-08 | 삼성전자주식회사 | Network switch system of gigabit ethernet for building stacking using crosspoint switch and switching setting method using the same |
| CN1658592A (en) * | 2004-02-16 | 2005-08-24 | 威盛电子股份有限公司 | Method for concatenating network exchange chip and correlation device |
| CN101984610A (en) * | 2010-12-01 | 2011-03-09 | 卓越信通电子（北京）有限公司 | Fault-tolerant network switch |
| KR20140031775A (en) * | 2012-09-05 | 2014-03-13 | 삼성에스디에스 주식회사 | Network backup apparatus and network system with the same |
| CN104299350A (en) * | 2014-09-02 | 2015-01-21 | 杭州航海仪器有限公司 | Multiple-redundancy variable master-slave fire alarm monitoring system and method |
| CN105103475A (en) * | 2014-03-05 | 2015-11-25 | 华为技术有限公司 | Method, device and system for link switching |
| CN206313794U (en) * | 2016-12-30 | 2017-07-07 | 中国电子科技集团公司第三十四研究所 | A kind of redundant communication system based on SDH |
| CN108021525A (en) * | 2016-10-28 | 2018-05-11 | 北京计算机技术及应用研究所 | A kind of redundancy exchange system based on the more primary interconnects of PCIE buses |
| CN109617730A (en) * | 2018-12-19 | 2019-04-12 | 中国银联股份有限公司 | A kind of method for switching network and device |
| CN110391941A (en) * | 2019-07-29 | 2019-10-29 | 深圳震有科技股份有限公司 | A kind of method, circuit board and the storage medium of circuit board sending and receiving data |
| CN111654359A (en) * | 2020-06-23 | 2020-09-11 | 中国民用航空总局第二研究所 | Hot standby redundant communication system and method |
-
2020
- 2020-11-11 CN CN202011252974.0A patent/CN114501172A/en active Pending
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1514601A (en) * | 1999-02-23 | 2004-07-21 | �йȲ��� | Multibusiness network exchanger |
| JP2003283519A (en) * | 2002-03-25 | 2003-10-03 | Fujitsu Ltd | Network control system and fault relief method |
| US20050058063A1 (en) * | 2003-09-15 | 2005-03-17 | Dell Products L.P. | Method and system supporting real-time fail-over of network switches |
| KR20050071814A (en) * | 2004-01-02 | 2005-07-08 | 삼성전자주식회사 | Network switch system of gigabit ethernet for building stacking using crosspoint switch and switching setting method using the same |
| CN1658592A (en) * | 2004-02-16 | 2005-08-24 | 威盛电子股份有限公司 | Method for concatenating network exchange chip and correlation device |
| CN101984610A (en) * | 2010-12-01 | 2011-03-09 | 卓越信通电子（北京）有限公司 | Fault-tolerant network switch |
| KR20140031775A (en) * | 2012-09-05 | 2014-03-13 | 삼성에스디에스 주식회사 | Network backup apparatus and network system with the same |
| CN105103475A (en) * | 2014-03-05 | 2015-11-25 | 华为技术有限公司 | Method, device and system for link switching |
| CN104299350A (en) * | 2014-09-02 | 2015-01-21 | 杭州航海仪器有限公司 | Multiple-redundancy variable master-slave fire alarm monitoring system and method |
| CN108021525A (en) * | 2016-10-28 | 2018-05-11 | 北京计算机技术及应用研究所 | A kind of redundancy exchange system based on the more primary interconnects of PCIE buses |
| CN206313794U (en) * | 2016-12-30 | 2017-07-07 | 中国电子科技集团公司第三十四研究所 | A kind of redundant communication system based on SDH |
| CN109617730A (en) * | 2018-12-19 | 2019-04-12 | 中国银联股份有限公司 | A kind of method for switching network and device |
| CN110391941A (en) * | 2019-07-29 | 2019-10-29 | 深圳震有科技股份有限公司 | A kind of method, circuit board and the storage medium of circuit board sending and receiving data |
| CN111654359A (en) * | 2020-06-23 | 2020-09-11 | 中国民用航空总局第二研究所 | Hot standby redundant communication system and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2633527C1 (en) | Communication line switching method, device and system | |
| US20030137934A1 (en) | System and method for providing management of fabric links for a network element | |
| KR100603599B1 (en) | Apparatus and Method for Redundancy Control of Redundancy Switch Board | |
| US20030200330A1 (en) | System and method for load-sharing computer network switch | |
| US20070019642A1 (en) | Virtual local area network configuration for multi-chassis network element | |
| US6631483B1 (en) | Clock synchronization and fault protection for a telecommunications device | |
| KR20010031753A (en) | Telecommunications multiplexer | |
| KR20030023861A (en) | Radio-frequency communications redundancy | |
| CN105721546A (en) | Multi-data integration service platform based on industrial Internet of Things (IoT) communication | |
| CN102326358B (en) | Method, device of cluster system extension and cluster system | |
| JP3692079B2 (en) | Digital signal transmission device | |
| EP2197218B1 (en) | A shared bus distributed intercross device | |
| US6957369B2 (en) | Hidden failure detection | |
| US7032135B2 (en) | Equipment protection using a partial star architecture | |
| US20030133405A1 (en) | Method and apparatus for healing of failures for chained boards with SDH interfaces | |
| CN112187677B (en) | Network switch and operation method thereof | |
| CN114501172A (en) | Telecommunication grade network switch | |
| CN106533771A (en) | Network device and control information transmission method | |
| TWI758946B (en) | Teleco-grade network switch | |
| US9585032B2 (en) | Method and arrangement for providing data plane redundancy | |
| CN1988530A (en) | Remote control and control redundancy for distributed communication equipment | |
| CN114095462B (en) | Fault-tolerant method and system for SRIO communication system of radar processor | |
| TWI717778B (en) | Network switch and operating method thereof | |
| Cisco | BNI (Trunk) Cards | |
| Cisco | BNI (Trunk) Cards |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |