CN205912200U - Rack -type OLT equipment - Google Patents

Abstract

The utility model provides a rack-type OLT device. The OLT device includes a main board, an adapter board and two PON modules. The mainboard includes the uplink port of the OLT device, and the adapter board is responsible for transmitting data from the mainboard to the PON module, and then the PON module transmits the data to the downlink user EPON terminal. The main board realizes the data exchange with the uplink device and realizes the management function of the PON module. The rack-type OLT equipment provided by the utility model does not need a separate management module, and has the advantages of simple structure, low production cost, convenient maintenance and good stability.

Description

A rack-mounted OLT device

technical field

The utility model relates to the technical field of Ethernet passive optical network, in particular to a rack type OLT (Optical Line Terminal, optical line terminal) equipment.

Background technique

PON (Passive Optical Network, Passive Optical Network) is a pure media network, with the characteristics of low failure rate, high reliability, low maintenance cost, high anti-interference ability, etc., combined with Ethernet to form EPON (Ethernet Passive Optical Network, Ethernet Passive Optical Network). EPON is a new type of optical fiber access network technology. It adopts point-to-multipoint structure and passive optical fiber transmission. The physical layer adopts PON technology, and the link layer uses Ethernet protocol. Various services are provided on the Ethernet, which has the advantages of low cost, high bandwidth, strong scalability, and compatibility with Ethernet.

Rack-mounted OLT equipment has high reliability and high-density EPON access capabilities, can provide 32 PON ports, and can provide users with broadband, voice, IPTV (Interactive Network Television), CATV (Community Antenna Television, cable TV) and other integrated services. At present, the design structure of rack-mounted OLT equipment is complex, which increases the pressure on equipment production costs and increases the risk of network operation and maintenance.

Utility model content

The technical problem to be solved by the utility model is to provide a rack-type OLT device, which has the advantages of simple structure, low production cost, convenient maintenance and good stability.

In order to solve the above technical problems, the utility model provides a rack type OLT equipment, comprising:

Main board, including a first CPU, a plurality of first PHYs, a first connector, a second connector, an optical port and an electrical port, the first CPU is connected to a plurality of the first PHYs, and the plurality of the first PHYs Respectively connect the first connector, the second connector, the optical port and the electrical port, the optical port and the electrical port are connected to the uplink device of the OLT device;

The adapter board includes third to eighth connectors, a first switch and a second switch, the third connector is connected to the fourth connector, the fifth connector is connected to the sixth connector, and the first A switch is respectively connected to the third and fourth connectors, and the second switch is respectively connected to the fifth and sixth connectors;

Two PON modules, each PON module includes a second CPU, a second PHY, a ninth connector and an optical module, the second CPU is respectively connected to the second PHY, the ninth connector and an optical module, and the second The PHY is connected to the ninth connector;

Wherein, the first and second connectors of the main board are respectively connected to the third and fifth connectors of the adapter board, and the ninth connectors of the two PON modules are respectively connected to the first and fifth connectors of the adapter board. Fourth, the sixth connector.

According to an embodiment of the present invention, the adapter board is in the shape of a backboard, and the main board and the two PON modules are in the shape of a drawer and can be mated with the adapter board to be suitable for a 2U server chassis.

According to an embodiment of the present invention, the motherboard further includes a first memory and a first flash memory connected to the first CPU.

According to an embodiment of the present invention, multiple first PHYs and the first CPU adopt QSGMII bus to transmit data, and one said first PHY and the electrical port adopt IEEE802.3ab protocol standard transmission For data, the IEEE802.3z protocol standard is used to transmit data between the first PHY and the optical port, and the Serdes data protocol is used for data transmission between the other two first PHYs and the first and second connectors .

According to an embodiment of the present invention, the PON module further includes a second memory and a second flash memory connected to the second CPU.

According to an embodiment of the present invention, it further includes a main power module and a backup power module, the main power module and the backup power module are connected to the seventh connector of the adapter board, the main power module and the The standby power supply module supplies power to the OLT equipment at the same time.

According to an embodiment of the present invention, it further includes a fan module connected to the eighth connector of the adapter board, the fan module can be the main board, the adapter board, the PON module, the The main power module and the standby power module dissipate heat.

According to an embodiment of the present invention, the fan module includes a fan, and the fan module can collect the temperature of the main board and the adapter board, and control the rotation speed of the fan according to the temperature, so that the The OLT equipment works within a set temperature range.

The utility model provides a rack-type OLT device, which uses the CPU of the main board for management and control, replacing the design of an independent management module, so that the device has the advantages of simple structure, low production cost, convenient maintenance, and good stability.

Description of drawings

The drawings are included to provide a further understanding of the utility model, they are included and constitute a part of the application, the drawings show the embodiments of the utility model, and play a role in explaining the principle of the utility model together with the specification. In the attached picture:

Fig. 1 shows a logic diagram of an embodiment of the present invention.

detailed description

Embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Wherever possible, the same numbers will be used throughout the drawings to refer to the same or like parts. In addition, although the terms used in this utility model are selected from known and commonly used terms, some terms mentioned in the specification of this utility model may be selected by the applicant according to his or her judgment, and their detailed meanings Indicated in the relevant part of the description of this article. Furthermore, it is required that the present invention be understood not only by the actual terms used, but also by the meaning implied by each term.

Fig. 1 shows a logic diagram of an embodiment of the present utility model. As shown in the figure, a rack-type OLT device includes a main board 20 , an adapter board 30 and two PON modules 40 . The mainboard 20 includes an uplink port of the OLT device, and the adapter board 30 is responsible for transmitting data from the mainboard 20 to the PON module 40, and then the PON module 40 transmits the data to the downlink user EPON terminal. The main board 20 realizes the data exchange with the uplink device and realizes the management function of the PON module 40 .

The mainboard 20 includes a first CPU 21 , a plurality of first PHYs 22 , a first connector 28 , a second connector 29 , an optical port 26 and an electrical port 27 . Among them, PHY refers to the physical layer (Physical Layer) chip. Usually, a main chip has multiple PHY modules. The functions and functions of these PHY modules are the same, which can be understood as the role of a "pipe". The first CPU 21 is connected to a plurality of first PHYs 22, and the plurality of first PHYs 22 are respectively connected to the first connector 28, the second connector 29, the optical port 26 and the electrical port 27, that is, the first CPU 21 communicates with the first CPU 21 through different "pipes" The first connector 28, the second connector 29, the optical port 26 and the electrical port 27 are connected. Wherein the optical port 26 and the electrical port 27 are connected with the uplink device of the OLT device. In one embodiment, the mainboard 20 further includes a management port 25, and the first CPU 21 is connected to the management port 25 through another first PHY22.

The adapter board 30 includes third to eighth connectors 31 - 36 , a first switch 37 and a second switch 38 . The third connector 31 is connected to the fourth connector 32 , and the fifth connector 33 is connected to the sixth connector 34 . The first switch 37 is connected to the third and fourth connectors 31 and 32 respectively, and the second switch 38 is connected to the fifth and sixth connectors 33 and 34 respectively.

Two PON modules 40 , each PON module 40 includes a second CPU 41 , a second PHY 44 , a seventh connector 45 and an optical module 46 . The second CPU 41 is connected to the second PHY 44 , the ninth connector 45 and the optical module 46 respectively. The second PHY44 is connected to the ninth connector 45 . The second CPU 41 of the PON module 40 is used to realize the management and control function of the EPON data service, and at the same time, perform forwarding processing on the converted digital signal. Two PON modules 40 provide service aggregation of 64 ONUs (Optical Network Units, Optical Network Units), which can perform data communication according to broadcast and TDMA methods, are easy to install and use, and support automatic and manual registration of ONUs.

The first and second connectors 28 and 29 of the main board 20 are respectively connected to the third and fifth connectors 31 and 33 of the adapter board. The ninth connectors 45 of the two PON modules 40 are respectively connected to the fourth and sixth connectors 32 and 34 of the adapter board. The data channel of the OLT device is connected to the uplink device through the optical port 26 or the electrical port 27 in the main board 20, and the data is transmitted from the first PHY22 of the main board 20 to the first CPU of the main board 20 after passing through the optical port 26 or the electrical port 27 21. After the first CPU 21 performs data processing, it transmits the data to the second CPU 41 of the PON module 40 through the adapter board 30, and sends the data to the optical module 46 of the PON module 40 after the second CPU performs data processing again. 46. Send data to the downlink user EPON terminal. A management component is configured in the first CPU 21 of the motherboard 20 . The management channel of the OLT equipment is to manage the second CPU 41 of the PON module 40 through the first CPU 21 of the main board 20, so no dedicated management module is needed. The main board 20 is connected to the PON module 40 through the adapter board 30 to implement data exchange between the first PHY 22 of the main board 20 and the second PHY 44 of the PON module 40 to realize control and management.

Further, the OLT equipment adopts a rack-mounted 2U chassis design, and its adapter board 30 is designed in the shape of a backplane, and the main board 20 and two PON modules 40 are designed in a drawer shape and can be mated with the adapter board 30, which can provide 32 PON interfaces.

On the other hand, the motherboard 20 also includes a first memory 24 and a first flash memory 23 connected to the first CPU 21 . The first memory 24 may be a DDR3 memory, and DDR3 (Double Data Rate 3) refers to a synchronous dynamic random access memory. Data transmission can be performed between the first CPU 21 and the first flash memory 23 through a serial interface.

In a preferred embodiment of the present invention, the multiple first PHYs 22 of the main board 20 and the first CPU 21 use QSGMII bus to transmit data. The IEEE802.3ab protocol standard is used to transmit data between a first PHY22 and the electrical port 27, and the IEEE802.3z protocol standard is used to transmit data between the first PHY22 and the optical port 26. The other two first PHYs 22 and the first and second connectors 28 and 29 use the Serdes (SERializer/DESerializer, serializer/deserializer) data protocol for data transmission.

Referring to FIG. 1 , the PON module 40 further includes a second memory 43 and a second flash memory 42 . The second memory 43 may be a DDR2 memory, and DDR2 (Double Data Rate 2) refers to a synchronous dynamic random access memory. The second memory 43 and the second flash memory 42 are respectively connected to the second CPU 41 . The second memory 43 is used to buffer the data processed by the second CPU 41 , so as to ensure that when the data processed by the first CPU 21 is saturated, the data frame will not be lost, and at the same time, the data processing efficiency can be improved.

Preferably, the OLT device further includes a main power module 10 and a backup power module 11 . The main power module 10 and the backup power module 11 are plugged into the seventh connector 35 connected to the adapter board 30 through the rear. The main power supply module 10 and the standby power supply module 11 can supply power to the OLT equipment at the same time. When the OLT device detects that one of the power supplies is working abnormally, the other power supply can still maintain the normal operation of the OLT device and send out an error signal at the same time. The power supply abnormality message containing the error signal is submitted to the equipment network management platform, and the operation and maintenance personnel can replace it in time. The abnormal power supply is cut off, so that the normal operation of the equipment will not be affected, and the stability of the equipment will be improved.

Preferably, the OLT device further includes a fan module 50 . The fan module 50 is connected to the eighth connector 36 of the adapter board 30 , and the fan module 50 is used for cooling the main board 20 , the adapter board 30 , the PON module 40 , the main power module 10 and the backup power module 11 .

The fan module 50 can collect the temperature of the main board 20 and the adapter board 30, and control the rotation speed of its fan according to the temperature, so that the OLT device can work within a set temperature range and realize the intelligent management of the internal temperature of the chassis.

The rack-type OLT equipment provided by the utility model, in order to solve the shortcomings of the existing rack-type OLT equipment in terms of complex design and structure, uses the main board CPU for management and control, replacing the independent management module; in addition, the main power supply module, backup The power module design and intelligent temperature management design make the OLT equipment have the advantages of simple structure, low production cost, convenient maintenance and good stability.

It will be apparent to those skilled in the art that various modifications and variations can be made to the above-described exemplary embodiments of the present invention without departing from the spirit and scope of the present invention. Therefore, it is intended that the present utility model cover the modifications and variations of the present utility model within the scope of the appended claims and their equivalent technical solutions.

Claims (8)

1. A rack-mounted OLT device, characterized in that, comprising: Main board, including a first CPU, a plurality of first PHYs, a first connector, a second connector, an optical port and an electrical port, the first CPU is connected to a plurality of the first PHYs, and the plurality of the first PHYs Respectively connect the first connector, the second connector, the optical port and the electrical port, the optical port and the electrical port are connected to the uplink device of the OLT device; The adapter board includes third to eighth connectors, a first switch and a second switch, the third connector is connected to the fourth connector, the fifth connector is connected to the sixth connector, and the first A switch is respectively connected to the third and fourth connectors, and the second switch is respectively connected to the fifth and sixth connectors; Two PON modules, each PON module includes a second CPU, a second PHY, a ninth connector and an optical module, the second CPU is respectively connected to the second PHY, the ninth connector and an optical module, and the second The PHY is connected to the ninth connector; Wherein, the first and second connectors of the main board are respectively connected to the third and fifth connectors of the adapter board, and the ninth connectors of the two PON modules are respectively connected to the first and fifth connectors of the adapter board. Fourth, the sixth connector. 2. A kind of rack type OLT equipment as claimed in claim 1, is characterized in that, described adapter board is backboard shape, and described main board and two described PON modules are drawer card shape and can be connected with described The adapter board is mated to fit in a 2U server chassis. 3. A rack-mounted OLT device as claimed in claim 1, wherein the motherboard further comprises a first memory and a first flash memory connected to the first CPU. 4. A kind of rack type OLT equipment as claimed in claim 1, is characterized in that, adopts QSGMII bus to transmit data between a plurality of described first PHYs and described first CPU, one described first PHY and the described first PHY The IEEE802.3ab protocol standard is used to transmit data between the electrical ports, and the IEEE802.3z protocol standard is used to transmit data between the optical ports, and the other two first PHYs and the first and second connectors The Serdes data protocol is used for data transmission. 5. A rack type OLT device as claimed in claim 1, wherein the PON module further comprises a second memory and a second flash memory connected to the second CPU. 6. A kind of rack-mounted OLT equipment as claimed in claim 1, is characterized in that, also comprises main power supply module and standby power supply module, and described main power supply module and described standby power supply module are connected the first of described adapter plate Seven connectors, the main power module and the backup power module supply power to the OLT equipment at the same time. 7. A kind of rack type OLT equipment as claimed in claim 6, is characterized in that, also comprises fan module, is connected with the 8th connector of described adapter board, and described fan module can be described mainboard, all The adapter board, the PON module, the main power module and the backup power module dissipate heat. 8. A kind of rack type OLT equipment as claimed in claim 7, is characterized in that, described fan module comprises fan, and described fan module can collect the temperature of described main board and described adapter plate, and according to described temperature to control the rotation speed of the fan, so that the OLT device works within a set temperature range.