CN113259781A - Connection structure and device mounting method - Google Patents

Abstract

The application discloses a connecting structure and an equipment installation method. The main frame comprises a main frame switching network board component, the main frame switching network board component comprises a main frame and an external line card interface, the line card box comprises one or more line card box line cards, and the line card box line cards comprise line card boxes and external switching interfaces. The main frame and the line card box can be connected with the external line card interface and the external exchange interface of the line card box through the main frame. The connection structure that this application embodiment provided can change connection structure's complete machine capacity through the quantity that changes the ply-yarn drill box of being connected with main frame to, when the bandwidth demand exceeded the complete machine capacity of router, can increase the quantity of the ply-yarn drill box of being connected with main frame, come to expand connection structure's complete machine capacity.

Description

Connection structure and device mounting method

The present application claims priority from chinese patent application No. 202010085233.1 entitled "device architecture" filed 10/02/2020 and from chinese patent application No. 202010108519.7 entitled "device architecture" filed 21/02/2020, the entire contents of which are incorporated herein by reference.

Technical Field

The present application relates to the field of communications technologies, and in particular, to a connection structure and an apparatus installation method.

Background

The router generally comprises a plurality of line cards and a switching network board, wherein each line card is provided with a switching interface, and the switching network board is provided with a wired card interface. The exchange interface of each line card is connected with the line card interface arranged on the exchange network board, thus, data can be exchanged among the line cards through the exchange network board. In addition, a network interface for connecting to an external network is generally provided on the line card.

The capacity of the whole router is a key index of the router, and can be expressed as the product of the maximum number of pluggable line cards inside the router and the bandwidth of a single line card. For example, if the maximum number of pluggable line cards in a router is N and the bandwidth of a single line card is R, the overall capacity of the router is nxr.

In the use process of the router, as the traffic volume increases, the use requirement of the bandwidth may exceed the whole capacity of the router. Therefore, how to reasonably expand the whole capacity of the router is a problem worthy of research.

Disclosure of Invention

The embodiment of the application provides a connection structure, and this connection structure includes main frame and one or more line card boxes, through increasing the quantity of the line card box of being connected with main frame, can carry out reasonable extension to the complete machine capacity of the equipment or the network that connection structure is located. The connection structure is as follows:

the embodiment of the application provides a connection structure, connection structure includes main frame and one or more line card box, wherein, main frame includes main frame switched network board subassembly, main frame switched network board subassembly is including the outer ply-yarn drill interface of main frame that is used for being connected with the ply-yarn drill. Each line card box comprises one or more line card box line cards, and the one or more line card box line cards comprise a line card box external-to-external exchange interface used for being connected with the exchange network board. The main frame and the one or more line card boxes are connected with the external line card interface through the main frame and the external line card exchange interface through the line card boxes.

Wherein, the main frame includes the main frame exchange switchboard subassembly. The main frame can also comprise a main frame back plate, a switching network plate groove can be formed in the main frame back plate, one or more main frame switching network plates in the main frame switching network plate component can be inserted into the switching network plate groove, and the connection among the main frame switching network plates can be realized through the main frame back plate. The main frame back plate can also bear power supply, management communication and the like in the main frame.

The line card box comprises one or more line card box line cards, wherein a back plate and a switching network plate can be omitted. Each line card box line card can be provided with a wired card box external exchange interface. When line card box and main frame are connected, can be that all line card box ply-yarn drill in the line card box are connected with main frame, also can be that part line card box ply-yarn drill is connected with main frame, consequently, the dilatation granularity of the connection structure that this application embodiment provided is a line card box ply-yarn drill, and the dilatation granularity is less. The line card shelf may also include separate power and heat dissipation systems.

In some embodiments, the device on which the connection structure is located is a routing device or a switching device. In some embodiments, the routing device or switching device may be a virtual routing device or a virtual switching device deployed on a physical device, such as a virtual switch vSwitch.

In some embodiments, the connection structure may be located in a data center, a switching box is deployed in a Core node of the data center, and a plurality of line card boxes are connected, the line card boxes are located at top of rack (TOR) switches, the line card boxes are connected to a server or a physical terminal device, and a virtual machine may be deployed on the server.

The connection between the main frame and the line card box, that is, the connection between the main frame and the external line card interface and the connection between the line card box and the external exchange interface, may be implemented by a cable or an optical cable. Specifically, the method can be selected according to the actually required transmission rate, the actually required distance and the cost budget, wherein the cable is low in cost, but the rate is slow, and the transmission distance is short; optical cables are fast, long transmission distances, but high cost.

The main frame switching network board component refers to a switching network board component in the main frame. The main frame switching network board assembly comprises one or more main frame switching network boards, and each main frame switching network board can comprise one or more switching net sheets for switching data between different line cards.

The line card box line card is a line card in a line card box, and the line card box line card can also comprise a line card box network interface besides a line card box external exchange interface, and the line card box network interface is used for being connected with a network. The line card box may include one or more network processing chips therein, and is configured to perform uplink processing on datagrams received from the line card box network interface, and send the datagrams to the line card box to be sent to the external switching interface, or perform downlink processing on data packets received from the line card box to be sent to the line card box network interface.

According to the scheme shown in the embodiment of the application, one main frame can be connected with one or more line card boxes. When the demand for the bandwidth is small, the number of the line cassette connected to the main frame can be reduced to reduce the cost of the line cassette. When the required amount of the bandwidth is large, the number of the line card boxes connected with the main frame can be increased, so that the whole capacity of the equipment or the network where the connection structure is located can be expanded. Therefore, the device or the network where the connection structure provided by the embodiment of the application is located can reasonably and efficiently expand the capacity of the whole machine.

In addition, the main frame switching network board assembly in the main frame is connected with the line card box line card in the line card box, but not the main frame switching network board assembly is connected with the switching network board in the line card box, and then the switching network board is connected with the line card box line card, so that the switching level is reduced, the connection relation is simplified, and the switching resources are saved.

In addition, the main frame switching network board assembly can be respectively connected with each line card box line card in the line card box. Therefore, the capacity expansion granularity of the equipment or the network where the connection structure is located can be one line card box line card, and the capacity expansion granularity is smaller, so that the capacity expansion is more flexible, and the capacity expansion cost is saved.

In a possible implementation manner, the main frame switching network board assembly includes a plurality of main frame switching network boards, the plurality of main frame switching network boards are in a single-stage switching network structure, and each main frame switching network board includes the main frame external line card interface.

In the solution shown in the embodiment of the present application, the multiple main frame switch network boards included in the main frame switch network board assembly may be a single-stage switch network structure, and the levels of each main frame switch network board are equal. Each main frame exchange network board can be provided with a main frame external line card interface.

In a possible implementation manner, the main frame switch network board assembly includes a plurality of main frame switch network boards, the plurality of main frame switch network boards are in a multi-stage switch network structure, and a last stage main frame switch network board in the plurality of main frame switch network boards includes the main frame external line card interface.

Wherein, the last stage main frame exchange network board can also be called as a first stage main frame exchange network board.

In the solution shown in the embodiment of the present application, the plurality of main frame switch network boards included in the main frame switch network board assembly may be a multi-stage switch network structure, for example, a two-stage switch network structure. A main frame external line card interface may be provided on each last-stage main frame switching network board.

In one possible implementation, the main frame further includes one or more main frame line cards, and the one or more main frame line cards are connected with the main frame switching network board assembly.

The main frame line card is a line card inside the main frame. The connection between the main frame line card and the main frame switching network board assembly can be through a main frame backplane.

In the solution shown in the embodiment of the present application, the main frame may further include one or more main frame line cards, so that the main frame provided in the embodiment of the present application may be used alone as a router, and not only as a switch frame. Also, this allows the user to purchase the main frame separately without having to purchase a mating cartridge. When the whole machine capacity of the main frame does not meet the bandwidth requirement, the line card box can be purchased to expand the whole machine capacity of the main frame.

In a possible implementation manner, the main frame switching network board assembly further includes a main frame external switching interface used for being connected with the switching network board.

According to the scheme shown in the embodiment of the application, the router is mostly of a wire clamp frame structure and comprises a wire clamp, a back plate and an exchange network plate, wherein the wire clamp and the exchange network plate are connected through the back plate. One expansion mode of the router is that the external exchange interface of the exchange network board inside the router is connected with the external exchange interfaces of other exchange network boards, so that the expansion of the router is completed.

Therefore, the main frame external exchange interface used for being connected with the exchange network board is arranged on the main frame exchange network board assembly, so that the existing router (or called as a line card frame) can also be connected with the main frame provided by the embodiment of the application, the expansion of the existing router is compatible, and the unnecessary waste of the router during updating and updating is avoided.

In addition, through the above design, the main frame may also be connected with other main frames, that is, the main frame external exchange interface of one main frame is connected with the main frame external exchange interface of another main frame, thereby increasing the number of main frame exchange network boards in the router and increasing the capacity expansion capability of the router.

In a possible implementation manner, the router further includes a line card frame, where the line card frame includes a line card frame switching network board assembly and one or more line card frame line cards, the one or more line card frame line cards are connected with the line card frame switching network board assembly, and the line card frame switching network board assembly includes a line card frame external switching interface used for being connected with a switching network board. The main frame and the line card frame are connected through the main frame external exchange interface and the line card frame external exchange interface.

Wherein, the structure of the wire clamping frame can be consistent with that of the wire clamping frame in the prior art.

According to the scheme shown in the embodiment of the application, the connecting structure can be further provided with a wire clamp frame. The line card frame comprises a line card frame switching network board assembly and one or more line card frame line cards, and can also comprise a line card frame back plate. The connection between the line card frame line card and the line card frame exchange network board can be realized through a line card frame backboard. The line card frame switching network board component can comprise one line card frame switching network board or a plurality of line card frame switching network boards. When the switching network board comprises a plurality of line card frame switching network boards, the plurality of line card frame switching network boards can be of a single-stage network structure or a multi-stage switching network structure.

In a possible implementation manner, the connection structure further includes a crossing device, and the crossing device is connected to the external line card interface of the main frame and the external line card exchange interface of the line card box respectively.

The crossing device may include a crossing module and a plurality of crossing interfaces, the plurality of crossing interfaces are disposed on the crossing module, and the crossing module is configured to establish a logical direct connection relationship or a physical direct connection relationship between the crossing interfaces. The logical direct connection relationship or the physical direct connection relationship means that, if the logical direct connection relationship or the physical direct connection relationship is established between the first cross interface and the third cross interface, all data received by the first cross interface can be sent to the third cross interface through the cross module, and all data received by the third cross interface can also be sent to the first cross interface through the cross module. The crossover differs from the exchange in that the exchange requires parsing of the data and selects an interface based on the destination address contained in the data, whereas the crossover does not require parsing of the data.

According to the scheme shown in the embodiment of the application, one part of the cross interfaces of the cross device are connected with the main frame external line card interfaces of the main frame, the other part of the cross interfaces are connected with the line card box external exchange interfaces of the line card box, and the logical direct connection relation or the physical direct connection relation between the main frame external line card interfaces and the line card box external exchange interfaces is established.

By arranging the crossing device, when the data transmission rate of the line card box to the external exchange interface is not matched with the data transmission rate of the main frame to the external line card interface, the crossing device can complete rate matching. Moreover, the existence of the crossing device also makes the wiring more concise.

In a possible implementation manner, the crossing device is configured to match data transmission rates of the main frame to the external line card interface and the line card box to the external switching interface.

In one possible implementation, the crossing device is a cross-bar switch matrix or a configurable optical switch or a passive optical cable or a passive electrical cable or a cross-bar optical cable or a wavelength division device.

The CrossBar may also be referred to as CrossBar chip, among others.

The passive cables, passive optical cables and cross-over optical cables can realize physical direct connection among cross-over interfaces. The CrossBar chip and the configurable optical switch can realize logic direct connection between the cross interfaces.

In one possible implementation manner, the interface type of one or both of the main frame external line card interface and the line card box external exchange interface is not matched with the crossing type of the crossing device. The connection structure also comprises a photoelectric conversion device when positioned in the router or the switch, and two ends of the photoelectric conversion device are respectively connected with the crossing device and one interface or two interfaces.

The interface type comprises an electrical interface and an optical interface, and the cross type comprises an electrical cross and an optical cross. The photoelectric conversion device is used for performing photoelectric conversion on data.

In the solution shown in the embodiment of the present application, when the interface type of the main frame to the external line card interface and the interface type of the line card box to one or two of the external switching interfaces are not matched with the cross type of the cross device, the router must further have a photoelectric conversion device to perform photoelectric conversion on data, so that the data can be normally transmitted. The number of photoelectric conversion devices coincides with the number of interfaces that do not match the cross type of the cross device.

The interface type of the main frame to the external line card interface and the line card box to one or two of the external switching interfaces may not match with the crossing type of the crossing device, which may be six types:

first, the main frame is an electrical interface to the external line card interface, the line card box is an optical interface to the external exchange interface, and the crossing device is an optical crossing. In this case, two ends of the photoelectric conversion device are respectively connected with the main frame and the external line card interface and the crossing device.

In the second type, the main frame is an electrical interface to the external line card interface, the line card box is an optical interface to the external exchange interface, and the crossing device is an electrical crossing. In this case, both ends of the photoelectric conversion device are respectively connected with the external exchange interface of the cable cassette and the cross device.

And thirdly, the main frame is an optical interface for the external line card interface, the line card box is an electrical interface for the external exchange interface, and the crossing device is an electrical crossing. In this case, two ends of the photoelectric conversion device are respectively connected with the main frame and the external line card interface and the crossing device.

And fourthly, the main frame is an optical interface to the external line card interface, the line card box is an electrical interface to the external exchange interface, and the crossing device is optical crossing. In this case, both ends of the photoelectric conversion device are respectively connected with the external exchange interface of the cable cassette and the cross device.

And fifthly, the main frame is an electrical interface for the external line card interface and the line card box is an electrical interface for the external exchange interface, and the crossing device is optical crossing. In this case, a photoelectric conversion device is connected between the external line card interface and the cross device of the line card box, and a photoelectric conversion device is also connected between the external line card interface and the cross device of the main frame.

And sixthly, the main frame is an optical interface for the external line card interface and the line card box external exchange interface, and the crossing device is an electric crossing. In this case, a photoelectric conversion device is connected between the external line card interface and the cross device of the line card box, and a photoelectric conversion device is also connected between the external line card interface and the cross device of the main frame.

The photoelectric conversion device may be independent from the crossing device or integrated in the crossing device, which is not limited in the present application.

In one possible implementation, the crossing means is independent of the main frame and the thread cassette.

According to the scheme shown in the embodiment of the application, the crossing device can be used as a component independent of the main frame and the line card box. In this way, a plurality of line cassettes can share one crossing device, thereby reducing the number of crossing devices. And when any one of the main frame, the line card box and the crossing device is damaged, only the damaged part can be replaced, thereby saving the cost.

In one possible implementation, the crossing device is fixed in the line cassette.

According to the scheme shown in the embodiment of the application, the cross device can be further fixed in the line card box, and specifically, two fixing modes can exist:

the first is to set a backboard of the line card box in the line card box, the crossing device and the line card box line card are inserted together in the backboard, the connection of the crossing device and the line card box line card is realized by the wiring of the backboard of the line card box. In this case, the line card box pair external switching interface of the line card box line card is provided on the backplane side. In this fixing mode, when the crossing device is damaged, the damaged crossing device can be replaced and plugged on the back plate of the line card box again.

Second, the crossing device is directly fixed on the line card box line card and can be directly manufactured into an integral structure with the line card box line card.

In a possible implementation, the crossing means is fixed in the main frame.

According to the scheme shown in the embodiment of the application, the crossing device can be fixed in the main frame, so that a plurality of line boxes can share one crossing device. In addition, the crossing device is fixed in the main frame, the number of parts contained in the router is reduced, and the use experience of a user is improved.

In one possible implementation, the line card box is a switching and network multiplexing interface to an external switching interface.

The switching and network multiplexing type interface may be used as a network interface or an interface used as a switching interface.

According to the scheme shown in the embodiment of the application, all the external interfaces on the line card of the line card box can be switched and network multiplexing interfaces without distinguishing the switched interfaces or the network interfaces in physical form.

If the exchange and network multiplexing type interface is connected to the external line card interface of the main frame, the role of the exchange and network multiplexing type interface is switched to an exchange interface, and the interface is used for sending uplink flow from the line card box line card to the main frame exchange network board for exchange or sending downlink flow from the main frame exchange network board to the line card box line card. If the switching and network multiplexing type interface is connected to a network, the role of the interface is switched to a network interface, and the interface plays a role of transmitting data of the network into a router or transmitting data of the router out of the interface to the network. It should be noted that the above role switching process may be automatically detected and completed, or may be completed through control plane configuration.

The line card box external exchange interface is set as an exchange and network multiplexing interface, so that the deployment and connection are more flexible, and the exchange interface and the network interface are not needed to be distinguished, and the plug and play are realized. Moreover, under the condition of limited interface resources, the occupation ratio can be flexibly configured between the exchange interface and the network interface, and different scenes can be better adapted.

The beneficial effects brought by the technical scheme provided by the embodiment of the application at least comprise:

the application discloses a connection structure, and the connection includes a main frame and one or more line card boxes. The main frame comprises a main frame switching network board component, the main frame switching network board component comprises a main frame and an external line card interface, the line card box comprises one or more line card box line cards, and the line card box line cards comprise line card boxes and external switching interfaces. The main frame and the line card box can be connected with the external line card interface and the external exchange interface of the line card box through the main frame. The connection provided by the embodiment of the application can change the whole capacity of the equipment where the connection structure is located by changing the number of the line card boxes connected with the main frame, so that when the bandwidth requirement exceeds the whole capacity of the equipment, the number of the line card boxes connected with the main frame can be increased, and the whole capacity of the router is expanded.

Drawings

Fig. 1 is a schematic diagram of a router provided in an embodiment of the present application;

fig. 2 is a schematic diagram of a router provided in an embodiment of the present application;

fig. 3 is a schematic diagram of a router provided in an embodiment of the present application;

fig. 4 is a schematic diagram of a router provided in an embodiment of the present application;

fig. 5 is a schematic diagram of a router provided in an embodiment of the present application;

fig. 6 is a schematic diagram of a router provided in an embodiment of the present application;

fig. 7 is a schematic diagram of a router provided in an embodiment of the present application;

fig. 8 is a schematic diagram of a router provided in an embodiment of the present application;

fig. 9 is a schematic view of a cross-over fiber optic cable provided by an embodiment of the present application.

Description of the figures

1. A main frame, 11, a main frame switching network board assembly, 111, a main frame external line card interface, 112, a main frame external switching interface, 12, a main frame line card, 121, a main frame network interface, 13, and a main frame backplane;

2. the line card box comprises a line card box body, 21 line card of the line card box body, 22 a line card box back plate, 211 a line card box to external exchange interface, 212 and a line card box network interface;

3. the line card frame comprises a line card frame 31, a line card of the line card frame 32, a line card frame exchange network board assembly 321, an external exchange interface of the line card frame 33 and a line card frame back board;

4. and (4) a crossing device.

Detailed Description

Embodiments of the present application provide a connection device that includes a main frame and one or more line cards. The user can use the connection equipment provided by the embodiment of the application, and the whole capacity of the connection equipment can be automatically increased or decreased along with the change of the traffic. Specifically, when the traffic is small, the number of the line card boxes connected with the main frame can be reduced to reduce the cost of additional line card boxes; when the traffic is larger, the number of the wire card boxes connected with the main frame can be increased, so that the whole capacity of the connecting equipment is expanded, and the whole capacity of the connecting equipment meets the bandwidth requirement.

The embodiment of the present application provides a connection device, which takes a router as an example, but the connection device of the embodiment of the present application may also be used in various switching devices and data center networks. As shown in fig. 1 to 8, the router includes a main frame 1 and one or more line card boxes 2, wherein the main frame 1 includes a main frame switching fabric assembly 11, and the main frame switching fabric assembly 11 includes a main frame external line card interface 111 for connecting with a line card. Each line card box 2 includes one or more line card box line cards 21, and the line card box line cards 21 include a line card box external exchange interface 211 for connection with an exchange network board. The main frame 1 and the one or more line card boxes 2 are connected through the main frame to the line card external interface 111 and the line card box external exchange interface 211.

Wherein, the main frame 1 includes a main frame switching network board assembly 11. The main frame 1 may further include a main frame back board 13, the main frame back board 13 may be provided with a switching network board slot, one or more main frame switching network boards in the main frame switching network board assembly 11 may be inserted into the switching network board slot, and the connection between the main frame switching network boards may be implemented through the main frame back board 13. The main frame back board 13 can also provide power supply, management communication and the like in the main frame 1.

The line cassette 2 includes one or more line cassette line cards 21, in which a backplane and an exchange screen may not be provided. Each line card box line card 21 may be provided with a cable card box external exchange interface 211. When the line card box 2 is connected with the main frame 1, all the line card box line cards 21 in the line card box 2 may be connected with the main frame 1, and also part of the line card box line cards 21 may be connected with the main frame 1, so that the capacity expansion granularity of the router provided by the embodiment of the present application is one line card box line card 21, and the capacity expansion granularity is smaller. The cassette 2 may also include separate power and heat dissipation systems.

The connection between the main frame 1 and the line card box 2, that is, the connection between the main frame and the external line card interface 111 and the line card box and the external exchange interface 211, may be implemented by a cable or an optical cable. Specifically, the method can be selected through actually required transmission rate, actual distance and cost budget, wherein the cable cost is low, but the rate is slow, and the transmission distance is short; optical cables are fast, long transmission distances, but high cost.

The main frame switching network board assembly 11 refers to a switching network board assembly in the main frame. The main frame switching network board assembly 11 includes one or more main frame switching network boards, and each main frame switching network board may include one or more switching mesh sheets for exchanging data between different line cards.

The line card box line card 21 refers to a line card in a line card box, and the line card box line card 21 may further include a line card box network interface 212 in addition to the line card box external exchange interface 211. The line card box line card 21 may include one or more network processing chips therein, and is configured to perform uplink processing on a data packet received from the line card box network interface 212 and send the data packet to the line card box external switch interface 211, or perform downlink processing on a data packet received from the line card box external switch interface 211 and send the data packet to the line card box network interface 212.

In the embodiment shown in the present application, a main frame 1 may be connected to one or more line card boxes 2. When the demand for bandwidth is small, the number of line card boxes 2 connected to the main frame 1 can be reduced to reduce the cost of the line card box 2. When the required amount of the bandwidth is large, the number of the line card boxes 2 connected with the main frame 1 can be increased to expand the whole capacity of the router. Therefore, the router provided by the embodiment of the application can reasonably and efficiently expand the capacity of the whole router.

In addition, the main frame switching network board assembly 11 in the main frame 1 is connected with the line card box line card 21 in the line card box 2, but not after the main frame switching network board assembly 11 is connected with an external switching network board, the external switching network board is connected with the line card box line card 21, so that the switching level is reduced, the connection relation is simplified, and the switching resources are saved.

In addition, the main frame switching network board assembly 11 may be connected to each of the line card boxes 2 in the line card box line card 21, respectively. Therefore, the capacity expansion granularity of the router can be one line card box line card 21, and the capacity expansion granularity is smaller, so that the capacity expansion is more flexible, and the capacity expansion cost is saved.

It should be noted that the working principle of the router provided in the embodiment of the present application may be as follows:

the message enters the router from the line card box line card 21 of the line card box 2, the uplink processing is carried out on the line card box line card 21, and the downlink card number and the output interface number are obtained through route searching;

sending the message to a main frame exchange network board of a main frame 1, and exchanging the message by the main frame exchange network board according to the downlink card number;

the main frame exchange network board sends the message to a line card box line card 21 corresponding to the downlink card number through a direct connection channel;

the line card box line card 21 performs downlink processing on the packet and then sends out the packet from the output interface.

In one possible implementation, the line card box to external switch interface 211 is a switch and network multiplexing type interface.

The switching and network multiplexing type interface may be used as a network interface or an interface used as a switching interface.

In the solution shown in the embodiment of the present application, all the external interfaces on the line card box and the line card 21 may not be physically distinguished as the switching interface or the network interface, and are all switching and network multiplexing type interfaces.

If the exchange and network multiplexing type interface is connected to the external line card interface 111 of the main frame, the role of the exchange and network multiplexing type interface is switched to an exchange interface, and at this time, the role of the interface is to send the uplink traffic from the line card box line card 21 to the main frame exchange network board for exchange, or send the downlink traffic from the main frame exchange network board to the line card box line card 21. If the switching and network multiplexing type interface is connected to a network, the role of the interface is switched to a network interface, and the interface plays a role of transmitting data of the network into a router or transmitting data of the router out of the interface to the network. It should be noted that the above role switching process may be automatically detected and completed, or may be completed through control plane configuration.

The line card box external exchange interface 211 is set as an exchange and network multiplexing type interface, so that the deployment and connection are more flexible, and the exchange interface and the network interface are not needed to be distinguished, and the plug and play are realized. Moreover, under the condition of limited interface resources, the occupation ratio can be flexibly configured between the exchange interface and the network interface, and different scenes can be better adapted.

In another possible implementation, the line card box external switching interface 211 may be an interface only used for connecting to the main frame switching network board, in which case, the line card box line card 21 further includes a line card box network interface 212.

In a possible implementation manner, the main frame switching network board assembly 11 includes a plurality of main frame switching network boards, the plurality of main frame switching network boards are in a single-stage switching network structure, and each main frame switching network board includes a main frame external line card interface 111.

In the solution shown in the embodiment of the present application, as shown in fig. 1 and 3 to 8, a plurality of main frame switch network boards are in a single-stage switch network structure, and the levels of the main frame switch network boards are equal. Each main frame switch network board may be provided with a main frame external line card interface 111.

In another possible implementation manner, the main frame switching network board assembly 11 includes a plurality of main frame switching network boards, the plurality of main frame switching network boards are in a multi-stage switching network structure, and a final-stage main frame switching network board in the plurality of main frame switching network boards includes a main frame external line card interface 111.

Wherein, the last stage main frame exchange network board can also be called as a first stage main frame exchange network board.

In the solution shown in the embodiment of the present application, the plurality of main frame switching networks may also be a multi-stage switching network structure, as shown in fig. 2, and may be a two-stage switching network structure. A main frame external line card interface may be provided on each last-stage main frame switching network board.

In a possible implementation manner, the main frame 1 further includes one or more main frame line cards 12, and the one or more main frame line cards 12 are connected with the main frame switching network board assembly 11.

The main frame line card 12 is a line card inside the main frame. The connection between the main frame line card 12 and the main frame switching network board assembly 11 may be through a main frame backplane 13.

In the solution shown in the embodiment of the present application, as shown in fig. 3, the main frame 1 may further include one or more main frame line cards 12, so that the main frame 1 provided in the embodiment of the present application may be used alone as a router, and not only as a switch frame. And, this also makes it possible for the user to purchase the main frame 1 alone without purchasing a kit of line cards 2. When the whole machine capacity of the main frame 1 does not meet the bandwidth requirement, the line card box 2 can be purchased again to expand the whole machine capacity of the main frame 1.

In one possible implementation, the main frame switching network board assembly 11 further includes a main frame external switching interface 112 for connecting with a switching network board.

According to the scheme shown in the embodiment of the application, the existing router is of a wire clamp frame structure and comprises a wire clamp, a back plate and an exchange network plate, wherein the wire clamp and the exchange network plate are connected through the back plate. The existing router is expanded in such a way that an external exchange interface of an exchange network board inside the router is connected with external exchange interfaces of other exchange network boards, thereby completing the expansion of the router. Therefore, in order to be compatible with the extension of the existing router, the main frame switching network board assembly 11 in the main frame 1 provided in the embodiment of the present application may further include a main frame external switching interface 112 for connecting with a switching network board.

Thus, as shown in fig. 4, the main frame external line card interface 111 of the main frame switching network board assembly 11 in the main frame 1 may be connected to the line card box external switching interface 211 of the line card box line card 21 in the line card box 2, and at the same time, the main frame external switching interface 112 may be connected to the switching network board in the line card box 3.

In addition, through the above design, the main frame 1 may also be connected to another main frame 1, that is, the main frame external switch interface 112 of one main frame 1 is connected to the main frame external switch interface 112 of another main frame 1, so as to increase the number of main frame switch network boards in the router and increase the capacity expansion capability of the router.

In a possible implementation manner, the router further includes a line card frame 3, where the line card frame 3 includes one or more line card frame line cards 31 and a line card frame switching network board assembly 32, and the line card frame switching network board assembly 32 includes a line card frame external switching interface 321 for connecting with a switching network board. The main frame 1 and the line card frame 3 are connected through the main frame external exchange interface 112 and the line card frame external exchange interface 321.

Wherein, the wire clamping frame 3 can be consistent with the structure of the wire clamping frame in the prior art.

In the solution shown in this embodiment of the application, the router may further include a line card frame 3, as shown in fig. 4, the line card frame 3 includes one or more line card frame line cards 31, a line card frame switching fabric board assembly 32, and a line card frame backplane 33, and the line card frame line cards 31 and the line card frame switching fabric board assembly 32 may be connected through the line card frame backplane 33. The line card frame switching network board assembly 32 may include one line card frame switching network board, or may include a plurality of line card frame switching network boards. When the card cage switching network board assembly 32 includes a plurality of card cage switching network boards, the plurality of card cage switching network boards may be a single-stage switching network structure or a multi-stage switching network structure.

In a possible implementation manner, the router further includes a crossing device 4, and the crossing device 4 is connected to the main frame external line card interface 111 and the line card box external switching interface 211, respectively.

The crossing device 4 may include a crossing module and a plurality of crossing interfaces, the plurality of crossing interfaces are disposed on the crossing module, and the crossing module is configured to establish a logical direct connection relationship or a physical direct connection relationship between the crossing interfaces. The logical direct connection relationship or the physical direct connection relationship means that, if the logical direct connection relationship is established between the first cross interface and the third cross interface, all data received by the first cross interface can be completely sent to the third cross interface through the cross module, and all data received by the third cross interface can also be completely sent to the first cross interface through the cross module. The crossover differs from the exchange in that the exchange requires parsing of the data and selects an interface based on the destination address contained in the data, whereas the crossover does not require parsing of the data.

The implementation of the CrossBar module may be a CrossBar (CrossBar chip), a configurable optical switch, a passively connected optical cable, a passively connected electrical cable or a CrossBar optical cable, etc. The passive cables, passive optical cables and cross-over optical cables can realize physical direct connection among cross-over interfaces. The CrossBar chip and the configurable optical switch can realize logic direct connection between the cross interfaces.

In the solution shown in the embodiment of the present application, as shown in fig. 5, a part of cross interfaces of the cross apparatus 4 is connected to the main frame external line card interface 111 of the main frame 1, and another part of cross interfaces is connected to the line card box external switching interface 211 of the line card box 2, so as to establish a logical direct connection relationship between the main frame external line card interface 111 and the line card box external switching interface 211.

By setting the crossover device 4, when the data transmission rate of the line card box external exchange interface 211 and the data transmission rate of the main frame external line card interface 111 do not match, the crossover device 4 can complete rate matching. Also, the presence of the crossing means 4 makes the wiring simpler.

In one possible implementation, the interface type of one or both of the main frame external line card interface 111 and the line card box external exchange interface 211 does not match the crossing type of the crossing device 4. The router also comprises a photoelectric conversion device, and two ends of the photoelectric conversion device are respectively connected with the crossing device and one interface or two interfaces.

The interface type comprises an electrical interface and an optical interface, and the cross type comprises an electrical cross and an optical cross. The photoelectric conversion device is used for performing photoelectric conversion on data.

In the solution shown in the embodiment of the present application, when the interface type of one or both of the main frame external line card interface 111 and the line card box external exchange interface 211 is not matched with the cross type of the cross device 4, the router must further have a photoelectric conversion device to perform photoelectric conversion on data, so that the data can be normally transmitted. The number of photoelectric conversion devices coincides with the number of interfaces that do not match the cross type of the cross device 4.

The interface type of one or both of the main frame external line card interface 111 and the line card box external exchange interface 211 may not match the cross type of the crossing device 4, and there are six cases:

first, the main frame is an electrical interface to the external line card interface 111, the line card box is an optical interface to the external switching interface 211, and the crossing device 4 is an optical crossing. In this case, both ends of the photoelectric conversion device are connected to the main frame external line card interface 111 and the crossover device 4, respectively.

In the second type, the main frame is an electrical interface to the external line card interface 111, the line card box is an optical interface to the external switching interface 211, and the crossing device 4 is an electrical crossing. In this case, both ends of the photoelectric conversion device are respectively connected to the line card cassette external exchange interface 211 and the cross device 4.

Third, the main frame is an optical interface for the external line card interface 111, the line card box is an electrical interface for the external exchange interface 211, and the crossing device 4 is an electrical crossing. In this case, both ends of the photoelectric conversion device are connected to the main frame external line card interface 111 and the crossover device 4, respectively.

Fourth, the main frame is an optical interface to the external line card interface 111, the line card box is an electrical interface to the external exchange interface 211, and the crossing device 4 is an optical crossing. In this case, both ends of the photoelectric conversion device are respectively connected to the line card cassette external exchange interface 211 and the cross device 4.

Fifth, the main frame is an electrical interface for the external line card interface 111 and the line card box external exchange interface 211, and the crossing device 4 is an optical crossing. In this case, a photoelectric conversion device is connected between the line card box external exchange interface 211 and the crossover device 4, and a photoelectric conversion device is also connected between the main frame external line card interface 111 and the crossover device 4.

Sixth, the main frame is an optical interface for the external line card interface 111 and the line card box is an optical interface for the external switching interface 211, and the crossing device 4 is an electrical crossing. In this case, a photoelectric conversion device is connected between the line card box external exchange interface 211 and the crossover device 4, and a photoelectric conversion device is also connected between the main frame external line card interface 111 and the crossover device 4.

The photoelectric conversion device may be independent from the crossing device or integrated in the crossing device, which is not limited in the present application.

In one possible implementation, the crossing device 4 is independent of the main frame 1 and the line card box 2.

In the solution shown in the embodiment of the present application, as shown in fig. 6, the crossing device 4 is a device independent of the main frame 1 and the line card box 2. In this way, a plurality of line card boxes 2 can share one crossing device 4, and when any one of the main frame 1, the line card boxes 2 and the crossing device 4 is damaged, only the damaged part can be replaced, thereby saving the cost.

In another possible implementation, the crossing means 4 are fixed in the line cassette 2.

In the solution shown in the embodiment of the present application, as shown in fig. 7 and 8, the crossing unit 4 may also be fixed in the line card box 2. Specifically, the crossing device 4 has at least the following two fixing modes:

first, as shown in fig. 7, the line card box 2 further includes a line card box backplane 22, and the crossover device 4 and the line card box line cards 21 may be integrated on the line card box backplane 22. In this case, the line card box-to-external switching interface 211 of the line card box line card 21 may be provided on the backplane side, and the connection with the crossing device 4 is made through the line card box backplane 22. In this manner, when the crossing unit 4 is damaged, the damaged crossing unit 4 may be replaced and reinserted into the cartridge backplane 22.

Second, as shown in fig. 8, the crossing unit 4 may be directly fixed to the line card box 21, and may be directly fabricated as one structure with the line card box.

In another possible implementation, the crossing means 4 are fixed in the main frame 1.

According to the scheme shown in the embodiment of the application, the crossing device can also be fixed in the main frame 1. In this way, a plurality of line cassettes 2 can share one crossing device 4.

An embodiment of the present application further provides an apparatus installation method, including: connecting the main frame 1 with the line card through the main frame external line card interface 111; the main frame 1 and one or more line card boxes 2 are connected through the main frame-to-external line card interface 111 and the line card box-to-external switching interface 211.

In some embodiments, the main-frame external line card interface 111 is located in the main-frame switching network board assembly 11, the main-frame switching network board assembly 11 includes a plurality of main-frame switching network boards, the plurality of main-frame switching network boards are in a single-stage switching network structure, and each main-frame switching network board includes the main-frame external line card interface 111 thereon.

In some embodiments, the main-frame external line card interface 111 is located in the main-frame switching network board assembly 11, the main-frame switching network board assembly 11 includes a plurality of main-frame switching network boards, the plurality of main-frame switching network boards are in a multi-stage switching network structure, and a last main-frame switching network board of the plurality of main-frame switching network boards includes the main-frame external line card interface 111 thereon

In some embodiments, the main frame 1 further includes one or more main frame line cards 12, and the one or more main frame line cards 12 are connected with the main frame switching fabric board assembly 11.

In some embodiments, the main frame switched network board assembly 11 further includes a main frame external switch interface 211 for connecting with a switch network board.

In some embodiments, the main frame 1 and the line card frame 3 are connected through the main frame-to-external switch interface 211 and the line card frame-to-external switch interface 321.

In some embodiments, the main frame external line card interface 111 and the line card box external switching interface 211 are connected by a cross device.

In some embodiments, an interface type of one or both of the main frame external line card interface 111 and the line card box external exchange interface 211 does not match with a cross type of the crossing apparatus 4, where the interface type includes an electrical interface and an optical interface, and the cross type includes an electrical cross and an optical cross;

a photoelectric conversion device is arranged between the crossing device 4 and each of the one or two interfaces.

In some embodiments, the crossing device 4 is independent of the main frame 1 and the thread cassette 2, or the crossing device 4 is fixed in the main frame 1.

In some embodiments, the crossing means 4 is a cross-bar switch matrix or a configurable optical switch or a passive optical cable or a passive electrical cable or a cross-bar cable or a wavelength division device.

In some embodiments, the line card box to external switch interface 211 is a switch and network multiplexing type interface.

In some embodiments, the method is applied in a routing device or a switching device or a data center.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (25)

1. A connecting structure, characterized by comprising a main frame (1) and one or more line card boxes (2), wherein,

the main frame (1) comprises a main frame switching network board assembly (11), and the main frame switching network board assembly (11) comprises a main frame external line card interface (111) used for being connected with a line card;

each line card box (2) comprises one or more line card box line cards (21), and the one or more line card box line cards (21) comprise line card box-to-outside exchange interfaces (211) used for being connected with the exchange network board;

the main frame (1) and the one or more line card boxes (2) are connected with an external line card interface (111) and an external line card box-to-external exchange interface (211) through the main frame.

2. The connection structure according to claim 1, wherein the main frame switching network board assembly (11) comprises a plurality of main frame switching network boards, the plurality of main frame switching network boards are a single-stage switching network structure, and each main frame switching network board comprises the main frame external line card interface (111).

3. The connection structure according to claim 1, wherein the main frame switch network board assembly (11) comprises a plurality of main frame switch network boards, the plurality of main frame switch network boards are a multi-stage switch network structure, and a last main frame switch network board in the plurality of main frame switch network boards comprises the main frame external line card interface (111).

4. The connection structure according to any of claims 1-3, wherein the main frame (1) further comprises one or more main frame line cards (12), the one or more main frame line cards (12) being connected with the main frame switched network board assembly (11).

5. A connection structure according to any of claims 1-4, characterized in that said main frame switched network board assembly (11) further comprises a main frame to external switch interface (112) for connection with a switch network board.

6. The connection structure according to claim 5, further comprising a line card frame (3), wherein the line card frame (3) comprises a line card frame switching network board assembly (32) and one or more line card frame line cards (31), the one or more line card frame line cards (31) are connected with the line card frame switching network board assembly (32), and the line card frame switching network board assembly (32) comprises a line card frame external switching interface (321) for connecting with a switching network board;

the main frame (1) is connected with the line card frame (3) through the main frame external exchange interface (112) and the line card frame external exchange interface (321).

7. The connection structure according to any of claims 1 to 6, further comprising a crossing device (4), wherein the crossing device (4) is connected to the main frame external line card interface (111) and the line card box external switching interface (211), respectively.

8. The connection structure according to claim 7, characterized in that the crossing means (4) is adapted to match the data transmission rate of the main frame to the external line card interface (111) and the line card box to the external switching interface (211).

9. The connection structure according to any of claims 7-8, wherein the interface type of one or both of the main frame external line card interface (111) and the line card box external switching interface (211) does not match the crossover type of the crossover device (4), wherein the interface type includes an electrical interface and an optical interface, and the crossover type includes an electrical crossover and an optical crossover;

the connecting structure further comprises a photoelectric conversion device, and two ends of the photoelectric conversion device are respectively connected with the crossing device (4) and one interface of the one or two interfaces.

10. The connection structure according to any one of claims 7 to 9,

the crossing means (4) being independent of the main frame (1) and the thread cassette (2), or

The crossing device (4) is fixed in the thread cartridge (2) or

The crossing device (4) is fixed in the main frame (1).

11. The connection arrangement according to any of claims 7-10, characterized in that the crossing means (4) is a cross-bar switch matrix or a configurable optical switch or a passive optical cable or a passive electrical cable or a cross-bar optical cable or a wavelength division device.

12. The connection structure according to any of claims 1-11, characterized in that said line card shelf is a switch and network multiplex type interface to external switch interfaces (211).

13. A connection arrangement according to any of claims 1-12, characterized in that the connection arrangement is located in a routing device or a switching device or a data center.

14. An apparatus installation method, comprising:

connecting the main frame (1) with the line card through the main frame to an external line card interface (111);

and connecting the main frame (1) and one or more line card boxes (2) through the main frame external line card interface (111) and the line card box external exchange interface (211).

15. The method according to claim 14, wherein the main frame outbound line card interface (111) is located in a main frame switched network board assembly (11), the main frame switched network board assembly (11) comprises a plurality of main frame switched network boards, the plurality of main frame switched network boards are a single-stage switched network structure, and each main frame switched network board comprises the main frame outbound line card interface (111).

16. The method according to claim 14, wherein the main frame to external line card interface (111) is located in a main frame switched network board assembly (11), the main frame switched network board assembly (11) comprises a plurality of main frame switched network boards, the plurality of main frame switched network boards are a multi-stage switched network structure, and a last main frame switched network board of the plurality of main frame switched network boards comprises the main frame to external line card interface (111).

17. The method according to any of claims 14-16, wherein the main frame (1) further comprises one or more main frame line cards (12), the one or more main frame line cards (12) being connected with the main frame switched fabric board assembly (11).

18. A method according to any of claims 14-17, wherein the main frame switched network board assembly (11) further comprises a main frame to external switch interface (112) for connection with a switched network board.

19. The method according to any of claims 14-18, wherein the main frame (1) and the line card frame (3) are connected via the main frame-to-external switch interface (112) and the line card frame-to-external switch interface (321).

20. The method according to any of claims 14-19, wherein said main frame is connected to said line card interface (111) and said line card box to said external switching interface (211) via a cross-over arrangement.

21. The method according to claim 20, wherein the interface type of one or both of the main frame external line card interface (111) and the line card box external switching interface (211) does not match the cross-over type of the cross-over device (4), wherein the interface type includes an electrical interface and an optical interface, and the cross-over type includes an electrical cross-over and an optical cross-over;

a photoelectric conversion device is arranged between the crossing device (4) and each of the one or two interfaces.

22. The method of claim 20 or 21,

the crossing means (4) being independent of the main frame (1) and the thread cassette (2), or

The crossing device (4) is fixed in the thread cartridge (2) or

The crossing device (4) is fixed in the main frame (1).

23. Method according to any of claims 20-22, characterized in that the crossing means (4) is a cross-bar switch matrix or a configurable optical switch or a passive optical cable or a passive electrical cable or a cross-bar optical cable or a wavelength division device.

24. The method according to any of claims 14-23, wherein said linecard shelf is a switch and network multiplex type interface to external switch interfaces (211).

25. A method according to any of claims 14-24, characterized in that the method is applied in a routing device or a switching device or a data center.

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