CN105227452B - data frame forwarding method and device - Google Patents

Abstract

Embodiments of the present invention provide a data frame forwarding method and device. The method includes: the receiving port of the first leaf node switch adds a header in the received data frame to obtain the data frame to be forwarded; sends the data frame to be forwarded to the root node switch connected to the first leaf node switch, so that The root node switch sends the data frame to be forwarded to the second leaf node switch according to the destination MAC address. In the embodiment of the present invention, all the data frames received by the receiving port of the first leaf node switch are forwarded to the output port of the second leaf node switch, without the need to dynamically learn the MAC address to establish a MAC address table, when the data frame received by the switch In the case of a sharp increase, the capacity of the MAC address table is avoided; in addition, by adding a packet header including the destination MAC address in the data frame, it is ensured that the data frame can be successfully forwarded even if it is a non-Ethernet packet.

Description

Data frame forwarding method and device

technical field

Embodiments of the present invention relate to the field of communication technologies, and in particular, to a data frame forwarding method and device.

Background technique

In the field of communication technology, the Ethernet switch is an important device for forwarding data frames. The Ethernet switch queries the MAC address table according to the destination MAC address of the received data frame to obtain the output port number corresponding to the destination MAC address, so that the data frame Forwarding to the outgoing port, if there is no entry corresponding to the destination MAC address in the MAC address table, the Ethernet switch establishes an entry including the destination MAC address in the MAC address table by dynamically learning the MAC address.

Since the number of correspondence between the destination MAC address and the outgoing port number in the MAC address table will increase with the increase of the number of data frames, if the number of data frames received by the Ethernet switch increases sharply, the capacity of the MAC address table will be insufficient. , so that the Ethernet switch cannot successfully forward all received data frames; in addition, if the data frame received by the Ethernet switch is a non-Ethernet packet, because the non-Ethernet packet has no source MAC address or destination MAC address, resulting in Ethernet switches will not be able to forward non-Ethernet packets.

Contents of the invention

Embodiments of the present invention provide a data frame forwarding method and device, so as to avoid insufficient capacity of a MAC address table and simultaneously be able to forward non-Ethernet messages.

An aspect of the embodiments of the present invention is to provide a data frame forwarding method, including:

The receiving port of the first leaf node switch adds a packet header to the received data frame to obtain the data frame to be forwarded, and the packet header includes a destination MAC address, and the destination MAC address is related to the first leaf node switch. Receive the MAC address of the outgoing port of the second leaf node switch uniquely corresponding to the receiving port;

The first leaf node switch sends the data frame to be forwarded to a root node switch connected to the first leaf node switch, so that the root node switch forwards the data frame to be forwarded according to the destination MAC address sent to the second leaf node switch.

Another aspect of the embodiments of the present invention is to provide a data frame forwarding method, including:

The root node switch receives the data frame to be forwarded sent by the first leaf node switch connected to it, and the data frame to be forwarded is obtained after the receiving port of the first leaf node switch adds a packet header to the received data frame In a data frame, the message header includes a destination MAC address, and the destination MAC address is the MAC address of the outgoing port of the second leaf node switch uniquely corresponding to the receiving port of the first leaf node switch;

The root node switch sends the data frame to be forwarded to the second leaf node switch according to the destination MAC address, so that the second leaf node switch sends the data frame to be forwarded according to the destination MAC address sent to the outgoing port.

Another aspect of the embodiments of the present invention is to provide a leaf node switch, including:

A message header adding module, configured to add a message header to the data frame received by the receiving port to obtain a data frame to be forwarded, the message header includes a destination MAC address, and the destination MAC address is related to the leaf node switch The MAC address of the egress port of another leaf node switch that only corresponds to the receiving port;

A sending module, configured to send the data frame to be forwarded to a root node switch connected to the leaf node switch, so that the root node switch sends the data frame to be forwarded to the Another leaf node switch.

Another aspect of the embodiments of the present invention is to provide a root node switch, including:

The receiving module is configured to receive the data frame to be forwarded sent by the first leaf node switch connected to it, the data frame to be forwarded is after the receiving port of the first leaf node switch adds a message header to the received data frame In the obtained data frame, the message header includes a destination MAC address, and the destination MAC address is the MAC address of the outgoing port of the second leaf node switch uniquely corresponding to the receiving port of the first leaf node switch;

A sending module, configured to send the data frame to be forwarded to the second leaf node switch according to the destination MAC address, so that the second leaf node switch sends the data frame to be forwarded according to the destination MAC address sent to the outgoing port.

Another aspect of the embodiments of the present invention is to provide a data frame forwarding system, including the leaf node switch, the root node switch, and the other leaf node switch.

In the data frame forwarding method and device provided by the embodiments of the present invention, the receiving port of the first leaf node switch receives the All the data frames are forwarded to the egress port of the second leaf node switch. There is no need to dynamically learn the MAC address to establish the MAC address table. When the data frames received by the switch increase sharply, the capacity of the MAC address table is avoided; A message header including a destination MAC address is added to the frame, and the destination MAC address is the MAC address of the outgoing port of the second leaf node switch, so that the receiving port of the first leaf node switch forwards the data frame to the second leaf node switch according to the destination MAC address. The egress port of the leaf node switch ensures that the data frame can be successfully forwarded even if it is a non-Ethernet packet.

Description of drawings

FIG. 1 is a flow chart of a data frame forwarding method provided by an embodiment of the present invention;

FIG. 2 is a network architecture diagram applicable to the data frame forwarding method provided by the embodiment of the present invention;

FIG. 3 is a flowchart of a data frame forwarding method provided by another embodiment of the present invention;

FIG. 4 is a structural diagram of a leaf node switch provided by an embodiment of the present invention;

FIG. 5 is a structural diagram of a root node switch provided by an embodiment of the present invention;

FIG. 6 is a structural diagram of a data frame forwarding system provided by an embodiment of the present invention.

Detailed ways

FIG. 1 is a flowchart of a data frame forwarding method provided by an embodiment of the present invention; FIG. 2 is a network architecture diagram applicable to the data frame forwarding method provided by an embodiment of the present invention. In the embodiment of the present invention, when the data frames received by the Ethernet switch increase sharply, the capacity of the MAC address table is insufficient, and when the data frame received by the Ethernet switch is a non-Ether message, the Ethernet switch will not be able to forward the non-Ether message. A data frame forwarding method is provided, and the specific steps of the method are as follows:

Step S101, the receiving port of the first leaf node switch adds a message header to the received data frame to obtain the data frame to be forwarded, the message header includes a destination MAC address, and the destination MAC address is the same as that of the first leaf node The MAC address of the outgoing port of the second leaf node switch uniquely corresponding to the receiving port of the node switch;

As shown in Figure 2, the network architecture applicable to the embodiment of the present invention includes an optical path configurator 21, a root node switch 22, a leaf node switch A 23, a leaf node switch B 24, a leaf node switch C 25, and a leaf node switch D26, wherein , each leaf node switch includes three ports respectively port 1, port 2, and port 3. The embodiment of the present invention does not limit the number of leaf node switches, the number of ports of each leaf node switch, and the number of ports of the root node switch. number.

In this embodiment of the present invention, the first leaf node switch and the second leaf node switch are specifically any two different switches among leaf node switch A 23, leaf node switch B 24, leaf node switch C 25, and leaf node switch D 26. , and different ports of each leaf node switch correspond to different MAC addresses, and the MAC addresses corresponding to the same port numbers of any two leaf node switches are also different. The optical path configurator 21 pre-stores a port correspondence table, and the port correspondence table includes a plurality of entries, and each entry includes a receiving port of the first leaf node switch, a MAC address corresponding to the receiving port, and a corresponding MAC address of the first leaf node switch. The receiving port of the switch uniquely corresponds to the outgoing port of the second leaf node switch, and the MAC address corresponding to the outgoing port. The optical path configuration device 21 configures the entry to the first leaf node switch. The node switch 22 is configured with a forwarding table, and each entry in the forwarding table includes: the egress port of the second leaf node switch, the MAC address corresponding to the egress port, and the connection port between the root node switch 22 and the second leaf node switch.

Since the entry configured by the optical path configurator 21 to the first leaf node switch includes the receiving port of the first leaf node switch, the MAC address corresponding to the receiving port, and the second leaf node uniquely corresponding to the receiving port of the first leaf node switch The outgoing port of the node switch and the MAC address corresponding to the outgoing port. For example, the first leaf node switch is leaf node switch A, the second leaf node switch is leaf node switch D, and the receiving port of leaf node switch A is port 1. The outgoing port of switch D is port 3, and when port 1 of leaf node switch A receives a data frame, port 1 of leaf node switch A adds a message header to the head of the data frame to obtain the data frame to be forwarded. The packet header includes a destination MAC address, and the destination MAC address is the MAC address of port 3 of the leaf node switch D.

Step S102, the first leaf node switch sends the to-be-forwarded data frame to a root node switch connected to the first leaf node switch, so that the root node switch forwards the to-be-forwarded data frame according to the destination MAC address The forwarding data frame is sent to the second leaf node switch.

After the port 1 of the leaf node switch A adds a message header to the head of the data frame, the leaf node switch A sends the data frame to be forwarded to the root node switch 22 connected to the leaf node switch A, and the leaf node switch A forwards The port of the data frame to be forwarded is specifically the connection port MA between the leaf node switch A and the root node switch 22, and the root node switch 22 queries the forwarding table according to the forwarding table configured by the optical path configurator 21 to the root node switch 22. The data frame to be forwarded whose destination MAC address is the MAC address of port 3 of the leaf node switch D needs to be sent out from the connection port MD of the root node switch 22 and the leaf node switch D, that is, sent to the leaf node switch D. In addition, the destination MAC address The data frame to be forwarded with the MAC address of port 2 or port 1 of the leaf node switch D also needs to be sent out from the connection port MD between the root node switch 22 and the leaf node switch D, that is, to the leaf node switch D. After the leaf node switch D receives the data frame to be forwarded, it determines that the port corresponding to the destination MAC address is the MAC address of port 3 according to the MAC address corresponding to each port of itself, then sends the data frame to be forwarded to port 3, and the leaf node Port 3 of node switch D removes the packet header added by port 1 of leaf node switch A in the data frame to be forwarded to obtain a data frame, and forwards the data frame through port 3.

In the embodiment of the present invention, by presetting the unique correspondence between the receiving port of the first leaf node switch and the outgoing port of the second leaf node switch, all data frames received by the receiving port of the first leaf node switch are forwarded to the second leaf node. The outgoing port of the node switch does not need to dynamically learn the MAC address to establish the MAC address table. When the data frames received by the switch increase sharply, the capacity of the MAC address table is avoided; header, the destination MAC address is the MAC address of the outgoing port of the second leaf node switch, so that the receiving port of the first leaf node switch forwards the data frame to the outgoing port of the second leaf node switch according to the destination MAC address, ensuring Even if the data frame is a non-Ethernet message, it can be successfully forwarded.

On the basis of the foregoing embodiments, the packet header further includes a source MAC address, and the source MAC address is a MAC address corresponding to a receiving port of the first leaf node switch.

When port 1 of leaf node switch A receives a data frame, port 1 of leaf node switch A adds a header to the header of the data frame to obtain the data frame to be forwarded. The header includes the destination MAC address and source MAC address, the destination MAC address is the MAC address of port 3 of the leaf node switch D, and the source MAC address is the MAC address of port 1 of the leaf node switch A.

Fig. 3 is a flowchart of a data frame forwarding method provided by another embodiment of the present invention. In the embodiment of the present invention, when the data frames received by the Ethernet switch increase sharply, the capacity of the MAC address table is insufficient, and when the data frame received by the Ethernet switch is a non-Ether message, the Ethernet switch will not be able to forward the non-Ether message. A data frame forwarding method is provided, and the specific steps of the method are as follows:

Step S301, the root node switch receives the data frame to be forwarded sent by the first leaf node switch connected to it, and the data frame to be forwarded is that the receiving port of the first leaf node switch adds a message header to the received data frame In the data frame obtained afterward, the message header includes a destination MAC address, and the destination MAC address is the MAC address of the outgoing port of the second leaf node switch uniquely corresponding to the receiving port of the first leaf node switch;

As shown in Figure 2, the network architecture applicable to the embodiment of the present invention includes an optical path configurator 21, a root node switch 22, a leaf node switch A 23, a leaf node switch B 24, a leaf node switch C 25, and a leaf node switch D26, wherein , each leaf node switch includes three ports respectively port 1, port 2, and port 3. The embodiment of the present invention does not limit the number of leaf node switches, the number of ports of each leaf node switch, and the number of ports of the root node switch. number.

In this embodiment of the present invention, the first leaf node switch and the second leaf node switch are specifically any two different switches among leaf node switch A 23, leaf node switch B 24, leaf node switch C 25, and leaf node switch D 26. , and different ports of each leaf node switch correspond to different MAC addresses, and the MAC addresses corresponding to the same port numbers of any two leaf node switches are also different. The optical path configurator 21 pre-stores a port correspondence table, and the port correspondence table includes a plurality of entries, and each entry includes a receiving port of the first leaf node switch, a MAC address corresponding to the receiving port, and a corresponding MAC address of the first leaf node switch. The receiving port of the switch uniquely corresponds to the outgoing port of the second leaf node switch, and the MAC address corresponding to the outgoing port. The optical path configuration device 21 configures the entry to the first leaf node switch. The node switch 22 is configured with a forwarding table, and each entry in the forwarding table includes: the egress port of the second leaf node switch, the MAC address corresponding to the egress port, and the connection port between the root node switch 22 and the second leaf node switch.

Since the entry configured by the optical path configurator 21 to the first leaf node switch includes the receiving port of the first leaf node switch, the MAC address corresponding to the receiving port, and the second leaf node uniquely corresponding to the receiving port of the first leaf node switch The outgoing port of the node switch and the MAC address corresponding to the outgoing port. For example, the first leaf node switch is leaf node switch A, the second leaf node switch is leaf node switch D, and the receiving port of leaf node switch A is port 1. The outgoing port of switch D is port 3, and when port 1 of leaf node switch A receives a data frame, port 1 of leaf node switch A adds a message header to the head of the data frame to obtain the data frame to be forwarded. The packet header includes a destination MAC address, and the destination MAC address is the MAC address of port 3 of the leaf node switch D.

Step S302, the root node switch sends the data frame to be forwarded to the second leaf node switch according to the destination MAC address, so that the second leaf node switch sends the data frame to be forwarded according to the destination MAC address The forwarded data frame is sent to the egress port.

After the port 1 of the leaf node switch A adds a message header to the head of the data frame, the leaf node switch A sends the data frame to be forwarded to the root node switch 22 connected to the leaf node switch A, and the leaf node switch A forwards The port of the data frame to be forwarded is specifically the connection port MA between the leaf node switch A and the root node switch 22, and the root node switch 22 queries the forwarding table according to the forwarding table configured by the optical path configurator 21 to the root node switch 22. The data frame to be forwarded whose destination MAC address is the MAC address of port 3 of the leaf node switch D needs to be sent out from the connection port MD of the root node switch 22 and the leaf node switch D, that is, sent to the leaf node switch D. In addition, the destination MAC address The data frame to be forwarded with the MAC address of port 2 or port 1 of the leaf node switch D also needs to be sent out from the connection port MD between the root node switch 22 and the leaf node switch D, that is, to the leaf node switch D. After the leaf node switch D receives the data frame to be forwarded, it determines that the port corresponding to the destination MAC address is the MAC address of port 3 according to the MAC address corresponding to each port of itself, then sends the data frame to be forwarded to port 3, and the leaf node Port 3 of node switch D removes the packet header added by port 1 of leaf node switch A in the data frame to be forwarded to obtain a data frame, and forwards the data frame through port 3.

In the embodiment of the present invention, by presetting the unique correspondence between the receiving port of the first leaf node switch and the outgoing port of the second leaf node switch, all data frames received by the receiving port of the first leaf node switch are forwarded to the second leaf node. The outgoing port of the node switch does not need to dynamically learn the MAC address to establish the MAC address table. When the data frames received by the switch increase sharply, the capacity of the MAC address table is avoided; header, the destination MAC address is the MAC address of the outgoing port of the second leaf node switch, so that the receiving port of the first leaf node switch forwards the data frame to the outgoing port of the second leaf node switch according to the destination MAC address, ensuring Even if the data frame is a non-Ethernet message, it can be successfully forwarded.

On the basis of the above embodiments, the root node switch pre-stores a forwarding table, the forwarding table includes a plurality of entries, each entry includes a correspondence between a MAC address and a forwarding port, and the MAC address is related to the The MAC address corresponding to any port of the leaf node switch connected to the root node switch, the forwarding port is a connection port between the root node switch and the leaf node switch corresponding to the MAC address.

In the embodiment of the present invention, the forwarding table pre-stored in the root node switch is the forwarding table configured by the optical path configurator 21 to the root node switch 22 in the above embodiment.

The root node switch sending the data frame to be forwarded to the second leaf node switch according to the destination MAC address includes: the root node switch passing the data frame to be forwarded through the The connection port between the root node switch and the second leaf node switch is sent to the second leaf node switch.

The root node switch 22 configures the forwarding table to the root node switch 22 according to the optical path configurator 21. From the forwarding table, query and learn that the data frame to be forwarded whose destination MAC address is the MAC address of port 3 of the leaf node switch D needs to be forwarded from the root node. The connection port MD between the switch 22 and the leaf node switch D sends out.

In the embodiment of the present invention, by presetting the unique correspondence between the receiving port of the first leaf node switch and the outgoing port of the second leaf node switch, all data frames received by the receiving port of the first leaf node switch are forwarded to the second leaf node. The outgoing port of the node switch does not need to dynamically learn the MAC address to establish the MAC address table. When the data frames received by the switch increase sharply, the capacity of the MAC address table is avoided; header, the destination MAC address is the MAC address of the outgoing port of the second leaf node switch, so that the receiving port of the first leaf node switch forwards the data frame to the outgoing port of the second leaf node switch according to the destination MAC address, ensuring Even if the data frame is a non-Ethernet message, it can be successfully forwarded.

FIG. 4 is a structural diagram of a leaf node switch provided by an embodiment of the present invention. The leaf node switch provided by the embodiment of the present invention can execute the processing flow provided by the embodiment of the data frame forwarding method. As shown in FIG. Module 41 is used to add a message header to the data frame received by the receiving port to obtain the data frame to be forwarded, the message header includes a destination MAC address, and the destination MAC address is uniquely corresponding to the receiving port of the leaf node switch The MAC address of the outgoing port of another leaf node switch; the sending module 42 is used to send the data frame to be forwarded to the root node switch connected to the leaf node switch, so that the root node switch according to the purpose The MAC address sends the to-be-forwarded data frame to the other leaf node switch.

In the embodiment of the present invention, by presetting the unique correspondence between the receiving port of the leaf node switch and the outgoing port of another leaf node switch, all the data frames received by the receiving port of the leaf node switch are forwarded to the outgoing port of another leaf node switch. Ports do not need to dynamically learn the MAC address to establish a MAC address table. When the data frames received by the switch increase sharply, the capacity of the MAC address table is avoided. In addition, by adding a packet header including the destination MAC address in the data frame, the The destination MAC address is the MAC address of the egress port of another leaf node switch, so that the receiving port of the leaf node switch forwards the data frame to the egress port of another leaf node switch according to the destination MAC address, ensuring that the data frame even if it is a non-Ethernet The message can also be successfully forwarded.

FIG. 5 is a structural diagram of a root node switch provided by an embodiment of the present invention. The root node switch provided by the embodiment of the present invention can execute the processing flow provided by the embodiment of the data frame forwarding method. As shown in FIG. The to-be-forwarded data frame sent by the connected first leaf node switch, the to-be-forwarded data frame is a data frame obtained by adding a header to the received data frame at the receiving port of the first leaf node switch, and the The packet header includes a destination MAC address, and the destination MAC address is the MAC address of the outgoing port of the second leaf node switch uniquely corresponding to the receiving port of the first leaf node switch; the sending module 52 is configured to The address sends the data frame to be forwarded to the second leaf node switch, so that the second leaf node switch sends the data frame to be forwarded to the egress port according to the destination MAC address.

In the embodiment of the present invention, by presetting the unique correspondence between the receiving port of the first leaf node switch and the outgoing port of the second leaf node switch, all data frames received by the receiving port of the first leaf node switch are forwarded to the second leaf node. The outgoing port of the node switch does not need to dynamically learn the MAC address to establish the MAC address table. When the data frames received by the switch increase sharply, the capacity of the MAC address table is avoided; header, the destination MAC address is the MAC address of the outgoing port of the second leaf node switch, so that the receiving port of the first leaf node switch forwards the data frame to the outgoing port of the second leaf node switch according to the destination MAC address, ensuring Even if the data frame is a non-Ethernet message, it can be successfully forwarded.

On the basis of the above-mentioned embodiments, the root node switch 50 pre-stores a forwarding table, the forwarding table includes a plurality of entries, and each entry includes a correspondence between a MAC address and a forwarding port, and the MAC address is related to the The MAC address corresponding to any port of the leaf node switch connected to the root node switch, and the forwarding port is a connection port between the root node switch and the leaf node switch corresponding to the MAC address.

The sending module 52 is specifically configured to send the data frame to be forwarded to the second leaf node switch through a connection port between the root node switch and the second leaf node switch according to the destination MAC address.

The root node switch provided in the embodiment of the present invention can be specifically used to execute the method embodiment provided in FIG. 3 above, and the specific functions will not be repeated here.

In the embodiment of the present invention, by presetting the unique correspondence between the receiving port of the first leaf node switch and the outgoing port of the second leaf node switch, all data frames received by the receiving port of the first leaf node switch are forwarded to the second leaf node. The outgoing port of the node switch does not need to dynamically learn the MAC address to establish the MAC address table. When the data frames received by the switch increase sharply, the capacity of the MAC address table is avoided; header, the destination MAC address is the MAC address of the outgoing port of the second leaf node switch, so that the receiving port of the first leaf node switch forwards the data frame to the outgoing port of the second leaf node switch according to the destination MAC address, ensuring Even if the data frame is a non-Ethernet message, it can be successfully forwarded.

FIG. 6 is a structural diagram of a data frame forwarding system provided by an embodiment of the present invention. The data frame forwarding system provided by the embodiment of the present invention can execute the processing flow provided by the embodiment of the data frame forwarding method. As shown in FIG. 6, the data frame forwarding system 60 includes the leaf node switch 40 in the above embodiment, the The root node switch 50 and another leaf node switch 61 in the above embodiment.

The data frame forwarding system provided in the embodiment of the present invention can execute the processing flow provided in the data frame forwarding method embodiment.

To sum up, in this embodiment of the present invention, by presetting the unique correspondence between the receiving port of the first leaf node switch and the outgoing port of the second leaf node switch, all data frames received by the receiving port of the first leaf node switch are Forwarding to the outgoing port of the second leaf node switch does not need to establish a MAC address table by dynamically learning the MAC address. When the data frames received by the switch increase sharply, the MAC address table capacity is avoided; in addition, by adding The message header of the destination MAC address, the destination MAC address is the MAC address of the outgoing port of the second leaf node switch, so that the receiving port of the first leaf node switch forwards the data frame to the second leaf node switch according to the destination MAC address The outgoing port ensures that the data frame can be successfully forwarded even if it is a non-Ethernet packet.

In the several embodiments provided by the present invention, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit. The above-mentioned integrated units can be implemented in the form of hardware, or in the form of hardware plus software functional units.

The above-mentioned integrated units implemented in the form of software functional units may be stored in a computer-readable storage medium. The above-mentioned software functional units are stored in a storage medium, and include several instructions to make a computer device (which may be a personal computer, server, or network device, etc.) or a processor (processor) execute the methods described in various embodiments of the present invention. partial steps. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other various media that can store program codes. .

Those skilled in the art can clearly understand that for the convenience and brevity of description, only the division of the above-mentioned functional modules is used as an example for illustration. The internal structure of the system is divided into different functional modules to complete all or part of the functions described above. For the specific working process of the device described above, reference may be made to the corresponding process in the foregoing method embodiments, and details are not repeated here.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the various embodiments of the present invention. scope.

Claims (10)

1. A data frame forwarding method, characterized in that, comprising: The receiving port of the first leaf node switch adds a packet header to the received data frame to obtain the data frame to be forwarded, and the packet header includes a destination MAC address, and the destination MAC address is related to the first leaf node switch. Receive the MAC address of the outgoing port of the second leaf node switch uniquely corresponding to the receiving port; The first leaf node switch sends the to-be-forwarded data frame to a root node switch connected to the first leaf node switch, so that the root node switch transmits the data frame from the optical path configuration device to the Query the corresponding forwarding port in the forwarding table configured by the root node switch, and send the data frame to be forwarded to the second leaf node switch through the forwarding port, so that the second leaf node switch according to the The destination MAC address sends the to-be-forwarded data frame to the egress port. 2. The method according to claim 1, wherein the packet header further includes a source MAC address, and the source MAC address is a MAC address corresponding to a receiving port of the first leaf node switch. 3. A data frame forwarding method, characterized in that, comprising: The root node switch receives the data frame to be forwarded sent by the first leaf node switch connected to it, and the data frame to be forwarded is obtained after the receiving port of the first leaf node switch adds a packet header to the received data frame In a data frame, the message header includes a destination MAC address, and the destination MAC address is the MAC address of the outgoing port of the second leaf node switch uniquely corresponding to the receiving port of the first leaf node switch; The root node switch queries the corresponding forwarding port from the forwarding table configured by the optical path configurator to the root node switch according to the destination MAC address, and sends the data frame to be forwarded to the The second leaf node switch, so that the second leaf node switch sends the data frame to be forwarded to the egress port according to the destination MAC address. 4. The method according to claim 3, wherein the root node switch is pre-stored with a forwarding table, the forwarding table includes a plurality of entries, and each entry includes a correspondence between a MAC address and a forwarding port, The MAC address is a MAC address corresponding to any port of a leaf node switch connected to the root node switch, and the forwarding port is a connection port of the root node switch to a leaf node switch corresponding to the MAC address. 5. The method according to claim 4, wherein the root node switch sends the data frame to be forwarded to the second leaf node switch according to the destination MAC address, comprising: The root node switch sends the data frame to be forwarded to the second leaf node switch through a connection port between the root node switch and the second leaf node switch according to the destination MAC address. 6. A leaf node switch, characterized in that, comprising: A message header adding module, configured to add a message header to the data frame received by the receiving port to obtain a data frame to be forwarded, the message header includes a destination MAC address, and the destination MAC address is related to the leaf node switch Receive the MAC address of the egress port of another leaf node switch uniquely corresponding to the receiving port; A sending module, configured to send the to-be-forwarded data frame to a root node switch connected to the leaf node switch, so that the root node switch transmits from the optical path configuration device to the root node switch according to the destination MAC address Query the corresponding forwarding port in the configured forwarding table, and send the data frame to be forwarded to the other leaf node switch through the forwarding port, so that the other leaf node switch sends The data frame to be forwarded is sent to the egress port. 7. A root node switch, characterized in that, comprising: The receiving module is configured to receive the data frame to be forwarded sent by the first leaf node switch connected to it, the data frame to be forwarded is after the receiving port of the first leaf node switch adds a message header to the received data frame In the obtained data frame, the message header includes a destination MAC address, and the destination MAC address is the MAC address of the outgoing port of the second leaf node switch uniquely corresponding to the receiving port of the first leaf node switch; A sending module, configured to query the corresponding forwarding port from the forwarding table configured by the optical path configurator to the root node switch according to the destination MAC address, and send the data frame to be forwarded to the forwarding port through the forwarding port The second leaf node switch, so that the second leaf node switch sends the data frame to be forwarded to the egress port according to the destination MAC address. 8. The root node switch according to claim 7, wherein the root node switch is pre-stored with a forwarding table, and the forwarding table includes a plurality of entries, and each entry includes a corresponding MAC address and a forwarding port. relationship, the MAC address is the MAC address corresponding to any port of the leaf node switch connected to the root node switch, and the forwarding port is the connection port of the root node switch and the leaf node switch corresponding to the MAC address . 9. The root node switch according to claim 8, wherein the sending module is specifically configured to pass the data frame to be forwarded through the root node switch and the second leaf node according to the destination MAC address The connection port of the switch is sent to the second leaf node switch. 10. A data frame forwarding system, comprising the leaf node switch according to claim 6, the root node switch according to any one of claims 7-9, and another leaf node switch.