CN107995112B

CN107995112B - TRILL message processing method and device for frame type equipment

Info

Publication number: CN107995112B
Application number: CN201711419047.1A
Authority: CN
Inventors: 张岩
Original assignee: Hangzhou DPTech Technologies Co Ltd
Current assignee: Hangzhou DPTech Technologies Co Ltd
Priority date: 2017-12-25
Filing date: 2017-12-25
Publication date: 2021-02-26
Anticipated expiration: 2037-12-25
Also published as: CN107995112A

Abstract

The application provides a method for processing a TRILL packet of a frame device, which is characterized in that a switch board of the frame device supports processing of the TRILL packet, and the method is applied to any switch board of the frame device, and the method comprises the following steps: under the condition of receiving a TRILL message sent by an interface board, decapsulating the message according to the format of the TRILL message; under the condition of receiving a non-TRILL message sent by an interface board, obtaining forwarding information of the message; searching the packaging information of the message in a preset forwarding table entry according to the forwarding information of the message; determining whether the message needs to be packaged into a TRILL message or not according to the searched packaging information; and under the condition that the message needs to be packaged into the TRILL message, packaging the message according to the format of the TRILL message according to the found packaging information. By applying the scheme, the exchange board is replaced by the exchange board capable of processing the TRILL message, so that the frame type equipment can process the TRILL message with lower cost and higher efficiency.

Description

TRILL message processing method and device for frame type equipment

Technical Field

The present application relates to the field of communications technologies, and in particular, to a TRILL packet processing method and apparatus for a frame device.

Background

TRILL (Transparent Interconnection of Lots of Links, multilink Transparent Interconnection) is a two-layer multipath data forwarding Protocol, and can calculate the shortest path between devices in a network by using a link state routing Protocol, so that equivalent multipath simultaneous forwarding flow between two points is realized, and thus the defects of standard STP (Spanning Tree Protocol) in the aspects of network utilization rate and topology refocusing are overcome, and the method is suitable for the ethernet network with a large-scale mesh topology structure. Frame type network equipment applied to a TRILL network needs to be decapsulated and forwarded after receiving a TRILL message, and can be encapsulated into the TRILL message and forwarded after receiving a common message.

In the prior art, in order to implement support of frame type network equipment for processing a TRILL packet, two schemes are generally adopted. In the first scheme, an interface board which cannot process the TRILL packet in the frame-type device is directly replaced by an interface board which can process the TRILL packet, but because there are many interface boards in the frame-type device, the replacement cost is high. The second scheme is to realize the processing of the TRILL message through software, but because the efficiency of software processing is low, the use requirement cannot be met in practical application.

Disclosure of Invention

In view of this, the present application provides a method and an apparatus for processing a TRILL packet of a frame device, where the technical scheme is as follows:

a TRILL message processing method of a frame device is characterized in that a switch board of the frame device supports processing of a TRILL message, and the method is applied to any switch board of the frame device, and the method includes:

under the condition of receiving a TRILL message sent by an interface board, decapsulating the message according to the format of the TRILL message;

under the condition of receiving a non-TRILL message sent by an interface board, obtaining forwarding information of the message;

searching the packaging information of the message in a preset forwarding table entry according to the forwarding information of the message;

determining whether the message needs to be packaged into a TRILL message or not according to the searched packaging information;

and under the condition that the message needs to be packaged into the TRILL message, packaging the message according to the format of the TRILL message according to the found packaging information.

The device for processing the TRILL packet of the frame device is characterized in that a switch board of the frame device supports processing the TRILL packet, and the device is applied to any switch board of the frame device, and the device includes:

the message decapsulation module is used for decapsulating the TRILL message according to the format of the TRILL message when the TRILL message sent by the interface board is received;

a forwarding information obtaining module, configured to obtain forwarding information of a non-TRILL packet sent by an interface board when the packet is received;

the encapsulation information searching module is used for searching the encapsulation information of the message in a preset forwarding table item according to the forwarding information of the message;

the encapsulation determining module is used for determining whether the message needs to be encapsulated into a TRILL message according to the searched encapsulation information;

and the message packaging module is used for packaging the message according to the format of the TRILL message according to the found packaging information under the condition that the message is determined to be the TRILL message.

According to the technical scheme, for the frame type network equipment which is applied to the TRILL network and the interface board does not support the processing of the TRILL message, the exchange board supporting the processing of the TRILL message is configured, so that the TRILL message is decapsulated and other messages are encapsulated into the TRILL message through the exchange board instead of the interface board, and the cost and the efficiency of the frame type equipment for processing the TRILL message are considered.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application. Moreover, not all of the above-described effects need to be achieved by any of the embodiments in this application.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art according to the drawings.

FIG. 1 is a schematic diagram of an application scenario according to an embodiment of the present application;

FIG. 2 is a schematic diagram of another application scenario of an embodiment of the present application;

fig. 3 is a schematic flow chart of a TRILL packet processing method of a frame device according to the embodiment of the present application;

fig. 4 is a schematic structural diagram of a TRILL packet processing apparatus of a frame device according to the embodiment of the present application;

fig. 5 is another schematic structural diagram of a TRILL packet processing apparatus of a frame device according to the embodiment of the present application.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

A frame device is a network device that can flexibly replace a board and has better extensibility, and has a plurality of slots inside, and two types of boards, i.e., a switch board and an interface board, can be configured, where the interface board of the frame device is connected to the switch board and transmits data through the switch board, as shown in fig. 1, a schematic diagram of connection between the switch board and the interface board in a certain frame device and data transmission is shown. When the frame device needs to be applied to a TRILL network environment, the frame device needs to be capable of processing a TRILL message, that is, when the TRILL message is received, the TRILL message can be decapsulated and forwarded, and when other messages need to be forwarded in the TRILL message, the TRILL message can be encapsulated and forwarded. In general, if the interface board supports the above processing of the TRILL packet, the interface board may process the TRILL packet after receiving the TRILL packet or before sending the TRILL packet. If the interface board itself does not support handling TRILL, the interface board in the frame device may be replaced with an interface board that supports the function, but since the frame device is generally configured with more interface boards to improve forwarding efficiency, the cost of replacing all the interface boards is higher. In order to solve the problem, an embodiment of the present application provides a method for processing a TRILL packet of a frame device, and as shown in fig. 2, in the scheme of the present application, an interface board of the frame device may not be replaced, but a small number of switch boards are replaced with switch boards supporting a TRILL processing function, so that support of the frame device on the TRILL processing function is achieved with lower cost and higher efficiency.

Referring to fig. 3, the method may include the steps of:

s101, under the condition of receiving a TRILL message sent by an interface board, decapsulating the message according to the format of the TRILL message;

in the scheme of the application, after receiving the TRILL message, if the TRILL message cannot be processed, the interface board may directly send the message to the connected switch board through the connection port of the internal interface board of the frame device and the switch board, and the switch board having the function of processing the TRILL message after replacement processes the TRILL message. After receiving the TRILL packet, the switchboard may decapsulate the TRILL packet according to its encapsulation format to obtain the decapsulated packet and forwarding information of the TRILL packet.

In a specific embodiment of the present application, after the switch board decapsulates the TRILL packet, the switch board may search, according to packet forwarding information obtained after decapsulating the TRILL packet, a forwarding interface board obtained after decapsulating the TRILL packet in a preset forwarding table entry, and send the decapsulated packet to the searched forwarding interface board, so that the interface board may directly forward the packet to a destination port. For example, if the message forwarding information includes a destination port address corresponding to the TRILL message, such as an MAC address that can uniquely identify a port, and the preset forwarding table entry records a correspondence between addresses of ports in the TRILL network and an interface board in the local frame device through means of user configuration, automatic learning, and the like, the destination port address in the message forwarding information obtained by decapsulating the TRILL message can be found through the correspondence in the preset forwarding table entry, and the message obtained by decapsulating the TRILL message is forwarded through which interface board in the local frame device. According to the message forwarding information and the specific content of the preset forwarding table entry, other searching modes can be adopted, the basic scheme of the application is not limited in theory, and a person skilled in the art can select a proper mode according to the specific situation in practical application.

S102, under the condition of receiving a non-TRILL message sent by an interface board, obtaining forwarding information of the message;

s103, searching the packaging information of the message in a preset forwarding table entry according to the forwarding information of the message;

s104, determining whether the message needs to be packaged into a TRILL message or not according to the searched packaging information;

and S105, under the condition that the message needs to be packaged into the TRILL message, packaging the message according to the format of the TRILL message according to the found packaging information.

For convenience of description, S102 to 105 are explained in combination.

In the present application, when other packets need to be encapsulated into a TRILL packet and then forwarded by the interface board, the packet may be encapsulated into the TRILL packet by the switch board before being sent to the interface board for forwarding. Therefore, when receiving a non-TRILL packet sent by an interface board, the switch board first needs to obtain forwarding information of the packet, and searches encapsulation information of the packet in a preset forwarding table entry according to the forwarding information, thereby determining whether the packet needs to be encapsulated as a TRILL packet. The specific search process may be implemented in various ways, for example, if the obtained forwarding information of the packet includes a destination address, such as an MAC address and/or a VLAN Tag of a destination port, and a preset forwarding table entry records whether the destination address is in a TRILL network through means such as user configuration and automatic learning, that is, whether the packet sent to the port needs to be encapsulated into a TRILL packet, and for example, further, encapsulation information such as an encapsulation format of the TRILL packet may be searched in other table entries, and the like. And determining that the message needs to be packaged into a TRILL message, and after the packaging information is found, packaging the message according to the found packaging information and the packaging format of the TRILL message.

In a specific embodiment of the present application, after the packet is encapsulated as a TRILL packet, the switch board may further search for the packet encapsulated as a TRILL packet in a preset forwarding table entry through the obtained packet forwarding information, and then forward the packet to an interface board of a destination port, where the specific search process may be implemented in various ways, for example, a similar way to the above may be adopted to obtain a destination address in the forwarding information, and a forwarding table entry including a corresponding relation between the destination address and the interface board finds the forwarding interface board, or other ways may also be adopted to perform the search. After the forwarding interface board is found, the exchange board can send the encapsulated TRILL message to the interface board, so that the interface board forwards the TRILL message.

Corresponding to the foregoing method embodiment, the present application further provides a TRILL packet processing apparatus for a frame device, where a switch board of the frame device supports processing of a TRILL packet, and the apparatus is applied to any switch board of the frame device, as shown in fig. 4, and the apparatus may include:

a message decapsulation module 110, configured to decapsulate, when a TRILL message sent by an interface board is received, the message according to a format of the TRILL message;

a forwarding information obtaining module 120, configured to obtain forwarding information of a non-TRILL packet sent by an interface board when the packet is received;

a package information searching module 130, configured to search, according to the forwarding information of the packet, the package information of the packet in a preset forwarding table entry;

a package determining module 140, configured to determine whether the packet needs to be packaged as a TRILL packet according to the found package information;

and the message encapsulation module 150 is configured to encapsulate the message according to the format of the TRILL message according to the found encapsulation information under the condition that it is determined that the message needs to be encapsulated as the TRILL message.

In one embodiment of the present application, referring to fig. 5, the apparatus may further include:

the first interface board searching module 160 is configured to search, according to the packet forwarding information obtained by decapsulating any TRILL packet, a decapsulated forwarding interface board of the TRILL in a preset forwarding table entry;

the first packet sending module 170 is configured to send the packet obtained by decapsulating the TRILL packet to the found decapsulated forwarding interface board, so that the interface board forwards the packet.

A second interface board searching module 180, configured to search, according to forwarding information of any non-TRILL packet, a forwarding interface board after encapsulation of the packet in a preset forwarding table entry;

the second message sending module 190 is configured to send the TRILL message obtained after the message is encapsulated to the found encapsulated forwarding interface board, so that the interface board forwards the TRILL message.

It can be understood that the first interface board lookup module 160, the first packet sending module 170, the second interface board lookup module 180, and the second packet sending module 190 are two independent modules with independent functions, and may be configured in the apparatus at the same time as shown in fig. 5, or may be separately configured in the apparatus, so the structure shown in fig. 5 should not be construed as a limitation to the present application.

In a specific embodiment of the present application, the first interface board lookup module 160 includes:

a first destination address obtaining unit, configured to obtain a destination address of any decapsulated TRILL packet, where the destination address is included in packet forwarding information obtained by decapsulating the TRILL packet;

and the first interface board searching unit is used for searching the forwarding interface board after the TRILL message is decapsulated in a preset forwarding table entry according to the destination address of the TRILL message, wherein the preset forwarding table entry comprises the corresponding relation between the destination address and the interface board.

In a specific embodiment of the present application, the second interface board lookup module 180 includes:

a second destination address obtaining unit, configured to obtain a destination address included in forwarding information of any non-TRILL packet;

and the second interface board searching unit is used for searching the packaged forwarding interface board of the message in a preset forwarding table entry according to the destination address, wherein the preset forwarding table entry comprises the corresponding relation between the destination address and the interface board.

The implementation process of the functions and actions of each unit in the above device is specifically described in the implementation process of the corresponding step in the above method, and is not described herein again.

For the device embodiments, since they substantially correspond to the method embodiments, reference may be made to the partial description of the method embodiments for relevant points. The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the scheme of the application. One of ordinary skill in the art can understand and implement it without inventive effort.

While this specification contains many specific implementation details, these should not be construed as limitations on the scope of any invention or of what may be claimed, but rather as descriptions of features specific to particular embodiments of particular inventions. Certain features that are described in this specification in the context of separate embodiments can also be implemented in combination in a single embodiment. In other instances, features described in connection with one embodiment may be implemented as discrete components or in any suitable subcombination. Moreover, although features may be described above as acting in certain combinations and even initially claimed as such, one or more features from a claimed combination can in some cases be excised from the combination, and the claimed combination may be directed to a subcombination or variation of a subcombination.

Similarly, while operations are depicted in the drawings in a particular order, this should not be understood as requiring that such operations be performed in the particular order shown or in sequential order, or that all illustrated operations be performed, to achieve desirable results. In some cases, multitasking and parallel processing may be advantageous. Moreover, the separation of various system modules and components in the embodiments described above should not be understood as requiring such separation in all embodiments, and it should be understood that the described program components and systems can generally be integrated together in a single software product or packaged into multiple software products.

Thus, particular embodiments of the subject matter have been described. Other embodiments are within the scope of the following claims. In some cases, the actions recited in the claims can be performed in a different order and still achieve desirable results. Further, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some implementations, multitasking and parallel processing may be advantageous.

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 scope of protection of the present application.

Claims

1. A TRILL message processing method of a frame device is characterized in that a switch board of the frame device supports processing of a TRILL message, and the method is applied to any switch board of the frame device, and the method includes:

under the condition of receiving a TRILL message sent by an interface board, decapsulating the message according to the format of the TRILL message; the TRILL message is forwarded to the switch board after being received by the interface board incapable of processing the TRILL message;

2. The method of claim 1, further comprising:

searching a decapsulated forwarding interface board of the TRILL in a preset forwarding table entry according to message forwarding information obtained by decapsulating any TRILL message;

and sending the message obtained after the TRILL message is decapsulated to the searched decapsulated forwarding interface board so that the interface board forwards the message.

3. The method according to claim 2, wherein the searching for the decapsulated forwarding interface board of the TRILL in a preset forwarding table entry according to the packet forwarding information obtained by decapsulating any TRILL packet comprises:

obtaining a destination address of any decapsulated TRILL message, wherein the destination address is included in message forwarding information obtained by decapsulating the TRILL message;

and searching a forwarding interface board after the TRILL message is decapsulated in a preset forwarding table entry according to the destination address of the TRILL message, wherein the preset forwarding table entry comprises the corresponding relation between the destination address and the interface board.

4. The method of claim 1, further comprising:

searching a packaged forwarding interface board of any non-TRILL message in a preset forwarding table entry according to the forwarding information of the message;

and sending the TRILL message obtained after the message is packaged to the searched packaged forwarding interface board so that the interface board forwards the TRILL message.

5. The method according to claim 4, wherein the searching for the packaged forwarding interface board of any non-TRILL packet in a preset forwarding table entry according to the forwarding information of the packet comprises:

obtaining a destination address included in forwarding information of any non-TRILL message;

and searching an encapsulated forwarding interface board of the message in a preset forwarding table entry according to the destination address, wherein the preset forwarding table entry comprises the corresponding relation between the destination address and the interface board.

6. The device for processing the TRILL packet of the frame device is characterized in that a switch board of the frame device supports processing the TRILL packet, and the device is applied to any switch board of the frame device, and the device includes:

the message decapsulation module is used for decapsulating the TRILL message according to the format of the TRILL message when the TRILL message sent by the interface board is received; the TRILL message is forwarded to the switch board after being received by the interface board incapable of processing the TRILL message;

7. The apparatus of claim 6, further comprising:

the first interface board searching module is used for searching a forwarding interface board after the TRILL is unpacked in a preset forwarding table entry according to the message forwarding information obtained by unpacking any TRILL message;

and the first message sending module is used for sending the message obtained after the TRILL message is decapsulated to the found decapsulated forwarding interface board so that the interface board forwards the message.

8. The apparatus of claim 7, wherein the first interface board lookup module comprises:

9. The apparatus of claim 6, further comprising:

the second interface board searching module is used for searching the packaged forwarding interface board of the message in a preset forwarding table entry according to the forwarding information of any non-TRILL message;

and the second message sending module is used for sending the TRILL message obtained after the message is packaged to the searched packaged forwarding interface board so that the interface board forwards the TRILL message.

10. The apparatus of claim 9, wherein the second interface board lookup module comprises: