CN114598639B - Message processing method and device - Google Patents
Message processing method and device Download PDFInfo
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- CN114598639B CN114598639B CN202210109456.6A CN202210109456A CN114598639B CN 114598639 B CN114598639 B CN 114598639B CN 202210109456 A CN202210109456 A CN 202210109456A CN 114598639 B CN114598639 B CN 114598639B
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- 238000003672 processing method Methods 0.000 title claims abstract description 8
- 238000000034 method Methods 0.000 claims abstract description 27
- 238000001514 detection method Methods 0.000 claims abstract description 9
- 230000002457 bidirectional effect Effects 0.000 claims description 4
- 230000010355 oscillation Effects 0.000 abstract description 4
- 238000002955 isolation Methods 0.000 description 8
- 239000000284 extract Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 101100059544 Arabidopsis thaliana CDC5 gene Proteins 0.000 description 1
- 101100244969 Arabidopsis thaliana PRL1 gene Proteins 0.000 description 1
- 101100289995 Caenorhabditis elegans mac-1 gene Proteins 0.000 description 1
- 102100039558 Galectin-3 Human genes 0.000 description 1
- 101100454448 Homo sapiens LGALS3 gene Proteins 0.000 description 1
- 101150115300 MAC1 gene Proteins 0.000 description 1
- 101150051246 MAC2 gene Proteins 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000009514 concussion Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 239000004065 semiconductor Substances 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/22—Alternate routing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/28—Routing or path finding of packets in data switching networks using route fault recovery
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/60—Router architectures
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Abstract
The application provides a message processing method and device. The method is applied to the CPU in the main control board in the routing equipment, and comprises the following steps: when receiving the BFD message, acquiring slot position information of a forwarding board for transmitting the BFD message in the routing equipment from the BFD message; acquiring the main and standby states of the forwarding board corresponding to the slot position information; when the acquired active/standby state is the active state, processing the BFD message; and discarding the BFD message when the acquired main and standby states are standby states. The method and the device can avoid the problem of session oscillation, and further ensure BFD detection results.
Description
Technical Field
The present disclosure relates to the field of communications technologies, and in particular, to a method and an apparatus for processing a message.
Background
In the routing equipment supporting the primary backup and the backup of the forwarding boards, the data and the like between the forwarding boards in the primary state and the forwarding boards in the backup state are backed up in real time, so that the primary backup switching of the forwarding boards can be realized in time under the condition that the forwarding boards in the primary state are failed, thereby realizing the rapid backup switching of the service and further improving the reliability of related services.
In the scenario that the routing device processes bidirectional forwarding detection (Bidirectional Forwarding Detection, BFD) service, when any daughter card in the routing device receives a BFD packet sent by the opposite-end routing device, the daughter card copies the BFD packet; and the sub-card can respectively send the two BFD messages to the forwarding board in the main state and the forwarding board in the standby state.
After receiving the BFD messages sent by the sub-cards, the relevant forwarding chips in the forwarding boards in the main state and the forwarding boards in the standby state send the BFD messages to the exchange chips which are in communication with the sub-cards, the corresponding exchange chips judge whether the received BFD messages hit the isolation table entry or not, discard the corresponding BFD messages when the judgment result is yes, and continuously send the corresponding BFD messages to the central processing unit (Central Processing Unit, CPU) in the main control board for processing through the exchange chips in the main control board in the routing equipment when the judgment result is no.
Here, when the corresponding exchange chip is the exchange chip in the forwarding board in the active state, the above-mentioned judgment result is no; and when the corresponding exchange chip is the exchange chip in the forwarding board in the standby state, the judgment result is yes.
However, when the forwarding board in the routing device performs active-standby switching, the corresponding isolation table item needs to be refreshed, and since the refresh task cannot be guaranteed to be completed within the timeout period of the corresponding BFD session, the situation that the CPU does not receive the corresponding BFD message sent by the new forwarding board in the active state when the timeout period arrives is easy to occur, so that the session concussion problem occurs, and the BFD detection result is further affected.
Disclosure of Invention
In order to overcome the problems in the related art, the application provides a message processing method and a message processing device.
According to a first aspect of an embodiment of the present application, there is provided a method for processing a message, where the method is applied to a CPU in a main control board in a routing device, and the method includes:
when a BFD message is received, acquiring slot position information of a forwarding board which transmits the BFD message from the BFD message in the routing equipment;
acquiring the main and standby states of the forwarding board corresponding to the slot position information;
when the acquired active/standby state is the active state, processing the BFD message;
and discarding the BFD message when the acquired main and standby states are standby states.
According to a second aspect of embodiments of the present application, there is provided a packet processing apparatus, where the apparatus is applied to a CPU in a main control board in a routing device, the apparatus includes:
the first acquisition module is used for acquiring the slot position information of a forwarding board for transmitting the BFD message from the BFD message when receiving the BFD message;
the second acquisition module is used for acquiring the main and standby states of the forwarding board corresponding to the slot position information;
the processing module is used for processing the BFD message when the main and standby states acquired by the second acquisition module are main states; and discarding the BFD message when the primary and standby states acquired by the second acquisition module are standby states.
The technical scheme provided by the embodiment of the application can comprise the following beneficial effects:
in this embodiment of the present application, for any forwarding board in the routing device, whether in the active state or in the standby state, the received BFD packet is sent to the CPU in the active main control board in the routing device, that is, the exchange chip side in the forwarding board does not configure the relevant isolation table entry any more; the CPU acquires the slot information of the forwarding board of the BFD message from the received BFD message, and further acquires the master/slave state of the forwarding board corresponding to the slot information; when the acquired active/standby state is the active state, the CPU processes the BFD message; and when the acquired main and standby states are standby states, the CPU discards the BFD message.
Therefore, under the condition that the forwarding board in the routing equipment generates main-standby switching, the isolation table item is not required to be refreshed, the BFD message is still normally sent, and finally, the CPU in the main control board in the routing equipment decides whether to continuously process the related BFD message or discard the related BFD message, so that the problem of session oscillation is avoided, and the BFD detection result is further ensured.
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.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application.
Fig. 1 is a flow chart of a message processing method provided in an embodiment of the present application;
fig. 2 is a schematic diagram of a transmission path of a BFD packet according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of a message processing apparatus according to an embodiment of the present application.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present application as detailed in the accompanying claims.
The terminology used in the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the present 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 or all possible combinations of one or more of the associated listed items.
Next, embodiments of the present application will be described in detail.
The embodiment of the application provides a message processing method, which is applied to a CPU in a main control board in a routing device, as shown in fig. 1, and the method can comprise the following steps:
s11, when the BFD message is received, the slot information of the forwarding board for transmitting the BFD message in the routing equipment is acquired from the BFD message.
S12, acquiring the main and standby states of the forwarding board corresponding to the slot position information.
And S13, when the acquired active/standby state is the active state, processing the BFD message.
S14, discarding the BFD message when the acquired main and standby states are standby states.
Specifically, in the step S11, when the CPU obtains the slot information of the forwarding board that sends the BFD packet in the routing device from the BFD packet, the CPU may extract the source media access control (Media Access Control, MAC) address from the header of the BFD packet, and obtain the slot information of the forwarding board that sends the BFD packet in the routing device from the source MAC address.
Here, the source MAC address actually refers to a MAC address of a designated forwarding chip in a forwarding board that transmits the BFD packet in the routing device.
The above-mentioned BFD packet is actually sent by the switch chip in the forwarding board where the designated forwarding chip in the routing device is located and the switch chip in the active main control board in the routing device after the foregoing-mentioned designated forwarding chip encapsulates the packet header including the active MAC address (i.e., the MAC address of the designated forwarding chip) and the destination MAC address (i.e., the MAC address of the CPU in the active main control board in the routing device) for the original BFD packet when the foregoing-mentioned original BFD packet forwarded by the daughter card of the original BFD packet received by the opposite end routing device in the routing device is received.
It should be noted that, the designated forwarding chip may be an NP chip, etc., and the foregoing sub-card makes a decision based on the existing decision policy, and the specific decision process is the prior art and will not be described in detail herein.
More specifically, when the CPU obtains the slot information of the forwarding board transmitting the BFD packet in the routing device from the source MAC address, the CPU may extract the last N characters from the source MAC address, and determine the extracted characters as the slot information of the forwarding board transmitting the BFD packet in the routing device.
Here, the value of N is a positive integer, for example, the value of N is 2, or the like. The slot information may be a slot number or the like.
Of course, the CPU may also extract the slot information by using other extraction methods, for example, the CPU extracts the first M characters from the source MAC address, where the value of M is a positive integer, which is not listed here.
Specifically, the present invention relates to a method for manufacturing a semiconductor device. In the step S12, when the CPU acquires the active/standby state of the forwarding board corresponding to the slot information, the CPU may acquire the active/standby state of the forwarding board corresponding to the slot information from the complex programmable logic device (Complex Programmable Logic Device, CPLD) register, and the specific acquisition process is the prior art and will not be described in detail herein.
The above message processing method is described in detail below with reference to specific embodiments.
As shown in fig. 2, it is assumed that the slot number corresponding to the forwarding board 12 in the routing device 1 is 01, and this slot number is embodied in the MAC address of the NP chip 121 in the forwarding board 12, for example, the last 2 characters in the MAC address (for example, MAC 1) of the NP chip 121 are 01; assuming that the slot number corresponding to the forwarding board 13 in the routing device 1 is 02, this slot number is embodied in the MAC address of the NP chip 131 in the forwarding board 13, for example, the last 2 characters in the MAC address (e.g., MAC 2) of the NP chip 131 are 02.
Assuming that the daughter card 11 in the routing device 1 receives the BFD packet 1 sent by the routing device 2, then the daughter card 11 duplicates one BFD packet 1, and sends one BFD packet 1 to the NP chip 121, and sends another BFD packet 1 to the NP chip 131.
After the NP chip 121 receives the BFD packet 1, the NP packet header is encapsulated in the BFD packet 1 to obtain the BFD packet 2, and the BFD packet 2 is sent to the switch chip 122, and the switch chip 122 sends the BFD packet 2 to the CPU142 in the main control board 14 through the switch chip 141 in the main control board 14. Here, the source MAC address in the NP header of the BFD packet is MAC1, and the destination MAC address is the MAC address of the CPU142.
After the NP chip 131 receives the BFD packet 1, a packet header (may be referred to as an NP packet header) is encapsulated in the BFD packet 1, so as to obtain a BFD packet 3, and the BFD packet 3 is sent to the switch chip 132, and the switch chip 132 sends the BFD packet to the CPU142 in the main control board 14 through the switch chip 141 in the main control board 14. Here, the source MAC address in the NP header of the BFD packet is MAC2, and the destination MAC address is the MAC address of the CPU142.
Next, assume that CPU142 receives BFD packet 2 first and BFD packet 3 second. Then, after receiving BFD message 2, CPU142 extracts the last 2 characters (i.e., 01) from the source MAC address in the NP header of BFD message 2, and determines the extracted characters as the slot number of the forwarding board that sends BFD message 2; since 01 corresponds to the forwarding board 12, the CPU can know that the forwarding board that sends the BFD packet 2 is the forwarding board 12, at this time, the CPU142 further obtains the active/standby state of the forwarding board 12 from the CPLD register, and in this case, the CPU142 processes the BFD packet 2 assuming that the obtained active/standby state is the active state. Here, when the CPU142 specifically processes the BFD packet 2, the NP header of the BFD packet 2 is deleted to obtain the BFD packet 1, and then the BFD packet 1 is processed.
After receiving BFD message 3, CPU142 extracts the last 2 characters (i.e., 02) from the source MAC address in the NP header of BFD message 3, and determines the extracted characters as the slot number of the forwarding board that sent BFD message 3; since 02 corresponds to the forwarding board 13, the CPU can know that the forwarding board that sends the BFD packet 3 is the forwarding board 13, at this time, the CPU142 further obtains the active/standby state of the forwarding board 13 from the CPLD register, and in this case, the CPU142 discards the BFD packet 3 assuming that the obtained active/standby state is the standby state.
As can be seen from the above technical solutions, in the embodiments of the present application, for any forwarding board in a routing device, whether in a main state or in a standby state, the received BFD packet is sent to a CPU in a main control board in the routing device, that is, a switching chip side in the forwarding board is no longer configured with relevant isolation entries; the CPU acquires the slot information of the forwarding board of the BFD message from the received BFD message, and further acquires the master/slave state of the forwarding board corresponding to the slot information; when the acquired active/standby state is the active state, the CPU processes the BFD message; and when the acquired main and standby states are standby states, the CPU discards the BFD message.
Therefore, under the condition that the forwarding board in the routing equipment generates main-standby switching, the isolation table item is not required to be refreshed, the BFD message is still normally sent, and finally, the CPU in the main control board in the routing equipment decides whether to continuously process the related BFD message or discard the related BFD message, so that the problem of session oscillation is avoided, and the BFD detection result is further ensured.
Based on the same inventive concept, the present application further provides a message processing apparatus, where the apparatus is applied to a CPU in a main control board in a routing device, and a structural schematic diagram of the apparatus is shown in fig. 3, and specifically includes:
a first obtaining module 31, configured to obtain, when receiving a bidirectional forwarding detection BFD packet, slot information of a forwarding board that sends the BFD packet in the routing device from the BFD packet;
a second obtaining module 32, configured to obtain a master-slave state of the forwarding board corresponding to the slot information;
a processing module 33, configured to process the BFD packet when the active/standby state acquired by the second acquiring module 32 is an active state; and discarding the BFD message when the active/standby state acquired by the second acquisition module 32 is the standby state.
Preferably, the first obtaining module 31 specifically includes:
an extracting unit (not shown in fig. 3) configured to extract a source MAC address from a header of the BFD packet, where the source MAC address is a MAC address of a designated forwarding chip in a forwarding board that sends the BFD packet in the routing device; and
an obtaining unit (not shown in fig. 3) configured to obtain, from the source MAC address, slot information of a forwarding board in the routing device that sends the BFD packet.
Preferably, the acquiring unit is specifically configured to:
extracting the last N characters from the source MAC address, wherein the value of N is a positive integer;
and determining the extracted characters as slot information of a forwarding board for transmitting the BFD message in the routing equipment.
Preferably, the second obtaining module 32 is specifically configured to:
and acquiring the main and standby states of the forwarding board corresponding to the slot information from the CPLD register.
Preferably, the designated forwarding chip is an NP chip.
As can be seen from the above technical solutions, in the embodiments of the present application, for any forwarding board in a routing device, whether in a main state or in a standby state, the received BFD packet is sent to a CPU in a main control board in the routing device, that is, a switching chip side in the forwarding board is no longer configured with relevant isolation entries; the CPU acquires the slot information of the forwarding board of the BFD message from the received BFD message, and further acquires the master/slave state of the forwarding board corresponding to the slot information; when the acquired active/standby state is the active state, the CPU processes the BFD message; and when the acquired main and standby states are standby states, the CPU discards the BFD message.
Therefore, under the condition that the forwarding board in the routing equipment generates main-standby switching, the isolation table item is not required to be refreshed, the BFD message is still normally sent, and finally, the CPU in the main control board in the routing equipment decides whether to continuously process the related BFD message or discard the related BFD message, so that the problem of session oscillation is avoided, and the BFD detection result is further ensured.
The foregoing description of the preferred embodiments of the present invention is not intended to limit the invention to the precise form disclosed, and any modifications, equivalents, improvements and alternatives falling within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The message processing method is characterized in that the method is applied to a Central Processing Unit (CPU) in a main control board in routing equipment, and the method comprises the following steps:
when receiving a Bidirectional Forwarding Detection (BFD) message, acquiring slot information of a forwarding board in the routing equipment, which transmits the BFD message, from the BFD message;
acquiring the main and standby states of the forwarding board corresponding to the slot position information;
when the acquired active/standby state is the active state, processing the BFD message;
and discarding the BFD message when the acquired main and standby states are standby states.
2. The method according to claim 1, wherein obtaining, from the BFD packet, slot information of a forwarding board in the routing device that sends the BFD packet, specifically includes:
extracting a source MAC address from a message header of the BFD message, wherein the source MAC address is an MAC address of a designated forwarding chip in a forwarding board for sending the BFD message in the routing equipment;
and acquiring the slot position information of the forwarding board for transmitting the BFD message from the routing equipment from the source MAC address.
3. The method according to claim 2, wherein the obtaining, from the source MAC address, slot information of a forwarding board in the routing device that sends the BFD packet specifically includes:
extracting the last N characters from the source MAC address, wherein the value of N is a positive integer;
and determining the extracted characters as slot information of a forwarding board for transmitting the BFD message in the routing equipment.
4. The method of claim 1, wherein the obtaining the master/slave state of the forwarding board corresponding to the slot information specifically includes:
and acquiring the main and standby states of the forwarding board corresponding to the slot information from the CPLD register.
5. The method of claim 2, wherein the designated forwarding chip is a network processor NP chip.
6. The device is applied to a Central Processing Unit (CPU) in a main control board in a routing device, and comprises:
the first acquisition module is used for acquiring the slot position information of a forwarding board for transmitting the BFD message from the BFD message when receiving the BFD message;
the second acquisition module is used for acquiring the main and standby states of the forwarding board corresponding to the slot position information;
the processing module is used for processing the BFD message when the main and standby states acquired by the second acquisition module are main states; and discarding the BFD message when the primary and standby states acquired by the second acquisition module are standby states.
7. The apparatus of claim 6, wherein the first acquisition module specifically comprises:
an extracting unit, configured to extract a source MAC address from a header of the BFD packet, where the source MAC address is a MAC address of a designated forwarding chip in a forwarding board that sends the BFD packet in the routing device; and
and the acquisition unit is used for acquiring the slot position information of the forwarding board for transmitting the BFD message in the routing equipment from the source MAC address.
8. The apparatus according to claim 7, wherein the acquisition unit is specifically configured to:
extracting the last N characters from the source MAC address, wherein the value of N is a positive integer;
and determining the extracted characters as slot information of a forwarding board for transmitting the BFD message in the routing equipment.
9. The apparatus of claim 6, wherein the second acquisition module is specifically configured to:
and acquiring the main and standby states of the forwarding board corresponding to the slot information from the CPLD register.
10. The apparatus of claim 7, wherein the designated forwarding chip is a network processor NP chip.
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| CN202210109456.6A CN114598639B (en) | 2022-01-28 | 2022-01-28 | Message processing method and device |
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| CN202210109456.6A CN114598639B (en) | 2022-01-28 | 2022-01-28 | Message processing method and device |
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