CN115941603A - Method and network equipment for processing message - Google Patents
Method and network equipment for processing message Download PDFInfo
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- CN115941603A CN115941603A CN202211320543.2A CN202211320543A CN115941603A CN 115941603 A CN115941603 A CN 115941603A CN 202211320543 A CN202211320543 A CN 202211320543A CN 115941603 A CN115941603 A CN 115941603A
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
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Abstract
This specification provides a method and network device for processing packets, the method including: the method comprises the steps of obtaining a first resource utilization rate of a first main control unit and a second resource utilization rate of a second main control unit, comparing the first resource utilization rate with the second resource utilization rate to obtain a comparison result, and sending a message to the first main control unit and/or the second main control unit according to the comparison result. By the method, the problem that the physical link of the RC and the bridge uplink port is congested and the message is discarded when the line card message of the network equipment is large can be solved.
Description
Technical Field
The present disclosure relates to the field of communications technologies, and in particular, to a method and a network device for processing a packet.
Background
Network equipment has been widely used in various industries to implement interconnection and intercommunication within various backbone networks, between backbone networks, and between backbone networks and the internet. The PCI Express bus is different from the prior I/0 bus, adopts a serial and point-to-point interconnection mode to realize the communication among the devices, and can provide a high-speed, high-performance and full-duplex communication mode for the interconnection of the network devices, thereby being widely applied to the network devices. A typical PCI Express bus system of a network device includes RC (root complex), switch and end devices (EP), and a bridge chip of PCI Express-PCI/PCI-X. Wherein the RC is generally integrated inside the processor or north bridge chip, switch implements interconnection and expansion between multiple links, EP is generally an I/O device in the system, and the bridge is used to implement device interfacing with conventional PCI, PCI-X bus or system interconnection.
In order to improve the reliability of the network device, the distributed network device usually processes network messages in a dual-master control line card loading manner, that is, the line card is used for receiving and transmitting network data, the primary master control processes service messages sent by the line card and sends the processed messages to be forwarded to a destination line card, and the standby master control is used as a primary master control abnormal backup.
In order to support more line cards, the PCIE line card and the master RC are interconnected through the PCIE bridge chip, as shown in fig. 1. In general, the bandwidth of the physical link between the RC and the bridge chip uplink port is smaller than the bandwidth of the physical link between all the downlink ports and the line cards PCIE. When the line card message of the network device is large, the message is jammed in the physical link between the RC and the uplink port of the bridge chip, and the buffer memory of the bridge chip is small, thereby causing the problem of message discarding.
Disclosure of Invention
The present disclosure provides a method for processing a packet and a network device, which can avoid the problem that when a line card packet of the network device is large, a physical link between an RC and a bridge uplink port is congested, and the packet is discarded.
The embodiment of the disclosure provides a method for processing a message, which is applied to a PCIE line card and comprises the following steps:
acquiring a first resource utilization rate of a first main control unit and a second resource utilization rate of a second main control unit;
comparing the first resource utilization rate with the second resource utilization rate to obtain a comparison result;
and sending the message to the first main control unit and/or the second main control unit according to the comparison result.
Wherein, the acquiring a first resource utilization rate of the first main control unit and a second resource utilization rate of the second main control unit includes:
and acquiring a first resource utilization rate and a second resource utilization rate of the first main control unit and the second main control unit through the bus.
Optionally, the comparing the first resource utilization rate and the second resource utilization rate to obtain a comparison result includes:
comparing the first resource utilization rate with the second resource utilization rate to obtain a comparison result of the sizes;
the sending the message to the first main control unit and/or the second main control unit according to the comparison result includes:
when the first resource utilization rate is greater than the second resource utilization rate, the message is sent to a second main control unit;
or when the first resource utilization rate is smaller than the second resource utilization rate, the message is sent to the first main control unit.
Optionally, the comparing the first resource utilization rate and the second resource utilization rate to obtain a comparison result includes:
setting a target threshold, and comparing the first resource utilization rate and the second resource utilization rate with the target threshold to obtain a comparison result of the sizes;
the sending the message to the first main control unit and/or the second main control unit according to the comparison result includes:
when the first resource utilization rate is greater than the target threshold value and the second resource utilization rate is less than the target threshold value, the message is sent to a second main control unit;
or when the first resource utilization rate is smaller than the target threshold value, the message is sent to the first main control unit;
or when the first resource utilization rate and the second resource utilization rate are both greater than the target threshold value, the messages are shared and respectively sent to the first main control unit and the second main control unit.
Wherein, according to the comparison result, sending the message to the first main control unit and/or the second main control unit includes:
generating a forwarding table according to the comparison result;
and sending the message to the first main control unit and/or the second main control unit according to the forwarding table.
Wherein the first resource utilization comprises: the PCIE card is connected to the bandwidth resource of the first main control unit;
the second resource utilization includes: and the PCIE line card is connected to the bandwidth resource of the second main control unit.
According to the embodiment, the line card message can be selectively sent to the first main control unit and/or the second main control unit through the scheme, so that the message is shared and sent, and the problem that the message is discarded due to the physical link congestion of an RC (remote control) and a bridge piece uplink port when the line card message of the network equipment is large is avoided.
The embodiment of the present disclosure provides a network device, where the network device includes at least one PCIE line card, and any PCIE line card includes:
the acquisition module is used for acquiring a first resource utilization rate of the first main control unit and a second resource utilization rate of the second main control unit;
the processing module is used for comparing the first resource utilization rate with the second resource utilization rate to obtain a comparison result;
and the sending module is used for sending the message to the first main control unit and/or the second main control unit according to the comparison result.
The acquiring module is specifically configured to acquire a first resource utilization rate and a second resource utilization rate of the first main control unit and the second main control unit through the bus.
The processing module is specifically configured to compare the first resource utilization rate with the second resource utilization rate to obtain a comparison result of the sizes;
the sending module is specifically configured to send the message to the second main control unit when the first resource utilization rate is greater than the second resource utilization rate;
or when the first resource utilization rate is smaller than the second resource utilization rate, the message is sent to the first main control unit.
The processing module is specifically configured to compare the first resource utilization rate and the second resource utilization rate with a target threshold to obtain a comparison result of the sizes;
the sending module is specifically configured to send the message to the second master control unit when the first resource utilization rate is greater than the target threshold and the second resource utilization rate is less than the target threshold;
or when the first resource utilization rate is smaller than the target threshold value, the message is sent to the first main control unit;
or when the first resource utilization rate and the second resource utilization rate are both greater than the target threshold value, the messages are shared and respectively sent to the first main control unit and the second main control unit.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present specification and together with the description, serve to explain the principles of the specification.
Fig. 1 is a schematic diagram of a network architecture according to an embodiment of the present disclosure.
Fig. 2 is a flowchart illustrating a method for processing a packet according to an embodiment of the present disclosure.
Fig. 3 is a schematic diagram of a network architecture according to an embodiment of the present disclosure.
Fig. 4 is a schematic diagram of a network architecture according to an embodiment of the present disclosure.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. The following description refers to the accompanying drawings in which the same 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 specification. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the specification, as detailed in the appended claims.
The terminology used in the description herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the description. As used in this specification 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.
It should be understood that although the terms first, second, third, etc. may be used herein to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present description. The word "if," as used herein, may be interpreted as "at \8230; \8230when" or "when 8230; \823030when" or "in response to a determination," depending on the context.
At present, because the RC resources (including the physical/virtual bandwidth resources of the RC) provided by the CPU of the distributed network device are limited, the PCIE system of the network device generally supports more EPs by using Switch (the working mode is generally set to be a transparent bridge, and only transparent transmission is performed on the packet, and the packet is not reassembled). The standby main control is used as the primary main control exception backup, namely the standby main control is upgraded to the primary main control under the condition of the primary main control exception and is connected with the original primary main control service.
In general, a distributed network device adopts a dual-master design, and a standby master can take over services of a master when the master is abnormal, so as to improve the reliability of the network device.
To solve the foregoing technical problem, an embodiment of the present disclosure provides a method for processing a packet, where the method is applied to a PCIE line card, and as shown in fig. 2, the method includes:
s201, acquiring a first resource utilization rate of a first main control unit and a second resource utilization rate of a second main control unit;
s202, comparing the first resource utilization rate with the second resource utilization rate to obtain a comparison result;
s203, according to the comparison result, the message is sent to the first main control unit and/or the second main control unit.
In this embodiment, the first main control unit may be understood as an active main control unit, and the second main control unit may be understood as a standby main control unit, where it should be noted that the second main control unit may include a plurality of standby main control units.
As shown in fig. 3, the first main control unit (the second main control unit) mainly includes a CPU computing unit, a memory unit, a PCIE RC interface, and a PCIE bridge chip; the PCIE line card mainly comprises two PCIE interfaces, a service message is sent to a first main control unit and a second main control unit main control forwarding table item algorithm module, a port flow-by-flow table item storage and aging module and a message routing module. The forwarding table generation algorithm module and the port stream-by-stream forwarding table are used for deciding that the line card service message is sent to the first main control unit or the second main control unit; the master control PCIE Switch is used for converging the service message of the line card of the distributed equipment, then sending the service message to the master control RC, storing the service message to the memory in a DMA mode, and analyzing and processing the message by the CPU computing unit.
In an example, as shown in fig. 4, the first main control unit and the second main control unit are interconnected with the line card through a PCIE bus, a line card service message is sent to the main control bridge chip through a PCIE port of the line card, and the bridge chip sends all downlink port service messages to the main control CPU RC through address routing. The first main control unit and the second main control unit inform the RC bandwidth utilization rate to a line card patent logic device forwarding table item algorithm unit module through a logic bus. And the forwarding table generation algorithm unit module determines that the service message is sent to the first main control unit and/or the second main control unit according to the utilization rates of the first main control unit and the second main control unit and the service message flow-by-flow forwarding five-tuple (an original IP address, a destination IP address, a source port, a destination port and a protocol number) according to a hash calculation method. The port stream-by-stream forwarding table entry module records a message forwarding path to the first main control unit or the second main control unit, if the table entry is found by service message table lookup, the message is forwarded according to the table entry, and if the table entry is not established, the table entry is generated according to a forwarding table entry algorithm and is stored in the port stream-by-stream forwarding table entry. In addition, the port stream-by-stream forwarding table entry supports an aging mechanism, and if a certain forwarding table of the table entry is not used for a period of time, the table entry is aged (removed from the forwarding table entry). And the service message forwarding module confirms whether the table entry needs to be generated and sent to the master control unit or not according to the working states of the first master control unit and the second master control unit. If the single master control of the distributed network equipment normally works, the distributed network equipment is uploaded to the working master control; and if the working master control is a double master control, inquiring the table entry to confirm the master control which is sent up.
In step S201, the PCIE line card may obtain a first resource utilization rate of the first main control unit and a second resource utilization rate of the second main control unit through buses with the first main control unit and the second main control unit, where the first resource utilization rate includes: the PCIE line card accesses bandwidth resources (RC bandwidth resources) of the first master control unit, and the second resource utilization includes: the PCIE line card to a bandwidth resource (RC bandwidth resource) of the second master control unit.
In step S202, the first resource utilization rate and the second resource utilization rate may be directly utilized to perform comparison, so as to obtain a comparison result of the sizes, and when the first resource utilization rate is greater than the second resource utilization rate, the message is sent to the second main control unit;
or when the first resource utilization rate is smaller than the second resource utilization rate, the message is sent to the first main control unit.
In another embodiment, when the first resource utilization rate and the second resource utilization rate are compared, a target threshold value may be further configured, the first resource utilization rate and the second resource utilization rate are compared with the target threshold value to obtain a comparison result of the size, and when the first resource utilization rate is greater than the target threshold value and the second resource utilization rate is less than the target threshold value, the message is sent to the second main control unit;
or when the first resource utilization rate is smaller than the target threshold value, the message is sent to the first main control unit;
or when the first resource utilization rate and the second resource utilization rate are both greater than the target threshold value, the messages are shared and respectively sent to the first main control unit and the second main control unit.
In step S203, a forwarding table is generated according to the comparison result;
and sending the message to the first main control unit and/or the second main control unit according to the forwarding table.
In this embodiment, when sending a packet to the first main control unit and/or the second main control unit, the packet may be accurately sent to the specified core of the CPU in the first main control unit, and similarly, the packet may also be accurately sent to the specified core of the CPU in the second main control unit, which may be implemented by HASH calculation.
Based on the above description, in an embodiment, the first main control unit and the second main control unit are interconnected with the PCIE line card through a PCIE bus, a PCIE line card service message is sent to the main control bridge chip through a PCIE port of the PCIE line card, and the bridge chip sends all downlink port service messages to the main control CPU RC through address routing. The first main control unit and the second main control unit inform the RC bandwidth utilization rate to the PCIE line card through a logic bus, and the service message is determined to be sent to the first main control unit and/or the second main control unit according to a comparison result obtained by comparing the first resource utilization rate with the second resource utilization rate through a forwarding table generation algorithm unit module and a hash calculation method by a service message flow-by-flow forwarding quintuple (an original IP address, a destination IP address, a source port, a destination port and a protocol number). The port stream-by-stream forwarding table entry module records the message and sends the message to the first main control unit or the forwarding path of the first main control unit, if the table entry is found by the service message table look-up, the message is sent according to the table entry, and if the table entry is not established, the process of generating the forwarding table is repeated.
The port stream-by-stream forwarding table entry supports an aging mechanism, and if a certain forwarding table of the table entry is not used for a period of time, the table entry is aged (deleted from the forwarding table entry). And the service message forwarding module confirms whether the table entry needs to be generated or not to be uploaded to the master control according to the working states of the first master control unit and the second master control unit. If the single master control of the distributed network equipment normally works, the distributed network equipment is uploaded to the working master control; and if the working master control is a double master control, inquiring the table entry to confirm the master control which is sent up.
According to the embodiments, the PCIE line card compares the first resource utilization rate of the first main control unit with the second resource utilization rate of the second main control unit, and selects to send the service message to the first main control unit and/or the second main control unit, so that the standby main control unit can process the service message, and the problem that the message is discarded due to the congestion of the physical link of the RC and the uplink port of the bridge piece when the line card message of the network equipment is large is avoided.
Based on the foregoing method embodiment, an embodiment of the present disclosure provides a network device, where the network device includes at least one PCIE line card, and each PCIE line card includes:
the acquisition module is used for acquiring a first resource utilization rate of the first main control unit and a second resource utilization rate of the second main control unit;
the processing module is used for comparing the first resource utilization rate with the second resource utilization rate to obtain a comparison result;
and the sending module is used for sending the message to the first main control unit and/or the second main control unit according to the comparison result.
The acquiring module is specifically configured to acquire a first resource utilization rate and a second resource utilization rate of the first main control unit and the second main control unit through the bus.
The processing module is specifically configured to compare the first resource utilization rate with the second resource utilization rate to obtain a comparison result of the sizes;
the sending module is specifically configured to send the message to the second main control unit when the first resource utilization rate is greater than the second resource utilization rate;
or when the first resource utilization rate is smaller than the second resource utilization rate, the message is sent to the first main control unit.
The processing module is specifically configured to compare the first resource utilization rate and the second resource utilization rate with a target threshold value, and obtain a comparison result of the sizes;
the sending module is specifically configured to send the message to the second master control unit when the first resource utilization rate is greater than the target threshold and the second resource utilization rate is less than the target threshold;
or when the first resource utilization rate is smaller than the target threshold value, the message is sent to the first main control unit;
or when the first resource utilization rate and the second resource utilization rate are both greater than the target threshold value, the messages are shared and respectively sent to the first main control unit and the second main control unit.
The foregoing description of specific embodiments has been presented for purposes of illustration and description. Other embodiments are within the scope of the following claims. In some cases, the actions or steps recited in the claims may be performed in a different order than in the embodiments and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some embodiments, multitasking and parallel processing may also be possible or may be advantageous.
Other embodiments of the present disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This specification is intended to cover any variations, uses, or adaptations of the specification following, in general, the principles of the specification and including such departures from the present disclosure as come within known or customary practice within the art to which the specification pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the specification being indicated by the following claims.
It will be understood that the present description is not limited to the precise arrangements described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present description is limited only by the appended claims.
The above description is only a preferred embodiment of the present disclosure, and should not be taken as limiting the present disclosure, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present disclosure should be included in the scope of the present disclosure.
Claims (10)
1. A method for processing a packet is applied to a PCIE line card, and the method comprises the following steps:
acquiring a first resource utilization rate of a first main control unit and a second resource utilization rate of a second main control unit;
comparing the first resource utilization rate with the second resource utilization rate to obtain a comparison result;
and sending the message to the first main control unit and/or the second main control unit according to the comparison result.
2. The method according to claim 1, wherein the obtaining a first resource utilization rate of the first master unit and a second resource utilization rate of the second master unit comprises:
and acquiring a first resource utilization rate and a second resource utilization rate of the first main control unit and the second main control unit through the bus.
3. The method of claim 1, wherein comparing the first resource utilization ratio and the second resource utilization ratio to obtain a comparison result comprises:
comparing the first resource utilization rate with the second resource utilization rate to obtain a comparison result of the sizes;
the sending the message to the first main control unit and/or the second main control unit according to the comparison result includes:
when the first resource utilization rate is greater than the second resource utilization rate, the message is sent to a second main control unit;
or when the first resource utilization rate is smaller than the second resource utilization rate, the message is sent to the first main control unit.
4. The method of claim 1, wherein comparing the first resource utilization ratio and the second resource utilization ratio to obtain a comparison result comprises:
setting a target threshold, and comparing the first resource utilization rate and the second resource utilization rate with the target threshold to obtain a comparison result of the sizes;
the sending the message to the first main control unit and/or the second main control unit according to the comparison result includes:
when the first resource utilization rate is greater than the target threshold value and the second resource utilization rate is less than the target threshold value, the message is sent to a second main control unit;
or when the first resource utilization rate is smaller than the target threshold value, the message is sent to the first main control unit;
or when the first resource utilization rate and the second resource utilization rate are both greater than the target threshold value, the messages are shared and respectively sent to the first main control unit and the second main control unit.
5. The method according to any one of claims 1 to 4, wherein sending the message to the first master control unit and/or the second master control unit according to the comparison result comprises:
generating a forwarding table according to the comparison result;
and sending the message to the first main control unit and/or the second main control unit according to the forwarding table.
6. The method according to any one of claims 1 to 4,
the first resource utilization comprises: the PCIE card is connected to the bandwidth resource of the first main control unit;
the second resource utilization includes: and the PCIE line card is connected to the bandwidth resource of the second main control unit.
7. A network device, comprising at least one PCIE line card, wherein any PCIE line card comprises:
the acquisition module is used for acquiring a first resource utilization rate of the first main control unit and a second resource utilization rate of the second main control unit;
the processing module is used for comparing the first resource utilization rate with the second resource utilization rate to obtain a comparison result;
and the sending module is used for sending the message to the first main control unit and/or the second main control unit according to the comparison result.
8. The network device of claim 7,
the acquiring module is specifically configured to acquire a first resource utilization rate and a second resource utilization rate of the first main control unit and the second main control unit through the bus.
9. The network device of claim 7,
the processing module is specifically used for comparing the first resource utilization rate with the second resource utilization rate to obtain a comparison result of the sizes;
the sending module is specifically configured to send the message to the second main control unit when the first resource utilization rate is greater than the second resource utilization rate;
or when the first resource utilization rate is smaller than the second resource utilization rate, the message is sent to the first main control unit.
10. The network device of claim 7,
the processing module is specifically configured to compare the first resource utilization rate and the second resource utilization rate with a target threshold to obtain a comparison result of the sizes;
the sending module is specifically configured to send the message to the second master control unit when the first resource utilization rate is greater than the target threshold and the second resource utilization rate is less than the target threshold;
or when the first resource utilization rate is smaller than the target threshold value, the message is sent to the first main control unit;
or when the first resource utilization rate and the second resource utilization rate are both greater than the target threshold value, the messages are shared and sent to the first main control unit and the second main control unit respectively.
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