CN111010328A - Method and equipment for preventing white board switch from being looped - Google Patents
Method and equipment for preventing white board switch from being looped Download PDFInfo
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- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/42—Loop networks
- H04L12/437—Ring fault isolation or reconfiguration
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Abstract
The invention provides a method and equipment for preventing a white board exchanger from being looped, wherein the method comprises the following steps: defining the Ethernet type in the loop detection message as a first parameter in the white board switch; responding to the port of the switch receiving the message and the Ethernet type being a first parameter, transmitting the message to the CPU for analysis; responding to the analyzed message with the source mac address as the port address and the load as the vlan number of the port, and judging that the port is short-circuited; the shorted port is disabled to prevent loop messages from being generated. By using the method and the equipment of the invention, when the port is short-circuited due to misoperation, the short-circuited port can be effectively and automatically down-switched, thereby reducing the consumption of the broadcast storm message on the CPU, reducing the utilization rate of the CPU, ensuring that the normal protocol message can be processed by the CPU, ensuring that the data service can be normally forwarded and ensuring that the switch can be normally used.
Description
Technical Field
The field relates to the field of computers, and more particularly to a method for ring prevention of a white-card switch.
Background
Currently, there are many small and medium-sized enterprises using traditional switches of the Huashi, Huasan and Cisco brands, while large enterprises such as Google, Amazon and Facebook have started to take the lead to use white-brand switches. The former is programmable and the latter is not programmable, as compared to conventional switches. The biggest bright spot of the white-card switch is strong openness, that is, the operating system, software and other aspects of the white-card switch have more choices for users.
When designing a network, a ring link is considered to be configured with an anti-loop protocol (such as STP), but a non-ring link is generally not configured with the anti-loop protocol, but a wiring error may occur in a networking process, so that a loop is formed. Once the two-layer loop occurs, the broadcast, multicast and unknown unicast messages in the two-layer network are repeatedly copied in a large number of cycles to form a broadcast storm, and the broadcast storm is formed and can be directly uploaded to the control plane of the router. The uploading of a large number of messages occupies the bandwidth of the normal protocol messages, so that the normal protocol messages are discarded, the normal service is influenced, and meanwhile, the CPU occupancy rate is increased.
The current data center operating system, SONIC, does not support a two-layer based port loop detection mechanism and thus is highly likely to cause broadcast storms due to misoperations.
Disclosure of Invention
In view of this, an object of the embodiments of the present invention is to provide a method and an apparatus for ring prevention of a white-tablet switch, which can effectively drop a short-circuited port automatically when the port is short-circuited due to an incorrect operation, thereby reducing consumption of a broadcast storm packet on a CPU, reducing a utilization rate of the CPU, and ensuring that a normal protocol packet can be processed by the CPU, a data service can be forwarded normally, and the switch can be used normally.
In view of the above objects, an aspect of an embodiment of the present invention provides a ring-proof method for a white board switch, including the steps of:
defining the Ethernet type in the loop detection message as a first parameter in the white board switch;
responding to the port of the switch receiving the message and the Ethernet type being a first parameter, transmitting the message to the CPU for analysis;
responding to the analyzed message with the source mac address as the port address and the load as the vlan number of the port, and judging that the port is short-circuited;
the shorted port is disabled to prevent loop messages from being generated.
According to an embodiment of the present invention, further comprising: and enabling the port after the short-circuited port is disabled for a first threshold time interval.
According to one embodiment of the invention, the first threshold time is 300 seconds.
According to one embodiment of the invention, the loop detection message is configured to be sent once every second threshold time.
According to one embodiment of the invention, disabling the shorted port comprises: switch loop disable table entry information is obtained and modified in the statistics database to disable ports.
In another aspect of the embodiments of the present invention, there is also provided a white board switch ring prevention apparatus, comprising:
at least one processor; and
a memory storing program code executable by the processor, the program code when executed by the processor performing the steps of:
defining the Ethernet type in the loop detection message as a first parameter in the white board switch;
responding to the port of the switch receiving the message and the Ethernet type being a first parameter, transmitting the message to the CPU for analysis;
responding to the analyzed message with the source mac address as the port address and the load as the vlan number of the port, and judging that the port is short-circuited;
the shorted port is disabled to prevent loop messages from being generated.
According to an embodiment of the invention, the program code further performs the following steps when executed by the processor: and enabling the port after the short-circuited port is disabled for a first threshold time interval.
According to one embodiment of the invention, the first threshold time is 300 seconds.
According to one embodiment of the invention, the loop detection message is configured to be sent once every second threshold time.
According to one embodiment of the invention, disabling the shorted port comprises: switch loop disable table entry information is obtained and modified in the statistics database to disable ports.
The invention has the following beneficial technical effects: the method for preventing the white board switch from being looped provided by the embodiment of the invention defines the Ethernet type in the loop detection message as a first parameter; responding to the port of the switch receiving the message and the Ethernet type being a first parameter, transmitting the message to the CPU for analysis; responding to the analyzed message with the source mac address as the port address and the load as the vlan number of the port, and judging that the port is short-circuited; the technical scheme of enabling the short-circuited port to prevent the loop message from being generated can effectively and automatically down the short-circuited port when the port is short-circuited due to misoperation, thereby reducing the consumption of the broadcast storm message on a CPU (central processing unit), reducing the utilization rate of the CPU, ensuring that a normal protocol message can be processed by the CPU, normally forwarding a data service and normally using a switch.
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In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other embodiments can be obtained by using the drawings without creative efforts.
Fig. 1 is a schematic flow diagram of a method of ring-proofing a white-card switch according to one embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the following embodiments of the present invention are described in further detail with reference to the accompanying drawings.
In view of the above objects, a first aspect of embodiments of the present invention provides an embodiment of a method for ring-prevention of a white-card switch. Fig. 1 shows a schematic flow diagram of the method.
As shown in fig. 1, the method may include the steps of:
s1 defining an ethernet type (ethertype) in the loop detection message as a first parameter in the white board switch, where the first parameter may be set to 9155, and determining whether the message is a normal communication message or a message for loop detection according to the first parameter;
s2, responding to the message received by the port of the switch and the Ethernet type is the first parameter, transmitting the message to the CPU for analysis, wherein the step is that when the switch sets an ACL rule and the Ethernet type in the two-layer message is 9155, the message is directly transmitted to the CPU for analysis;
s3, responding to the analyzed message that the source mac address is the port address and the load is the vlan number of the port, judging that the port is short-circuited, when the message received by the port of the switch is a loop detection message, the CPU will analyze the message into the forms of source mac (smac), ethertype and load (payload), then judging whether the smac in the message is the same as the mac of the current port, and simultaneously judging whether the load is the vlan number of the current port, if the two judgment conditions are the same, it is indicated that the current port is short-circuited, and the current port needs to be correspondingly processed;
s4 disables the short-circuited port to prevent the loop message from being generated, which can also be understood as turning off the current port, so that the short-circuited port cannot directly cause a large amount of cyclic duplication of broadcast, multicast and unknown unicast messages in the two-layer network, and cannot form a broadcast storm.
The method is mainly used for preventing short circuit between the ports of the switches caused by misoperation in the networking process, so that broadcast, multicast and unknown unicast messages in a two-layer network can be repeatedly copied in a large number of cycles to form broadcast storms.
Through the technical scheme, when the port is short-circuited due to misoperation, the short-circuited port can be effectively and automatically down, so that the consumption of the broadcast storm message on the CPU is reduced, the utilization rate of the CPU is reduced, the normal protocol message can be processed by the CPU, the data service can be normally forwarded, and the switch can be normally used.
In a preferred embodiment of the present invention, the method further comprises: and enabling the port after the short-circuited port is disabled for a first threshold time interval.
In a preferred embodiment of the invention, the first threshold time is 300 seconds. After the shorted port is turned off, the port is enabled, i.e., re-enabled, at fixed intervals, where the interval is set to 300 seconds, but may be other suitable times. And re-enabling the port, if the port is not short-circuited with other ports in the subsequent detection, normally using the port, and if the port is short-circuited in the subsequent detection, continuing to process according to the method.
In a preferred embodiment of the present invention, the loop detection message is configured to be sent every second threshold time, where the second threshold time may be set to 2 seconds, or may be other suitable times.
In a preferred embodiment of the present invention, disabling the shorted port comprises: switch loop disable table entry information is obtained and modified in the statistics database to disable ports.
Through the technical scheme, the fact that the Insight platform Redis component has high availability can be verified, the testing efficiency is improved, human resources are saved, guarantee and basis are provided for Redis high-availability cluster function testing of the cluster, and the product competitiveness is improved.
It should be noted that, as will be understood by those skilled in the art, all or part of the processes in the methods of the above embodiments may be implemented by instructing relevant hardware through a computer program, and the above programs may be stored in a computer-readable storage medium, and when executed, the programs may include the processes of the embodiments of the methods as described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), or the like. The embodiments of the computer program may achieve the same or similar effects as any of the above-described method embodiments.
Furthermore, the method disclosed according to an embodiment of the present invention may also be implemented as a computer program executed by a CPU, and the computer program may be stored in a computer-readable storage medium. The computer program, when executed by the CPU, performs the above-described functions defined in the method disclosed in the embodiments of the present invention.
In view of the above object, according to a second aspect of the embodiments of the present invention, there is provided a ring-proof apparatus for a white board switch, comprising:
at least one processor; and
a memory storing program code executable by the processor, the program code when executed by the processor performing the steps of:
defining the Ethernet type in the loop detection message as a first parameter in the white board switch, wherein the first parameter can be set to 9155, and judging whether the message is a normal communication message or a message for loop detection according to the first parameter;
responding to a port of a switch to receive a message and an Ethernet type is a first parameter, and transmitting the message to a CPU for analysis, wherein the step is that when an ACL rule is set in the switch and the Ethernet type in a two-layer message is specified to be 9155, the message is directly transmitted to the CPU for analysis;
responding to a source mac address in the analyzed message as a port address and a load as a vlan number of the port, judging that the port is short-circuited, when the message received by the port of the switch is a loop detection message, analyzing the message into a source mac (smac), ethertype and load (payload) form by a CPU, judging whether the smac in the message is the same as the mac of the current port, and judging whether the load is the vlan number of the current port, wherein if the two judgment conditions are the same, the current port is short-circuited and the current port needs to be correspondingly processed;
the short-circuited port is enabled to prevent the generation of a loop message, and can also be understood as the current port is turned off, so that the short-circuited port directly cannot cause a large amount of cyclic duplication of broadcast, multicast and unknown unicast messages in a two-layer network, and a broadcast storm cannot be formed.
In a preferred embodiment of the invention, the program code further performs the following steps when executed by the processor: and enabling the port after the short-circuited port is disabled for a first threshold time interval.
In a preferred embodiment of the invention, the first threshold time is 300 seconds. After the shorted port is turned off, the port is enabled, i.e., re-enabled, at fixed intervals, where the interval is set to 300 seconds, but may be other suitable times. And re-enabling the port, if the port is not short-circuited with other ports in the subsequent detection, normally using the port, and if the port is short-circuited in the subsequent detection, continuing to process according to the method.
In a preferred embodiment of the present invention, the loop detection message is configured to be sent every second threshold time, where the second threshold time may be set to 2 seconds, or may be other suitable times.
In a preferred embodiment of the present invention, disabling the shorted port comprises: switch loop disable table entry information is obtained and modified in the statistics database to disable ports.
It should be particularly noted that the embodiment of the system described above employs the embodiment of the method described above to specifically describe the working process of each module, and those skilled in the art can easily think that the modules are applied to other embodiments of the method described above.
Further, the above-described method steps and system elements or modules may also be implemented using a controller and a computer-readable storage medium for storing a computer program for causing the controller to implement the functions of the above-described steps or elements or modules.
Those of skill would further appreciate that the various illustrative logical blocks, modules, circuits, and algorithm steps described in connection with the disclosure herein may be implemented as electronic hardware, computer software, or combinations of both. To clearly illustrate this interchangeability of hardware and software, various illustrative components, blocks, modules, circuits, and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as software or hardware depends upon the particular application and design constraints imposed on the overall system. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the disclosed embodiments of the present invention.
The embodiments described above, particularly any "preferred" embodiments, are possible examples of implementations and are presented merely to clearly understand the principles of the invention. Many variations and modifications may be made to the above-described embodiments without departing from the spirit and principles of the technology described herein. All such modifications are intended to be included within the scope of this disclosure and protected by the following claims.
Claims (10)
1. A method for preventing a loop of a white-card switch, comprising the steps of:
defining the Ethernet type in the loop detection message as a first parameter in the white board switch;
responding to a message received by a port of the switch and the Ethernet type is the first parameter, and transmitting the message to a CPU for analysis;
responding to the analyzed message that the source mac address is the address of the port and the load is the vlan number of the port, and judging that the port is short-circuited;
and enabling the short-circuited port to prevent a loop message from being generated.
2. The method of claim 1, further comprising: enabling the short-circuited port after a first threshold time interval of disabling the port.
3. The method of claim 2, wherein the first threshold time is 300 seconds.
4. The method of claim 1, wherein the loop detection message is configured to be sent once every second threshold time.
5. The method of claim 1, wherein disabling the shorted port comprises: and acquiring and modifying the switch loop disabling table item information in a statistical database to disable the port.
6. An anti-loop apparatus for a white board switch, the apparatus comprising:
at least one processor; and
a memory storing program code executable by the processor, the program code, when executed by the processor, performing the steps of:
defining the Ethernet type in the loop detection message as a first parameter in the white board switch;
responding to a message received by a port of the switch and the Ethernet type is the first parameter, and transmitting the message to a CPU for analysis;
responding to the analyzed message that the source mac address is the address of the port and the load is the vlan number of the port, and judging that the port is short-circuited;
and enabling the short-circuited port to prevent a loop message from being generated.
7. The apparatus of claim 6, wherein the program code, when executed by the processor, further performs the steps of: enabling the short-circuited port after a first threshold time interval of disabling the port.
8. The apparatus of claim 7, wherein the first threshold time is 300 seconds.
9. The apparatus of claim 6, wherein the loop detection message is configured to be sent once every second threshold time.
10. The apparatus of claim 6, wherein disabling the shorted port comprises: and acquiring and modifying the switch loop disabling table item information in a statistical database to disable the port.
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Cited By (3)
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| CN112134775A (en) * | 2020-09-25 | 2020-12-25 | 苏州浪潮智能科技有限公司 | Switch loop detection method and device |
| CN112769650A (en) * | 2021-01-11 | 2021-05-07 | 杭州锐思客技术有限公司 | Multi-VLAN loop detection method and system |
| CN114500240A (en) * | 2022-04-15 | 2022-05-13 | 北京全路通信信号研究设计院集团有限公司 | Switchboard short circuit analysis method and device based on network ring network storm flow characteristics |
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Application publication date: 20200414 |