CN112217658B - Stacking and splitting processing method and device - Google Patents
Stacking and splitting processing method and device Download PDFInfo
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- H—ELECTRICITY
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- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0654—Management of faults, events, alarms or notifications using network fault recovery
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- H04L45/00—Routing or path finding of packets in data switching networks
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Abstract
The embodiment of the application discloses a stack splitting processing method and device, which are used for reducing service interruption time in a stack splitting process, improving flow switching performance and improving user experience. First, a first stacking member device obtains a working state of an uplink service port of each stacking member device in a stacking system, wherein the uplink service port refers to a service port of each stacking member device in the stacking system connected with an upstream device, and the stacking system comprises the first stacking member device and a second stacking member device; secondly, the first stacking member device determines a target device according to the working state of an uplink service port of each stacking member device in the stacking system; finally, when the first stack member device is determined to be the target device, the first stack member device performs a port-closing operation, wherein the port-closing operation includes switching all traffic ports of the first stack member device in an active state to an inactive state.
Description
Technical Field
The embodiment of the application relates to the technical field of stacking, in particular to a stacking splitting processing method and device.
Background
The stacking system refers to a logic system obtained by constructing a plurality of devices through a stacking protocol, and appears as a logic device, wherein the plurality of devices forming the stacking system are called stacking member devices, and links connected with each other between the stacking member devices are called stacking links. If the stacking link fails, the stacking system is caused to split in a stacking way, so that the stacking member devices appear as different devices.
When the stacking link fault causes the stacking system to split, the stacking system is not one logic device but a plurality of different devices, so that the traffic entering the stacking system cannot be forwarded normally, and the traffic is interrupted. After the stack splits are completed, the traffic resumes normal forwarding.
In the current stack splitting processing mode, the time consumption of stack splitting processing is long, so that service interruption time is too long, and user experience is poor.
Disclosure of Invention
In order to solve the technical problems described above, embodiments of the present application provide a stack splitting processing method and apparatus, which are used to reduce service interruption time in a stack splitting process, improve flow switching performance, and improve user experience.
In a first aspect, an embodiment of the present application provides a stack splitting processing method, where the method is applied to a stack splitting scenario. First, a first stacking member device obtains a working state of an uplink service port of each stacking member device in a stacking system, where the uplink service port refers to a service port of each stacking member device in the stacking system connected to an upstream device, and the stacking system includes the first stacking member device and a second stacking member device. Secondly, the first stacking member device determines a target device according to the working state of an uplink service port of each stacking member device in the stacking system; finally, when the first stack member device is determined to be the target device, the first stack member device performs a port-closing operation, wherein the port-closing operation includes switching all traffic ports of the first stack member device in an active state to an inactive state. Optionally, the above-described port closing operations include, but are not limited to: error-down operation. Optionally, the above-mentioned port-closing operation may further include switching all management ports of the first stack member device in an active state to an inactive state.
According to the embodiment of the application, the target device is determined through the working state of the uplink service port of each stacking member device in the stacking system, and the port closing operation is performed on the target device, so that the service port in the working state is switched to the non-working state. Therefore, when the stacking is split, the flow entering the stacking system can be effectively prevented from entering the target equipment and being unable to be forwarded through the uplink port, so that the flow loss is reduced, the flow forwarding delay is reduced, the service interruption time in the stacking and splitting process is reduced, the flow switching performance in the stacking and splitting process is improved, and the user experience is improved.
In some possible implementations of the first aspect, the obtaining, by the first stacking member device, an operating state of an uplink service port of each stacking member device in the stacking system may specifically include: the method comprises the steps that a first stacking member device receives a dual-active detection (DAD) protocol message sent by a second stacking member device, wherein the DAD protocol message carries the working state of an uplink service port of the second stacking member device; and the first stack member device monitors the operational status of its own upstream traffic port. Optionally, the DAD protocol packet may carry the working state of the uplink service port by adopting a new field, and specifically, a part of the original reserved field may be used to carry the working state of the uplink service port. In the implementation manner, the working state of the uplink service port of the second stacking member device is obtained by adopting the mode that the DAD protocol message carries information, and the working state of the uplink service port can be accurately and timely obtained, so that the accuracy of judging the target device can be improved by adopting the mode that the DAD protocol message carries information, the purposes of reducing the service interruption time in the stacking and splitting process, improving the flow switching performance in the stacking and splitting process and improving the user experience are realized.
In some possible implementations of the first aspect, the method may further include: when the stacking system is in stacking split, the first stacking member device switches the transmission mode of the DAD protocol message to a fast message transmission mode. Typically, in the stacking system, the DAD protocol packet is sent periodically, and optionally, switching the sending mode of the DAD protocol packet to the fast packet sending mode may specifically include switching the sending period of the DAD protocol packet from 1s to 100ms. In this possible implementation manner, by triggering the fast messaging mode to send the DAD protocol message, the DAD protocol message sending at the millisecond level can be triggered, so as to improve the processing speed of stack splitting.
In some possible implementations of the first aspect, the DAD protocol packet may further carry a fault flag, where the fault flag is used to indicate whether the second stack member device is marked as a faulty device. Similar to the working state of the uplink service port carried in the DAD protocol packet, a portion of the reserved field may be used to carry the fault flag. In this possible implementation manner, by adding a fault flag in the DAD protocol packet, the fault flag may be used to perform dual-main detection determination, so as to increase the processing speed of stack splitting.
In some possible implementations of the first aspect, the first stack member device takes a stack member device with all uplink traffic ports in an inactive state as the target device; if there are no stack member devices with all uplink traffic ports in an inactive state, the first stack member device sequentially compares the stack priorities and the media access control (media access control, MAC) addresses of all stack member devices until a target device is determined, specifically: when there is no stacking member device with all uplink service ports in a non-working state, comparing stacking priorities of all stacking member devices, and determining the stacking member device with lower stacking priority as a target device; and when the stacking priorities of all the stacking member devices are the same, comparing the MAC addresses of all the stacking member devices, and determining the target device according to the comparison result. For example, a stack member device with a larger or smaller MAC address may be determined as the target device. It should be appreciated that different stack member devices have different MAC addresses, and thus the target device may be determined by the scheme described above. In this possible implementation manner, by sequentially determining the target device through the working state of the uplink service port, the stacking priority and the MAC address, it is possible to quickly and accurately determine the target device, and perform the port-closing process on the target device.
In some possible implementations of the first aspect, when the second stack member device fails and an uplink traffic port of the first stack member device is in an operational state, the first stack member device performs a port recovery operation; or when the first stacking member device does not receive the DAD protocol message sent by the second stacking member device beyond the preset time, the first stacking member device executes a port recovery operation, where the port recovery operation includes switching all service ports in the first stacking member device that are in a non-working state to a working state. Optionally, the port recovery operation further includes: and switching all the management ports in the non-working state in the first stacking member device to the working state. In this possible implementation manner, the fault recovery processing of the first stack member device may be quickly implemented after the fault is relieved.
In some possible implementations of the first aspect, the above-mentioned port-closing operation may specifically include: preferentially closing a downlink service port in a working state in first stacking member equipment to trigger downstream equipment connected with the first stacking member equipment to switch service flow; after the downlink service ports in the working state are closed, the other service ports are closed. In the possible implementation manner, by closing the downlink service port in the working state preferentially, the downstream equipment can switch the service flow in advance, so that unnecessary flow forwarding delay caused by the flow entering the target equipment through the downstream service port in the working state is avoided.
In some possible implementations of the first aspect, the method further includes: when a first downlink service port of a first stacking member device is in a non-working state, the first stacking member device refreshes Address Resolution Protocol (ARP) table entry information of the first downlink service port to a second downlink service port, wherein the second downlink service port is a backup port of the first downlink service port. In the possible implementation manner, by refreshing the ARP entry information of the service port in the non-working state to the corresponding backup port, the service traffic can be quickly switched to the backup port to be sent to other stack member devices, and the traffic is forwarded by using the other stack member devices under the condition that the service port fails and cannot work normally. Therefore, when the service port is failed or closed, the forwarding delay of the service flow can be reduced, the flow switching performance is improved, and the user experience is improved.
In a second aspect, an embodiment of the present application provides a stack splitting processing apparatus, including: a processing module for performing the following operations: acquiring the working state of an uplink service port of each stacking member device in the stacking system, wherein the uplink service port is a service port of each stacking member device connected with upstream devices, and the stacking system comprises the first stacking member device and the second stacking member device; determining target equipment according to the working state of the uplink service port of each stacking member equipment; and when the first stacking member device is the target device, executing a port closing operation, wherein the port closing operation comprises the step of switching all service ports of the first stacking member device in an operating state into a non-operating state.
The constituent modules of the stack splitting processing apparatus may further perform the steps described in the various possible implementations of the first aspect, which are described in detail in the foregoing description of the first aspect and the various possible implementations, and are not repeated herein.
In a third aspect, embodiments of the present application provide a computer-readable storage medium having instructions stored therein, which when run on a computer, cause the computer to perform the method of the first aspect described above.
In a fourth aspect, embodiments of the present application provide a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of the first aspect described above.
In a fifth aspect, embodiments of the present application provide a stack splitting processing apparatus, which may include: a processor, a memory; the memory is used for storing instructions; the processor is configured to execute the instructions in the memory to cause the stack split processing device to perform the method according to the first aspect described above. The device may be a switch or a chip.
In a sixth aspect, the present application provides a chip system comprising a processor for supporting a switch to implement the functions referred to in the first aspect above, e.g. to send or process data and/or information referred to in the method above. In one possible design, the system on a chip also includes memory to hold the necessary program instructions and data. The chip system can be composed of chips, and can also comprise chips and other discrete devices.
Drawings
Fig. 1 is a schematic view of an application scenario in an embodiment of the present application;
FIG. 2 is a schematic flow chart of a stack splitting method according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of a stacking splitting device according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of another stacking splitting device according to an embodiment of the present disclosure.
Detailed Description
The embodiment of the application provides a stack splitting processing method and device, which are used for reducing service interruption time in a stack splitting process, improving flow switching performance and improving user experience.
Embodiments of the present application will be described below with reference to the accompanying drawings.
The terms first, second and the like in the description and in the claims of the present application and in the above-described figures, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances and are merely illustrative of the manner in which the embodiments of the application described herein have been described for objects of the same nature. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of elements is not necessarily limited to those elements, but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
In order to facilitate understanding of the stack splitting processing method in the embodiment of the present application, the following first explains the basic concepts involved in the present application:
1. stacking system
The stacking system is a logic system formed by two or more devices of the same type (in this application, a switch is taken as an example) through a stacking protocol, and specifically, a plurality of switches are connected through a dedicated stacking cable to be externally presented as a logic switch. The switches forming the stacking system are called stacking member devices, wherein stacking competition messages are sent among the stacking member devices, and a stacking system main switch is selected according to a selection principle; after the primary switch elects, the primary switch collects the information of all the stacking member devices and calculates the topology information of the stacking system, and then the primary switch synchronizes the topology information of the stacking system to all the stacking member devices and elects the standby switch of the stacking system.
2. Stack splitting
Stack splitting refers to shifting out part of member switches with electricity in a stably operating stack system, or, stack cable (stack link) failure causes one stack system to become a plurality of stack systems. Typically, a plurality of primary stack member devices are present in the stack system upon stack disruption, and when the presence of the plurality of primary stack member devices is monitored, it may be determined that the stack system is subject to stack disruption. Detection of stack splitting is typically achieved using dual-active detection (DAD). In the stacking and splitting process, conflict can occur, so that traffic cannot be forwarded normally, and certain influence is caused on the service.
3. Dual master detection
The dual-master detection DAD protocol is a protocol for detecting and processing stack splitting, and can realize the detection, conflict processing and fault recovery of stack splitting, and reduce the influence of stack splitting on service. The ethernet link aggregation Eth-Trunk interface proxy detection mode is one of the modes of dual-master detection, that is, by performing dual-master detection on a cross-device Eth-Trunk link where a stacking system is connected to a proxy device, in this detection mode, the proxy device needs to configure and start a DAD proxy function. The Eth-Trunk interface may run DAD proxy detection and other traffic forwarding functions simultaneously. In the normal operation process of the stacking system, the main stacking member device sends a DAD message to the standby stacking member device through the Eth-Trunk link, wherein the DAD message carries the address information of the main stacking member device, and the standby stacking member device does not send the DAD message; if the stack split occurs, the backup stack member device becomes the primary stack member device, and if the Eth-Trunk link does not fail, the backup stack member device sends a DAD message to the primary stack member device. Thus, if the master stack member device in the stack system receives the DAD message, it can determine that the stack system has a stack split. The Eth-Trunk link is an aggregation link, and specifically, the Eth-Trunk link is obtained by aggregating different links through a link aggregation technology. link aggregation techniques can configure physical ethernet ports on different member switches as one aggregate port. The physical port of the Eth-Trunk link connected with the member switch is the Eth-Trunk interface.
The technical scheme is suitable for a stacking system, and is particularly suitable for a cross-equipment system which is built by a cross-equipment link aggregation group (multichassis link aggregation group, M-LAG) technology of a core switch in a cross-data center networking.
Fig. 1 is a schematic view of an application scenario in an embodiment of the present application, as shown in fig. 1, where the present application may be applied in a scenario of cross-data center networking. Fig. 1 includes a data center 1 and a data center 2. In the data center 1, the server 1 and the server 2 are connected in dual-home to the access switches SW5 and SW6, respectively, and the access switches SW5 and SW6 are connected in dual-home to the core switches SW1 and SW2. In the data center 2, the server 3 connects access switches SW7 and SW8 in dual-home, and the access switches SW7 and SW8 connect core switches SW3 and SW4 in dual-home. Core switch SW1 connects SW4 and core switch SW2 connects SW3 to enable communication across data centers.
In fig. 1, the core switches SW1 and SW2 form a stacking system through a stacking protocol, which is externally presented as a logical switch, and the physical ethernet interface of the core switch SW1 and the physical ethernet interface of the core switch SW2 are configured into an aggregation port by using the M-LAG technology, where the aggregation ports are respectively shown as two circles in the left half part of fig. 1, and one circle indicates one aggregation port. The core switches SW3 and SW4 form a stacking system through stacking protocols, the outside is presented as a logic switch, the physical Ethernet interface of the core switch SW3 and the physical Ethernet interface of the core switch SW4 are also configured into an aggregation port through an M-LAG technology, the aggregation ports are respectively shown as two circles on the right half part in the figure 1, and one circle is used for indicating one aggregation port; the logical switches formed by core switches SW1 and SW2 and the logical switches formed by core switches SW3 and SW4 are also configured as an aggregate port using the M-LAG technique, and the aggregate port is shown as a circle in the middle part of fig. 1.
It should be noted that, the servers shown in fig. 1 are respectively connected to two access switches, and the two access switches may be respectively connected to the main network card and the standby network card in the server.
The stack splitting processing method in the embodiment of the application can be particularly used in a stack system formed by core switches in the two data centers, so that when stack splitting occurs in the stack system, stack splitting conflict can be detected and processed quickly, and faults are recovered.
Fig. 2 is a flow chart of a stack splitting processing method in an embodiment of the application.
As shown in fig. 2, the stack splitting processing method in the embodiment of the present application includes:
201. the first stacking member device obtains the working state of the uplink service port of each stacking member device in the stacking system.
The stacking system comprises a first stacking member device and a second stacking member device. The first stacking member device not only needs to obtain the working state of its own uplink service port, but also obtains the working state information of the uplink service port of the second stacking member device. The upstream service port refers to a service port of each stacking member device in the stacking system connected to the upstream device, in other words, the upstream service port includes a service port of the first stacking member device and the second stacking member device connected to the upstream device.
In connection with fig. 1, the stacking system in the embodiment of the present application may be a stacking system formed by the core switches SW1 and SW2 in the data center 1. The first stack member device may be a core switch SW1 or SW2, and if the first stack member device is the core switch SW1, the second stack member device is the core switch SW2; if the first stack member device is core switch SW2, the second stack member device is core switch SW1. At this time, the upstream devices may be the core switches SW3 and SW4.
Similarly, the stacking system in the embodiment of the present application may also be a stacking system composed of the core switches SW3 and SW4 in the data center 2 described above. The first stack member device may be a core switch SW3 or SW4, and if the first stack member device is a core switch SW3, the second stack member device is a core switch SW4; if the first stack member device is core switch SW4, the second stack member device is core switch SW3. At this time, the upstream devices may be the core switches SW1 and SW2.
The uplink traffic interfaces are interfaces between the core switches SW1 and SW4 and the core switches SW2 and SW3.
In some embodiments of the present application, the specific manner in which the first stacking member device obtains the working status of the uplink service port of each stacking member device in the stacking system may be: the first stacking member device monitors the working state of its own uplink service port, optionally, the monitoring can be in a real-time monitoring mode; and the first stacking member device receives a DAD protocol message sent by the second stacking member device, wherein the DAD protocol message carries the working state of an uplink service port of the second stacking member device. Specifically, the reserved field of the existing DAD protocol packet may be extended to indicate the working state of the uplink service port, for example, the extended ucuplink type field indicates the working state of the uplink service port of the present segment of device, the size of the ucuplink type field may be 1 byte, if the ucuplink type field is 1, it indicates that the uplink service port in the working state exists, and if the ucuplink type field is 2, it indicates that the uplink service port in the working state does not exist. It should be noted that, the implementation manner of the working state of the uplink service port carried in the DAD protocol packet includes, but is not limited to, the implementation manner described above, and may also be other implementation manners with similar functions, which are not limited in any way.
In some embodiments of the present application, the DAD protocol packet may further carry a fault flag, where the fault flag is used to indicate whether the second stack member device is already marked as a faulty device. In particular, the reserved field of the existing DAD protocol message may also be extended to indicate whether the stack member device has been marked as a failed device, or alternatively, whether the stack member device has been marked as failed. For example, the ucErrdownFlag field is extended to indicate whether the device is currently marked as a failed device, the ucErrdownFlag field may be 1 byte in size, and if the ucErrdownFlag field is 1, then the current status of the local device is indicated as a failed device; if the ucErrorrdownFlag field is 0, then this indicates that the home device is not currently marked as a failed device. It should also be noted that the implementation manner of carrying the fault flag in the DAD protocol packet includes, but is not limited to, the implementation manner described above, and may also be other implementation manners with similar functions, which are not limited in this application.
In some embodiments of the present application, when a stacking system breaks a stack, the first stack member device switches a transmission mode of the DAD protocol packet to a fast packet transmission mode. The fast message sending mode refers to a sending mode that the sending frequency is larger than that of the stacking system in steady state operation. In the existing DAD protocol, the message is sent periodically, and the sending period is generally 1 second (S). Taking the example that the sending period of the DAD protocol message is 1S, in the embodiment of the present application, if the stacking system is in a steady state operation process, the first stacking member device sends the DAD protocol message once every 1S; if the stacking system generates stacking split, the first stacking member device switches from sending the DAD protocol message every 1S to sending the DAD protocol message every 100 Milliseconds (MS). It should be noted that the DAD protocol packet may include, but is not limited to, the new packet carrying the working status and/or the fault flag of the uplink service port, which is not limited in this application.
202. The first stack member device determines a target device according to the operating state of the uplink traffic port of each stack member device.
The first stacking member device determines whether the corresponding stacking member device is a target device according to the working state of the uplink service port of each stacking member device in the stacking system, and the target device may include the stacking member device needing fault isolation. Taking the stacking system as an example, the stacking system includes a first stacking member device and a second stacking member device, the first stacking member device determines whether the first stacking member device is a target device according to the working state of its own uplink service port, and the first stacking member device determines whether the second stacking member device is a target device according to the working state of the uplink service port of the second stacking member device.
In some embodiments of the present application, determining the target device according to the working status of the uplink service port of each stack member device in the stacking system may specifically include, but is not limited to, the following implementation manners: the first stack member device sequentially performs the following steps until the target device is determined:
1) If the stacking member equipment with all the uplink service ports in the non-working state exists, the first stacking member equipment takes the stacking member equipment with all the uplink service ports in the non-working state as target equipment;
2) If no stacking member device with all uplink service ports in a non-working state exists, the first stacking member device compares the stacking priorities of all stacking member devices, and determines the stacking member device with the lower stacking priority as a target device;
3) And if the stacking priorities of all the stacking member devices are the same, the first stacking member device compares the MAC addresses of all the stacking member devices and determines the target device according to the comparison result. For example, a stack member device with a larger or smaller MAC address may be determined as the target device.
It should be appreciated that different stack member devices have different MAC addresses, and thus, the target device may ultimately be determined through the scheme described above.
203. When the first stack member device is the target device, the first stack member device performs a port-closing operation.
In the above step 202, if the first stacking member device determines that the first stacking member device is the target device, the first stacking member device needs to perform fault isolation, i.e. the first stacking member device performs a port closing operation to close all ports except the reserved port in the first stacking member device. The above-mentioned port-closing operation may include switching all the service ports of the first stack member device in the active state to the inactive state, and the port-closing operation may further include switching all the management ports of the first stack member device in the active state to the inactive state, where both the management ports and the service ports are unreserved ports. In addition, the first stack member device may perform a port-closing operation on the service port and/or the management port in the first stack member device that is in the inactive state. Optionally, the above-mentioned port closing operation may specifically include, but is not limited to: error-down operation. Error-down is a protection mechanism for protecting a switch, and when the switch detects that an abnormality occurs in a port, the port is down and marked as an Error-down state, in which the port cannot be used continuously.
If the first stack member device is determined to be the target device, the first stack member device will be marked as a failed device. Specifically, if the first stack member device is determined to be the target device, the ucerror wnflag field in the DAD protocol message of the first stack member device will be set to 1 to indicate that the first stack member device is currently marked as a failed device, as described in step 201 above.
In some embodiments of the present application, if the first stack member device is the target device, the port closing operation may specifically be: and preferentially closing the downlink service port in the working state in the first stacking member device to trigger the downstream device connected with the first stacking member device to switch the service flow. And for the closed port operation to be the Error-down operation, preferentially executing the Error-down operation on the downlink service port in the working state in the first stacking member device, and further executing the Error-down operation on the unreserved ports such as the downlink service port in the non-working state in the first stacking member device.
In connection with fig. 1 described above, the downstream device may specifically include: access switches SW5, SW6, SW7 and SW8, and servers 1, 2 and 3. Specifically, when the stacking system is the stacking system composed of the core switches SW1 and SW2 in the data center 1 described above, the corresponding downstream devices may be the access server 1, the server 2, the switches SW5 and SW6; when the stacking system is the stacking system composed of the core switches SW3 and SW4 in the data center 2 described above, the corresponding downstream devices may be the access server 3, the switches SW7 and SW8.
Optionally, 204, the first stack member device performs a port recovery operation.
In some embodiments of the present application, performing a port recovery operation by the first stack member device may include: and when the second stacking member device fails and the uplink service port of the first stacking member device is in a working state, the first stacking member device executes a port recovery operation.
In some embodiments of the present application, performing, by the first stack member device, a port recovery operation may also include: and when the first stacking member device does not receive the DAD protocol message sent by the second stacking member device after the preset time, the first stacking member device executes the port recovery operation.
Optionally, the above-mentioned port recovery operation includes switching all service ports in the first stack member device that are in the inactive state to the active state. Optionally, the port recovery operation further includes: and switching all the management ports in the non-working state in the first stacking member device to the working state.
Optionally, 205, when the first downstream service port of the first stacking member device is in a non-working state, the first stacking member device refreshes address resolution protocol ARP entry information of the first downstream service port to the second downstream service port.
The second downlink service port is a backup port of the first downlink service port, or the first downlink service port and the second downlink service port are backup ports. The ARP list item information of the service port in the non-working state is refreshed to the corresponding backup port without consuming time depending on subsequent service flow, so that the service flow can be rapidly switched to the backup port to be sent to other stacking member devices under the condition that the service port fails and cannot work normally, and the flow is forwarded by the other stacking member devices. Therefore, when the service port is failed or closed, the forwarding delay of the service flow can be reduced, the flow switching performance is improved, and the user experience is improved.
With reference to fig. 1, if the stacking system described in the embodiment of the present application is a stacking system formed by the core switches SW1 and SW2 in the data center 1 and the first stacking member device is the core switch SW1, the interfaces between the core switch SW1 and the access switches SW5 and SW6 are downlink service interfaces, and the interfaces between the core switches SW1 and SW5 and the interfaces between the core switches SW1 and SW6 may be backup ports, where one is the first downlink service interface and the other is the second downlink service interface. In the case that the stacking system described in the embodiment of the present application is the stacking system formed by the core switches SW3 and SW4 in the data center 2, the first downstream service port and the second downstream service port are similar to those described in the data center 1, and the detailed description thereof may refer to the corresponding related description when the stacking system is located in the data center 1, which is not repeated herein.
In the embodiment of the application, the first stacking member device acquires and determines the target device through the working state of the uplink service port of each stacking member device in the stacking system, and performs the port closing operation on the target device, so that the service port in the working state is switched to the non-working state. Therefore, when the stacking is split, the flow entering the stacking system can be effectively prevented from entering the target equipment and being unable to be forwarded through the uplink port, so that the flow loss is reduced, the flow forwarding delay is reduced, the service interruption time in the stacking and splitting process is reduced, the flow switching performance in the stacking and splitting process is improved, and the user experience is improved.
It should be noted that, for simplicity of description, the foregoing method embodiments are all expressed as a series of action combinations, but it should be understood by those skilled in the art that the present application is not limited by the order of actions described, as some steps may be performed in other order or simultaneously in accordance with the present application. Further, those skilled in the art should also appreciate that the acts and modules described in the embodiments described in the specification are not necessarily required in the present application.
In order to facilitate better implementation of the above-described aspects of the embodiments of the present application, the following further provides related devices for implementing the above-described aspects.
Fig. 3 is a schematic structural diagram of a stacking and splitting device according to an embodiment of the present application.
The stack splitting handling apparatus 300 includes: a processing module 301; the processing module 301 is configured to perform the following operations: acquiring the working state of an uplink service port of each stacking member device in the stacking system, wherein the uplink service port is a service port of each stacking member device connected with upstream devices, and the stacking system comprises the first stacking member device and the second stacking member device; determining target equipment according to the working state of the uplink service port of each stacking member equipment; and when the first stacking member device is the target device, executing a port closing operation, wherein the port closing operation comprises the step of switching all service ports of the first stacking member device in an operating state into a non-operating state.
In some embodiments of the present application, the processing module 301 is specifically configured to: receiving a dual-master detection DAD protocol message sent by the second stacking member device, wherein the DAD protocol message carries the working state of an uplink service port of the second stacking member device; and monitoring the working state of an uplink service port of the first stacking member device.
In some embodiments of the present application, the processing module 301 is further configured to: and when the stacking system generates stacking splitting, switching the sending mode of the DAD protocol message to a fast message sending mode.
In some embodiments of the present application, the DAD protocol packet further carries a fault flag, where the fault flag is used to indicate whether the second stack member device has been marked as a faulty device.
In some embodiments of the present application, the processing module 301 is specifically configured to: taking stacking member equipment with all uplink service ports in a non-working state as the target equipment; when there is no stacking member device with all uplink service ports in a non-working state, comparing stacking priorities of all stacking member devices, and determining the stacking member device with lower stacking priority as the target device; and when the stacking priorities of all the stacking member devices are the same, comparing the Media Access Control (MAC) addresses of all the stacking member devices, and determining the target device according to the comparison result. For example, the processing module 301 may determine a stack member device with a larger or smaller MAC address as the target device.
In some embodiments of the present application, the processing module 301 is further configured to: when the second stacking member device fails and the uplink service port of the first stacking member device is in a working state, executing a port recovery operation; or when the first stacking member device does not receive the DAD protocol message sent by the second stacking member device in the preset time, executing the port recovery operation.
In some embodiments of the present application, the port recovery operation includes switching all service ports in the first stack member device that are in the inactive state to the active state. Optionally, the port recovery operation further includes: and switching all the management ports in the non-working state in the first stacking member device to the working state.
In some embodiments of the present application, the processing module 301 is specifically configured to: and preferentially closing a downlink service port in a working state in the first stacking member device so as to trigger a downstream device connected with the first stacking member device to switch service traffic.
In some embodiments of the present application, the processing module 301 is further configured to: and refreshing Address Resolution Protocol (ARP) table entry information of the first downlink service port to a second downlink service port when the first downlink service port of the first stack member device is in a non-working state, wherein the second downlink service port is a backup port of the first downlink service port.
It should be noted that, all the steps and operations performed by the first stack member device in the above method embodiment may be introduced into the processing module 301 for execution. The advantages obtained by the stack splitting device 30 in this embodiment are similar to those described in the above method embodiment, and the detailed description thereof may refer to the description of the relevant parts in the above method embodiment, which is not repeated here.
It should be further noted that, because the content of information interaction and execution process between the modules/units of the above-mentioned apparatus is based on the same concept as the method embodiment of the present application, the technical effects brought by the content are the same as the method embodiment of the present application, and specific content can be referred to the description in the method embodiment shown in the foregoing application, which is not repeated herein.
The embodiment of the application also provides a computer storage medium, wherein the computer storage medium stores a program, and the program executes part or all of the steps described in the embodiment of the method.
Fig. 4 is a schematic structural diagram of another stacking splitting device according to an embodiment of the present application.
The stack splitting processing apparatus 400 includes: processor 401, memory 402, and bus system 405, wherein the number of processors 401 in stacked split processing apparatus 400 may be one or more, one processor being exemplified in fig. 4; a bus system is used to connect the processor 401 and the memory 402. In some embodiments of the present application, the stack splitting processing apparatus 400 may further include: a first communication interface 403, a second communication interface 404; wherein the first communication interface 403, the second communication interface 404, the processor 401 and the memory 402 may be connected by a bus or other means, wherein in fig. 4 a connection by a bus is exemplified.
Memory 402 may include read only memory and random access memory and provides instructions and data to processor 401. A portion of the memory 402 may also include non-volatile random access memory (non-volatile random access memory, NVRAM). The memory 402 stores an operating system and operating instructions, executable modules or data structures, or a subset thereof, or an extended set thereof, where the operating instructions may include various operating instructions for performing various operations. The operating system may include various system programs for implementing various underlying services and handling hardware-based tasks.
The processor 401 controls the operation of the stack splitting processing device 400, the processor 401 may also be referred to as a central processing unit (central processing unit, CPU). In a specific application, the various components of the stack splitting processing device 400 are coupled together by a bus system that may include a power bus, a control bus, a status signal bus, and the like, in addition to a data bus. For clarity of illustration, however, the various buses are referred to in the figures as bus system 405.
The method disclosed in the embodiments of the present application may be applied to the processor 401 or implemented by the processor 401. The processor 401 may be an integrated circuit chip having signal processing capability. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware in the processor 401 or by instructions in the form of software. The processor 401 described above may be a general purpose processor, a digital signal processor (digital signal processor, DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (field-programmable gate array) or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component. The general purpose processor may be a microprocessor or any conventional processor. The steps of the method disclosed in the embodiments of the present application may be directly performed by a hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory 402, and the processor 401 reads the information in the memory 402 and, in combination with its hardware, performs the steps of the above method.
The first communication interface 403 and the second communication interface 404 may each be used to receive and/or transmit digital or character information and to input and/or output signals related to the relevant settings and function control of the stack split processing device 400.
In this embodiment, the processor 401 is configured to perform all the operations performed by the first stack member device in the foregoing method embodiment.
The stack splitting processing device in the embodiment of the application may also be a switch or a chip. When the stack splitting handling device is a chip, the chip comprises: a processing unit, which may be, for example, a processor, and a communication unit, which may be, for example, an input/output interface, pins or circuitry, etc. The processing unit may execute the computer-executable instructions stored in the storage unit to cause the chip in the terminal to perform the stack splitting processing method of any one of the above-described first aspects. Alternatively, the storage unit is a storage unit in the chip, such as a register, a cache, or the like, and the storage unit may also be a storage unit in the terminal located outside the chip, such as a read-only memory (ROM) or other type of static storage device that may store static information and instructions, a random access memory (random access memory, RAM), or the like.
It should be further noted that the above-described apparatus embodiments are merely illustrative, and that the units described as separate units may or may not be physically separate, and that units shown as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. In addition, in the drawings of the embodiment of the device provided by the application, the connection relation between the modules represents that the modules have communication connection therebetween, and can be specifically implemented as one or more communication buses or signal lines.
From the above description of the embodiments, it will be apparent to those skilled in the art that the present application may be implemented by means of software plus necessary general purpose hardware, or of course may be implemented by dedicated hardware including application specific integrated circuits, dedicated CPUs, dedicated memories, dedicated components and the like. Generally, functions performed by computer programs can be easily implemented by corresponding hardware, and specific hardware structures for implementing the same functions can be varied, such as analog circuits, digital circuits, or dedicated circuits. However, a software program implementation is a preferred embodiment in many cases for the present application. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a readable storage medium, such as a floppy disk, a usb disk, a removable hard disk, a ROM, a RAM, a magnetic disk or an optical disk of a computer, etc., including several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to perform the method described in the embodiments of the present application.
In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product.
The computer program product includes one or more computer instructions. When loaded and executed on a computer, produces a flow or function in accordance with embodiments of the present application, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be stored by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a Solid State Disk (SSD)), or the like.
Claims (17)
1. The stack splitting processing method is characterized by being applied to a scene of stack splitting, and comprises the following steps:
the method comprises the steps that a first stacking member device obtains the working state of an uplink service port of each stacking member device in a stacking system, wherein the uplink service port is a service port of each stacking member device connected with upstream devices, and the stacking system comprises the first stacking member device and a second stacking member device;
the first stacking member device determines a target device according to the working state of the uplink service port of each stacking member device; the target device comprises a stacking member device requiring fault isolation;
when the first stacking member device is the target device, the first stacking member device executes a port closing operation, wherein the port closing operation comprises the step of switching all service ports of the first stacking member device in a working state to a non-working state;
and when the second stacking member device fails and the uplink service port of the first stacking member device is in a working state, the first stacking member device executes a port recovery operation.
2. The method of claim 1, wherein the obtaining the operating status of the upstream service port of each stack member device in the stack system comprises:
Receiving a dual-master detection DAD protocol message sent by the second stacking member device, wherein the DAD protocol message carries the working state of an uplink service port of the second stacking member device; the method comprises the steps of,
and monitoring the working state of an uplink service port of the first stacking member device.
3. The method according to claim 2, wherein the method further comprises:
when the stacking system generates stacking split, the first stacking member device switches the sending mode of the DAD protocol message to a fast message sending mode.
4. A method according to claim 2 or 3, wherein the DAD protocol message further carries a fault flag indicating whether the second stack member device has been marked as a faulty device.
5. A method according to any one of claims 1-3, wherein said determining a target device according to the operational status of the upstream traffic port of each stack member device comprises:
taking stacking member equipment with all uplink service ports in a non-working state as the target equipment;
when there is no stacking member device with all uplink service ports in a non-working state, comparing stacking priorities of all stacking member devices, and determining the stacking member device with lower stacking priority as the target device;
And when the stacking priorities of all the stacking member devices are the same, comparing the Media Access Control (MAC) addresses of all the stacking member devices, and determining the target device according to the comparison result.
6. A method according to any one of claims 2-3, characterized in that the method further comprises:
and when the first stacking member device does not receive the DAD protocol message sent by the second stacking member device in the preset time, the first stacking member device executes a port recovery operation.
7. A method according to any one of claims 1 to 3, wherein the port-closing operation comprises:
and preferentially closing a downlink service port in a working state in the first stacking member device so as to trigger a downstream device connected with the first stacking member device to switch service traffic.
8. A method according to any one of claims 1 to 3, further comprising:
when a first downlink service port of the first stacking member device is in a non-working state, the first stacking member device refreshes Address Resolution Protocol (ARP) table entry information of the first downlink service port to a second downlink service port, wherein the second downlink service port is a backup port of the first downlink service port.
9. A stack disruption processing device, comprising:
a processing module for performing the following operations:
acquiring the working state of an uplink service port of each stacking member device in a stacking system, wherein the uplink service port is a service port of each stacking member device connected with upstream devices, and the stacking system comprises a first stacking member device and a second stacking member device;
determining target equipment according to the working state of the uplink service port of each stacking member equipment; the target device comprises a stacking member device requiring fault isolation;
when the first stacking member device is the target device, executing a port closing operation, wherein the port closing operation comprises the step of switching all service ports of the first stacking member device in a working state into a non-working state;
the processing module is further configured to:
and when the second stacking member device fails and the uplink service port of the first stacking member device is in a working state, executing a port recovery operation.
10. The apparatus of claim 9, wherein the processing module is specifically configured to:
Receiving a dual-master detection DAD protocol message sent by the second stacking member device, wherein the DAD protocol message carries the working state of an uplink service port of the second stacking member device; the method comprises the steps of,
and monitoring the working state of an uplink service port of the first stacking member device.
11. The apparatus of claim 10, wherein the processing module is further configured to:
and when the stacking system generates stacking splitting, switching the sending mode of the DAD protocol message to a fast message sending mode.
12. The apparatus according to claim 10 or 11, wherein a fault flag is further carried in the DAD protocol message, the fault flag being used to indicate whether the second stack member device has been marked as a faulty device.
13. The apparatus according to any one of claims 9-11, wherein the processing module is specifically configured to:
taking stacking member equipment with all uplink service ports in a non-working state as the target equipment;
when there is no stacking member device with all uplink service ports in a non-working state, comparing stacking priorities of all stacking member devices, and determining the stacking member device with lower stacking priority as the target device;
And when the stacking priorities of all the stacking member devices are the same, comparing the Media Access Control (MAC) addresses of all the stacking member devices, and determining the target device according to the comparison result.
14. The apparatus of any one of claims 10-11, wherein the processing module is further configured to:
and when the first stacking member device does not receive the DAD protocol message sent by the second stacking member device in the preset time, executing port recovery operation.
15. The apparatus according to any one of claims 9-11, wherein the processing module is specifically configured to:
and preferentially closing a downlink service port in a working state in the first stacking member device so as to trigger a downstream device connected with the first stacking member device to switch service traffic.
16. The apparatus of any one of claims 9-11, wherein the processing module is further configured to:
and refreshing Address Resolution Protocol (ARP) table entry information of the first downlink service port to a second downlink service port when the first downlink service port of the first stack member device is in a non-working state, wherein the second downlink service port is a backup port of the first downlink service port.
17. A stack disruption processing device, comprising:
a processor and a memory for storing instructions;
the processor is configured to perform the method of any of the preceding claims 1 to 8 by invoking the instructions.
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| CN115396385B (en) * | 2021-05-19 | 2023-07-21 | 中国移动通信集团浙江有限公司 | Method and device for quickly recovering service of stack switch and computing equipment |
| CN116016385A (en) * | 2021-10-21 | 2023-04-25 | 华为技术有限公司 | State synchronization method, device and equipment |
| CN115102897B (en) * | 2022-06-06 | 2024-01-05 | 上海华信长安网络科技有限公司 | Stacking splitting protection method based on link aggregation |
| CN117278387A (en) * | 2022-06-13 | 2023-12-22 | 中兴通讯股份有限公司 | Fault processing method, network element and storage medium |
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