CN115396385B - Method, device and computing equipment for quick service recovery of stacked switches - Google Patents

Abstract

The embodiment of the present invention relates to the field of communication technologies, and discloses a method, device, and computing device for quickly restoring services of a stack switch. The method includes: when the stack switch splits, a control module disposed in the stack switch determines the working mode of the stack switch; the control module obtains the service blocking situation of the stack switch according to the working mode of the stack switch; and obtains an optimal solution of the current service by applying an optimal protection algorithm to the control module according to the service blocking situation. Through the above method, the embodiment of the present invention can avoid the risk that the service port of the standby machine is automatically killed after the stack switch is split, and the service loop is blocked due to the dual-master or multi-master phenomenon of the switch after the split.

Description

Method, device and computing equipment for quick service recovery of stacked switches

technical field

The embodiments of the present invention relate to the technical field of communication, and in particular to a method, device and computing equipment for quickly restoring services of a stack switch.

Background technique

With the rapid development of large-bandwidth services in the Internet era, stacked switches are usually used to meet the port quantity requirements of large-scale networks. A stack switch is a management domain composed of Ethernet switches connected through stack ports, including a master switch and several slave switches. Both the master switch and the slave switches are stack members of the stack switch. Stacked Ethernet switches can be regarded as a device, and users can manage all switches in the stacked switch through the main switch. At the same time, once the master switch fails, the stacking system will re-elect a new master device according to the priority of each slave switch, so as to ensure that the running services of the system will not be interrupted.

When the slave switch leaves/joins the stack ring of the stack switch, packets will be lost for a short time, and the slave switch cannot seamlessly leave/join the stack switch. The existing solutions are to restore the stack reorganization after the link is restored or to use soft separation after splitting to minimize the impact on other standby machines to declare split control services. When stacking lines and heartbeat lines are interrupted, it is often accompanied by large-scale failures of transmission equipment or lines. At the same time, batch interruptions of uplinks or downlinks of switches will occur. Triggering switch stack splits at this time will completely interrupt services or cause loop risks in some services. At present, there is no technical method for automatic judgment and automatic control of service links to realize the optimal solution for service protection in which switch stacks are split and the uplink and downlink links are interrupted in batches.

Contents of the invention

In view of the above problems, embodiments of the present invention provide a method, device, and computing device for quickly restoring services of a stack switch, which overcome the above problems or at least partially solve the above problems.

According to an aspect of an embodiment of the present invention, a method for quickly restoring services of a stacked switch is provided, the method comprising: when the stacked switch splits, a control module disposed in the stacked switch determines the working mode of the stacked switch; the control module obtains a service blocking situation of the stacked switch according to the working mode of the stacked switch; according to the service blocked situation, the control module applies an optimal protection algorithm to obtain an optimal solution of the current service.

In an optional manner, before the splitting of the stack switch, it includes: setting a control module in the stack switch, the stack switch including at least one master switch and one slave switch; before the switches form a stack, configure the uplink of the stack switch; automatically calculate all ports of the downlink of the stack switch according to the uplink port, the stack interconnection port and the heartbeat interconnection port through the control module.

In an optional manner, the determining the working mode of the stack switch through the control module arranged in the stack switch includes: judging by the control module whether the stack switch is in multi-master mode or master-slave mode after the stack switch splits according to the interruption of the stack line and the heartbeat line in the stack switch.

In an optional manner, the reading of the service blocking situation of the stack switch by the control module according to the working mode of the stack switch includes: if the stack switch is in the slave mode, determining the impact on services after all links of the slave switches are closed; if the stack switch is in the multi-master mode, determining that the stack switch will experience packet loss or loops on service links.

In an optional manner, if the stacked switch is in the multi-master mode, determining the impact on the business after all the links of the slave switches are closed includes: if the stacked switch is in the slave mode, reading the link status of each switch in the stacked switch; judging according to the link status of each switch whether the service is affected after the links of the slave switches are all closed.

In an optional manner, the obtaining the optimal solution of the current service by applying the optimal protection algorithm by the control module according to the service blocking situation includes: if the split of the stack switch affects the service, the control module actively intervenes in port processing, closes the link that will generate a service loop, and the service link of the multi-master switch after the split.

In an optional manner, the closing of the link that will generate a service loop and the business link with uplink but no downlink, and downlink but no uplink when the service distribution of the multi-master switch after the split includes: if there are multiple sets of equipment from the split switch to the uplink link, then closing the remaining links to the uplink equipment; if there are multiple sets of equipment from the split switch to the downlink link, then closing the remaining links to the downlink equipment.

According to another aspect of an embodiment of the present invention, an apparatus for rapidly restoring services of a stack switch is provided, the apparatus comprising: a mode determination unit configured to determine the working mode of the stack switch through a control module disposed in the stack switch when the stack switch splits; a service interruption determination unit configured to obtain the service interruption situation of the stack switch according to the operation mode of the stack switch through the control module; and a service restoration unit to obtain an optimal solution of the current service by applying an optimal protection algorithm through the control module according to the service interruption situation.

According to another aspect of the embodiments of the present invention, a computing device is provided, including: a processor, a memory, a communication interface, and a communication bus, and the processor, the memory, and the communication interface complete mutual communication through the communication bus;

The memory is used to store at least one executable instruction, and the executable instruction causes the processor to execute the steps of the method for quickly restoring services of the stack switch.

According to still another aspect of the embodiments of the present invention, a computer storage medium is provided, and at least one executable instruction is stored in the storage medium, and the executable instruction causes the processor to execute the steps of the above-mentioned method for quickly restoring services of a stack switch.

In the embodiment of the present invention, when the stack switch is split, the control module installed in the stack switch determines the working mode of the stack switch; the control module obtains the service blocking situation of the stack switch according to the working mode of the stack switch; according to the service blocking situation, the optimal protection algorithm is applied by the control module to obtain the optimal solution of the current service, which can avoid the risk of full service blocking caused by the automatic killing of the service port of the standby machine after the stack switch is split, or the double-master and multi-master phenomenon of the switch after the split, resulting in blocked business loops.

The above description is only an overview of the technical solutions of the embodiments of the present invention. In order to better understand the technical means of the embodiments of the present invention, it can be implemented according to the contents of the description, and in order to make the above and other purposes, features and advantages of the embodiments of the present invention more obvious and understandable, the specific implementation modes of the present invention are listed below.

Description of drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiment. The drawings are only for the purpose of illustrating a preferred embodiment and are not to be considered as limiting the invention. Also throughout the drawings, the same reference numerals are used to designate the same components. In the attached picture:

FIG. 1 shows a schematic flowchart of a method for quickly restoring services of a stack switch provided by an embodiment of the present invention;

Fig. 2 shows a typical topology diagram of a stacked switch according to a method for quickly restoring services of a stacked switch provided by an embodiment of the present invention;

FIG. 3 shows a schematic diagram of post-split processing of a method for quickly restoring services of a stack switch provided by an embodiment of the present invention;

FIG. 4 shows a schematic diagram of Scenario 1 of a method for quickly restoring services of a stack switch provided by an embodiment of the present invention;

FIG. 5 shows a schematic diagram of scenario 2 of a method for quickly restoring services of a stack switch provided by an embodiment of the present invention;

FIG. 6 shows a schematic diagram of scenario 3 of a method for quickly restoring services of a stack switch provided by an embodiment of the present invention;

FIG. 7 shows a schematic structural diagram of a device for rapidly restoring services of a stack switch provided by an embodiment of the present invention;

Fig. 8 shows a schematic structural diagram of a computing device provided by an embodiment of the present invention.

Detailed ways

Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

Fig. 1 shows a schematic flowchart of a method for quickly restoring services of a stack switch provided by an embodiment of the present invention. The method for rapidly restoring services of the stacked switch is applied to the server side. As shown in Figure 1, the method for quickly restoring services of the stacked switch includes:

Step S11: When the stack switch splits, the working mode of the stack switch is determined through a control module provided in the stack switch.

A typical topology of a stacked switch is shown in Figure 2. The link from the switch (Switch, SW) to the Broadband Remote Access Server (BRAS) is an uplink link, the intermediate link is a stack link and a heartbeat link, and the link from the SW to an optical line terminal (OLT) is a downlink link. Wherein, the devices on the uplink may be other routers, switches, BRAS and other devices; the devices on the downlink may be switches, servers, OLT and other devices, which are not limited to the devices shown in the figure.

In the embodiment of the present invention, before step S11, a control module is set in a stack switch, and the stack switch includes at least one master switch and one slave switch. Before the switches form a stack, configure the uplinks of the stacked switches, so that the control module can actively mark the uplinks in the stacked switches. All ports of the downlinks of the stack switch are automatically calculated by the control module according to the uplink ports, the stack interconnection ports and the heartbeat interconnection ports. Because stack lines and heartbeat lines are already configured during stack initialization, the control module only needs to read the corresponding stack links and heartbeat links, and all remaining surviving ports are automatically calculated as downlinks by the control module. Specifically, the control module can read and analyze the port category according to the specific configuration of the uplink port, and then automatically calculate all the downlink ports of the stack switch according to the analyzed ports. The control module is specifically a software operating system that implements corresponding functions at the bottom layer of the stack switch.

In step S11, when the stacking switch has a stacking line and/or heartbeat line interruption and a stacking split occurs, the control module judges whether the stacking switch is in multi-master mode or master-slave mode after the stacking switch is split according to the interruption of the stacking line and the heartbeat line in the stacking switch.

Step S12: Obtain the service blocking situation of the stack switch according to the working mode of the stack switch through the control module.

In the embodiment of the present invention, if the stack switch is in the multi-master mode, it is determined that the stack switch will experience packet loss or loop on the service link, and the control module actively intervenes to control the ports of the stack switch. If the stack switch is in the master-slave mode, determine the impact on services after all the links of the slave switches are shut down. If the stack switch is in master-slave mode, read the link status of each switch in the stack switch; judge whether the service is affected after all the links of the slave switches are closed according to the link status of each switch.

Step S13: Obtain an optimal solution for the current service by applying an optimal protection algorithm through the control module according to the blocked service.

In the embodiment of the present invention, specifically, if the split of the stack switch affects services, the control module actively intervenes in port processing to close links that will generate service loops and service links that have uplinks but no downlinks, and downlinks but no uplinks when the service distribution of the multi-master switch after splitting occurs. Specifically, if there are multiple sets of devices from the split switch to the uplink, the rest of the links to the uplink are closed so that only one set of links exists from any uplink device to the switch, which can avoid service loops. If there are multiple sets of equipment from the split switch to the downlink link, close the remaining links to the downlink equipment so that only one set of links from any downlink equipment to the switch exists to avoid packet loss in service forwarding.

If it is judged that both the uplink and downlink of the split master switch have normal links, the control module does not intervene in specific control processing, and actively shuts down all the service ports of the slave switch according to the original mode.

The embodiment of the present invention mainly adds a control module to the stack switch to collect the status of the uplink and downlink of the stack switch in real time. When the stack switch splits, the status of the uplink and downlink is automatically judged according to the original uplink and downlink links set by the whole machine, and the optimal solution of the current service protection is obtained through the business optimization protection algorithm of the control module, and the uplink and downlink ports of the split stack switch are actively intervened to avoid the complete interruption of the service due to the mechanism of the stack switch or the loop risk of some services. After the split of the stack switch, the service port of the standby machine is automatically killed, resulting in full service blocking, or the dual-master and multi-master phenomena of the switch after the split, resulting in the blocking of the service loop.

After the stack switch is split, the complete process of automatically judging the link status of the stack switch and performing port processing by the control module is shown in Figure 3, including:

Step 201: A stack split occurs when a stack line and a heartbeat line of the stack switch are interrupted.

The split of a stack switch can be caused by the interruption of the stack line or the heartbeat line, or the interruption of both the stack line and the heartbeat line.

Step 202: The control module intervenes to determine whether the split is in master-slave mode. If yes, go to step 204; if not, go to step 203.

Specifically, the control module actively intervenes to determine whether the division is in a multi-master or master-slave mode according to the interruption of the stacking line and the heartbeat line. For example, if the stacking switch is disconnected but the heartbeat line is not broken, the stacking switch still works in the master-slave mode. If the stacking switch and the heartbeat line are interrupted at the same time, the stacking switch works in multi-active mode.

Step 203: the control module judges that the multi-master switch will have packet loss or loop in the service link, and performs active intervention control.

If the stack switch works in the multi-master mode after splitting, it means that the services of the stack switch will inevitably be blocked, and the control module will take the initiative to intervene in the control.

Step 204: the control module reads the link state of the switch.

If the stack switch works in the master-slave mode after splitting, the mechanism of the stack switch will actively shut down all the service ports of the slave switch, so it is necessary to read the link status of the switch through the control module, so as to facilitate further processing according to the link status of the switch.

Step 205: According to the current global link state, it is judged whether the service is affected after all links of the slave switch are shut down. If yes, go to step 207; if not, go to step 206.

Step 206: The control module does not intervene in specific control processing.

According to the read global link status, it is judged that the stacked switch will not affect the business, and there is no need to intervene in specific control processing through the control module, and it is sufficient to directly and actively shut down all the links of the slave switch.

Step 207: The control module intervenes in specific port processing.

After the split of the stack switch, the current split mode or the link status will affect the service, and the control module will intervene in specific port processing.

Step 208: When there are multiple sets of uplinks from the split switch to the uplink device, shut down the rest of the uplinks to the uplink device so that only one set of links from one uplink device to the switch exists.

Step 209: When there are multiple sets of equipment on the downlink link from the split switch, shut down the remaining links to the downlink equipment so that only one set of links from one downlink equipment to the switch exists.

When a batch of link interruptions occurs in the stack switch and a stack split occurs, the control module intervenes to read the status of the uplink and downlink links, and obtains the optimal solution for the current service protection through the business optimal protection algorithm in the control module. By closing the links that will generate service loops and the multi-master switches after the split, there are uplinks but no downlinks, downlinks and no uplinks. As long as the split master-slave switch survives to the downlink, uplink, and link, it can realize automatic business recovery without manual intervention control at all. rush repair. By applying the implementation of the embodiment of the present invention, on the one hand, it solves the problem that the service port of the standby machine is automatically killed after the stacking switch is split, or the problem of the service loop being blocked due to the dual-master and multi-master phenomenon of the switch after the split is formed;

The following is an example analysis of how the control module judges the actual business and then controls the port through the actual scene:

Example Scenario 1:

As shown in Figure 4, when all the stacking lines in the middle of the stacking switch SW01 are interrupted, but the heartbeat line is still alive, the current mechanism of the stacking switch will actively shut down all the service ports of the secondary switch SW01(2). At this time, the link from the downlink device OLT01 to the master switch SW01(1) is interrupted, and the link to the slave switch SW01(2) is normal. However, due to the stacking mechanism, all service links under the slave switch SW01(2) are actively shut down, causing the downlink device OLT01 to be interrupted, and all connected services are blocked.

After the control module in the stacked switch SW01 intervenes, it will actively perform link judgment before the stacked switch splits into a master-slave switch. Because there is an interruption of the link from the downlink device to the slave switch, it is judged that the original split mechanism will cause all services connected to the downlink device OLT01 to be blocked. Therefore, the control module will actively shut down its heartbeat link first, so that the original master switch SW01(1) and slave switch SW01(2) become dual-master mode instead of the original master-slave mode, which is the topology in Figure 5. At this time, the uplink device will change the link aggregation control protocol (Link Aggregation Control Protocol, LACP) status of the switch with the larger MAC address to unselected due to the change of the MAC address after the split of the switch for the link bundling of the original stack switch SW01. However, if the links from OLT-N to SW01 are normal, but the uplink equipment passing through one of them cannot forward, so half of the services will not be able to respond normally and be blocked. Therefore, the control module will actively close the link from the uplink device BRAS01 to the switch SW01(1) and the link from the uplink device BRAS02 to the switch SW01(2) in the uplink according to its own optimal service preservation algorithm, so as to avoid service interruption caused by the uplink device BRAS selecting the switch link with a small MAC address to keep alive.

Example Scenario 2:

As shown in Figure 5, when all the stacking lines in the middle of the stacking switch SW01 are interrupted, and the heartbeat line is also interrupted, the current stacking switch mechanism will simultaneously upgrade the switch SW01(1) and switch SW01(2) to the main switch. At this time, the link from the downlink device OLT01 to the master switch SW01(1) is interrupted, and the link to the slave switch SW01(2) is normal. However, due to the stacking mechanism, all service links under the slave switch SW01(2) are actively shut down, which causes OLT01 to be interrupted, and all connected services are blocked. At this time, the link bundling of the uplink device for the original stack switch SW01 will change the MAC address after the stack switch is split, and the LACP protocol of the link to the switch with the larger MAC address will actively change the status to unselected. In Figure 5, the links from the downlink devices OLT01 and OLT02 to the switch SW01(1) and the switch SW01(2) are interrupted, and the uplink link of the switch SW01 to the switch with a small MAC address is closed. Therefore, a set of services in the downlink devices OLT01 and OLT02 are completely blocked, and the uplink device cannot forward through one of them, so half of the services cannot respond normally and are blocked.

After the control module in the stack switch SW01 intervenes, before the stack switch splits into a dual-master switch, the control module will actively shut down the link from the uplink device BRAS01 to the switch SW01(1) and the link from the uplink device BRAS02 to the switch SW01(2) in the uplink according to its own optimal service preservation algorithm before the stack switch splits into a dual-master switch, so as to prevent the BRAS from selecting the switch link with a small MAC address to keep alive and causing service interruption.

Example Scenario 3:

As shown in Figure 6, when all the stacking lines in the middle of the stacking switch SW01 are interrupted, and the heartbeat line is also interrupted, the current mechanism of the stacking switch upgrades the switch SW01(1) and the switch SW01(2) to the main switch at the same time. Some of the uplinks and downlinks of switch SW01(1) and switch SW01(2) are interrupted. The uplink device BRAS01 has only the link to the switch SW01(2) alive, and the uplink device BRAS02 has only the link to the switch SW01(1). Therefore, there is no need for the control module to perform corresponding port operations. However, the links from the uplink device BRAS-N to the switch SW01(1) and the switch SW01(2) are normal. If it is selected by it, it will lead to the risk of packet loss and loop of some services of OLT-N.

After the control module in the stack switch SW01 intervenes, it actively shuts down the link from BRAS-N to SWO1(1) and the link with longer delay between the link from BRAS-N to SW01(2), so as to avoid service loops between BRAS and SW and then to OLT or service interruption caused by inability to effectively forward.

In the embodiment of the present invention, when the stack switch is split, the control module installed in the stack switch determines the working mode of the stack switch; the control module obtains the service blocking situation of the stack switch according to the working mode of the stack switch; according to the service blocking situation, the optimal protection algorithm is applied by the control module to obtain the optimal solution of the current service, which can avoid the risk of full service blocking caused by the automatic killing of the service port of the standby machine after the stack switch is split, or the double-master and multi-master phenomenon of the switch after the split, resulting in blocked business loops.

FIG. 7 shows a schematic structural diagram of an apparatus for rapidly restoring services of a stacked switch according to an embodiment of the present invention. As shown in FIG. 7 , the apparatus for quickly restoring services of a stack switch includes: a mode determining unit 701 , a service blocking determining unit 702 , a service restoring unit 703 and a setting unit 704 . in:

The mode determining unit 701 is used to determine the working mode of the stacking switch through the control module provided in the stacking switch when the stacking switch is split; the service blocking determination unit 702 is used to obtain the service blocking situation of the stacking switch according to the working mode of the stacking switch through the control module; the service recovery unit 703 is used to obtain the optimal solution of the current service by applying the optimal protection algorithm through the control module according to the service blocking situation.

In an optional manner, the setting unit 704 is configured to: set a control module in the stack switch, the stack switch includes at least one master switch and one slave switch; before the switches form a stack, configure the uplink of the stack switch; through the control module, automatically calculate all ports of the downlink of the stack switch according to the uplink port, the stack interconnection port and the heartbeat interconnection port.

In an optional manner, the mode determination unit 701 is configured to: use the control module to determine whether the stack switch is in multi-master mode or master-slave mode after the stack switch splits according to interruption of stack lines and heartbeat lines in the stack switch.

In an optional manner, the service blocking determination unit 702 is configured to: if the stack switch is in the master-slave mode, determine the impact on services after all links of the slave switch are closed; if the stack switch is in the multi-master mode, determine that the stack switch will experience packet loss or loops on service links.

In an optional manner, the service blocking determination unit 702 is configured to: if the stack switch is in master-slave mode, read the link status of each switch in the stack switch; judge according to the link status of each switch whether the service is affected after all the links of the slave switches are shut down.

In an optional manner, the service recovery unit 703 is configured to: if the split of the stack switch affects the service, the control module actively intervenes in port processing to close the link that will generate a service loop and the service link of the multi-master switch after the split.

In an optional manner, the service recovery unit 703 is configured to: if there are multiple sets of devices from the split switch to the uplink, shut down the rest of the links to the uplink; if there are multiple sets of equipment from the split switch to the downlink, shut down the rest of the links to the downlink.

In the embodiment of the present invention, when the stack switch is split, the control module installed in the stack switch determines the working mode of the stack switch; the control module obtains the service blocking situation of the stack switch according to the working mode of the stack switch; according to the service blocking situation, the optimal protection algorithm is applied by the control module to obtain the optimal solution of the current service, which can avoid the risk of full service blocking caused by the automatic killing of the service port of the standby machine after the stack switch is split, or the double-master and multi-master phenomenon of the switch after the split, resulting in blocked business loops.

An embodiment of the present invention provides a non-volatile computer storage medium, where at least one executable instruction is stored in the computer storage medium, and the computer executable instruction can execute the method for quickly restoring services of a stack switch in any of the above method embodiments.

Specifically, the executable instruction can be used to make the processor perform the following operations:

When the stack switch splits, the operation mode of the stack switch is determined by a control module arranged in the stack switch;

Obtaining the service blocking situation of the stack switch according to the working mode of the stack switch through the control module;

According to the blocked situation of the service, the optimal solution of the current service is obtained by applying the optimal protection algorithm through the control module.

In an optional manner, the executable instructions cause the processor to perform the following operations:

A control module is set in a stack switch, and the stack switch includes at least one master switch and one slave switch;

Before the switches form a stack, configure the uplink of the stack switches;

All ports of the downlinks of the stack switch are automatically calculated by the control module according to the uplink ports, the stack interconnection ports and the heartbeat interconnection ports.

In an optional manner, the executable instructions cause the processor to perform the following operations:

The control module judges whether the stack switch is in a multi-master mode or a master-slave mode after the stack switch splits according to the interruption of the stack line and the heartbeat line in the stack switch.

In an optional manner, the executable instructions cause the processor to perform the following operations:

If the stack switch is in the master-slave mode, then determine the impact on the business after all links of the slave switch are closed;

If the stack switch is in the multi-master mode, it is determined that a service link packet loss or a loop will occur in the stack switch.

In an optional manner, the executable instructions cause the processor to perform the following operations:

If the stack switch is in master-slave mode, read the link status of each switch in the stack switch;

According to the link status of each switch, it is judged whether the service is affected after all the links of the secondary switches are shut down.

In an optional manner, the executable instructions cause the processor to perform the following operations:

If the split of the stack switch affects services, the control module actively intervenes in port processing to close the links that will generate service loops and service links with uplinks but no downlinks and downlinks but no uplinks when the multi-master switch distributes services after splitting.

In an optional manner, the executable instructions cause the processor to perform the following operations:

If there are multiple sets of equipment from the split switch to the uplink, shut down the remaining links to the uplink;

If there are multiple sets of equipment from the split switch to the downlink, shut down the rest of the links to the downlink.

In the embodiment of the present invention, when the stack switch is split, the control module installed in the stack switch determines the working mode of the stack switch; the control module obtains the service blocking situation of the stack switch according to the working mode of the stack switch; according to the service blocking situation, the optimal protection algorithm is applied by the control module to obtain the optimal solution of the current service, which can avoid the risk of full service blocking caused by the automatic killing of the service port of the standby machine after the stack switch is split, or the double-master and multi-master phenomenon of the switch after the split, resulting in blocked business loops.

An embodiment of the present invention provides a computer program product, the computer program product includes a computer program stored on a computer storage medium, the computer program includes program instructions, and when the program instructions are executed by a computer, the computer is made to execute the method for quickly restoring services of a stack switch in any of the above method embodiments.

Specifically, the executable instruction can be used to make the processor perform the following operations:

When the stack switch splits, the operation mode of the stack switch is determined by a control module arranged in the stack switch;

Obtaining the service blocking situation of the stack switch according to the working mode of the stack switch through the control module;

According to the blocked situation of the service, the optimal solution of the current service is obtained by applying the optimal protection algorithm through the control module.

In an optional manner, the executable instructions cause the processor to perform the following operations:

A control module is set in a stack switch, and the stack switch includes at least one master switch and one slave switch;

Before the switches form a stack, configure the uplink of the stack switches;

All ports of the downlinks of the stack switch are automatically calculated by the control module according to the uplink ports, the stack interconnection ports and the heartbeat interconnection ports.

In an optional manner, the executable instructions cause the processor to perform the following operations:

The control module judges whether the stack switch is in a multi-master mode or a master-slave mode after the stack switch splits according to the interruption of the stack line and the heartbeat line in the stack switch.

In an optional manner, the executable instructions cause the processor to perform the following operations:

If the stack switch is in the master-slave mode, then determine the impact on the business after all links of the slave switch are closed;

If the stack switch is in the multi-master mode, it is determined that a service link packet loss or a loop will occur in the stack switch.

In an optional manner, the executable instructions cause the processor to perform the following operations:

If the stack switch is in master-slave mode, read the link status of each switch in the stack switch;

According to the link status of each switch, it is judged whether the service is affected after all the links of the secondary switches are shut down.

In an optional manner, the executable instructions cause the processor to perform the following operations:

If the split of the stack switch affects services, the control module actively intervenes in port processing to close the links that will generate service loops and service links with uplinks but no downlinks and downlinks but no uplinks when the multi-master switch distributes services after splitting.

In an optional manner, the executable instructions cause the processor to perform the following operations:

If there are multiple sets of equipment from the split switch to the uplink, shut down the remaining links to the uplink;

If there are multiple sets of equipment from the split switch to the downlink, shut down the rest of the links to the downlink.

In the embodiment of the present invention, when the stack switch is split, the control module installed in the stack switch determines the working mode of the stack switch; the control module obtains the service blocking situation of the stack switch according to the working mode of the stack switch; according to the service blocking situation, the optimal protection algorithm is applied by the control module to obtain the optimal solution of the current service, which can avoid the risk of full service blocking caused by the automatic killing of the service port of the standby machine after the stack switch is split, or the double-master and multi-master phenomenon of the switch after the split, resulting in blocked business loops.

FIG. 8 shows a schematic structural diagram of a computing device provided by an embodiment of the present invention, and the specific embodiment of the present invention does not limit the specific implementation of the device.

As shown in FIG. 8 , the computing device may include: a processor (processor) 802 , a communication interface (Communications Interface) 804 , a memory (memory) 806 , and a communication bus 808 .

Wherein: the processor 802 , the communication interface 804 , and the memory 806 communicate with each other through the communication bus 808 . The communication interface 804 is used to communicate with network elements of other devices such as clients or other servers. The processor 802 is configured to execute the program 810, specifically, may execute relevant steps in the above embodiment of the method for quickly restoring services of the stack switch.

Specifically, the program 810 may include program codes including computer operation instructions.

The processor 802 may be a central processing unit CPU, or an ASIC (Application Specific Integrated Circuit), or one or each integrated circuit configured to implement the embodiments of the present invention. The one or each processor included in the device may be of the same type, such as one or each CPU, or may be of different types, such as one or each CPU and one or each ASIC.

The memory 806 is used to store the program 810 . The memory 806 may include a high-speed RAM memory, and may also include a non-volatile memory (non-volatile memory), such as at least one disk memory.

The program 810 can specifically be used to make the processor 802 perform the following operations:

When the stack switch splits, the operation mode of the stack switch is determined by a control module arranged in the stack switch;

Obtaining the service blocking situation of the stack switch according to the working mode of the stack switch through the control module;

According to the blocked situation of the service, the optimal solution of the current service is obtained by applying the optimal protection algorithm through the control module.

In an optional manner, the program 810 enables the processor to perform the following operations:

A control module is set in a stack switch, and the stack switch includes at least one master switch and one slave switch;

Before the switches form a stack, configure the uplink of the stack switches;

All ports of the downlinks of the stack switch are automatically calculated by the control module according to the uplink ports, the stack interconnection ports and the heartbeat interconnection ports.

In an optional manner, the program 810 enables the processor to perform the following operations:

The control module judges whether the stack switch is in a multi-master mode or a master-slave mode after the stack switch splits according to the interruption of the stack line and the heartbeat line in the stack switch.

In an optional manner, the program 810 enables the processor to perform the following operations:

If the stack switch is in the master-slave mode, then determine the impact on the business after all links of the slave switch are closed;

If the stack switch is in the multi-master mode, it is determined that a service link packet loss or a loop will occur in the stack switch.

In an optional manner, the program 810 enables the processor to perform the following operations:

If the stack switch is in master-slave mode, read the link status of each switch in the stack switch;

According to the link status of each switch, it is judged whether the service is affected after all the links of the secondary switches are shut down.

In an optional manner, the program 810 enables the processor to perform the following operations:

If the split of the stack switch affects services, the control module actively intervenes in port processing to close the links that will generate service loops and service links with uplinks but no downlinks and downlinks but no uplinks when the multi-master switch distributes services after splitting.

In an optional manner, the program 810 enables the processor to perform the following operations:

If there are multiple sets of equipment from the split switch to the uplink, shut down the remaining links to the uplink;

If there are multiple sets of equipment from the split switch to the downlink, shut down the rest of the links to the downlink.

In the embodiment of the present invention, when the stack switch is split, the control module installed in the stack switch determines the working mode of the stack switch; the control module obtains the service blocking situation of the stack switch according to the working mode of the stack switch; according to the service blocking situation, the optimal protection algorithm is applied by the control module to obtain the optimal solution of the current service, which can avoid the risk of full service blocking caused by the automatic killing of the service port of the standby machine after the stack switch is split, or the double-master and multi-master phenomenon of the switch after the split, resulting in blocked business loops.

The algorithms or displays presented herein are not inherently related to any particular computer, virtual system, or other device. Various generic systems can also be used with the teachings based on this. The structure required to construct such a system is apparent from the above description. Furthermore, embodiments of the present invention are not directed to any particular programming language. It should be understood that various programming languages can be used to implement the content of the present invention described herein, and the above description of specific languages is for disclosing the best mode of the present invention.

In the description provided herein, numerous specific details are set forth. However, it is understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure the understanding of this description.

Similarly, it should be understood that in the above description of exemplary embodiments of the invention, in order to streamline the present invention and to facilitate understanding of one or more of the various inventive aspects, various features of the embodiments of the invention are sometimes grouped together in a single embodiment, figure, or description thereof. This method of disclosure, however, is not to be interpreted as reflecting an intention that the claimed invention requires more features than are expressly recited in each claim.

Those skilled in the art can understand that the modules in the device in the embodiment can be adaptively changed and arranged in one or more devices different from the embodiment. Modules or units or components in the embodiments may be combined into one module or unit or component, and furthermore may be divided into a plurality of sub-modules or sub-units or sub-assemblies. All features disclosed in this specification (including accompanying claims, abstract and drawings) and all procedures or elements of any method or apparatus so disclosed may be combined in any combination, unless at least some of such features and/or procedures or elements are mutually exclusive. Each feature disclosed in this specification (including accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.

It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention can be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In a unit claim enumerating several means, several of these means can be embodied by one and the same item of hardware. The use of the words first, second, and third, etc. does not indicate any order. These words can be interpreted as names. The steps in the above embodiments, unless otherwise specified, should not be construed as limiting the execution order.

Claims (8)

1. A method for quickly restoring traffic to a stack switch, the method comprising:

when a stack switch is split, determining an operation mode of the stack switch through a control module arranged in the stack switch comprises the following steps: judging whether the stack switch is in a multi-master mode or a master-slave mode after the stack switch is split according to the interruption condition of the stack circuit and the heartbeat circuit in the stack switch; if the stack switch has a stack line interruption and the heartbeat line is not broken, the stack switch still works in a master-slave mode; if the stack switch is interrupted by both the stack line and the heartbeat line, the stack switch operates in a multi-master mode;

acquiring the service blocking condition of the stack switch according to the working mode of the stack switch through the control module;

according to the service blocking condition, an optimal solution of the current service is obtained by applying an optimal protection algorithm through the control module, and the method comprises the following steps: if the split stack switch has influence on the service, the control module actively intervenes in port processing to close the link which can generate a service loop and the service link with upper connection or lower connection or upper connection when the split multi-main switch service is distributed.

2. The method of claim 1, wherein prior to splitting the stack switch, comprising:

providing a control module in a stack switch, the stack switch comprising at least one master switch and one slave switch;

configuring uplink of a stack switch before the switch forms a stack;

and automatically calculating all ports of the downlink of the stack switch according to the uplink port, the stack interconnection port and the heartbeat interconnection port by the control module.

3. The method according to claim 1, wherein said reading, by said control module, a traffic blocking condition of said stack switch according to an operation mode of said stack switch, comprises:

if the stack switch is in a master-slave mode, determining the influence on the service after all the links of the slave switch are closed;

if the stack switch is in the multi-master mode, determining that the stack switch has a service link packet loss or loop.

4. A method according to claim 3, wherein determining the effect on traffic after all slave switch links are closed if the stack switch is in multi-master mode comprises:

If the stack switch is in a master-slave mode, reading the link state of each switch in the stack switch;

judging whether the business is influenced after all the slave switch links are closed according to the link states of all the switches.

5. The method of claim 1, wherein said closing the link that would result in the traffic loop and the traffic link with or without the downlinks and with or without the uplinks at the time of post-split multi-master switch traffic distribution comprises:

if multiple sets of equipment exist in the split switch to the uplink equipment, closing the rest links of the uplink equipment;

if there are multiple sets of devices in the split switch-to-downstream link, the remaining links to the downstream devices are closed.

6. An apparatus for fast restoration of traffic for a stack switch, the apparatus comprising:

a mode determining unit for determining an operation mode of a stack switch through a control module provided in the stack switch when the stack switch splits, comprising: judging whether the stack switch is in a multi-master mode or a master-slave mode after the stack switch is split according to the interruption condition of the stack circuit and the heartbeat circuit in the stack switch; if the stack switch has a stack line interruption and the heartbeat line is not broken, the stack switch still works in a master-slave mode; if the stack switch is interrupted by both the stack line and the heartbeat line, the stack switch operates in a multi-master mode;

The service blocking determining unit is used for acquiring the service blocking condition of the stack switch according to the working mode of the stack switch through the control module;

the service recovery unit is configured to obtain an optimal solution of a current service by applying an optimal protection algorithm through the control module according to the service blocking condition, and includes: if the split stack switch has influence on the service, the control module actively intervenes in port processing to close the link which can generate a service loop and the service link with upper connection or lower connection or upper connection when the split multi-main switch service is distributed.

7. A computing device, comprising: the device comprises a processor, a memory, a communication interface and a communication bus, wherein the processor, the memory and the communication interface complete communication with each other through the communication bus;

the memory is configured to store at least one executable instruction that causes the processor to perform the steps of the method for fast restoration of traffic for a stack switch according to any one of claims 1-5.

8. A computer storage medium having stored therein at least one executable instruction for causing a processor to perform the steps of the method for fast restoration of traffic for a stack switch according to any one of claims 1-5.