CN104125079B - A kind of method and device for determining two-node cluster hot backup configuration information - Google Patents

Abstract

The invention discloses a method and device for determining configuration information of dual-machine hot backup, comprising: a network device serving as a management master device initiates a link layer connectivity detection to a network device serving as a management slave device, and according to the link layer The result of the connectivity detection establishes a backup peer, and determines that the backup peer includes a master interface and a backup interface that can back up each other, wherein the management master device and the management slave device are capable of mutual backup Two network devices; the management master device notifies the management slave device of the information about the master interface and the backup interface included in the backup peer. The embodiment of the present invention makes the processing process of determining the configuration information of the dual-system hot backup have the advantages of simple configuration deployment and maintenance process, so as to greatly reduce the network operation cost without increasing the network construction cost.

Description

A method and device for determining configuration information of dual-machine hot backup

technical field

The invention relates to the field of communication technology, in particular to a method and device for determining configuration information of dual-system hot backup.

Background technique

With the development of broadband network services, users have higher and higher requirements for network reliability. For example, network interruption will directly affect the experience of large online game players, or affect enterprise users VOIP (voice over IP, voice over IP), The experience of applications such as video (such as meetings, etc.).

Based on the above requirements, in order to improve the reliability of broadband network access, operators will adopt a dual-homing access method, that is, user equipment (such as a switch) is connected to two BRAS (Broadband Access Server, Broadband Access Server, BroadbandRemote Access Server). Since BRAS devices generally implement access authentication through PPPoE (Point-to-Point Protocol OverEthernet, the method of transmitting point-to-point sessions on Ethernet), if data such as user authentication status and other data are not backed up between devices, then the link After protection switching occurs due to node failure or node failure, the user needs to redial to complete the access on another device. During this process, the user's network application connection will be disconnected, which greatly affects the user experience. Therefore, related user data such as user access authentication will be backed up in real time between the active and standby devices. In order to back up user data between the active device and the standby device, currently a generally adopted method includes a VRRP (Virtual Router Redundancy Protocol, Virtual Router Redundancy Protocol) extended method. In this VRRP extension mode, it is mainly based on VRRP dual-machine redundancy protection implementation. That is, in order to realize hot backup between two BRAS machines, the VRRP protocol is extended to add functions such as synchronous backup of user information, so as to make full use of the original networking and VRRP protocol to realize corresponding hot backup of two machines.

However, since VRRP is an interface-oriented protection protocol, in order to realize hot backup between two BRASs, it is necessary to configure at least For a VRRP protection group, each VRRP protection group needs to be configured with 3 IP addresses and 10-20 commands. In this way, thousands of commands and hundreds of IP addresses need to be configured for a BRAS device that realizes dual-machine hot standby . Moreover, since the process of realizing dual-machine hot backup usually needs to be protected based on the granularity of VLAN (Virtual Local Area Network, Virtual Local Area Network), it is necessary to plan the VLAN uniformly, and at the same time, the configuration of the lower-layer switch also needs to be adjusted, which further Increased the complexity of the entire configuration and maintenance process.

Contents of the invention

The purpose of the present invention is to provide a method and device for determining the configuration information of dual-system hot backup, so as to reduce the complexity of the process of configuring and maintaining the configuration information of dual-system hot backup.

In the first aspect, the embodiment of the present invention provides a method for determining configuration information of dual-system hot backup, including:

The network device as the management master device initiates a link layer connectivity detection to the network device as the management slave device, and establishes a backup peer according to the result of the link layer connectivity detection, and determines that the backup peer includes A master interface and a backup interface that can back up each other, wherein the management master device and the management slave device are two network devices that can back up each other;

The management master device notifies the management slave device of the information of the master interface and the backup interface included in the backup peer.

In a first possible implementation manner of the first aspect, the step of initiating link layer connectivity detection includes:

The master management device actively initiates the link layer connectivity detection according to the outer virtual local area network configuration information of the interface connecting itself to the lower layer network device.

In a second possible implementation of the first aspect, the step of initiating link layer connectivity detection includes:

When the master management device receives the non-unicast access message of the virtual local area network, if the virtual local area network has not established the backup peer, it initiates the link layer connectivity detection.

Based on the first aspect or the first possible implementation of the first aspect or the second possible implementation of the first aspect, in the third possible implementation of the first aspect , the method also includes:

The management master device periodically initiates the link layer connectivity detection for the established backup peer according to a predetermined time interval, and when it is determined that the established backup peer fails, it The interface of the backup peer re-initiates the link layer connectivity detection, and establishes a new backup peer for the interface of the failed backup peer, wherein the failure of the backup peer refers to the failure of the backup peer The result of the connectivity detection is that there is no connectivity between the active interface and the standby interface included in the backup peer.

Based on the first aspect or the first possible implementation of the first aspect or the second possible implementation of the first aspect, in the fourth possible implementation of the first aspect , the step of determining the active interface and the backup interface included in the backup peer that can back up each other includes:

The master management device according to the local attribute of the interface in the backup peer, the rate matching of the interface in the backup peer, the balance degree of uplink and downlink traffic, the balance degree of address pool or the balance degree of virtual local area network One or more of them determine the active interface and backup interface included in the backup peer that can back up each other, wherein the local attribute is used to pre-configure and specify a certain interface as the backup peer in which it is located. Active interface or standby interface.

In the second aspect, an embodiment of the present invention provides a device for determining configuration information of dual-system hot backup, wherein the device is set in a network device serving as a management master device, and the device includes:

A connectivity detection unit, configured to initiate a link layer connectivity detection to a network device serving as a management slave device, wherein the management master device and the management slave device are two network devices that can back up each other;

A backup peer establishment unit, configured to establish a backup peer according to the result of the link layer connectivity detection of the connectivity detection unit, and determine the active interfaces that can be backed up by each other included in the backup peer and alternate interfaces;

The backup peer information sending unit is configured to notify the management slave device of the information about the active interface and the backup interface included in the backup peer established by the backup peer establishment unit.

In the first possible implementation manner of the second aspect, the connectivity detection unit includes a static connectivity detection subunit, configured to connect the main management device to the lower-layer network device according to the outer virtual local area network The configuration information actively initiates the link layer connectivity detection.

In a second possible implementation of the second aspect, the connectivity detection unit includes a dynamic connectivity detection subunit, configured to , if the virtual local area network has not established the backup peer, initiate the link layer connectivity detection.

Based on the second aspect or the first possible implementation of the second aspect or the second possible implementation of the second aspect, in the third possible implementation of the second aspect , the device also includes:

The connectivity monitoring unit is configured to periodically initiate the link layer connectivity detection for the established backup peer according to a predetermined time interval, and when it is determined that the established backup peer fails, then Re-initiating the link layer connectivity detection for the interface of the failed backup peer, and establishing a new backup peer for the interface of the failed backup peer, wherein the failure of the backup peer is It means that the result of the connectivity detection is that there is no communication between the active interface and the standby interface included in the backup peer.

Based on the second aspect or the first possible implementation of the second aspect or the second possible implementation of the second aspect, in the fourth possible implementation of the second aspect , the backup peer establishment unit includes:

A backup peer determination subunit, configured to establish a backup peer according to the result of the link layer connectivity detection by the connectivity detection unit;

The active/standby selection subunit is configured to use the local attribute of the interface in the backup peer, the rate matching of the interface in the backup peer, the balance degree of uplink and downlink traffic, the balance degree of address pool or the virtual local area network One or more items in the quantity balance degree determine the active interface and the backup interface included in the backup peer that can back up each other, wherein the local attribute is used to pre-configure a specific interface as the backup peer where it is located active interface or standby interface in the body.

It can be seen from the above technical solution provided by the present invention that the technical solution provided by the embodiment of the present invention makes the processing process of determining the configuration information of the dual-system hot backup have the advantages of simple configuration deployment and maintenance process.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For Those of ordinary skill in the art can also obtain other drawings based on these drawings on the premise of not paying creative work.

FIG. 1 is a schematic diagram of a processing procedure of a method for determining configuration information of dual-system hot backup provided by an embodiment of the present invention;

Fig. 2 is a schematic diagram of the application environment structure of the embodiment of the present invention;

FIG. 3 is a schematic diagram of the processing process of an application embodiment of a method for determining dual-system hot backup configuration information provided by an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a device for determining dual-system hot backup configuration information provided by an embodiment of the present invention;

FIG. 5 is a schematic structural diagram II of a device for determining configuration information of dual-system hot backup provided by an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a network device provided by an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

A method for determining configuration information of dual-machine hot backup provided by an embodiment of the present invention, as shown in FIG. 1 , may specifically include the following steps:

Step 11, the network device as the management master device initiates link layer connectivity detection to the network device as the management slave device;

Among them, the corresponding network equipment may include, but is not limited to: a broadband access server, etc.;

The corresponding triggering methods for initiating connectivity detection may include, but are not limited to, one or more of the following:

Mode 1: The management master device actively initiates the link layer connectivity detection according to the outer virtual local area network configuration of the interface of the network device;

Mode 2: When the master management device receives the non-unicast access message of the virtual local area network, if the virtual local area network has not established the backup peer, it initiates the link layer connectivity detection; the non-unicast The access message can be a broadcast message or a multicast message, and the broadcast message or multicast message is a message that can be received by network devices in the Layer 2 broadcast domain (such as the management master device and the management slave device) ;

Wherein, in the above description, the corresponding management master device is a network device selected and determined according to a predetermined method among the two network devices capable of mutual backup, and the other network device may be called a management slave device;

For example, the corresponding link layer connectivity detection process may include: performing connectivity detection through LLDP (Link Layer Discovery Protocol, Link Layer Discovery Protocol) packets, or through Send a broadcast message in the broadcast area to perform connectivity detection; taking the connectivity detection through the broadcast message as an example, the corresponding connectivity detection process may include: the management master device sends a broadcast message (such as a broadcast message in a private format) ), after the management slave device receives the broadcast message, it will notify the management master device (the notification includes the identifier of the interface that received the broadcast message, such as the interface number, etc.), and the management master device will Judging whether the interface between the management master device and the management slave device is connected, so as to determine the link layer connectivity of the interface between the management master device and the management slave device;

Step 12, establishing a backup peer according to the result of the link layer connectivity detection, the backup peer includes interfaces that can back up each other, that is, a main interface and a backup interface;

The processing step of establishing a backup peer according to the result of the link layer connectivity detection may specifically include: the management master device, according to the received notification sent by the management slave device, if A on the management master device is found The above-mentioned broadcast message can be transmitted between the interface and the A' interface on the management slave device, that is, the A interface and the A' interface are connected, and a backup peer including the A interface and the A' interface is established.

Further, in this step, after the master management device establishes the backup peer, the master management device may also according to the local attribute of the interface in the backup peer, the One or more of rate matching, uplink and downlink traffic balance, address pool balance, or virtual local area network number balance determines the active interface and standby interface in the backup peer, wherein the local attribute It is used to pre-configure and specify an interface as the active interface in the backup peer where it is located. For example, if you want an interface to be the active interface, you can indicate that the interface needs to be used as a backup by configuring the local attribute of the interface for The active interface in the peer, that is, the selection of the active interface of the backup peer can be manually intervened through the configuration of the local attribute of the interface; or, the local attribute of the interface can also be manually intervened in the backup peer. The selection of the standby interface is similar to the selection of the active interface in the backup peer by manual intervention, that is, the pre-configuration designates an interface as the standby interface in the backup peer where it is located;

Step 13, the management master device notifies the management slave device of the information of the master interface and the backup interface included in the backup peer;

Specifically, the information of the active interface and the standby interface may include, but is not limited to, information such as an interface number and an active/standby state of the interface.

Assuming that the backup peer is established between the interface connected to the lower-layer network device on the management master device and the interface connected to the lower-layer network device on the management slave device, after the dual-machine hot backup configuration information is established in the above-mentioned way, when the backup When the active interface in the working state of the peer fails, the network device where the backup interface is located can notify the lower-layer network device to direct the service flow to the backup interface in the backup peer, and the corresponding lower-layer network device It can include but is not limited to: lower layer switching equipment, such as switches, etc.;

Specifically, during the process in which the network device where the backup interface is located notifies the lower-layer network device to direct the service flow to the backup interface in the backup peer, specifically, the active interface in the backup peer may send the service flow to the lower-layer network device. Sending a Gratuitous ARP (Gratuitous Address Resolution Protocol, free address resolution protocol) message to notify the lower layer network device to direct the service flow to the standby interface in the interface backup peer.

In the embodiment of the present invention, a control connection, such as a TCP (Transmission Control Protocol, transmission control protocol) connection, etc., can also be established between the two network devices (that is, the management master device and the management slave device), and through the established The control connection backs up the global information required by the users connected under the lower network device to access the network between the management master device and the management slave device, such as user information; The management transfers information such as the local attribute of the interface between the slave devices. Further, in order to ensure the reliable backup of the corresponding global information, a backup control connection can also be established between the active interface and the backup interface contained in one of the backup peers, which is used as the connection between the two network devices. The backup connection of the control connection, that is, when the established control connection fails, the global information can be backed up through the backup control connection, so as to improve the reliability of the global information backup.

In the embodiment of the present invention, if one of the two network devices that can back up each other fails to work normally, all the backup interfaces on the other network device of the two network devices that can back up each other can be Upgrade to the active interface, and notify the lower-layer network equipment to switch the service flow direction.

It can be seen from the above-mentioned embodiments of the present invention that in the embodiments of the present invention, the automatic discovery and protection switching of the protection link are realized through the network automation technology (that is, the backup peer is established through the detection result of the connectivity detection technology, to carry out corresponding dual-machine hot backup processing) , and the corresponding process of establishing the backup peer can be automatically realized based on the VLAN attribute, so that the process of establishing the backup peer can well adapt to the already planned and arranged It does not need to manually plan VLANs to adapt to the backup peers that need to be established, and there is no need to adjust the configuration of lower-layer switches caused by manually planning VLANs. Therefore , correspondingly, the number of configuration commands required in the process of realizing dual-system hot backup is relatively small and the configuration operation process is simple, which greatly reduces the complexity of configuration and maintenance, and improves maintenance efficiency.

The technical solution for realizing dual-device hot backup provided by the embodiment of the present invention will be further described below in conjunction with the accompanying drawings.

As shown in Figure 2, assume that the backup group includes network equipment A and network equipment B, network equipment A and B can be two BRAS respectively, and there are two BAS (Broadband Access Service) interfaces on network equipment A, They are BAS interface 1 and BAS interface 2 respectively, BAS interface 1 is connected to lower-layer network device C, and BAS interface 2 is connected to lower-layer network device D; network device B has two BAS interfaces, namely BAS interface 3 and BAS interface 4, and BAS interface 3 Connect to lower-layer network device C, and BAS interface 4 to connect to lower-layer network device D. In conjunction with the backup system framework shown in Figure 2, the specific implementation process of the processing scheme for realizing dual-machine hot backup provided by the embodiment of the present invention is shown in Figure 3, to automatically complete the configuration of the BAS interface on the network device A and the network device B. The active-standby relationship between the BAS interfaces and the corresponding protection switching, which may specifically include the following steps:

Step 31, establishing a control connection, selecting a management master device and a management slave device;

Specifically, a TCP connection can be established between two peers (network devices) in the backup group, and one of the peers can be selected as the management master device and the other as the management slave device according to policies such as priority. The master-slave concept here is only Master-slave in the sense of management, not master-slave of interface;

The corresponding backup group includes two network devices that can back up each other, that is, two peers. In this embodiment, it is assumed that network device A is designated as the management master device, and network device B is designated as the management slave device.

Step 32, configuring VLAN attributes and local (local) attributes of the BAS interface;

Specifically, the VLAN attribute and the local attribute of the BAS interface are used as the basis for establishing the backup peer, wherein the VLAN attribute of the BAS interface is used as the basis for establishing the backup peer, and the local attribute of the BAS interface is used as the basis for establishing the backup peer. as the basis for determining the active interface and the standby interface in the backup peer.

For example, to add BAS interface 1 and BAS interface 3 to backup peer 1, add BAS interface 2 and BAS interface 4 to backup peer 2, and set BAS1 as the If you set BAS4 as the active port of backup peer 2, you can set the value of the VLAN attribute of BAS interface 1 and BAS interface 3 to 1, and set the value of the VLAN attribute of BAS interface 2 and BAS interface 4 to Set the value to 2, configure the value of the local attribute of BAS interface 1 and BAS interface 4 to 1 (here assume that the value of the local attribute is 1, which means it is set to local, and 0 means it is not set to local), and configure BAS interface 2 and BAS interface The value of the local attribute of 3 is 0.

Through this step, the local attribute can be specified for the VLAN with local priority according to the topology structure, so as to designate a certain interface as the active interface in the backup peer. Between a pair of connected backup peers (that is, the BAS interfaces of the two network devices included in the backup group), the interface specified with the local attribute is preferentially selected as the active interface to reduce the number of switches in U-shaped networking. traffic between them.

Step 33, the management master device initiates connectivity detection to establish a backup peer;

In this step, specifically, a backup peer can be established through static connectivity detection, or a backup peer can be established through dynamic connectivity detection, which will be described separately below;

(1) Establish a backup peer by means of static connectivity detection

The management master device actively initiates connectivity detection to the management slave device according to the value of the VLAN attribute of the BAS interface configured in step 32 (that is, only initiates connectivity detection between interfaces in the same VLAN according to the VLAN configuration) to detect the corresponding The connectivity between the BAS interface of the management master device and the BAS interface of the management slave device, and establish a backup peer according to the detection result and notify the management slave device, the backup peer includes mutual backup Interface and VLAN information, for example, may be a pair of "port (interface) + vlan". For example, network device A initiates a connectivity detection to network device B. Specifically, it may, but not limited to, carry the information of BAS interface 1 and VLAN1 in the connectivity detection message, obtain the response of network device B, and know the BAS interface of network device B. 3 is also in VLAN1, so that a backup peer 1 is established, and the backup peer 1 includes BAS interface 1 and BAS interface 3. Afterwards, network device A initiates a connectivity test to network device B again, carries the information of BAS interface 2 and VLAN2 in the connectivity test message, obtains a response from network device B, and learns that BAS interface 4 of network device B is also in VLAN2 , so as to establish a backup peer 2, and the backup peer 2 includes a BAS interface 2 and a BAS interface 4.

The master management device also generates the backup peer’s ID according to one or more strategies such as the local attribute of the interface in the backup peer, interface rate matching, uplink and downlink traffic balance, address pool balance, and VLAN quantity balance. Active-standby relationship (that is, determine the corresponding active interface and standby interface) and notify the management slave device. For example, when the policy for determining the active interface and the standby interface is set to consider the local attribute of the interface, the active-standby relationship of the backup peer can be determined according to the local attribute of each BAS interface configured in step 32 above.

Optionally, one of the backup peers can also be selected between the management master and slave devices to create a backup control connection as the backup link of the TCP connection established in step 31;

(2) Establish a backup peer by means of dynamic connectivity detection

If the BAS interface VLAN configuration (that is, the VLAN attribute) is anyother (that is, if you do not know the configuration of the lower-layer switch, use this command, which means that any VLAN or QinQ can be accessed), you need to dynamically trigger the establishment of the BAS interface through non-unicast access packets. Backup peer, the non-unicast access message can be the user's access protocol related message, such as ARP message or DHCP (Dynamic Host Configuration Protocol, Dynamic Host Configuration Protocol) message, etc.; correspondingly establish a backup The peer process can include:

When the master management device receives a non-unicast access packet of a VLAN for the first time, it will judge whether the VLAN has established a backup peer. If the VLAN has not established a backup peer, it will initiate a connectivity check and establish a backup peer. peers, the corresponding connectivity detection process can also be realized by cooperating with the detection message of the management slave device, or it can also be realized through the detection message specially initiated; One or more strategies, such as local attribute, interface rate matching, uplink and downlink traffic balance, address pool balance, and VLAN number balance, generate the master-backup relationship of the backup peer and notify the management slave device;

Further, when the management slave device receives a non-unicast access message of a certain VLAN for the first time, if the VLAN has not established a backup peer, a connection is initiated on the interface that received the non-unicast access message Connectivity detection, if the detection result is connected, it indicates that the management master device can complete the corresponding connectivity detection work, at this time, the non-unicast access packet can be discarded; if the connectivity detection fails, the management slave device VLAN does access processing and notifies the management master device.

In addition, in the embodiment of the present invention, since the network topology and VLAN configuration may change, the management master device may also periodically initiate the The above link layer connectivity detection, when it is determined that the established backup peer fails, then re-initiate the link layer connectivity detection for the interface of the failed backup peer, and provide a backup for the failed backup peer The interface of the peer establishes a new backup peer, wherein the failure of the backup peer means that the result of the connectivity detection is that there is no connectivity between the active interface and the backup interface included in the backup peer. That is to say, the management master device can also perform connectivity detection periodically to adapt to the topology changes of the lower-layer switching network. When it is found that the backup peer is invalid (for example, three detection cycles are invalid), the interface contained in the original backup peer starts New connectivity detection process, when new connectivity is detected (that is, it is detected that the new interface is connected to the interface contained in the original backup peer), update the interface information contained in the original backup peer (that is, information about the active interface and the standby interface); wherein, the length of the detection cycle can be determined according to the topology of the network and the change interval of the VLAN configuration, for example, it can be set to 60 seconds, etc.).

Step 34, select and switch the corresponding active interface and standby interface based on the established backup peer;

After determining the active interface and the standby interface contained in the backup peer, the active interface and the standby interface can also be changed according to the triggering of the event, that is, the original active interface may become a standby interface, and the standby interface may also be become the primary interface. Specifically, first, the management slave device collects the interface status of the local machine through event-triggered reporting and other means, and obtains traffic statistics at the granularity of the outer VLAN through active periodic acquisition, and notifies the management master device; after that, the management master device can according to The status of each device, interface status, and uplink and downlink traffic balance are selected for master and backup. If the master interface and backup interface contained in the established backup peer change, the new master interface will send free ARP packets. Notify the lower-layer switch to direct the service flow to the new active interface (that is, the original standby interface) to switch between the active interface and the standby interface; Initiating active master-standby switchover due to balance can be specifically designed as an optional configuration (for example, if the traffic imbalance exceeds a predetermined value to trigger the switchover, and the predetermined value is configurable), the default is no switchover, which can prevent traffic changes from causing frequent master-standby switchover ;

Furthermore, when the device detects that the peer device is DOWN (failed), a device-level active-standby switchover will occur, that is, all the standby interfaces of the unfailed device will be upgraded to active interfaces, and a free ARP message will be sent to notify the lower-layer switch interface Direct the service flow to the backup interface in the device that has not failed; after that, when the faulty device returns to normal, re-establish the connection at both ends, re-select the management master device and the management slave device and establish a corresponding backup peer, and synchronize the user Back up data and user information, etc., and elect the active and standby interfaces according to the active-standby selection strategy, select the determined active interface and send a free ARP message to notify the lower layer switch to direct the service flow to the selected active interface.

In the above description for the embodiments of the present invention, only the process of automatically discovering protection links and realizing active/standby switchover according to the configuration of the topology is emphatically described. For user data backup and BRAS address pool allocation and routing involved in the switchover process The backup processing such as publishing can be performed in a processing manner in the prior art, so no special description is made.

It can be seen from the above technical solutions provided by the embodiments of the present invention that the embodiments of the present invention have the advantages of simple deployment, flexible selection of backup strategies and granularity, strong adaptability to existing networks, and the like. Moreover, using the technical solutions provided by the embodiments of the present invention to realize corresponding dual-machine hot backup can also greatly reduce network operation costs without increasing network construction costs.

Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be implemented through computer programs to instruct related hardware, and the programs can be stored in a computer-readable storage medium. During execution, it may include the processes of the embodiments of the above-mentioned methods. Wherein, the storage medium may be a magnetic disk, an optical disk, a read-only memory (Read-Only Memory, ROM) or a random access memory (Random Access Memory, RAM), and the like.

The embodiment of the present invention also provides a device for determining the configuration information of dual-system hot backup, the device is set in the network device as the management master device, as shown in Figure 4, the device may specifically include the following units:

The connectivity detection unit 41 is configured to initiate a link layer connectivity detection to a network device serving as a management slave device, wherein the management master device and the management slave device are two network devices capable of mutual backup;

A backup peer establishment unit 42, configured to establish a backup peer according to the result of the link layer connectivity detection of the connectivity detection unit 41, and determine that the backup peers include masters that can back up each other. interface and backup interface;

The backup peer information sending unit 43 is configured to notify the management slave device of the information about the active interface and the backup interface included in the backup peer established by the backup peer establishment unit 42 .

Further, as shown in FIG. 5, the connectivity detection unit 41 may include a static connectivity detection subunit 411, configured to actively initiate The link layer connectivity detection.

Optionally, as shown in FIG. 5 , the connectivity detection unit 41 may also include a dynamic connectivity detection subunit 412, configured to, when the management master device receives a non-unicast access packet of a virtual local area network, If the virtual local area network has not established the backup peer, initiate the link layer connectivity detection.

As shown in Figure 5, the device for determining the configuration information of the dual-system hot backup provided by the embodiment of the present invention may further include a connectivity monitoring unit 44, which is used to periodically target the established backup The peer initiates the link layer connectivity detection, and when it is determined that the established backup peer fails, the link layer connectivity detection is re-initiated for the interface of the failed backup peer, and the failure The interface of the backup peer establishes a new backup peer, wherein the failure of the backup peer means that the result of the connectivity detection is that the backup peer includes a primary interface and a backup interface. Not connected.

In the device for determining the configuration information of dual-machine hot backup, as shown in FIG. 5 , the backup peer establishment unit 42 may specifically include a backup peer determination subunit 421 and an active/standby selection subunit 422, wherein:

A backup peer determination subunit 421, configured to establish a backup peer according to the result of the link layer connectivity detection by the connectivity detection unit;

The active/standby selection subunit 422 is used to select the local attributes, interface rate matching, uplink and downlink traffic balance degree, address pool balance degree or virtual local area network quantity balance degree according to the local attribute of the interface connecting the management master device and the lower layer network device. One or more items determine the active interface and standby interface included in the backup peer that can back up each other, wherein the local attribute is used to pre-configure and designate a certain interface as the active interface of the backup peer where it is located. interface, or, the local attribute may also be used to pre-configure and designate a certain interface as the backup interface in the backup peer where it is located.

The above-mentioned device provided by the embodiment of the present invention enables the process of determining the configuration information of the dual-system hot backup to have the advantages of simple configuration and deployment, flexible selection of backup strategies and granularity, strong adaptability to existing networks, and the like. Moreover, the network operation cost can be greatly reduced without increasing the network construction cost.

It should be noted that, the specific implementation manners of the functions implemented by each processing unit included in the above apparatus have been described in detail in the foregoing embodiments, so details will not be repeated here.

The above-mentioned apparatus provided by the embodiment of the present invention can be specifically set in a network device, such as a BAS device, so that the above-mentioned processing function can be completed when the network device is used as a management master device. Specifically, the structure of the network device is shown in FIG. 6, which may include: a memory 61, a transmitter 62, and a receiver 63, and a processor 64 connected to the memory 61, the transmitter 62, and the receiver 63 respectively, and the memory 61 is used to store a set of program codes, and the processor 64 is used to call the program stored in memory 61 to perform the following operations:

The sender 62 initiates link layer connectivity detection to the network device as the management slave device, determines the result of the link layer connectivity detection according to the information received by the receiver 63, and determines the result of the link layer connectivity detection according to the link layer connectivity detection result. As a result, a backup peer is established, and the main interface and the backup interface that can be mutually backed up by the backup peer are determined; and the information of the main interface and the backup interface included by the backup peer is also used The management slave device is notified through the transmitter 62 .

Those skilled in the art can clearly understand that for the convenience and brevity of description, only the division of the above-mentioned functional units is used as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional units according to needs. The internal structure of the device is divided into different functional units to complete all or part of the functions described above. For the specific working process of the devices and units described above, reference may be made to the corresponding process in the foregoing method embodiments, and details are not repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system and method can be implemented in other ways. For example, the system embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of units may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit. The above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.

The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person familiar with the technical field can easily conceive of changes or changes within the technical scope disclosed in the present invention. Replacement should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims (8)

1. A method for determining configuration information of dual-machine hot backup, characterized in that, comprising: The network device as the management master device initiates a link layer connectivity detection to the network device as the management slave device, and establishes a backup peer according to the result of the link layer connectivity detection, and determines that the backup peer includes A master interface and a backup interface that can back up each other, wherein the management master device and the management slave device are two network devices that can back up each other; The management master device notifies the management slave device of the information of the master interface and the backup interface included in the backup peer; Wherein, the step of determining the active interface and the backup interface included in the backup peer that can back up each other includes: The master management device according to the local attribute of the interface in the backup peer, the rate matching of the interface in the backup peer, the balance degree of uplink and downlink traffic, the balance degree of address pool or the balance degree of virtual local area network One or more of them determine the active interface and backup interface included in the backup peer that can back up each other, wherein the local attribute is used to pre-configure and specify a certain interface as the backup peer in which it is located. Active interface or standby interface. 2. The method according to claim 1, wherein the step of initiating link layer connectivity detection comprises: The master management device actively initiates the link layer connectivity detection according to the outer virtual local area network configuration information of the interface connecting itself to the lower layer network device. 3. The method according to claim 1, wherein the step of initiating link layer connectivity detection comprises: When the master management device receives the non-unicast access message of the virtual local area network, if the virtual local area network has not established the backup peer, it initiates the link layer connectivity detection. 4. according to the method described in claim 1,2 or 3, it is characterized in that, described method also comprises: The management master device periodically initiates the link layer connectivity detection for the established backup peer according to a predetermined time interval, and when it is determined that the established backup peer fails, it The interface of the backup peer re-initiates the link layer connectivity detection, and establishes a new backup peer for the interface of the failed backup peer, wherein the failure of the backup peer refers to the failure of the backup peer The result of the connectivity detection is that there is no connectivity between the active interface and the standby interface included in the backup peer. 5. A device for determining configuration information of dual-machine hot backup, characterized in that, the device is set in the network device as the management master device, and the device includes: A connectivity detection unit, configured to initiate a link layer connectivity detection to a network device serving as a management slave device, wherein the management master device and the management slave device are two network devices that can back up each other; A backup peer establishment unit, configured to establish a backup peer according to the result of the link layer connectivity detection of the connectivity detection unit, and determine the active interfaces that can be backed up by each other included in the backup peer and alternate interfaces; a backup peer information sending unit, configured to notify the management slave device of the information of the active interface and the backup interface included in the backup peer established by the backup peer establishment unit; Wherein, the backup peer establishment unit includes: A backup peer determination subunit, configured to establish a backup peer according to the result of the link layer connectivity detection by the connectivity detection unit; The active/standby selection subunit is configured to use the local attribute of the interface in the backup peer, the rate matching of the interface in the backup peer, the balance degree of uplink and downlink traffic, the balance degree of address pool or the virtual local area network One or more items in the quantity balance degree determine the active interface and the backup interface included in the backup peer that can back up each other, wherein the local attribute is used to pre-configure a specific interface as the backup peer where it is located active interface or standby interface in the body. 6. The device according to claim 5, wherein the connectivity detection unit comprises a static connectivity detection subunit, configured to configure an outer virtual local area network according to the interface connecting the management master device and the lower-layer network device The information actively initiates the link layer connectivity detection. 7. The device according to claim 5, wherein the connectivity detection unit comprises a dynamic connectivity detection subunit, configured to receive a non-unicast access packet of a virtual local area network when the main management device receives , if the virtual local area network has not established the backup peer, initiate the link layer connectivity detection. 8. The device according to claim 5, 6 or 7, characterized in that the device further comprises: The connectivity monitoring unit is configured to periodically initiate the link layer connectivity detection for the established backup peer according to a predetermined time interval, and when it is determined that the established backup peer fails, then Re-initiating the link layer connectivity detection for the interface of the failed backup peer, and establishing a new backup peer for the interface of the failed backup peer, wherein the failure of the backup peer is It means that the result of the connectivity detection is that there is no communication between the active interface and the standby interface included in the backup peer.