WO2021083375A1 - 检测链路状态的方法及装置 - Google Patents

检测链路状态的方法及装置 Download PDF

Info

Publication number
WO2021083375A1
WO2021083375A1 PCT/CN2020/125670 CN2020125670W WO2021083375A1 WO 2021083375 A1 WO2021083375 A1 WO 2021083375A1 CN 2020125670 W CN2020125670 W CN 2020125670W WO 2021083375 A1 WO2021083375 A1 WO 2021083375A1
Authority
WO
WIPO (PCT)
Prior art keywords
link
logical
network device
bundled physical
interface
Prior art date
Application number
PCT/CN2020/125670
Other languages
English (en)
French (fr)
Inventor
王丽娜
张耀坤
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP20880876.6A priority Critical patent/EP4044510A4/en
Publication of WO2021083375A1 publication Critical patent/WO2021083375A1/zh
Priority to US17/730,951 priority patent/US20220255831A1/en

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
    • H04L43/0805—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/70—Routing based on monitoring results
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/06—Management of faults, events, alarms or notifications
    • H04L41/0631—Management of faults, events, alarms or notifications using root cause analysis; using analysis of correlation between notifications, alarms or events based on decision criteria, e.g. hierarchy, tree or time analysis
    • H04L41/065—Management of faults, events, alarms or notifications using root cause analysis; using analysis of correlation between notifications, alarms or events based on decision criteria, e.g. hierarchy, tree or time analysis involving logical or physical relationship, e.g. grouping and hierarchies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/08—Configuration management of networks or network elements
    • H04L41/0893—Assignment of logical groups to network elements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/12—Discovery or management of network topologies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
    • H04L43/0805—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability
    • H04L43/0811—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability by checking connectivity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/10—Active monitoring, e.g. heartbeat, ping or trace-route
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/24—Multipath
    • H04L45/245—Link aggregation, e.g. trunking
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/50—Reducing energy consumption in communication networks in wire-line communication networks, e.g. low power modes or reduced link rate

Definitions

  • This application relates to the field of communications, and in particular to a method and device for detecting link status.
  • two network devices are connected by a physical link, and the physical link can carry one or more logical links.
  • the network device includes a routing module corresponding to each logical link. The routing module corresponding to the logical link is used to maintain the routing information corresponding to the logical link.
  • the routing module corresponding to the logical link may need to request the network device to establish a logical link detection module for it.
  • the logical link detection module is used to detect the link status of the logical link and send the detected link to the routing module.
  • the link status of the logical link is used to detect the link state of the logical link.
  • the routing module receives the link state, and when the link state is abnormal, performs route convergence or route reselection processing.
  • a physical link often carries multiple logical links, so the network device will establish a logical link detection module for the routing module corresponding to each logical link, that is to say, multiple logical link detection modules will run on the network device. Occupies a lot of computing resources of network equipment. When each logical link detection module detects the state of the logical link, it will establish a session between the two network devices, which also occupies a lot of network resources.
  • the present application provides a method and device for detecting link status, which can reduce the occupation of computing resources of network equipment and the occupation of network resources of communication networks.
  • the technical solutions are as follows:
  • the present application provides a method for detecting the link status.
  • the first network device detects the link status of the bundled physical link, and the bundled physical link is the first network device and the second network device. Links between network devices.
  • the first network device determines N logical links carried on the bundled physical link according to the link information of the bundled physical link, where N is an integer greater than or equal to 1.
  • the first network device skips detecting the link state of the N logical links, and sets the link state of the N logical links to the link state of the bundled physical link. In this way, it is only necessary to detect the link status of a bundled physical link, and the link status of N logical links can be obtained. There is no need to detect the link status of each logical link of the N logical links, thereby reducing The computing resources of the network equipment are reduced, and the network resources of the communication network are also reduced.
  • M first logical interfaces located on the first bundled physical interface are determined, where M is an integer greater than or equal to N, and the first bundled physical interface It is the interface connected to the bundled physical link on the first network device.
  • the realization determines the N logical links carried on the bundled physical link.
  • M first logical interfaces that are located on the first bundled physical interface and have addresses are determined.
  • the link information of M logical links is obtained; according to the link information of the M logical links and the link information of the bundled physical link, it is determined that the physical interface is located in the second bundle
  • the N second logical interfaces on the upper side, the second bundled physical interface is an interface connected to the bundled physical link on the second network device; the logical link connected to the N second logical interface is selected.
  • the first network device is connected to the second network device through other network devices, there is at least one logical link connected to the first logical interface, and one of the logical links is carried on the bundled physical link.
  • the first network device is determined The N second logical interfaces on the two bundled physical interfaces, and because the second bundled physical interface is the bundled physical interface connected to the bundled physical link on the second network device, the logical link with the N second logical interface
  • the path is a logical link carried on the bundled physical link, thereby improving the accuracy of determining the logical link located on the bundled physical link.
  • the route corresponding to each logical link is calculated separately according to the link state of each logical link of the N logical links. Since the link state of each logical link is the link state of the bundled physical link, the route of each logical link can be calculated based on the link state of the bundled physical link, so there is no need to check each logical link Link status of the road.
  • a diagnostic message is sent to the second network device, the diagnostic message includes a detection indication, and the detection indication is used to instruct the second network device to detect the link status of the bundled physical link and to The link state of the N logical links sets the link state of the bundled physical link.
  • the second network device only needs to detect the link status of a bundled physical link, and can obtain the link status of N logical links, and does not need to detect the link of each logical link of the N logical links. State, thereby reducing the occupation of computing resources of the network equipment, and also reducing the occupation of network resources of the communication network.
  • the query mode flag field of the diagnostic message includes the detection indication.
  • the present application provides a device for detecting link status, which is used to execute the first aspect or the method in any one of the possible implementation manners of the first aspect.
  • the device includes a unit for executing the method of the first aspect or any one of the possible implementation manners of the first aspect.
  • the present application provides a device for detecting link status, the device including: a processor, a memory, and a transceiver.
  • the processor, the memory and the transceiver may be connected through a bus system.
  • the memory is configured to store one or more programs
  • the processor is configured to execute one or more programs in the memory, so that the apparatus completes the first aspect or the method in any possible implementation manner of the first aspect.
  • the present application provides a computer-readable storage medium with program code stored in the computer-readable storage medium, which, when run on a computer, enables the computer to execute the first aspect or any possible implementation of the first aspect.
  • the method in the way.
  • this application provides a computer program product containing program code, which when running on a computer, causes the computer to execute the method in the first aspect or any possible implementation of the first aspect.
  • FIG. 1 is a schematic diagram of a network architecture provided by an embodiment of the present application.
  • FIG. 2 is a schematic diagram of the relationship between a bundled physical link and a member link provided by an embodiment of the present application
  • FIG. 3 is a schematic diagram of another network architecture provided by an embodiment of the present application.
  • FIG. 4 is a flowchart of a method for detecting link status provided by an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a diagnostic message provided by an embodiment of the present application.
  • FIG. 6 is a flowchart of another method for detecting link status provided by an embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of a device for detecting link status provided by an embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of another device for detecting link status provided by an embodiment of the present application.
  • this application provides a network architecture, including:
  • the first network device 1 and the second network device 2 includes at least one first bundled physical interface 3, and the second network device 2 includes at least one second bundled physical interface 4.
  • the first network device 1 and the second network device 2 may be connected by a bundled physical link 5.
  • the bundled physical link 5 connects a first bundled physical interface 3 on the first network device 1 and a second bundled physical interface 4 on the second network device 2.
  • the first bundled physical interface 3 includes at least one member interface
  • the second bundled physical interface 4 also includes at least one member interface
  • the bundled physical link 5 includes at least one member link.
  • the member link connects one member interface in the first bundle physical interface 3 and one member interface in the second bundle physical interface 4.
  • the first bundled physical interface 3 includes a first member interface 31 and a second member interface 32
  • the second bundled physical interface 4 includes a third member interface 41 and a fourth member interface 42
  • the bundled physical link 5 includes a first member link 51 and a second member link 52.
  • the first member link 51 connects the first member interface 31 and the third member interface 41.
  • the second member link 52 connects the second member interface 32 and the fourth member interface 42.
  • the first network device 1 and the second network device 2 may be directly connected, and the communication between the first network device 1 and the second network device 2 does not need to be forwarded through other network devices.
  • the first network device 1 is connected to the second network device 2 through at least one other network device, and the communication between the first network device 1 and the second network device 2 is forwarded through at least one other network device.
  • a first bundled physical interface 3 of the first network device 1 passes through the third network device 6 and the second network device 2, and the first network device 1 can also pass through the third network device 6 in addition to the second network device.
  • a network device other than the device 2 is connected, for example, as shown in FIG. 3, it is also connected to a fourth network device 7.
  • the first network device 1 may be a device such as a router or a switch
  • the second network device 2 may be a device such as a router or a switch
  • the third network device 6 may be a router or switch
  • the fourth network device 7 may be a router or switch.
  • the first bundled physical interface 3 and the second bundled physical interface 4 may be Ethernet interfaces, etc., for example, Ethernet Link aggregation (ethernet-trunk, Eth-trunk) port, etc.
  • the first network device 1 generates at least one first logical interface on the first bundled physical interface 3, and the second network device 2 generates at least one second logical interface on the second bundled physical interface 4.
  • At least one logical link may be established between the first network device 1 and the second network device 2, and each logical link passes through a first logical interface on the first bundled physical interface 3 and a second bundled physical interface 4 A second logical interface, and the at least one logical link is carried on the bundled physical link 5.
  • the first network device 1 generates two first logical interfaces on the first bundled physical interface 3, namely the first logical interface A and the first logical interface B
  • the second network device 2 generates two first logical interfaces on the second bundled physical interface 4.
  • Two second logical interfaces are generated on the above, which are the second logical interface C and the second logical interface D, respectively.
  • a first logical link is established between the first logical interface A on the first bundled physical interface 3 and the second logical interface C on the second bundled physical interface 4, and the first logical link on the first bundled physical interface 3 is established.
  • a second logical link is established between the interface B and the second logical interface D on the second bundled physical interface 4, and the first logical link and the second logical link are carried on the bundled physical link 5.
  • the first bundled physical interface 3 may have its own first identifier, and each first logical interface on the first bundled physical interface 3 may have its own first identifier.
  • the corresponding relationship between the first identifier of the binding physical interface and the first identifier of the logical interface is stored in the first network device 1.
  • the first network device 1 stores the first identifier of the first bundled physical interface 3 and the first identifier of each first logical interface on the first bundled physical interface 3 in the first identifier and logical In the corresponding relationship of the first identifier of the interface.
  • the first network device 1 may assign the first identification IP1 of the first physical interface 3 bundled, the first identification IPA of the first logical interface A on the first physical interface 3, and the first identification IPB of the first logical interface B.
  • the correspondence is stored in the corresponding relationship between the first identifier of the bundled physical interface and the first identifier of the logical interface as shown in Table 1 below.
  • Bundle the first identifier of the physical interface The first identifier of the logical interface IP1 IPA, IPB ... ...
  • the second bundled physical interface 4 may have its own first identifier, and each second logical interface on the second bundled physical interface 4 may have its own first identifier.
  • the second network device 2 also stores the corresponding relationship between the first identifier of the bound physical interface and the first identifier of the logical interface. In other words, the second network device 2 stores the first identifier of the second physical interface 4 and the first identifier of each second logical interface on the second physical interface 4 in the first identifier and the first identifier of the physical interface 4, respectively. In the corresponding relationship of the first identifier of the logical interface.
  • the second network device 2 may assign the first identification IP2 of the second physical interface 4, the first identification IPC of the second logical interface C on the second physical interface 4, and the first identification IPD of the second logical interface D.
  • the correspondence is stored in the corresponding relationship between the first identifier of the bundled physical interface and the first identifier of the logical interface as shown in Table 2 below.
  • Bundle the first identifier of the physical interface The first identifier of the logical interface IP2 IPC, IPD ... ...
  • the foregoing first identifier is a protocol (Internet protocol, IP) address for interconnection between networks, etc.
  • IP Internet protocol
  • the first bundled physical interface 3 may have its own second identifier, the first identifier of the first bundled physical interface 3, and the first identifier of each first logical interface on the first bundled physical interface 3. Both correspond to the second identifier of the first bundled physical interface 3.
  • the second bundled physical interface 4 may have its own second identification, the first identification of the second bundled physical interface 4, and the first identification of each second logical interface on the second bundled physical interface 4. Both correspond to the second identifier of the second bundled physical interface 4.
  • the second identifier of the first bundled physical interface 3 is the same as the second identifier of each logical interface on the first bundled physical interface 3 (for example, has the same MAC address), and the second identifier of the second bundled physical interface 4 is the same as the second identifier of each logical interface.
  • the second identifiers of the second logical interfaces on the bundled physical interface 4 are the same.
  • the corresponding relationship between the first identifier and the second identifier is stored in the first network device 1.
  • the first network device 1 can obtain the first identifier of the second bundled physical interface 4 of the second network device 2, the first identifier of each second logical interface on the second bundled physical interface 4, and the second bundled physical interface
  • the second identifier of 4 is correspondingly stored in the corresponding relationship between the first identifier and the second identifier.
  • the first network device 1 assigns the first identification IP2 of the second physical interface 4, the first identification IPC of the second logical interface C on the second physical interface 4, and the first identification IPD of the second logical interface D, And the second identifier MAC2 of the second bundled physical interface 4 is correspondingly stored in the corresponding relationship between the first identifier and the second identifier as shown in Table 3 below.
  • the corresponding relationship between the first identifier and the second identifier is also stored in the second network device 2.
  • the second network device 2 can obtain the first identifier of the first bundled physical interface 3 of the first network device 1, the first identifier of each first logical interface on the first bundled physical interface 3, and the first bundled physical interface
  • the second identifier of 3 is correspondingly stored in the corresponding relationship between the first identifier and the second identifier.
  • the second network device 2 assigns the first identification IP1 of the first physical interface 3, the first identification IPA of the second logical interface A on the first physical interface 3, and the first identification IPB of the second logical interface B, And the second identifier MAC1 of the first bundled physical interface 3 is correspondingly stored in the corresponding relationship between the first identifier and the second identifier as shown in Table 4 below.
  • the above-mentioned second identifier is a media access control (media access control, MAC) address, etc.
  • the first network device 1 may include a first physical link detection module corresponding to the bundled physical link 5, and the second network device 2 may also include a second physical link detection module corresponding to the bundled physical link 5.
  • the first routing module corresponding to each logical link is included on the first network device 1, and each logical link corresponding to each logical link is also included on the second network device 2.
  • the second routing module For each logical link on the bundled physical link 5, the first routing module corresponding to each logical link is included on the first network device 1, and each logical link corresponding to each logical link is also included on the second network device 2.
  • the second routing module for each logical link on the bundled physical link 5, the first routing module corresponding to each logical link is included on the first network device 1, and each logical link corresponding to each logical link is also included on the second network device 2.
  • the first physical link detection module is used to detect the link status of the bundled physical link 5.
  • the first routing module is used to maintain the The routing information of the logical link.
  • the routing information can include at least one of the routing target address, routing next hop information, routing outgoing interface address, or routing priority.
  • the routing information maintained by the first routing module is based on the first network device 1 This logical link is generated.
  • the second physical link detection module is used to detect the link status of the bundled physical link 5.
  • the second routing module is used to maintain the The routing information of the logical link.
  • the routing information maintained by the second routing module is generated by the second network device 1 based on the logical link.
  • the first network device 1 includes a routing table, and the routing table includes routing information maintained by each first routing module in the first network device 1. Each routing information in the routing table corresponds to a logical link.
  • the second network device 2 also includes a routing table, and the routing table includes routing information maintained by each second routing module in the second network device 2. Each routing information in the routing table also corresponds to a logical link.
  • the routing protocol adopted by the first routing module or the second routing module may be an intermediate system to intermediate system (ISIS) or an open shortest path first (OSPF) or the like.
  • ISIS intermediate system to intermediate system
  • OSPF open shortest path first
  • the operation of the first routing module to maintain routing information may include: the first routing module publishes the routing information to neighbors of the first network device 1 through the logical link corresponding to the routing information, and the first routing module updates the routing information The routing priority included, or the first routing module modifies one or more of the routing next hop information included in the routing information.
  • the operation of maintaining routing information by the second routing module may also be one or more of the above operations.
  • each first routing module needs the link status of its corresponding logical link, so the link status of each logical link connected to the first network device 1 needs to be obtained, in order to avoid detection
  • the link status of each logical link can be determined for each logical link carried on the bundled physical link 5 connected to the first network device 1, and the link status of each logical link is set to the bundled physical link In this way, the link status of each logical link carried on the bundled physical link 5 does not need to be detected.
  • the detailed process can be referred to the embodiment shown in FIG. 4 or FIG. 6, which will not be described in detail here.
  • each second routing module needs the link status of its corresponding logical link, so the link status of each logical link connected to the second network device 2 needs to be obtained.
  • each logical link carried on the bundled physical link 5 connected to the second network device 2 can be determined, and the link status of each logical link can be set to the bundle The link status of the physical link 5, so there is no need to detect the link status of each logical link carried on the bundled physical link 5.
  • the detailed process can be referred to the embodiment shown in FIG. 4 or FIG. 6, which will not be described in detail here.
  • the first physical link detection module and each first routing module are different processes or threads running in the first network device 1.
  • the second physical link detection module and each second routing module are different processes or threads running in the second network device 2.
  • the first physical link detection module or the second physical link detection module may be link bundle bidirectional forwarding detection (link bundle BFD).
  • link bundle BFD link bundle bidirectional forwarding detection
  • an embodiment of the present application provides a method for detecting link status.
  • the method can be applied to any network architecture shown in Figs. 1 to 3, including:
  • Step 401 The first network device determines the logical link corresponding to the first routing module when the first routing module requests to establish the logical link detection module.
  • the first routing module may trigger a request to the first network device Command to request the first network device to establish a logical link detection module for it.
  • the logical link is a logical link between the first network device and the second network device.
  • the request command triggered by the first routing module includes the first link information of the logical link, the first link information includes the first identifier of the first logical interface connected to the logical link, and the first logical interface is the first Interface in network equipment.
  • the first link information may further include a first identifier of a second logical interface connected to the logical link, and the second logical interface is an interface on the second network device.
  • the first network device may obtain the first link information from the request command, and determine the logical link according to the first link information.
  • the first network device is directly connected to the second network device, and the first link information obtained by the first network device includes the first network device.
  • the first link information obtained by the first network device may include the first identifier of the second logical interface, or may not include the first identifier of the second logical interface. the reason is:
  • the first bundled physical interface of the first network device is connected to a second network device.
  • each first logical interface on the first bundled physical interface may be connected to a logical link
  • the logical link is a logical link between the first network device and the second network device.
  • the logical link can be determined by the first identifier of the first logical interface located on the first network device, so the first link information acquired by the first network device may include the first identifier of the first logical interface.
  • the first network device obtains
  • the first link information includes the first identifier of the first logical interface and the first identifier of the second logical interface. the reason is:
  • the first bundled physical interface of the first network device is connected to at least one second network device through other network devices.
  • each first logical interface on the first bundled physical interface is connected to at least one logical link
  • the at least one logical link is a logical link between the first network device and the at least one second network device. link.
  • the logical link needs to be determined by the first identification of the first logical interface on the first network device and the first identification of the second logical interface on the second network device, so the first link obtained by the first network device
  • the path information may include the first identifier of the first logical interface and the first identifier of the second logical interface.
  • Step 402 The first network device detects the link status of the bundled physical link, and obtains first link information of the bundled physical link, where the bundled physical link is a link connected to the first network device.
  • the first link information of the bundled physical link includes at least the first identifier of the first bundled physical interface connected to the bundled physical link, and the first bundled physical interface is located on the first network device.
  • the first link information of the bundled physical link further includes a first identifier of a second bundled physical interface connected to the bundled physical link, and the second bundled physical interface is located on the second network device.
  • the first network device may include at least one first physical link detection module, and the first physical link detection module includes the corresponding first link information of the bundled physical link.
  • the first network device selects a first physical link detection module from each of the first physical link detection modules included therein. It is determined that the selected first physical link detection module corresponds to the bundled physical link, the selected first physical link detection module detects the link status of the bundled physical link, and the selected first physical link detection module To obtain the first link information of the bundled physical link.
  • the first link information acquired by the first network device includes the first identifier of the first bundled physical interface connected to the bundled physical link.
  • the first link information may further include a first identifier of a second bundled physical interface connected to the bundled physical link, and the second bundled physical interface is an interface on the second network device.
  • the first network device is directly connected to the second network device, and the first link information obtained by the first network device includes the first network device.
  • the first link information obtained by the first network device may include the first identifier of the second bundled physical interface, or may not include the first identifier of the second bundled physical interface. the reason is:
  • the first bundled physical interface of the first network device is connected to a second network device.
  • the first bundled physical interface may be connected to a bundled physical link
  • the bundled physical link is a bundled physical link between the first network device and the second network device.
  • the bundled physical link can be determined by the first identifier of the first bundled physical interface located on the first network device, so the first link information obtained by the first network device may include the first identifier of the first bundled physical interface, namely can.
  • the first network device obtains
  • the first link information includes the first identifier of the first bundled physical interface and the first identifier of the second bundled physical interface. the reason is:
  • the first bundled physical interface of the first network device is connected to at least one second network device through other network devices.
  • each first bundled physical interface on the first bundled physical interface is connected to at least one bundled physical link, and the at least one bundled physical link is between the first network device and the at least one second network device.
  • the first link information includes the first identifier of the first bundled physical interface and the first identifier of the second bundled physical interface.
  • Step 403 The first network device determines, according to the first link information of the bundled physical link, whether the logical link is carried on the bundled physical link, and if the logical link is carried on the bundled physical link, then Step 404 is executed.
  • the first network device obtains each second physical interface located on the first physical interface bundle from the corresponding relationship between the first identification of the logical interface and the first identification of the physical interface that is bundled according to the first identification of the first physical interface that is bundled.
  • a first identifier of a logical interface and then determine each first logical interface located on the first bundled physical interface based on the first identifier of each first logical interface, if each first logical interface includes the first logical interface connected to the logical link
  • a logical interface determines that the logical link is carried on the bundled physical link. If each first logical interface does not include the first logical interface connected to the logical link, it is determined that the logical link is not carried on the bundled physical link.
  • the first link information on the bundled physical link further includes the first identifier of the second bundled physical interface
  • the first link information on the logical link further includes the first identifier of the second logical interface
  • the first network device after determining that each of the first logical interfaces located on the first bundled physical interface includes the first logical interface connected to the logical link, the first network device also determines that the first logical interface is connected to the logical link according to the bundled physical link.
  • the first link information of the logical link and the first link information of the logical link determine whether the second link interface connected to the logical link is located on the second bundled physical interface connected to the bundled physical link. If the second logical interface is located on the second bundled physical interface, it is determined that the logical link is carried on the bundled physical link.
  • the first network device obtains the second identifier of the second bundled physical interface from the corresponding relationship between the first identifier and the second identifier according to the first identifier of the second bundled physical interface, and obtains the second identifier of the second bundled physical interface according to the logical link connected
  • the first identifier of the second logical interface obtains the second identifier of the bundled physical interface corresponding to the second logical interface from the correspondence between the first identifier and the second identifier.
  • the second network device selects a first physical link detection module from the unselected first physical link detection modules, Then, perform the operations of steps 402 and 403 again. If after all the first physical link detection modules in the second network device are selected, the bundled physical link carrying the logical link is not determined, indicating that there is no corresponding detection module for detecting the logical link in the first network device. The first physical link detection module of the bundled physical link, so the first network device can establish a logical link detection module for the first routing module, and the logical link detection module is used to detect the link status of the logical link.
  • the first network device obtains the link status of the bundled physical link detected by the first physical link detection module, and the link status is In a normal state, the following operation of step 404 is performed.
  • the first network device may establish a logical link detection module for the first routing module.
  • Step 404 The first network device sends a diagnostic message to the second network device through the logical link, where the diagnostic message includes a detection instruction.
  • the detection indication is used to instruct the second network device to set the link state of the logical link to the link state of the bundled physical link.
  • the diagnostic message includes the following fields, respectively version number (version, Vers), diagnostic word (diagnostic, Diag), status (status, Sta), modification Flag (pull, P), response flag (final, F), control plane independent flag (control plane independent, C), authentication flag (authentication present, A), query mode flag (demand, D), detection time multiple ( Detect Mult, multipoint (M), length (Length), local discriminator (My Discriminator), peer discriminator (Your Discriminator), the minimum BFD control message transmission interval that the local end wants to use (Desired Min TX Interval), the minimum BFD control message reception interval supported by the local end (Required Min RX Interval), and the minimum BFD echo message reception interval supported by the local end (Required Min Echo RX Interval).
  • the diagnostic message includes a query mode flag field (D in FIG. 5 represents a query mode flag field), and the query mode flag field includes a detection indication.
  • the query mode flag field can indicate 32 values. The 32 values are 0, 1, 2, ..., 31. Among them, 9 to 31 are reserved values. In this step, you can choose from 9 to 31. A numerical value is used as a binding indicator.
  • the first logical link of the first network device sends a diagnostic message to the second network device, and the diagnostic message includes a detection indication.
  • Step 405 The second network device receives the diagnostic message from the logical link, and determines the logical link under the trigger of the detection instruction included in the diagnostic message.
  • the second network device may also determine the second routing module corresponding to the logical link, and obtain the second link information of the logical link from the second routing module.
  • the second link information may include The first identifier of the second logical interface connected to the logical link may also include the first identifier of the first logical interface connected to the logical link.
  • Step 406 The second network device detects the link status of the bundled physical link, and obtains second link information of the bundled physical link, where the bundled physical link is a link connected to the second network device.
  • the second link information includes at least the first identifier of the second bundled physical interface connected to the bundled physical link.
  • the second network device may include at least one second physical link detection module.
  • the second network device selects a second physical link detection module from each second physical link detection module included in the second network device. Determine the bundled physical link corresponding to the selected second physical link detection module, detect the link status of the bundled physical link through the selected second physical link detection module, and detect from the selected second physical link
  • the module obtains the second link information of the bundled physical link corresponding to the second physical link detection module.
  • the second link information includes the first identifier of the second bundled physical interface connected to the bundled physical link.
  • the second link information may also include the first identifier of the first bundled physical interface connected to the bundled physical link.
  • Step 407 The second network device determines whether the logical link is carried on the bundled physical link according to the second link information of the bundled physical link, and if the logical link is carried on the bundled physical link, execute Step 408.
  • the second network device obtains each of the second physical interfaces on the second physical interface from the corresponding relationship between the first identification of the logical interface and the first identification of the physical interface that is bundled according to the first identification of the second physical interface.
  • the first identifier of the second logical interface determines each second logical interface located on the second bundled physical interface based on the first identifier of each second logical interface.
  • the second network device determines whether each second logical interface located on the second bundled physical interface includes a second logical interface connected to the logical link, and if it does, it determines that the logical link is not carried on the bundled physical link .
  • the second link information on the bundled physical link further includes the first identifier of the first bundled physical interface
  • the second link information on the logical link further includes the first identifier of the first logical interface
  • the second network device after determining that each of the second logical interfaces on the second bundled physical interface includes the second logical interface connected to the logical link, the second network device returns the second network device according to the bundled physical link
  • the second link information and the second link information of the logical link determine whether the first link interface connected to the logical link is located on the first bundled physical interface connected to the bundled physical link. If the logical interface is located on the first bundled physical interface, it is determined that the logical link is carried on the bundled physical link.
  • the second network device obtains the second identifier of the first bundled physical interface from the corresponding relationship between the first identifier and the second identifier according to the first identifier of the first bundled physical interface, and obtains the second identifier of the first bundled physical interface according to the logical link
  • the first identifier of the first logical interface obtains the second identifier of the bundled physical interface corresponding to the first logical interface from the correspondence between the first identifier and the second identifier.
  • the second network device selects a second physical link detection module from among the second physical link detection modules that are not selected, Then perform the operations of steps 406 and 407 again.
  • Step 408 The second network device sets the link state of the logical link to the link state of the bundled physical link.
  • the second network device may input the link status of the logical link to the second routing module.
  • the second network device may also record the identifier of the second routing module in the second physical link detection module, so that the second physical link detection module and the second routing module are bound.
  • the second network device detects the link status of the bundled physical link through the second physical link detection module, and then the logical link
  • the link state of the road is set to the link state of the bundled physical link, and the link state of the bundled physical link is input to the second routing module according to the recorded identifier of the second routing module.
  • the second routing module calculates the route corresponding to the logical link according to the link state.
  • Step 409 The second network device sends a response message to the first network device through the logical link, where the response message includes a detection success indication.
  • a diagnostic message is used as a response message, and the query mode flag field included in the diagnostic message carries an indication of successful detection.
  • the detection success indication and the detection indication can be the same value or different values.
  • Step 410 The first network device receives the response message, and is triggered by the binding success indication included in the response message, and sets the link state of the logical link to the link state of the bundled physical link.
  • the first network device may input the link state to the second routing module.
  • the first network device may also record the identification of the first routing module in the first physical link detection module, so as to implement binding of the first physical link detection module and the first routing module.
  • the first network device will detect the link status of the bundled physical link through the first physical link detection module.
  • the link state of the logical link is set to the link state of the bundled physical link, and the link state of the bundled physical link is sent to the first routing module according to the recorded identifier of the first routing module.
  • the first routing module calculates the route corresponding to the logical link according to the link state.
  • the bundled physical link includes at least one member link, and the at least one member link carries a logical link; the second physical link detection module is used to detect the link status of each member link, based on each member link The link state of the link obtains the link state of the bundled physical link.
  • the link status of each member link is abnormal, the link status of the bundled physical link is obtained as abnormal; otherwise, the link status of the bundled physical link is obtained as normal status.
  • the first physical link detection module when detecting the link status of the member link, sends the first packet to the second physical link detection module through the member link, and the second physical link After receiving the first message, the link detection module sends the second message to the first physical link detection module through the member link.
  • the link detection module sends the second message to the first physical link detection module through the member link.
  • the first bundled physical interface in the first network device includes at least one member interface. If the logical link detection module is used to detect the bundled physical link and the logical link detection module is used to provide the link status for the first routing module, then The logical link detection module deploys a state machine on the single board where a member interface of the first bundled physical interface is located, and the state machine can detect the member link corresponding to the member interface. When the state machine is abnormal, the logical link detection module detects that the state of the bundled physical link is an abnormal state, and the state of the bundled physical link provided to the first routing module is an abnormal state. The abnormality of the state machine may be caused by the abnormality of the board on which the state machine is located, and it only means that the member link may be abnormal.
  • the board on which other member interfaces are located may still be normal, that is, other member links in the bundled physical link may be normal, and the first network device can also use the bundled physical link and the second network device For communication, the status of the bundled physical link is still normal. Therefore, when the logical link detection module is used to provide the link status for the first routing module, it may provide an incorrect link status.
  • the first physical link detection module detects each member link included in the bundled physical link, that is, the first physical link detection module performs detection on the board where each member interface included in the first bundled physical interface is located.
  • the state machine is deployed, and each member interface and each member link can be detected through the state machine on each board.
  • the physical link of the bundle is determined to be abnormal, so you can report to the first
  • the routing module provides accurate link status of bundled physical links.
  • the first network device determines the logical link corresponding to the first routing module, and obtains the connection with the first network device The first link information of the bundled physical link. According to the first link information of the bundled physical link, it is determined whether the logical link is carried on the bundled physical link. When the logical link is carried on the bundled physical link, the link state of the bundled physical link is detected, the link state of the logical link is set to the link state of the bundled physical link, and the link state is provided to the logical link The first routing module corresponding to the link.
  • the link state of each logical link may be set to the link state of the bundled physical link, And provide each first routing module with the detected link status, so that there is no need to establish a logical link detection module for each first routing module, which reduces the occupation of computing resources of network equipment and reduces the occupation of network resources .
  • an embodiment of the present application provides a method for detecting link status.
  • the method can be applied to any network architecture shown in Figs. 1 to 3, including:
  • Step 601 The first network device detects the link status of the bundled physical link and obtains first link information of the bundled physical link, where the first link information includes at least the first bundled physical interface connected to the bundled physical link The first identifier of the first bundled physical interface is an interface in the first network device.
  • the first link information may further include a first identifier of a second bundled physical interface connected to the bundled physical link, and the second bundled physical interface is an interface in the second network device.
  • the first network device when the first network device establishes the first physical link detection module, it determines the bundled physical link corresponding to the first physical link detection module, and detects the physical link through the first physical link detection module. The link status of the bundled physical link is obtained, and the first link information corresponding to the bundled physical link is obtained from the first physical link detection module.
  • the technician can input configuration information to the first network device through the management device, and the configuration information is included in the first network device.
  • the first network device uses the first identifier of the first bundled physical interface as the source identifier and the first identifier of the second bundled physical interface as the destination identifier to generate a first physical link detection module for detecting the bundled physical link .
  • the technician can also input configuration information to the second network device through the management device.
  • the configuration information includes the first identifier of the first bundled physical interface connected to the bundled physical link on the first network device and the second network device.
  • the first identifier of the second bundled physical interface connected to the bundled physical link on the device.
  • the second network device uses the first identifier of the second bundled physical interface as the source identifier and the first identifier of the first bundled physical interface as the destination identifier to generate a second physical link detection module for detecting the bundled physical link .
  • the first bundled physical interface in the first network device may not have its own first identifier, so that the configuration information configured by the technician on the first network device does not include the first identifier.
  • the first identifier of a bundle of physical interfaces includes the number information of the first bundle of physical interfaces, so that when the first network device generates the first physical link detection module, it can obtain information from each first logical link on the first bundle of physical interfaces. Select a first identifier from the first identifiers of the interface, set the first identifier of the first bundled physical interface as the selected first identifier, then use the first identifier of the first bundled physical interface as the source identifier and use the second bundled physical interface as the source identifier.
  • the first identifier of the interface is used as the target identifier to generate a first physical link detection module for detecting the bundled physical link.
  • each first logical interface on the first bundled physical interface has its own numbering information, and the first network device may determine each first logical interface according to the numbering information of each first logical interface.
  • a logical interface is sorted, and the first identification of the first logical interface with the largest number information is selected, or the first identification of the first logical interface with the smallest number information is selected.
  • the first network device randomly selects a first identifier of the first logical interface from each first logical interface.
  • the second bundled physical interface in the second network device may not have its own first identifier, and the configuration information configured by the technician on the second network device may not include the second network device.
  • the first identifier of a bundle of physical interfaces includes the number information of the first bundle of physical interfaces.
  • the first identifier of is used as the target identifier to generate a second physical link detection module for detecting the bundled physical link.
  • the configuration information may also include a binding command information.
  • the first network device when the configuration information includes binding command information, after generating the first physical link detection module, the first network device obtains the corresponding information of the first physical link detection module under the trigger of the binding command information. Bundle the link information of the physical link.
  • the first physical link detection module may include link information of the bundled physical link corresponding to the first physical link detection module, so the first network device may obtain the first physical link detection from the first physical link detection module Link information of the bundled physical link corresponding to the module. Or, obtain the link information of the bundled physical link corresponding to the first physical link detection module from the configuration information.
  • the technician can input the binding command information to the first network device through the management device.
  • the binding command information includes the identification of the first physical link detection module.
  • the first network device determines the first physical link detection module according to the identification of the first physical link detection module in the binding command information, and then obtains the corresponding first physical link detection module according to the method in this embodiment of the application. Binding the link information of the physical link, and continue to perform the subsequent steps in the embodiment of the present application.
  • Step 602 The first network device determines M logical links according to the first link information of the bundled physical link, where M is an integer greater than or equal to 1.
  • the first link information of the bundled physical link includes the first identifier of the first bundled physical interface.
  • the first link information of the bundled physical link may also include the first identifier of the second bundled physical interface, and the second bundled physical interface is the first identifier of the second bundled physical interface. 2. The interface connected to the bundled physical link on the network device.
  • the first network device determines the M first logical interfaces that are located on the first bundled physical interface and has addresses according to the first identifier of the first bundled physical interface, and determines the logic connected to the M first logical interfaces.
  • Link that is, M logical links are obtained.
  • the first network device may obtain the information of each first logical interface located on the first bundled physical interface from the correspondence between the first ID of the bundled physical interface and the first ID of the logical interface according to the first ID of the first bundled physical interface.
  • the first identifier is to determine each first link interface located on the first bundle physical interface according to the first identifier of each first logical interface located on the first bundle physical interface, from each first link interface located on the first bundle physical interface M first logical interfaces with addresses are selected from the logical interfaces, and logical links connected to the M first logical interfaces are determined, that is, M logical links are obtained.
  • Step 603 The first network device selects N logical links from the M logical links, and the N logical links are carried on the bundled physical link, and N is an integer less than or equal to M and greater than or equal to 1 .
  • each first logical interface located on the first bundled physical interface is connected to a logical link, and the logical link is the connection between the first network device and the second network device.
  • M and N are equal, and N logical links are directly selected.
  • the logical link connected to the first logical interface includes At least one.
  • One logical link in the at least one logical link is a link between the first network device and the second network device.
  • the operation of selecting N logical links from the M logical links may include the following operations from 6031 to 6032, and the operations from 6031 to 6032 are:
  • any first routing module includes any first routing module The first link information of the corresponding logical link.
  • the first link information of each logical link includes the first identifier of the second logical interface, and the second logical interface may be the first 2. Interfaces on network equipment.
  • the first link information of the bundled physical link includes the first identifier of the second bundled physical interface.
  • the second identifier of the second bundled physical interface is obtained from the correspondence between the first identifier and the second identifier.
  • the first identifier of the second logical interface included in the first link information of any logical link obtains the second logical from the correspondence between the first identifier and the second identifier
  • the second identifier of the bundled physical interface corresponding to the interface when the second identifier of the second bundled physical interface is the same as the second identifier of the bundled physical interface corresponding to the second logical interface, it is determined that the second logical interface is located on the second bundled interface .
  • the second bundled physical interface is the interface connected to the bundled physical link on the second network device, and the N second logical interfaces are located on the second bundled physical interface, so the logical connection to the N second logical interfaces is determined
  • the link is on the bundled physical link.
  • the first network device determines the first routing modules corresponding to the N logical links carried on the bundled physical link, that is, N first routing modules are obtained.
  • the first network device After obtaining N first routing modules, the first network device obtains the link status of the bundled physical link detected by the first physical link detection module, and if the link status is normal The following step 604 is performed, and if the link status is abnormal, the operation ends.
  • Step 604 The first network device sends a diagnosis message to the second network device through the bundled physical link, where the diagnosis message includes a detection instruction.
  • the detection indication is used to instruct the second network device to set the link state of the N logical links carried on the bundled physical link to the link state of the bundled physical link.
  • the query mode flag field in the diagnostic message includes the detection indication.
  • the second network device includes a second physical link detection module for detecting the bundled physical link and a second routing module corresponding to each of the N logical links.
  • Step 605 The second network device receives the diagnostic message from the bundled physical link, detects the link status of the bundled physical link under the trigger of the detection indication included in the diagnostic message, and obtains the first physical link of the bundled physical link. Two link information.
  • the second network device receives the diagnostic message from the bundled physical link, determines the second physical link detection module corresponding to the bundled physical link under the trigger of the detection indication included in the diagnostic message, and passes The second physical link detection module detects the link status of the bundled physical link, and obtains the second link information of the bundled physical link from the second physical link detection module.
  • the second link information may include The first identifier of the second bundle of physical interfaces that the bundled physical link passes may also include the first identifier of the first bundle of physical interfaces that the bundled physical link passes.
  • Step 606 The second network device determines Q logical links according to the second link information of the bundled physical link, where Q is an integer greater than or equal to 1.
  • the second link information of the bundled physical link includes the first identifier of the second bundled physical interface.
  • the second link information of the bundled physical link may also include the first identifier of the first bundled physical interface, and the first bundled physical interface is the first An interface on a network device connected to the bundled physical link.
  • the second network device determines Q second logical interfaces with addresses located on the second physical interface of the second bundle according to the first identifier of the second physical interface of the bundle, and determines the logic connected to the Q second logical interfaces Links, that is, Q logical links are obtained.
  • the second network device may obtain each second link interface located on the second bundled physical interface from the corresponding relationship between the first ID of the bundled physical interface and the first ID of the logical interface according to the first ID of the second bundled physical interface According to the first identifier of each second link interface located on the second bundle physical interface, each second link interface located on the second bundle physical interface is determined from each second link interface located on the second bundle physical interface.
  • Q second logical interfaces with addresses are selected from the second logical interfaces, and logical links connected to the Q second logical interfaces are determined, that is, Q logical links are obtained.
  • Step 607 The second network device selects N logical links from the Q logical links, and the N logical links are carried on the bundled physical link, and N is an integer less than or equal to Q and greater than or equal to 1 .
  • each second logical interface located on the second bundled physical interface is connected to a logical link, and the logical link is the connection between the first network device and the first network device.
  • Q and N are equal at this time, and N logical links are directly selected.
  • the logical link connected to the second logical interface includes At least one.
  • One logical link in the at least one logical link is a link between the second network device and the first network device.
  • the operation of selecting N logical links from the Q logical links may include the following operations 6071 to 6072, and the operations 6071 to 6072 are:
  • any second routing module includes any second routing module The second link information of the corresponding logical link.
  • the second link information of each logical link includes the first identifier of the first logical interface, and the first logical interface may be the first An interface on a network device.
  • the second link information of the bundled physical link includes the first identifier of the first bundled physical interface.
  • the second identifier of the first bound physical interface is obtained from the correspondence between the first identifier and the second identifier.
  • the first logical interface is obtained from the corresponding relationship between the first identifier and the second identifier.
  • the second identifier of the bundled physical interface corresponding to the interface when the second identifier of the first bundled physical interface is the same as the second identifier of the bundled physical interface corresponding to the first logical interface, it is determined that the first logical interface is located on the first bundled physical interface on.
  • the first bundled physical interface is the interface connected to the bundled physical link on the first network device, and the N first logical interfaces are located on the first bundled physical interface, so the logical connection to the N first logical interfaces is determined
  • the link is on the bundled physical link.
  • the logical link has a corresponding first routing module in the first network device and a corresponding second network device in the second network device. Routing module, therefore, there is a first routing module corresponding to the N logical link carried on the bundled physical link on the first network device, and a first routing module corresponding to the N logical link also exists on the second network device .
  • Step 608 The second network device skips detecting the link state of the N logical links, and sets the link state of the N logical links to the link state of the bundled physical link.
  • the second network device may also input the link status of each logical link to the second routing module corresponding to each logical link of the N logical links.
  • the second network device may also bind the N second routing modules and the second physical link detection module.
  • the second network device may record in the second physical link detection module
  • the identifiers of the N second routing modules implement binding of the second physical link detection module and the N second routing modules.
  • the second network device detects the link status of the bundled physical link through the second physical link detection module, and then determines the status of the N logical links.
  • the link state is set as the link state of the bundled physical link, and the link state of the bundled physical link is sent to the N second routing modules according to the recorded identifiers of the N second routing modules.
  • the second routing module may calculate the route corresponding to the logical link according to the link state, for example, may perform calculation operations such as route convergence or route reselection.
  • the second network device may also include logical link detection modules corresponding to the N second routing modules, and the second network device may delete the logical link detection modules corresponding to the N second routing modules to release The computing resources and network resources occupied by the logical link detection modules corresponding to the N second routing modules.
  • Step 609 The second network device sends a response message to the first network device through the bundled physical link, where the response message includes a detection success indication.
  • a diagnostic message is used as a response message, and the query mode flag field included in the diagnostic message carries an indication of successful detection.
  • Step 610 The first network device receives the response message, and is triggered by the detection success indication included in the response message, skips the detection of the link status of the N logical links, and the links of the N logical links The status is set to the link status of the bundled physical link.
  • the second network device may also input the link status of each logical link to the first routing module corresponding to each logical link of the N logical links.
  • the first network device binds the N second routing modules and the second physical link detection module under the trigger of the detection success indication included in the response message.
  • the first network device may record the identities of the N first routing modules in the first physical link detection module to implement binding of the first physical link detection module and the N first routing modules.
  • the first network device detects the link status of the bundled physical link through the first physical link detection module,
  • the link state is set as the link state of the bundled physical link, and the link state of the bundled physical link is sent to the N first routing modules according to the recorded identifiers of the N first routing modules.
  • the first routing module may calculate the route corresponding to the logical link according to the link state, for example, may perform calculation operations such as route convergence or route reselection.
  • the first network device may also include logical link detection modules corresponding to the N first routing modules, and the first network device may delete the logical link detection modules corresponding to the N first routing modules to release The computing resources and network resources occupied by the logical link detection modules corresponding to the N first routing modules.
  • the configuration information input by the technician for the second network device through the management device may also include a binding command message, so that after both the first network device and the second network device obtain the configuration information, the first network device generates the second network device.
  • a physical link detection module, and N first routing modules are determined according to the above-mentioned operations 601 to 603, and a diagnosis message is sent to the second network device.
  • the second device also generates a second physical link detection module, determines N second routing modules according to the operations in steps 605 to 607 above, and sends an acknowledgement message to the first network device.
  • the second network device binds the second physical link detection module and the N second routing modules when receiving the diagnostic message sent by the first network device.
  • the first network device buffers the first physical link detection module and the N first routing modules when receiving the diagnostic message sent by the second network device.
  • the technician may also trigger the first network device to delete the first identifier of the first bundled physical interface or trigger the second network device to delete the first identifier of the second bundled physical interface.
  • the first network device judges whether the first physical link detection module corresponding to the bundled physical link connected to the first bundled physical interface is bound to the first routing module, and if bound , Send prompt information to the management device corresponding to the technician, and the instruction information is used to indicate that the first physical link detection module corresponding to the bundled physical link connected to the first bundled physical interface is bound to the first routing module. If there is no binding, delete the first identifier of the first bound physical interface.
  • the second network device determines whether the second physical link detection module corresponding to the bundled physical link connected to the second bundled physical interface is bound to the second routing module, if Binding, sending prompt information to the management device corresponding to the technician.
  • the indication information is used to indicate that the second physical link detection module corresponding to the bundled physical link connected to the second bundled physical interface is bound to the second routing module. If it is not bound, delete the first identifier of the second bound physical interface.
  • the first network device after the first network device establishes the first physical link detection module corresponding to the bundled physical link, the first network device obtains the first link information of the bundled physical link, and according to the first The link information obtains the first link information of the M logical links connected to the M first logical interfaces on the first bundled physical interface. According to the first link information of the M logical links and the first link information of the bundled physical link, the N logical links carried on the bundled physical link are determined, so that the N logical links The link state of is set to the link state of the bundled physical link.
  • an embodiment of the present application provides an apparatus 700 for detecting a link state.
  • the apparatus 700 may be deployed on the first network device in any of the foregoing embodiments. For example, it may be deployed on the first network device of the embodiment shown in FIG. 4 or 6, including:
  • the detecting unit 701 is configured to detect the link status of a bundled physical link, where the bundled physical link is a link between the apparatus 700 and the second network device;
  • the processing unit 702 is configured to determine N logical links according to the link information of the bundled physical link, the N logical links are carried on the bundled physical link, and N is an integer greater than or equal to 1;
  • the processing unit 702 is further configured to skip detecting the link state of the N logical links, and set the link state of the N logical links to the link state of the bundled physical link.
  • step 402 in the embodiment shown in FIG. 4 or step 601 in the embodiment shown in FIG. content refers to step 402 in the embodiment shown in FIG. 4 or step 601 in the embodiment shown in FIG. content.
  • the processing unit 702 determines the detailed implementation process of the N logical links. For details, refer to step 403 in the embodiment shown in FIG. 4 or step 603 in the embodiment shown in FIG. 6 for determining the logical link by the first network device. Related content.
  • processing unit 702 is configured to:
  • the link information of the bundled physical link determine M first logical interfaces located on the first bundled physical interface, where M is an integer greater than or equal to N, and the first bundled physical interface is connected to the device 700 Bundle the interfaces connected by physical links;
  • the processing unit 602 is configured to determine, according to the link information of the bundled physical link, M first logical interfaces that are located on the first bundled physical interface and have addresses.
  • processing unit 602 is configured to:
  • the link information of the M logical links and the link information of the bundled physical link determine N second logical interfaces located on the second bundled physical interface, and the second bundled physical interface is on the second network device The interface connected to the bundled physical link;
  • the processing unit 702 determines the detailed implementation process of the N second logical interfaces. For details, refer to steps 6031 to 6032 in the embodiment shown in FIG. 6 for determining the relevant content of the second logical interface by the first network device.
  • the processing unit 602 is further configured to calculate the route corresponding to each logical link according to the link state of each logical link in the N logical links.
  • the apparatus 700 further includes:
  • the sending unit 703 is configured to send a diagnostic message to the second network device, the diagnostic message including a detection indication, and the detection indication is used to instruct the second network device to detect the link status of the bundled physical link and connect the N logical links
  • the link state of the link sets the link state of the bundled physical link.
  • the query mode flag field of the diagnostic message includes the detection indication.
  • the detection unit detects the link status of the bundled physical link.
  • the processing unit determines N logical links carried on the bundled physical link according to the link information of the bundled physical link, where N is an integer greater than or equal to 1. Then the processing unit skips detecting the link state of the N logical links, and sets the link state of the N logical links to the link state of the bundled physical link. In this way, only the detection unit needs to detect the link status of a bundled physical link, and the link status of N logical links can be obtained, and there is no need to detect the link status of each logical link of the N logical links. Thereby, the computing resources of the network equipment are reduced, and the network resources of the communication network are also reduced.
  • the apparatus 800 may be the first network device in any of the foregoing embodiments.
  • it may be the first network device in the embodiment shown in FIG. 4 or 6, and the apparatus 800 includes at least one processor 801, a bus system 802, a memory 803, and at least one transceiver 804.
  • the device 800 is a device with a hardware structure, and can be used to implement the functional modules in the device 700 described in FIG. 7.
  • the detection unit 701 and the processing unit 702 in the device 700 shown in FIG. 7 can be implemented by calling the code in the memory 803 by the at least one processor 801.
  • the sending unit 703 can be implemented by the transceiver 804.
  • the device 800 can also be used to implement the function of the collection and analysis device in any of the foregoing embodiments.
  • processor 801 may be a general-purpose central processing unit (central processing unit, CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more controllers for controlling the computer. Apply for integrated circuits for program execution.
  • CPU central processing unit
  • ASIC application-specific integrated circuit
  • the above-mentioned bus system 802 may include a path for transferring information between the above-mentioned components.
  • the above-mentioned transceiver 804 is used to communicate with other devices or a communication network.
  • the above-mentioned memory 803 may be a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, random access memory (RAM), or other types that can store information and instructions.
  • the type of dynamic storage device can also be electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM), or other optical disk storage, CD-ROM Storage (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or can be used to carry or store desired program codes in the form of instructions or data structures and can be used by Any other medium accessed by the computer, but not limited to this.
  • the memory can exist independently and is connected to the processor through a bus.
  • the memory can also be integrated with the processor.
  • the memory 803 is used to store application program codes for executing the solutions of the present application, and the processor 801 controls the execution.
  • the processor 801 is configured to execute application program codes stored in the memory 803, so that the device 800 realizes the functions in the method of the present patent.
  • the processor 801 may include one or more CPUs, such as CPU0 and CPU1 in FIG. 8.
  • the apparatus 800 may include multiple processors, such as the processor 801 and the processor 807 in FIG. 8. Each of these processors can be a single-CPU (single-CPU) processor or a multi-core (multi-CPU) processor.
  • the processor here may refer to one or more devices, circuits, and/or processing cores for processing data (for example, computer program instructions).
  • the program can be stored in a computer-readable storage medium.
  • the storage medium mentioned can be a read-only memory, a magnetic disk or an optical disk, etc.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Environmental & Geological Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Cardiology (AREA)
  • General Health & Medical Sciences (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

本申请实施例公开了一种检测链路状态的方法及装置，属于通信领域。所述方法包括：第一网络设备检测捆绑物理链路的链路状态，所述捆绑物理链路为所述第一网络设备与第二网络设备之间的链路；所述第一网络设备根据所述捆绑物理链路的链路信息确定N个逻辑链路，所述N个逻辑链路承载在所述捆绑物理链路上，N为大于或等于1的整数；所述第一网络设备跳过检测所述N个逻辑链路的链路状态，将所述N个逻辑链路的链路状态设置为所述捆绑物理链路的链路状态。采用本申请可以减小占用网络设备的计算资源以及减小占用通信网络的网络资源。

Description

检测链路状态的方法及装置
本申请要求于2019年10月31日提交中国专利局、申请号为201911055864.2、发明名称为“检测链路状态的方法及装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信领域，特别涉及一种检测链路状态的方法及装置。
背景技术
在通信网络中，两个网络设备之间通过物理链路相连，该物理链路上可以承载一条或多条逻辑链路。对于该两个网络设备中的任一个网络设备，该网络设备上包括每条逻辑链路对应的路由模块。逻辑链路对应的路由模块用于维护该逻辑链路对应的路由信息。
该逻辑链路对应的路由模块可能需要请求网络设备为其建立一个逻辑链路检测模块，该逻辑链路检测模块用于检测该逻辑链路的链路状态，并向该路由模块发送检测的该逻辑链路的链路状态。该路由模块接收该链路状态，在该链路状态为异常状态时，进行路由收敛或路由重选处理。
在实现本申请的过程中，发明人发现相关技术至少存在以下问题：
一条物理链路上往往承载多条逻辑链路，这样网络设备会为每个逻辑链路对应的路由模块建立逻辑链路检测模块，也就是说网络设备上会运行多个逻辑链路检测模块，占用网络设备的大量计算资源。每个逻辑链路检测模块在检测逻辑链路的状态时，会在该两个网络设备之间建立会话，这样也占用了大量的网络资源。
发明内容
本申请提供了一种检测链路状态的方法及装置，能够减小占用网络设备的计算资源以及减小占用通信网络的网络资源，所述技术方案如下：
第一方面，本申请提供了一种检测链路状态的方法，在所述方法中，第一网络设备检测捆绑物理链路的链路状态，该捆绑物理链路为第一网络设备与第二网络设备之间的链路。第一网络设备根据该捆绑物理链路的链路信息，确定承载在该捆绑物理链路上的N个逻辑链路，N为大于或等于1的整数。第一网络设备跳过检测该N个逻辑链路的链路状态，将该N个逻辑链路的链路状态设置为该捆绑物理链路的链路状态。这样只需要检测一个捆绑物理链路的链路状态，就可以得到N个逻辑链路的链路状态，不需要检测该N个逻辑链路中的每个逻辑链路的链路状态，从而减小了占用网络设备的计算资源，也减小了占用通信网络的网络资源。
在一种可能的实现方式中，根据该捆绑物理链路的链路信息，确定位于第一捆绑物理接口上的M个第一逻辑接口，M为大于或等于N的整数，第一捆绑物理接口是第一网络设备上的与该捆绑物理链路连接的接口。从与该M个第一逻辑接相连的M个逻辑链路中选择N个逻辑链路。实现确定出承载在该捆绑物理链路上的N个逻辑链路。
在另一种可能的实现方式中，根据该捆绑物理链路的链路信息，确定位于第一捆绑物理接口上且具有地址的M个第一逻辑接口。
在另一种可能的实现方式中，获取M个逻辑链路的链路信息；根据该M个逻辑链路的链路信息和该捆绑物理链路的链路信息，确定位于第二捆绑物理接口上的N个第二逻辑接口，第二捆绑物理接口是第二网络设备上的与捆绑物理链路相连的接口；选择与该N个第二逻辑接口连接的逻辑链路。在第一网络设备通过其他网络设备与第二网络设备相连的情况下，与第一逻辑接口相连的逻辑链路有至少一条，其中一条逻辑链路承载在该捆绑物理链路上，因此确定第二捆绑物理接口上的N个第二逻辑接口，又因为第二捆绑物理接口是第二网络设备上与该捆绑物理链路相连的捆绑物理接口，这样与该N个第二逻辑接口的逻辑链路为承载在该捆绑物理链路上的逻辑链路，从而提高确定位于该捆绑物理链路上的逻辑链路的准确性。
在另一种可能的实现方式中，根据所述N个逻辑链路中的每个逻辑链路的链路状态，分别对所述每个逻辑链路对应的路由进行计算。由于每个逻辑链路的链路状态为捆绑物理链路的链路状态，这样基于该捆绑物理链路的链路状态便可计算每个逻辑链路的路由，从而不需要检测每个逻辑链路的链路状态。
在另一种可能的实现方式中，向第二网络设备发送诊断报文，该诊断报文包括检测指示，该检测指示用于指示第二网络设备检测该捆绑物理链路的链路状态以及将该N个逻辑链路的链路状态设置该捆绑物理链路的链路状态。这样第二网络设备只需要检测一个捆绑物理链路的链路状态，就可以得到N个逻辑链路的链路状态，不需要检测该N个逻辑链路中的每个逻辑链路的链路状态，从而减小了占用网络设备的计算资源，也减小了占用通信网络的网络资源。
在另一种可能的实现方式中，诊断报文的查询模式标志字段包括该检测指示。
第二方面，本申请提供了一种检测链路状态的装置，用于执行第一方面或第一方面的任意一种可能实现方式中的方法。具体地，所述装置包括用于执行第一方面或第一方面的任意一种可能实现方式的方法的单元。
第三方面，本申请提供了一种检测链路状态的装置，所述装置包括：处理器、存储器和收发器。其中，所述处理器、所述存储器和所述收发器之间可以通过总线系统相连。所述存储器用于存储一个或多个程序，所述处理器用于执行所述存储器中的一个或多个 程序，使得所述装置完成第一方面或第一方面的任意可能实现方式中的方法。
第四方面，本申请提供了一种计算机可读存储介质，计算机可读存储介质中存储有程序代码，当其在计算机上运行时，使得计算机执行上述第一方面或第一方面的任意可能实现方式中的方法。
第五方面，本申请提供了一种包含程序代码的计算机程序产品，当其在计算机上运行时，使得计算机执行上述第一方面或第一方面的任意可能实现方式中的方法。
附图说明
图1是本申请实施例提供的一种网络架构示意图；
图2是本申请实施例提供的一种捆绑物理链路与成员链路之间的关系示意图；
图3是本申请实施例提供的另一种网络架构示意图；
图4是本申请实施例提供的一种检测链路状态的方法流程图；
图5是本申请实施例提供的一种诊断报文的结构示意图；
图6是本申请实施例提供的另一种检测链路状态的方法流程图；
图7是本申请实施例提供的一种检测链路状态的装置结构示意图；
图8是本申请实施例提供的另一种检测链路状态的装置结构示意图。
具体实施方式
参见图1，本申请提供了一种网络架构，包括：
第一网络设备1和第二网络设备2，第一网络设备1上包括至少一个第一捆绑物理接口3，第二网络设备2上包括至少一个第二捆绑物理接口4。第一网络设备1和第二网络设备2之间可以通过捆绑物理链路5相连。该捆绑物理链路5连接第一网络设备1上的一个第一捆绑物理接口3以及第二网络设备2上的一个第二捆绑物理接口4。
第一捆绑物理接口3中包括至少一个成员接口，第二捆绑物理接口4中也包括至少一个成员接口，捆绑物理链路5包括至少一条成员链路。对于任一条成员链路，该成员链路连接第一捆绑物理接口3中的一个成员接口和第二捆绑物理接口4中的一个成员接口。
例如，参见图2，第一捆绑物理接口3包括第一成员接口31和第二成员接口32，第二捆绑物理接口4包括第三成员接口41和第四成员接口42。捆绑物理链路5包括第一成员链路51和第二成员链路52。第一成员链路51连接第一成员接口31和第三成员接口41。第二成员链路52连接第二成员接口32和第四成员接口42。
可选的，参见图1，第一网络设备1和第二网络设备2可以直接相连，第一网络设备1和第二网络设备2之间的通信不需要通过其他网络设备来转发。或者，参见图3，第一网络设备1通过至少一个其他网络设备连接到第二网络设备2，第一网络设备1和第二网络设备2之间的通信通过至少一个其他网络设备来转发。例如，参见图3，第一 网络设备1的一个第一捆绑物理接口3通过第三网络设备6与第二网络设备2，第一网络设备1还可以通过第三网络设备6与除第二网络设备2之外的网络设备相连，例如，如图3所示，还与第四网络设备7相连。
可选的，第一网络设备1可以为路由器或交换机等设备，第二网络设备2可以为路由器或交换机等设备。第三网络设备6可以为路由器或交换机等设备，第四网络设备7可以为路由器或交换机等设备，第一捆绑物理接口3和第二捆绑物理接口4可以以太网接口等，例如可以为以太网链路聚合(ethernet-trunk，Eth-trunk)口等。
可选的，第一网络设备1在第一捆绑物理接口3上生成至少一个第一逻辑接口，第二网络设备2在第二捆绑物理接口4上生成至少一个第二逻辑接口。第一网络设备1和第二网络设备2之间可以建立有至少一条逻辑链路，每条逻辑链路经过第一捆绑物理接口3上的一个第一逻辑接口和第二捆绑物理接口4上的一个第二逻辑接口，该至少一条逻辑链路承载在该捆绑物理链路5上。
例如，假设第一网络设备1在第一捆绑物理接口3上生成两个第一逻辑接口，分别为第一逻辑接口A和第一逻辑接口B，第二网络设备2在第二捆绑物理接口4上生成两个第二逻辑接口，分别为第二逻辑接口C和第二逻辑接口D。这样第一捆绑物理接口3上的第一逻辑接口A和第二捆绑物理接口4上的第二逻辑接口C之间建立有第一逻辑链路，以及第一捆绑物理接口3上的第一逻辑接口B和第二捆绑物理接口4上的第二逻辑接口D之间建立有第二逻辑链路，第一逻辑链路和第二逻辑链路承载在捆绑物理链路5上。
在第一网络设备1中，第一捆绑物理接口3可以有自己的第一标识，以及第一捆绑物理接口3上的每个第一逻辑接口可以有各自的第一标识。在第一网络设备1中保存有捆绑物理接口的第一标识与逻辑接口的第一标识的对应关系。也就是说，第一网络设备1将第一捆绑物理接口3的第一标识与第一捆绑物理接口3上的每个第一逻辑接口的第一标识对应保存在物理接口的第一标识与逻辑接口的第一标识的对应关系中。例如，第一网络设备1可以将第一捆绑物理接口3的第一标识IP1、第一捆绑物理接口3上的第一逻辑接口A的第一标识IPA和第一逻辑接口B的第一标识IPB对应保存在如下表1所示的捆绑物理接口的第一标识与逻辑接口的第一标识的对应关系中。
表1
捆绑物理接口的第一标识 逻辑接口的第一标识
IP1 IPA、IPB
…… ……
同理，在第二网络设备2中，第二捆绑物理接口4可以有自己的第一标识，以及第二捆绑物理接口4上的每个第二逻辑接口可以有各自的第一标识。在第二网络设备2中也保存有捆绑物理接口的第一标识与逻辑接口的第一标识的对应关系。也就是说，第二网络设备2将第二捆绑物理接口4的第一标识与第二捆绑物理接口4上的每个第二逻辑接口的第一标识对应保存在捆绑物理接口的第一标识与逻辑接口的第一标识的对应关系中。例如，第二网络设备2可以将第二捆绑物理接口4的第一标识IP2、第二捆绑物理接口4上的第二逻辑接口C的第一标识IPC和第二逻辑接口D的第一标识IPD对应 保存在如下表2所示的捆绑物理接口的第一标识与逻辑接口的第一标识的对应关系中。
表2
捆绑物理接口的第一标识 逻辑接口的第一标识
IP2 IPC、IPD
…… ……
可选的，上述第一标识为网络之间互连的协议(internet protocol，IP)地址等。
在第一网络设备1中，第一捆绑物理接口3可以有自己的第二标识，第一捆绑物理接口3的第一标识、第一捆绑物理接口3上的各第一逻辑接口的第一标识均与第一捆绑物理接口3的第二标识相对应。在第二网络设备2中，第二捆绑物理接口4可以有自己的第二标识，第二捆绑物理接口4的第一标识、第二捆绑物理接口4上的各第二逻辑接口的第一标识均与第二捆绑物理接口4的第二标识相对应。第一捆绑物理接口3的第二标识与第一捆绑物理接口3上的各逻辑接口的第二标识相同(例如，具有相同的MAC地址)，第二捆绑物理接口4的第二标识与第二捆绑物理接口4上的各第二逻辑接口的第二标识相同。
第一网络设备1中保存有第一标识与第二标识的对应关系。第一网络设备1可以获取到第二网络设备2的第二捆绑物理接口4的第一标识、第二捆绑物理接口4上的每个第二逻辑接口的第一标识，以及第二捆绑物理接口4的第二标识，并将第二网络设备2的第二捆绑物理接口4的第一标识、第二捆绑物理接口4上的每个第二逻辑接口的第一标识，以及第二捆绑物理接口4的第二标识对应保存在第一标识与第二标识的对应关系中。例如，第一网络设备1将第二捆绑物理接口4的第一标识IP2、第二捆绑物理接口4上的第二逻辑接口C的第一标识IPC和第二逻辑接口D的第一标识IPD，以及第二捆绑物理接口4的第二标识MAC2对应保存在如下表3所示的第一标识与第二标识的对应关系中。
表3
Figure PCTCN2020125670-appb-000001
同理，第二网络设备2中也保存有第一标识与第二标识的对应关系。第二网络设备2可以获取到第一网络设备1的第一捆绑物理接口3的第一标识、第一捆绑物理接口3上的每个第一逻辑接口的第一标识，以及第一捆绑物理接口3的第二标识，并将第一网络设备1的第一捆绑物理接口3的第一标识、第一捆绑物理接口3上的每个第一逻辑接口的第一标识，以及第一捆绑物理接口3的第二标识对应保存在第一标识与第二标识的对应关系中。例如，第二网络设备2将第一捆绑物理接口3的第一标识IP1、第一捆绑物理接口3上的第二逻辑接口A的第一标识IPA和第二逻辑接口B的第一标识IPB，以及第一捆绑物理接口3的第二标识MAC1对应保存在如下表4所示的第一标识与第二标识的对应关系中。
表4
Figure PCTCN2020125670-appb-000002
可选的，上述第二标识为介质访问控制层(media access control，MAC)地址等。
第一网络设备1可能包括捆绑物理链路5对应的第一物理链路检测模块，第二网络设备2中也可能包括该捆绑物理链路5对应的第二物理链路检测模块。对于该捆绑物理链路5上的每个逻辑链路，在第一网络设备1上包括每个逻辑链路对应的第一路由模块，在第二网络设备2上也包括每个逻辑链路对应的第二路由模块。
在第一网络设备1中，第一物理链路检测模块用于检测捆绑物理链路5的链路状态，对于任一个逻辑链路对应的第一路由模块，该第一路由模块用于维护该逻辑链路的路由信息，路由信息可以包括路由目标地址、路由下一跳信息、路由出接口的地址或路由优先级等至少一个，该第一路由模块维护的路由信息是第一网络设备1基于该逻辑链路生成的。在第二网络设备2中，第二物理链路检测模块用于检测捆绑物理链路5的链路状态，对于任一个逻辑链路对应的第二路由模块，该第二路由模块用于维护该逻辑链路的路由信息，该第二路由模块维护的路由信息是第二网络设备1基于该辑链路生成的。
第一网络设备1中包括路由表，该路由表中包括第一网络设备1中的各第一路由模块维护的路由信息。该路由表中的每个路由信息对应一条逻辑链路。同理，第二网络设备2中也包括路由表，该路由表中包括第二网络设备2中的各第二路由模块维护的路由信息。该路由表中的每个路由信息也对应一条逻辑链路。
可选的，第一路由模块或第二路由模块采用的路由协议可以为中间系统到中间系统(intermediate system to intermediate system，ISIS)或开放式最短路径优先(open shortest path first，OSPF)等。
可选的，第一路由模块维护路由信息的操作可以包括：第一路由模块通过该路由信息对应的逻辑链路向第一网络设备1的邻居发布该路由信息，第一路由模块更新该路由信息包括的路由优先级，或者，第一路由模块修改该路由信息包括的路由下一跳信息等中的一个或多个。同理，第二路由模块维护路由信息的操作也可以为上述一个或多个操作。
在第一网络设备1中，每个第一路由模块需要其对应的逻辑链路的链路状态，因此需要得到与第一网络设备1连接的每个逻辑链路的链路状态，为了避免检测每个逻辑链路的链路状态，可以确定承载在与第一网络设备1连接的捆绑物理链路5上的各逻辑链路，将各逻辑链路的链路状态设置为该捆绑物理链路5的链路状态，这样不需要对承载在该捆绑物理链路5上的各逻辑链路的链路状态进行检测。详细过程可以参见后续图4或图6所示的实施例，在此先不详细说明。
同理，在第二网络设备2中，每个第二路由模块需要其对应的逻辑链路的链路状态，因此需要得到与第二网络设备2连接的每个逻辑链路的链路状态，为了避免检测每个逻辑链路的链路状态，可以确定承载在与第二网络设备2连接的捆绑物理链路5上的各逻 辑链路，将各逻辑链路的链路状态设置为该捆绑物理链路5的链路状态，这样不需要对承载在该捆绑物理链路5上的各逻辑链路的链路状态进行检测。详细过程可以参见后续图4或图6所示的实施例，在此先不详细说明。
可选的，在第一网络设备1中，第一物理链路检测模块和每个第一路由模块是第一网络设备1中运行的不同进程或线程。在第二网络设备2中，第二物理链路检测模块和每个第二路由模块是第二网络设备2中运行的不同进程或线程。
可选的，第一物理链路检测模块或第二物理链路检测模块可以为链路捆束双向转发检测(link bundle bidirectional forwarding detection，link bundle BFD)。
参见图4，本申请实施例提供了一种检测链路状态的方法，该方法可以应用于如图1至3所示的任一网络架构，包括：
步骤401：第一网络设备在第一路由模块请求建立逻辑链路检测模块的情况下，确定第一路由模块对应的逻辑链路。
对于第一网络设备中的任一第一路由模块，在该第一路由模块需要该第一路由模块对应的逻辑链路的链路状态时，该第一路由模块可以向第一网络设备触发请求命令，以请求第一网络设备为其建立逻辑链路检测模块。该逻辑链路为第一网络设备与第二网络设备之间的逻辑链路。
该第一路由模块触发的请求命令包括该逻辑链路的第一链路信息，第一链路信息包括与该逻辑链路连接的第一逻辑接口的第一标识，第一逻辑接口是第一网络设备中的接口。第一链路信息还可以包括与该逻辑链路连接的第二逻辑接口的第一标识，第二逻辑接口是第二网络设备上的接口。
在本步骤中，第一网络设备可以从该请求命令中获取第一链路信息，根据第一链路信息确定该逻辑链路。
可选的，在第一网络设备和第二网络设备之间不存在其他网络设备的情况下，第一网络设备直接与第二网络设备相连，第一网络设备获取的第一链路信息包括第一逻辑接口的第一标识。第一网络设备获取的第一链路信息可以包括第二逻辑接口的第一标识，也可以不包括第二逻辑接口的第一标识。原因在于：
在此情况下，第一网络设备的第一捆绑物理接口与一个第二网络设备相连。这样在第一网络设备中，第一捆绑物理接口上的每个第一逻辑接口可能连接一条逻辑链路，该逻辑链路为第一网络设备与第二网络设备之间的逻辑链路。通过位于第一网络设备上的第一逻辑接口的第一标识就可以确定该逻辑链路，所以第一网络设备获取的第一链路信息可以包括第一逻辑接口的第一标识即可。
可选的，在第一网络设备和第二网络设备之间存在其他网络设备的情况下，即第一网络设备与第二网络设备之间的通信通过其他网络设备来转发，第一网络设备获取的第一链路信息包括第一逻辑接口的第一标识和第二逻辑接口的第一标识。原因在于：
在此情况下，第一网络设备的第一捆绑物理接口通过其他网络设备与至少一个第二网络设备相连。这样在第一网络设备中，第一捆绑物理接口上的每个第一逻辑接口连接至少一条逻辑链路，该至少一条逻辑链路为第一网络设备与至少一个第二网络设备之间的逻辑链路。此时需要通过位于第一网络设备上的第一逻辑接口的第一标识和第二网络 设备上的第二逻辑接口的第一标识来确定逻辑链路，所以第一网络设备获取的第一链路信息可以包括第一逻辑接口的第一标识和第二逻辑接口的第一标识。
步骤402：第一网络设备检测捆绑物理链路的链路状态，以及获取该捆绑物理链路的第一链路信息，该捆绑物理链路是与第一网络设备相连的一条链路。
该捆绑物理链路的第一链路信息至少包括与该捆绑物理链路连接的第一捆绑物理接口的第一标识，第一捆绑物理接口位于第一网络设备上。可选的，该捆绑物理链路的第一链路信息还包括与该捆绑物理链路连接的第二捆绑物理接口的第一标识，第二捆绑物理接口位于第二网络设备上。
第一网络设备可能包括至少一个第一物理链路检测模块，第一物理链路检测模块中包括其对应的捆绑物理链路的第一链路信息。
在本步骤中，第一网络设备从其包括的各第一物理链路检测模块中选择一个第一物理链路检测模块。确定选择的第一物理链路检测模块对应捆绑物理链路，通过选择的该第一物理链路检测模块检测该捆绑物理链路的链路状态，以及从选择的该第一物理链路检测模块中获取该捆绑物理链路的第一链路信息。
第一网络设备获取的第一链路信息包括与该捆绑物理链路连接的第一捆绑物理接口的第一标识。第一链路信息还可以包括与该捆绑物理链路连接的第二捆绑物理接口的第一标识，第二捆绑物理接口是第二网络设备上的接口。
可选的，在第一网络设备和第二网络设备之间不存在其他网络设备的情况下，第一网络设备直接与第二网络设备相连，第一网络设备获取的第一链路信息包括第一捆绑物理接口的第一标识。第一网络设备获取的第一链路信息可以包括第二捆绑物理接口的第一标识，也可以不包括第二捆绑物理接口的第一标识。原因在于：
在此情况下，第一网络设备的第一捆绑物理接口与一个第二网络设备相连。这样在第一网络设备中，第一捆绑物理接口可能与一条捆绑物理链路连接，该捆绑物理链路为第一网络设备与第二网络设备之间的捆绑物理链路。通过位于第一网络设备上的第一捆绑物理接口的第一标识就可以确定该捆绑物理链路，所以第一网络设备获取的第一链路信息可以包括第一捆绑物理接口的第一标识即可。
可选的，在第一网络设备和第二网络设备之间存在其他网络设备的情况下，即第一网络设备与第二网络设备之间的通信通过其他网络设备来转发，第一网络设备获取的第一链路信息包括第一捆绑物理接口的第一标识和第二捆绑物理接口的第一标识。原因在于：
在此情况下，第一网络设备的第一捆绑物理接口通过其他网络设备与至少一个第二网络设备相连。这样在第一网络设备中，第一捆绑物理接口上的每个第一捆绑物理接口连接至少一条捆绑物理链路，该至少一条捆绑物理链路为第一网络设备与至少一个第二网络设备之间的捆绑物理链路。此时需要通过位于第一网络设备上的第一捆绑物理接口的第一标识和第二网络设备上的第二捆绑物理接口的第一标识来确定捆绑物理链路，所以第一网络设备获取的第一链路信息包括第一捆绑物理接口的第一标识和第二捆绑物理接口的第一标识。
步骤403：第一网络设备根据该捆绑物理链路的第一链路信息，确定该逻辑链路是否承载在该捆绑物理链路上，如果该逻辑链路承载在该捆绑物理链路上，则执行步骤 404。
在本步骤中，第一网络设备根据第一捆绑物理接口的第一标识，从逻辑接口的第一标识与捆绑物理接口的第一标识的对应关系中获取位于第一捆绑物理接口上的各第一逻辑接口的第一标识，进而基于各第一逻辑接口的第一标识确定位于第一捆绑物理接口上的各第一逻辑接口，如果各第一逻辑接口中包括与该逻辑链路连接的第一逻辑接口，则确定该逻辑链路承载在该捆绑物理链路上。如果各第一逻辑接口中不包括与该逻辑链路连接的第一逻辑接口，则确定该逻辑链路没有承载在该捆绑物理链路上。
可选的，在该捆绑物理链路的第一链路信息还包括第二捆绑物理接口的第一标识，以及在该逻辑链路的第一链路信息还包括第二逻辑接口的第一标识的情况下，在实现时，第一网络设备在确定出位于第一捆绑物理接口上的各第一逻辑接口中包括与该逻辑链路连接的第一逻辑接口之后，还根据该捆绑物理链路的第一链路信息和该逻辑链路的第一链路信息确定与该逻辑链路相连的第二链路接口是否位于与该捆绑物理链路相连的第二捆绑物理接口上，如果该第二逻辑接口位于第二捆绑物理接口上，则确定该逻辑链路承载在该捆绑物理链路上。
在实现时，第一网络设备根据第二捆绑物理接口的第一标识，从第一标识与第二标识的对应关系中获取第二捆绑物理接口的第二标识，根据与该逻辑链路连接的第二逻辑接口的第一标识，从第一标识与第二标识的对应关系中获取第二逻辑接口对应的捆绑物理接口的第二标识。判断第二捆绑物理接口的第二标识是否与第二逻辑接口对应的捆绑物理接口的第二标识相同，如果相同，则确定第二逻辑接口位于第二捆绑物理接口，进而确定该逻辑链路承载在该捆绑物理链路上，如果不同，则确定该逻辑链路没有承载在该捆绑物理链路上。
在本步骤中，如果确定该逻辑链路没有承载在该捆绑物理链路上，第二网络设备从其包括未被选择的第一物理链路检测模块中选择一个第一物理链路检测模块，然后重新执行步骤402和403的操作。如果第二网络设备中的所有第一物理链路检测模块均被选择后，也没有确定出承载该逻辑链路的捆绑物理链路，表明第一网络设备中没有用于检测该逻辑链路对应的捆绑物理链路的第一物理链路检测模块，因此第一网络设备可以为第一路由模块建立逻辑链路检测模块，该逻辑链路检测模块用于检测该逻辑链路的链路状态。
在本步骤，如果确定该逻辑链路承载在该捆绑物理链路上，第一网络设备获取该第一物理链路检测模块检测的该捆绑物理链路的链路状态，在该链路状态为正常状态的情况下执行如下步骤404的操作，在该链路状态为异常状态的情况下，第一网络设备可以为第一路由模块建立逻辑链路检测模块。
步骤404：第一网络设备通过该逻辑链路向第二网络设备发送诊断报文，该诊断报文包括检测指示。
该检测指示用于指示第二网络设备将该逻辑链路的链路状态设置为该捆绑物理链路的链路状态。
可选的，参见图5所示的诊断报文的结构，该诊断报文包括如下字段，分别为版本号(version，Vers)，诊断字(diagnostic，Diag)，状态(status，Sta)，修改标志(pull，P)，应答标志(final，F)，控制平面独立标识(control plane independent，C)，鉴权标 识(authentication present，A)，查询模式标志(demand，D)，检测时间倍数(Detect Mult)，多位置点(multipoint，M)，长度(Length)，本端区分符(My Discriminator)，对端区分符(Your Discriminator)，本端想要使用的最小BFD控制报文的发送间隔(Desired Min TX Interval)，本端所支持的最小BFD控制报文的接收间隔(Required Min RX Interval)，本端所支持的最小BFD回声报文的接收间隔(Required Min Echo RX Interval)。
该诊断报文中包括查询模式标志字段(图5中的D表示查询模式标志字段)，该查询模式标志字段包括检测指示。其中该查询模式标志字段可以指示32个数值，该32个数值分别为0、1、2、……、31，其中9至31是保留值，在本步骤中，可以从数值9至31中选择一个数值作为绑定指示。
例如，第一网络设备第一逻辑链路向第二网络设备发送诊断报文，该诊断报文包括检测指示。
步骤405：第二网络设备从该逻辑链路上接收该诊断报文，在诊断报文包括的检测指示的触发下确定该逻辑链路。
在本步骤中，第二网络设备还可以确定该逻辑链路对应的第二路由模块，从该第二路由模块中获取该逻辑链路的第二链路信息，第二链路信息可以包括与该逻辑链路连接的第二逻辑接口的第一标识，还可以包括与该逻辑链路连接的第一逻辑接口的第一标识。
步骤406：第二网络设备检测该捆绑物理链路的链路状态，以及获取捆绑物理链路的第二链路信息，该捆绑物理链路是与第二网络设备相连的链路。
第二链路信息至少包括与该捆绑物理链路连接的第二捆绑物理接口的第一标识。
第二网络设备可能包括至少一个第二物理链路检测模块。在本步骤中，第二网络设备从其包括的各第二物理链路检测模块中选择一个第二物理链路检测模块。确定选择的第二物理链路检测模块对应的捆绑物理链路，通过选择的该第二物理链路检测模块检测该捆绑物理链路的链路状态，以及从选择的该第二物理链路检测模块中获取该第二物理链路检测模块对应的捆绑物理链路的第二链路信息。第二链路信息包括与该捆绑物理链路连接的第二捆绑物理接口的第一标识。第二链路信息还可以包括与该捆绑物理链路连接的第一捆绑物理接口的第一标识。
步骤407：第二网络设备根据该捆绑物理链路的第二链路信息，确定该逻辑链路是否承载在该捆绑物理链路上，如果该逻辑链路承载在该捆绑物理链路上，执行步骤408。
在本步骤中，第二网络设备根据第二捆绑物理接口的第一标识，从逻辑接口的第一标识与捆绑物理接口的第一标识的对应关系中获取位于第二捆绑物理接口上的各第二逻辑接口的第一标识，基于各第二逻辑接口的第一标识确定位于第二捆绑物理接口上的各第二逻辑接口。第二网络设备判断位于第二捆绑物理接口上的各第二逻辑接口是否包括与该逻辑链路相连的第二逻辑接口，如果包括，则确定该逻辑链路没有承载在该捆绑物理链路上。
可选的，在该捆绑物理链路的第二链路信息还包括第一捆绑物理接口的第一标识，以及在该逻辑链路的第二链路信息还包括第一逻辑接口的第一标识的情况下，第二网络设备在判断出位于第二捆绑物理接口上的各第二逻辑接口包括与该逻辑链路相连的第二逻辑接口之后，还第二网络设备根据该捆绑物理链路的第二链路信息和该逻辑链路的 第二链路信息确定与该逻辑链路相连的第一链路接口是否位于与该捆绑物理链路相连的第一捆绑物理接口上，如果该第一逻辑接口位于第一捆绑物理接口上，则确定该逻辑链路承载在该捆绑物理链路上。
在实现时，第二网络设备根据第一捆绑物理接口的第一标识，从第一标识与第二标识的对应关系中获取第一捆绑物理接口的第二标识，根据与该逻辑链路相连的第一逻辑接口的第一标识，从第一标识与第二标识的对应关系中获取第一逻辑接口对应的捆绑物理接口的第二标识。判断第一捆绑物理接口的第二标识是否与第一逻辑接口对应的捆绑物理接口的第二标识相同，如果相同，则确定第一逻辑接口位于第一捆绑物理接口上，进而确定该逻辑链路承载在该捆绑物理链路上，如果不同，则确定该逻辑链路没有承载在该捆绑物理链路上。
在本步骤中，如果确定该逻辑链路没有承载在该捆绑物理链路上，第二网络设备从其包括未被选择的第二物理链路检测模块中选择一个第二物理链路检测模块，然后重新执行步骤406和407的操作。
步骤408：第二网络设备将该逻辑链路的链路状态设置为该捆绑物理链路的链路状态。
在本步骤中，第二网络设备可以将该逻辑链路的链路状态输入给该第二路由模块。
可选的，第二网络设备还可以在该第二物理链路检测模块中记录该第二路由模块的标识，实现绑定该第二物理链路检测模块和第二路由模块。这样当第二路由模块请求其对应的逻辑链路的链路状态时，第二网络设备通过该第二物理链路检测模块在检测到该捆绑物理链路的链路状态时，将该逻辑链路的链路状态设置为该捆绑物理链路的链路状态，根据记录的第二路由模块的标识向第二路由模块输入该捆绑物理链路的链路状态。这样第二路由模块根据该链路状态对该逻辑链路对应的路由进行计算。
步骤409：第二网络设备通过该逻辑链路向第一网络设备发送响应报文，该响应报文包括检测成功指示。
可选的，使用诊断报文作为响应报文，该诊断报文中包括的查询模式标志字段携带检测成功指示。可选的，从数值9至31中选择一个数值作为检测成功指示。检测成功指示和检测指示可以是同一个数值或不同的数值。
步骤410：第一网络设备接收该响应报文，在该响应报文包括的绑定成功指示的触发下，将该逻辑链路的链路状态设置为该捆绑物理链路的链路状态。
在本步骤中，第一网络设备将该逻辑链路的链路状态设置为该捆绑物理链路的链路状态之后，第一网络设备可以向该第二路由模块输入该链路状态。
可选的，第一网络设备还可以在该第一物理链路检测模块中记录该第一路由模块的标识，实现绑定该第一物理链路检测模块和第一路由模块。这样当该第一路由模块再需要其对应的逻辑链路的链路状态时，第一网络设备再通过该第一物理链路检测模块在检测到该捆绑物理链路的链路状态时，将该逻辑链路的链路状态设置为该捆绑物理链路的链路状态，根据记录的第一路由模块的标识向第一路由模块发送该捆绑物理链路的链路状态。这样第一路由模块根据该链路状态对该逻辑链路对应的路由进行计算。
可选的，捆绑物理链路包括至少一个成员链路，该至少一个成员链路承载逻辑链路；第二物理链路检测模块用于检测每个成员链路的链路状态，基于每个成员链路的链路状 态获取该捆绑物理链路的链路状态。可选的，在每个成员链路的链路状态均为异常状态的情况下，获取该捆绑物理链路的链路状态为异常状态，否则，获取该捆绑物理链路的链路状态为正常状态。
其中，对于任一个成员链路，在检测该成员链路的链路状态时，第一物理链路检测模块通过该成员链路向第二物理链路检测模块发送第一报文，第二物理链路检测模块在接收第一报文后，通过该成员链路向第一物理链路检测模块发送第二报文。在发送第一报文之后的第一时长内，第一物理链路检测模块在该成员链路上接收到第二报文时，确定该成员链路的链路状态为正常状态。在发送第一报文之后的第一时长内，第一物理链路检测模块在该成员链路上没有接收到第二报文时，确定该成员链路的链路状态为异常状态。
其中，第一网络设备中的第一捆绑物理接口包括至少一个成员接口，如果使用逻辑链路检测模块来检测捆绑物理链路以及使用逻辑链路检测模块为第一路由模块提供链路状态，则逻辑链路检测模块会在第一捆绑物理接口的一个成员接口所在的单板上部署一个状态机，该状态机可以对该成员接口对应的成员链路进行检测。在该状态机异常时，该逻辑链路检测模块检测出捆绑物理链路的状态为异常状态，并向第一路由模块提供的捆绑物理链路的状态为异常状态。该状态机异常可能是该状态机所在的单板异常导致的，仅表示该成员链路可能异常。但是其他成员接口所在的单板可能仍是正常的，也就是说该捆绑物理链路中的其他成员链路可能是正常的，第一网络设备还可以使用该捆绑物理链路和第二网络设备通信，该捆绑物理链路的状态仍然为正常状态。所以使用逻辑链路检测模块为第一路由模块提供链路状态时，有可能提供错误的链路状态。
然而，第一物理链路检测模块对该捆绑物理链路包括的各成员链路进行检测，即在第一物理链路检测模块在第一捆绑物理接口包括的每个成员接口所在的单板上部署状态机，通过每个单板上的状态机可以对每个成员接口和每个成员链路进行检测，在所有的状态机异常时，才确定该捆绑物理链路异常，所以可以向第一路由模块提供精确的捆绑物理链路的链路状态。
在本申请实施例中，在第一网络设备的第一路由模块请求建立逻辑链路检测模块的情况下，第一网络设备确定第一路由模块对应的逻辑链路，获取与第一网络设备连接的捆绑物理链路的第一链路信息。根据该捆绑物理链路的第一链路信息，确定该逻辑链路是否承载在该捆绑物理链路上。在逻辑链路承载在该捆绑物理链路上，检测该捆绑物理链路的链路状态，将该逻辑链路的链路状态设置为该捆绑物理链路的链路状态，并提供给该逻辑链路对应的第一路由模块。如此承载在该捆绑物理链路上的各逻辑链路对应的第一路由模块请求建立逻辑链路检测模块时，可以各逻辑链路的链路状态设置为该捆绑物理链路的链路状态，并向各第一路由模块提供检测的链路状态，这样不需要为每个第一路由模块建立逻辑链路检测模块，减小了对网络设备的计算资源的占用，以及减小了占用网络资源。
参见图6，本申请实施例提供了一种检测链路状态的方法，该方法可以应用于如图1至3所示的任一网络架构，包括：
步骤601：第一网络设备检测捆绑物理链路的链路状态以及获取该捆绑物理链路的 第一链路信息，第一链路信息至少包括与该捆绑物理链路连接的第一捆绑物理接口的第一标识，第一捆绑物理接口是第一网络设备中的接口。
可选的，第一链路信息还可以包括与该捆绑物理链路连接的第二捆绑物理接口的第一标识，第二捆绑物理接口是第二网络设备中的接口。
可选的，在本步骤中，第一网络设备建立第一物理链路检测模块时，确定该第一物理链路检测模块对应的捆绑物理链路，通过该第一物理链路检测模块检测该捆绑物理链路的链路状态，以及从该第一物理链路检测模块获取该捆绑物理链路对应的第一链路信息。
当需要对第一网络设备和第二网络设备之间的捆绑物理链路的链路状态进行检测时，技术人员可以通过管理设备向第一网络设备输入配置信息，该配置信息包括在第一网络设备上与该捆绑物理链路连接的第一捆绑物理接口的第一标识和在第二网络设备上与该捆绑物理链路连接的第二捆绑物理接口的第一标识。第一网络设备以第一捆绑物理接口的第一标识作为源标识以及以第二捆绑物理接口的第一标识作为目的标识，生成一个用于检测该捆绑物理链路的第一物理链路检测模块。
同样，技术人员还可以通过管理设备向第二网络设备输入配置信息，该配置信息包括在第一网络设备上与该捆绑物理链路连接的第一捆绑物理接口的第一标识和在第二网络设备上与该捆绑物理链路连接的第二捆绑物理接口的第一标识。第二网络设备以第二捆绑物理接口的第一标识作为源标识以及以第一捆绑物理接口的第一标识作为目的标识，生成一个用于检测该捆绑物理链路的第二物理链路检测模块。
可选的，在第一标识为地址的情况下，在第一网络设备中第一捆绑物理接口也可以没有自己的第一标识，这样技术人员在第一网络设备上配置的配置信息不包括第一捆绑物理接口的第一标识，而是包括第一捆绑物理接口的编号信息，这样第一网络设备在生成第一物理链路检测模块时，可以从第一捆绑物理接口上的各第一逻辑接口的第一标识中选择一个第一标识，将第一捆绑物理接口的第一标识设置为选择的第一标识，然后以第一捆绑物理接口的第一标识作为源标识以及以第二捆绑物理接口的第一标识作为目的标识，生成一个用于检测该捆绑物理链路的第一物理链路检测模块。
可选的，在第一网络设备中，第一捆绑物理接口上的每个第一逻辑接口具有自己的编号信息，第一网络设备可以根据每个第一逻辑接口的编号信息，对每个第一逻辑接口进行排序，选择编号信息最大的第一逻辑接口的第一标识，或者，选择编号信息最小的第一逻辑接口的第一标识。或者，第一网络设备从每个第一逻辑接口中随机选择一个第一逻辑接口的第一标识。
同理，在第一标识为地址的情况下，在第二网络设备中第二捆绑物理接口也可以没有自己的第一标识，技术人员在第二网络设备上配置的配置信息也可以不包括第一捆绑物理接口的第一标识，而是包括第一捆绑物理接口的编号信息，第二网络设备在生成第一物理链路检测模块时，可以从第二捆绑物理接口上的各第二逻辑接口的第一标识中选择一个第一标识，将第二捆绑物理接口的第一标识设置为选择的第一标识，然后以第二捆绑物理接口的第一标识作为源标识以及以第一捆绑物理接口的第一标识作为目的标识，生成一个用于检测该捆绑物理链路的第二物理链路检测模块。
技术人员如果希望第一网络设备绑定第一物理链路检测模块和承载在该捆绑物理 链路上的每个逻辑链路对应的第一路由模块，则该配置信息中还可以包括绑定命令信息。
在本步骤中，在该配置信息包括绑定命令信息，第一网络设备在生成第一物理链路检测模块后，在该绑定命令信息的触发下，获取第一物理链路检测模块对应的捆绑物理链路的链路信息。
第一物理链路检测模块中可以包括第一物理链路检测模块对应的捆绑物理链路的链路信息，所以第一网络设备可以从第一物理链路检测模块中获取第一物理链路检测模块对应的捆绑物理链路的链路信息。或者，从该配置信息中获取第一物理链路检测模块对应的捆绑物理链路的链路信息。
在本步骤中，如果需要将第一网络设备中已存在的第一物理链路检测模块和第一路由模块绑定，则技术人员可以通过管理设备向第一网络设备输入绑定命令信息，该绑定命令信息包括该第一物理链路检测模块的标识。第一网络设备根据该绑定命令信息中的该第一物理链路检测模块的标识确定该第一物理链路检测模块，然后按本申请实施例的方法获取该第一物理链路检测模块对应的捆绑物理链路的链路信息，并继续执行本申请实施例后续的步骤。
步骤602：第一网络设备根据该捆绑物理链路的第一链路信息确定M个逻辑链路，M为大于或等于1的整数。
在第一网络设备与第二网络设备直接相连的情况下，该捆绑物理链路的第一链路信息包括的第一捆绑物理接口的第一标识。在第一网络设备通过其他网络设备与第二网络设备相连的情况下，该捆绑物理链路的第一链路信息还可以包括第二捆绑物理接口的第一标识，第二捆绑物理接口是第二网络设备上的与该捆绑物理链路连接的接口。
在本步骤中，第一网络设备根据第一捆绑物理接口的第一标识，确定位于第一捆绑物理接口且具有地址的M个第一逻辑接口，确定与该M个第一逻辑接口相连的逻辑链路，即得到M个逻辑链路。
第一网络设备可以根据第一捆绑物理接口的第一标识，从捆绑物理接口的第一标识与逻辑接口的第一标识的对应关系中获取位于第一捆绑物理接口上的各第一逻辑接口的第一标识，根据位于第一捆绑物理接口上的各第一逻辑接口的第一标识确定位于第一捆绑物理接口上的各第一链路接口，从位于第一捆绑物理接口上的各第一逻辑接口中选择具有地址的M个第一逻辑接口，确定与该M个第一逻辑接口相连的逻辑链路，即得到M个逻辑链路。
步骤603：第一网络设备从该M个逻辑链路中选择N个逻辑链路，该N个逻辑链路承载在该捆绑物理链路上，N为小于或等于M且大于或等于1的整数。
可选的，在第一网络设备与第二网络设备直接相连时，位于第一捆绑物理接口上的每个第一逻辑接口与一条逻辑链路连接，且该逻辑链路为第一网络设备与第二网络设备之间的链路，此时M与N相等，直接选择N个逻辑链路。
可选的，在第一网络设备通过其他网络设备与第二网络设备相连的情况下，对于位于第一捆绑物理接口的每个第一逻辑接口，与该第一逻辑接口连接的逻辑链路包括至少一条，该至少一条逻辑链路中存在一条逻辑链路是第一网络设备与第二网络设备之间的链路。此种情况下，从该M个逻辑链路中选择N个逻辑链路的操作可以包括如下6031 至6032的操作，该6031至6032的操作为：
6031：获取M个逻辑链路的第一链路信息。
确定该M个逻辑链路中的每个逻辑链路对应的第一路由模块，得到M个第一路由模块，对于任一个第一路由模块，任一个第一路由模块包括任一个第一路由模块对应的逻辑链路的第一链路信息。从该M个第一路由模块中获取M个逻辑链路的第一链路信息，每个逻辑链路的第一链路信息包括第二逻辑接口的第一标识，第二逻辑接口可能是第二网络设备上的接口。
6032：根据该M个逻辑链路的第一链路信息和该捆绑物理链路的第一链路信息，确定位于第二捆绑物理接口上的N个第二逻辑接口，第二捆绑物理接口是第二网络设备上的与捆绑物理链路相连的接口。
该捆绑物理链路的第一链路信息包括的第二捆绑物理接口的第一标识。在本步骤中，根据第二捆绑物理接口的第一标识，从第一标识与第二标识的对应关系中获取第二捆绑物理接口的第二标识。对任一个逻辑链路的第一链路信息包括的第二逻辑接口的第一标识，根据该第二逻辑接口的第一标识，从第一标识与第二标识的对应关系中获取第二逻辑接口对应的捆绑物理接口的第二标识，在第二捆绑物理接口的第二标识与第二逻辑接口对应的捆绑物理接口的第二标识相同时，确定该第二逻辑接口位于第二捆绑接口上。
6033：选择与该N个第二逻辑接口连接的逻辑链路。
第二捆绑物理接口是第二网络设备上与该捆绑物理链路连接的接口，而该N个第二逻辑接口位于第二捆绑物理接口上，因此确定与该N个第二逻辑接口连接的逻辑链路位于该捆绑物理链路上。
在本步骤中，第一网络设备确定承载在该捆绑物理链路上的N个逻辑链路对应的第一路由模块，即得到N个第一路由模块。
在本步骤，在得到N个第一路由模块后，第一网络设备获取该第一物理链路检测模块检测的该捆绑物理链路的链路状态，在该链路状态为正常状态的情况下执行如下步骤604的操作，在该链路状态为异常状态的情况下，结束操作。
步骤604：第一网络设备通过该捆绑物理链路向第二网络设备发送诊断报文，该诊断报文包括检测指示。
该检测指示用于指示第二网络设备将承载在该捆绑物理链路上的该N个逻辑链路的链路状态设置为该捆绑物理链路的链路状态。
可选的，该诊断报文中的查询模式标志字段包括该检测指示。
在第二网络设备上包括用于检测该捆绑物理链路的第二物理链路检测模块和该N个逻辑链路中的每个逻辑链路对应的第二路由模块。
步骤605：第二网络设备从该捆绑物理链路上接收该诊断报文，在诊断报文包括的检测指示的触发下检测该捆绑物理链路的链路状态以及获取该捆绑物理链路的第二链路信息。
在本步骤中，第二网络设备从该捆绑物理链路上接收该诊断报文，在诊断报文包括的检测指示的触发下确定该捆绑物理链路对应的第二物理链路检测模块，通过该第二物理链路检测模块检测该捆绑物理链路的链路状态，以及从该第二物理链路检测模块中获 取该捆绑物理链路的第二链路信息，第二链路信息可以包括该捆绑物理链路经过的第二捆绑物理接口的第一标识，还可以包括该捆绑物理链路经过的第一捆绑物理接口的第一标识。
步骤606：第二网络设备根据该捆绑物理链路的第二链路信息确定Q个逻辑链路，Q为大于或等于1的整数。
在第一网络设备与第二网络设备直接相连的情况下，该捆绑物理链路的第二链路信息包括的第二捆绑物理接口的第一标识。在第二网络设备通过其他网络设备与第二网络设备相连的情况下，该捆绑物理链路的第二链路信息还可以包括第一捆绑物理接口的第一标识，第一捆绑物理接口是第一网络设备上的与该捆绑物理链路连接的接口。
在本步骤中，第二网络设备根据第二捆绑物理接口的第一标识，确定位于第二捆绑物理接口且具有地址的Q个第二逻辑接口，确定与该Q个第二逻辑接口相连的逻辑链路，即得到Q个逻辑链路。
第二网络设备可以根据第二捆绑物理接口的第一标识，从捆绑物理接口的第一标识与逻辑接口的第一标识的对应关系中获取位于第二捆绑物理接口上的各第二链路接口的第一标识，根据位于第二捆绑物理接口上的各第二链路接口的第一标识确定位于第二捆绑物理接口上的各第二链路接口，从位于第二捆绑物理接口上的各第二逻辑接口中选择具有地址的Q个第二逻辑接口，确定与该Q个第二逻辑接口相连的逻辑链路，即得到Q个逻辑链路。
步骤607：第二网络设备从该Q个逻辑链路中选择N个逻辑链路，该N个逻辑链路承载在该捆绑物理链路上，N为小于或等于Q且大于或等于1的整数。
可选的，在第二网络设备与第一网络设备直接相连时，位于第二捆绑物理接口上的每个第二逻辑接口与一条逻辑链路连接，且该逻辑链路为第一网络设备与第二网络设备之间的链路，此时Q与N相等，直接选择N个逻辑链路。
可选的，在第二网络设备通过其他网络设备与第一网络设备相连的情况下，对于位于第二捆绑物理接口的每个第二逻辑接口，与该第二逻辑接口连接的逻辑链路包括至少一条，该至少一条逻辑链路中存在一条逻辑链路是第二网络设备与第一网络设备之间的链路。此种情况下，从该Q个逻辑链路中选择N个逻辑链路的操作可以包括如下6071至6072的操作，该6071至6072的操作为：
6071：获取Q个逻辑链路的第二链路信息。
确定该Q个逻辑链路中的每个逻辑链路对应的第二路由模块，得到Q个第二路由模块，对于任一个第二路由模块，任一个第二路由模块包括任一个第二路由模块对应的逻辑链路的第二链路信息。从该Q个第二路由模块中获取Q个逻辑链路的第二链路信息，每个逻辑链路的第二链路信息包括第一逻辑接口的第一标识，第一逻辑接口可能是第一网络设备上的接口。
6072：根据该Q个逻辑链路的第二链路信息和该捆绑物理链路的第二链路信息，确定位于第一捆绑物理接口上的N个第一逻辑接口，第一捆绑物理接口是第一网络设备上的与该捆绑物理链路相连的接口。
该捆绑物理链路的第二链路信息包括的第一捆绑物理接口的第一标识。在本步骤中，根据第一捆绑物理接口的第一标识，从第一标识与第二标识的对应关系中获取第一 捆绑物理接口的第二标识。对任一个逻辑链路的第二链路信息包括的第一逻辑接口的第一标识，根据该第一逻辑接口的第一标识，从第一标识与第二标识的对应关系中获取第一逻辑接口对应的捆绑物理接口的第二标识，在第一捆绑物理接口的第二标识与第一逻辑接口对应的捆绑物理接口的第二标识相同时，确定该第一逻辑接口位于第一捆绑物理接口上。
6073：选择与该N个第一逻辑接口连接的逻辑链路。
第一捆绑物理接口是第一网络设备上与该捆绑物理链路连接的接口，而该N个第一逻辑接口位于第一捆绑物理接口上，因此确定与该N个第一逻辑接口连接的逻辑链路位于该捆绑物理链路上。
其中，对于第一网络设备和第二网络设备之间的每条逻辑链路，该逻辑链路在第一网络设备中存在对应的第一路由模块以及在第二网络设备中存在对应的第二路由模块，因此在第一网络设备上存在承载在该捆绑物理链路上的N逻辑链路对应的第一路由模块，在第二网络设备上也存在该N逻辑链路对应的第一路由模块。
步骤608：第二网络设备跳过检测该N逻辑链路的链路状态，将该N个逻辑链路的链路状态设置为该捆绑物理链路的链路状态。
在本步骤中，第二网络设备还可以向该N个逻辑链路中的每个逻辑链路对应的第二路由模块分别输入每个逻辑链路的链路状态。
可选的，第二网络设备还可以绑定该N个第二路由模块和该第二物理链路检测模块，在本步骤中，第二网络设备可以在该第二物理链路检测模块中记录该N个第二路由模块的标识，实现绑定该第二物理链路检测模块和该N个第二路由模块。这样在该N个第二路由模块请求链路状态时，第二网络设备通过该第二物理链路检测模块在检测到该捆绑物理链路的链路状态时，将该N个逻辑链路的链路状态设置为该捆绑物理链路的链路状态，根据记录的该N个第二路由模块的标识向该N个第二路由模块发送该捆绑物理链路的链路状态。该第二路由模块可以根据该链路状态对该逻辑链路对应的路由进行计算，例如可以进行路由收敛或路由重选等计算操作。
可选的，第二网络设备中还可能包括该N个第二路由模块对应的逻辑链路检测模块，第二网络设备可以删除该N个第二路由模块对应的逻辑链路检测模块，以释放该N个第二路由模块对应的逻辑链路检测模块占用的计算资源和网络资源。
步骤609：第二网络设备通过该捆绑物理链路向第一网络设备发送响应报文，该响应报文包括检测成功指示。
可选的，使用诊断报文作为响应报文，该诊断报文中包括的查询模式标志字段携带检测成功指示。
步骤610：第一网络设备接收该响应报文，在该响应报文包括的检测成功指示的触发下，跳过检测该N逻辑链路的链路状态，将该N个逻辑链路的链路状态设置为该捆绑物理链路的链路状态。
在本步骤中，第二网络设备还可以向该N个逻辑链路中的每个逻辑链路对应的第一路由模块分别输入每个逻辑链路的链路状态。
可选的，第一网络设备在该响应报文包括的检测成功指示的触发下，绑定该N个第二路由模块和该第二物理链路检测模块。
可选的，第一网络设备可以在该第一物理链路检测模块中记录该N个第一路由模块的标识，实现绑定该第一物理链路检测模块和该N个第一路由模块。这样当该N个第一路由模块请求链路状态时，第一网络设备通过该第一物理链路检测模块在检测到该捆绑物理链路的链路状态时，将该N个逻辑链路的链路状态设置为该捆绑物理链路的链路状态，根据记录的N个第一路由模块的标识向该N个第一路由模块发送该捆绑物理链路的链路状态。该第一路由模块可以根据该链路状态对该逻辑链路对应的路由进行计算，例如可以进行路由收敛或路由重选等计算操作。
可选的，第一网络设备中还可能包括该N个第一路由模块对应的逻辑链路检测模块，第一网络设备可以删除该N个第一路由模块对应的逻辑链路检测模块，以释放该N个第一路由模块对应的逻辑链路检测模块占用的计算资源和网络资源。
可选的，技术人员通过管理设备为第二网络设备输入的配置信息也可以包括绑定命令消息，这样在第一网络设备和第二网设备均获取到配置信息后，第一网络设备生成第一物理链路检测模块，以及按上述601至603的操作确定N个第一路由模块，并向第二网络设备发送诊断报文。同时。第二设备也生成第二物理链路检测模块，以及按上述步骤605至607的操作确定N个第二路由模块，并向第一网络设备发送认断报文。第二网络设备在接收到第一网络设备发送的诊断报文时绑定第二物理链路检测模块和该N个第二路由模块。第一网络设备在接收到第二网络设备发送的诊断报文时缓存第一物理链路检测模块和该N个第一路由模块。
可选的，技术人员还可能触发第一网络设备删除第一捆绑物理接口的第一标识或触发第二网络设备删除第二捆绑物理接口的第一标识。第一网络设备删除第一捆绑物理接口的第一标识之前，判断与第一捆绑物理接口连接的捆绑物理链路对应的第一物理链路检测模块是否与第一路由模块绑定，如果绑定，则向技术人员对应的管理设备发送提示信息，该指示信息用于指示与第一捆绑物理接口连接的捆绑物理链路对应的第一物理链路检测模块与第一路由模块绑定。如果没有绑定，则删除第一捆绑物理接口的第一标识。同样，第二网络设备删除第二捆绑物理接口的第一标识之前，判断与第二捆绑物理接口连接的捆绑物理链路对应的第二物理链路检测模块是否与第二路由模块绑定，如果绑定，则向技术人员对应的管理设备发送提示信息，该指示信息用于指示与第二捆绑物理接口连接的捆绑物理链路对应的第二物理链路检测模块与第二路由模块绑定。如果没有绑定，则删除第二捆绑物理接口的第一标识。
在本申请实施例中，在第一网络设备的建立捆绑物理链路对应的第一物理链路检测模块后，第一网络设备获取该捆绑物理链路的第一链路信息，以及根据第一链路信息获取与第一捆绑物理接口上的M个第一逻辑接口连接的M个逻辑链路的第一链路信息。根据该M个逻辑链路的第一链路信息和该捆绑物理链路的第一链路信息，确定承载在该捆绑物理链路上的N个逻辑链路，这样将该N个逻辑链路的链路状态设置为该捆绑物理链路的链路状态。如此可以不需要检测该N个逻辑链路的链路状态，只需要向承载在该捆绑物理链路上的N个逻辑链路对应的第一路由模块输入该捆绑物理链路的链路状态就可，这样不需要为每个第一路由模块建立逻辑链路检测模块，减小了对网络设备的计算资源的占用，以及减小了占用网络资源。
参见图7，本申请实施例提供了一种检测链路状态的装置700，所述装置700可以部署在上述任一实施例中的第一网络设备上。例如可以部署在上述图4或6所示实施例的第一网络设备上，包括：
检测单元701，用于检测捆绑物理链路的链路状态，该捆绑物理链路为所述装置700与第二网络设备之间的链路；
处理单元702，用于根据该捆绑物理链路的链路信息确定N个逻辑链路，该N个逻辑链路承载在该捆绑物理链路上，N为大于或等于1的整数；
处理单元702，还用于跳过检测该N个逻辑链路的链路状态，将该N个逻辑链路的链路状态设置为该捆绑物理链路的链路状态。
可选的，检测单元701检测链路状态的详细实现过程，可以参见图4所述实施例中的步骤402或图6所示实施例中的步骤601中第一网络设备检测链路状态的相关内容。
可选的，处理单元702确定N个逻辑链路的详细实现过程，可以参见图4所述实施例中的步骤403或图6所示实施例中的步骤603中第一网络设备确定逻辑链路的相关内容。
可选的，处理单元702，用于：
根据该捆绑物理链路的链路信息，确定位于第一捆绑物理接口上的M个第一逻辑接口，M为大于或等于N的整数，第一捆绑物理接口是所述装置700上的与该捆绑物理链路连接的接口；
从M个逻辑链路中选择N个逻辑链路，该M个逻辑链路是与该M个第一逻辑接口连接的逻辑链路。
可选的，处理单元602，用于根据该捆绑物理链路的链路信息，确定位于第一捆绑物理接口上且具有地址的M个第一逻辑接口。
可选的，处理单元602，用于：
获取M个逻辑链路的链路信息；
根据该M个逻辑链路的链路信息和该捆绑物理链路的链路信息，确定位于第二捆绑物理接口上的N个第二逻辑接口，第二捆绑物理接口是第二网络设备上的与该捆绑物理链路相连的接口；
选择与N个第二逻辑接口连接的逻辑链路。
可选的，处理单元702确定N个第二逻辑接口的详细实现过程，可以参见图6所示实施例中的步骤6031至6032中第一网络设备确定第二逻辑接口的相关内容。
可选的，处理单元602，还用于根据该N个逻辑链路中的每个逻辑链路的链路状态，分别对每个逻辑链路对应的路由进行计算。
可选的，参见图7，所述装置700还包括：
发送单元703，用于向第二网络设备发送诊断报文，该诊断报文包括检测指示，该检测指示用于指示第二网络设备检测该捆绑物理链路的链路状态以及将N个逻辑链路的链路状态设置该捆绑物理链路的链路状态。
可选的，诊断报文的查询模式标志字段包括该检测指示。
在本申请实施例中，检测单元检测捆绑物理链路的链路状态。处理单元根据该捆绑物理链路的链路信息，确定承载在该捆绑物理链路上的N个逻辑链路，N为大于或等于 1的整数。然后处理单元跳过检测该N个逻辑链路的链路状态，将该N个逻辑链路的链路状态设置为该捆绑物理链路的链路状态。这样只需要检测单元检测一个捆绑物理链路的链路状态，就可以得到N个逻辑链路的链路状态，不需要检测该N个逻辑链路中的每个逻辑链路的链路状态，从而减小了占用网络设备的计算资源，也减小了占用通信网络的网络资源。
参见图8，本申请实施例提供的一种检测链路状态的装置800示意图。所述装置800可以是上述任一实施例中的第一网络设备。例如可以是上述图4或6所示实施例中的第一网络设备，该装置800包括至少一个处理器801，总线系统802，存储器803以及至少一个收发器804。
该装置800是一种硬件结构的装置，可以用于实现图7所述的装置700中的功能模块。例如，本领域技术人员可以想到图7所示的装置700中的检测单元701和处理单元702可以通过该至少一个处理器801调用存储器803中的代码来实现，图7所示的装置700中的发送单元703可以通过该收发器804来实现。
可选的，该装置800还可用于实现上述任一实施例中采集分析设备的功能。
可选的，上述处理器801可以是一个通用中央处理器(central processing unit，CPU)，微处理器，特定应用集成电路(application-specific integrated circuit，ASIC)，或一个或多个用于控制本申请方案程序执行的集成电路。
上述总线系统802可包括一通路，在上述组件之间传送信息。
上述收发器804，用于与其他设备或通信网络通信。
上述存储器803可以是只读存储器(read-only memory，ROM)或可存储静态信息和指令的其他类型的静态存储设备，随机存取存储器(random access memory，RAM)或者可存储信息和指令的其他类型的动态存储设备，也可以是电可擦可编程只读存储器(electrically erasable programmable read-only memory，EEPROM)、只读光盘(compact disc read-only memory，CD-ROM)或其他光盘存储、光碟存储(包括压缩光碟、激光碟、光碟、数字通用光碟、蓝光光碟等)、磁盘存储介质或者其他磁存储设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质，但不限于此。存储器可以是独立存在，通过总线与处理器相连接。存储器也可以和处理器集成在一起。
其中，存储器803用于存储执行本申请方案的应用程序代码，并由处理器801来控制执行。处理器801用于执行存储器803中存储的应用程序代码，从而使得该装置800实现本专利方法中的功能。
在具体实现中，作为一种实施例，处理器801可以包括一个或多个CPU，例如图8中的CPU0和CPU1。
在具体实现中，作为一种实施例，该装置800可以包括多个处理器，例如图8中的处理器801和处理器807。这些处理器中的每一个可以是一个单核(single-CPU)处理器，也可以是一个多核(multi-CPU)处理器。这里的处理器可以指一个或多个设备、电路、和/或用于处理数据(例如计算机程序指令)的处理核。
本领域普通技术人员可以理解实现上述实施例的全部或部分步骤可以通过硬件来完成，也可以通过程序来指令相关的硬件完成，所述的程序可以存储于一种计算机可读存储介质中，上述提到的存储介质可以是只读存储器，磁盘或光盘等。
以上所述仅为本申请一个实施例，并不用以限制本申请，凡在本申请的原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (15)

  1. 一种检测链路状态的方法，其特征在于，所述方法包括：
    第一网络设备检测捆绑物理链路的链路状态，所述捆绑物理链路为所述第一网络设备与第二网络设备之间的链路；
    所述第一网络设备根据所述捆绑物理链路的链路信息确定N个逻辑链路，所述N个逻辑链路承载在所述捆绑物理链路上，N为大于或等于1的整数；
    所述第一网络设备跳过检测所述N个逻辑链路的链路状态，将所述N个逻辑链路的链路状态设置为所述捆绑物理链路的链路状态。
  2. 如权利要求1所述的方法，其特征在于，所述根据所述捆绑物理链路的链路信息确定N个逻辑链路，包括：
    根据所述捆绑物理链路的链路信息，确定位于第一捆绑物理接口上的M个第一逻辑接口，M为大于或等于N的整数，所述第一捆绑物理接口是所述第一网络设备上的与所述捆绑物理链路连接的接口；
    从M个逻辑链路中选择N个逻辑链路，所述M个逻辑链路是与所述M个第一逻辑接口连接的逻辑链路。
  3. 如权利要求2所述的方法，其特征在于，所述根据所述捆绑物理链路的链路信息，确定位于第一捆绑物理接口上的M个第一逻辑接口，包括：
    根据所述捆绑物理链路的链路信息，确定位于第一捆绑物理接口上且具有地址的M个第一逻辑接口。
  4. 如权利要求2或3所述的方法，其特征在于，所述从M个逻辑链路中选择N个逻辑链路，包括：
    获取M个逻辑链路的链路信息；
    根据所述M个逻辑链路的链路信息和所述捆绑物理链路的链路信息，确定位于第二捆绑物理接口上的N个第二逻辑接口，第二捆绑物理接口是所述第二网络设备上的与所述捆绑物理链路相连的接口；
    选择与所述N个第二逻辑接口连接的逻辑链路。
  5. 如权利要求1至4任一项所述的方法，其特征在于，所述将所述N个逻辑链路的链路状态设置为所述捆绑物理链路的链路状态之后，还包括：
    根据所述N个逻辑链路中的每个逻辑链路的链路状态，分别对所述每个逻辑链路对应的路由进行计算。
  6. 如权利要求1至5任一项所述的方法，其特征在于，所述根据所述捆绑物理链路的链路信息确定N个逻辑链路之后，还包括：
    向所述第二网络设备发送诊断报文，所述诊断报文包括检测指示，所述检测指示用于指示所述第二网络设备检测所述捆绑物理链路的链路状态以及将所述N个逻辑链路 的链路状态设置所述捆绑物理链路的链路状态。
  7. 如权利要求6所述的方法，其特征在于，所述诊断报文的查询模式标志字段包括所述检测指示。
  8. 一种检测链路状态的装置，其特征在于，所述装置包括：
    检测单元，用于检测捆绑物理链路的链路状态，所述捆绑物理链路为所述装置与第二网络设备之间的链路；
    处理单元，用于根据所述捆绑物理链路的链路信息确定N个逻辑链路，所述N个逻辑链路承载在所述捆绑物理链路上，N为大于或等于1的整数；
    所述处理单元，还用于跳过检测所述N个逻辑链路的链路状态，将所述N个逻辑链路的链路状态设置为所述捆绑物理链路的链路状态。
  9. 如权利要求8所述的装置，其特征在于，所述处理单元，用于：
    根据所述捆绑物理链路的链路信息，确定位于第一捆绑物理接口上的M个第一逻辑接口，M为大于或等于N的整数，所述第一捆绑物理接口是所述装置上的与所述捆绑物理链路连接的接口；
    从M个逻辑链路中选择N个逻辑链路，所述M个逻辑链路是与所述M个第一逻辑接口连接的逻辑链路。
  10. 如权利要求9所述的装置，其特征在于，所述处理单元，用于根据所述捆绑物理链路的链路信息，确定位于第一捆绑物理接口上且具有地址的M个第一逻辑接口。
  11. 如权利要求9或10所述的装置，其特征在于，所述处理单元，用于：
    获取M个逻辑链路的链路信息；
    根据所述M个逻辑链路的链路信息和所述捆绑物理链路的链路信息，确定位于第二捆绑物理接口上的N个第二逻辑接口，第二捆绑物理接口是所述第二网络设备上的与所述捆绑物理链路相连的接口；
    选择与所述N个第二逻辑接口连接的逻辑链路。
  12. 如权利要求8至11任一项所述的装置，其特征在于，所述处理单元，还用于根据所述N个逻辑链路中的每个逻辑链路的链路状态，分别对所述每个逻辑链路对应的路由进行计算。
  13. 如权利要求8至12任一项所述的装置，其特征在于，所述装置还包括：
    发送单元，用于向所述第二网络设备发送诊断报文，所述诊断报文包括检测指示，所述检测指示用于指示所述第二网络设备检测所述捆绑物理链路的链路状态以及将所述N个逻辑链路的链路状态设置所述捆绑物理链路的链路状态。
  14. 如权利要求13所述的装置，其特征在于，所述诊断报文的查询模式标志字段包括所述检测指示。
  15. 一种检测链路状态的装置，其特征在于，所述装置包括：
    处理器和存储器，所述存储器用于存储一个或多个程序，所述处理器用于执行所述存储器中的一个或多个程序，使得所述装置完成如权利要求1至7任一项所述的方法。
PCT/CN2020/125670 2019-10-31 2020-10-31 检测链路状态的方法及装置 WO2021083375A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP20880876.6A EP4044510A4 (en) 2019-10-31 2020-10-31 METHOD AND APPARATUS FOR DETECTING LINK STATES
US17/730,951 US20220255831A1 (en) 2019-10-31 2022-04-27 Method and apparatus for detecting link status

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201911055864.2A CN112751724B (zh) 2019-10-31 2019-10-31 检测链路状态的方法及装置
CN201911055864.2 2019-10-31

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US17/730,951 Continuation US20220255831A1 (en) 2019-10-31 2022-04-27 Method and apparatus for detecting link status

Publications (1)

Publication Number Publication Date
WO2021083375A1 true WO2021083375A1 (zh) 2021-05-06

Family

ID=75644759

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/125670 WO2021083375A1 (zh) 2019-10-31 2020-10-31 检测链路状态的方法及装置

Country Status (4)

Country Link
US (1) US20220255831A1 (zh)
EP (1) EP4044510A4 (zh)
CN (1) CN112751724B (zh)
WO (1) WO2021083375A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113438178A (zh) * 2021-06-22 2021-09-24 北京天融信网络安全技术有限公司 报文转发方法、装置、计算机设备和存储介质

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11991144B2 (en) * 2022-04-28 2024-05-21 Cisco Technology, Inc. Seamless MAC address rotation in multi-link device using multiple IP stacks

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101227416A (zh) * 2008-01-15 2008-07-23 中兴通讯股份有限公司 一种通信网络中链路带宽分配方法
EP2618521A1 (en) * 2010-09-14 2013-07-24 Huawei Technologies Co., Ltd. Method, apparatus and system for link aggregation failure protection
CN107736004A (zh) * 2015-06-30 2018-02-23 高通股份有限公司 回程网络中的话务流迁移
CN109088822A (zh) * 2018-09-21 2018-12-25 平安科技（深圳）有限公司 数据流量转发方法、装置、系统、计算机设备及存储介质

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4765765B2 (ja) * 2006-05-23 2011-09-07 ヤマハ株式会社 電子楽器システム及びそのためのプログラム
CN100531147C (zh) * 2007-03-07 2009-08-19 华为技术有限公司 多链路捆绑协议报文分片接收方法
CN101132320B (zh) * 2007-09-18 2010-06-16 华为技术有限公司 检测接口故障的方法及网络节点设备
CN101540722A (zh) * 2008-03-18 2009-09-23 华为技术有限公司 以太网链路聚合端口配置的方法和设备
US8111611B2 (en) * 2008-06-30 2012-02-07 Cisco Technology, Inc. Bidirectional forwarding detection on multilink bundled interfaces
CN101834759A (zh) * 2010-04-21 2010-09-15 中兴通讯股份有限公司 捆绑链路的检测方法及分布式设备
US20120281541A1 (en) * 2011-05-04 2012-11-08 Cisco Technology, Inc., A Corporation Of California Signaling Describing the Operation of a Link Bundle
US11706127B2 (en) * 2017-01-31 2023-07-18 Vmware, Inc. High performance software-defined core network
CN106911533B (zh) * 2017-02-13 2020-01-03 杭州迪普科技股份有限公司 一种链路状态的探测方法及装置
EP3861687A1 (en) * 2018-11-30 2021-08-11 Huawei Technologies Co., Ltd. System and method to recover from link or node failure in a network
US11442876B2 (en) * 2019-05-30 2022-09-13 Intel Corporation System, apparatus and method for synchronizing multiple virtual link states over a package interconnect
US10992515B1 (en) * 2019-06-10 2021-04-27 Cisco Technology, Inc. Link state tracking for virtual interfaces

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101227416A (zh) * 2008-01-15 2008-07-23 中兴通讯股份有限公司 一种通信网络中链路带宽分配方法
EP2618521A1 (en) * 2010-09-14 2013-07-24 Huawei Technologies Co., Ltd. Method, apparatus and system for link aggregation failure protection
CN107736004A (zh) * 2015-06-30 2018-02-23 高通股份有限公司 回程网络中的话务流迁移
CN109088822A (zh) * 2018-09-21 2018-12-25 平安科技（深圳）有限公司 数据流量转发方法、装置、系统、计算机设备及存储介质

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP4044510A4

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113438178A (zh) * 2021-06-22 2021-09-24 北京天融信网络安全技术有限公司 报文转发方法、装置、计算机设备和存储介质

Also Published As

Publication number Publication date
CN112751724B (zh) 2023-07-11
EP4044510A4 (en) 2022-11-16
CN112751724A (zh) 2021-05-04
EP4044510A1 (en) 2022-08-17
US20220255831A1 (en) 2022-08-11

Similar Documents

Publication Publication Date Title
JP6445621B2 (ja) 分散型ロードバランサ
JP6169251B2 (ja) 分散型ロードバランサにおける非対称パケットフロー
JP6030807B2 (ja) 分散型ロードバランサでの接続公開
JP6393742B2 (ja) 分散型ロード・バランサでの多重パス経路指定
JP6445015B2 (ja) ミドルウェアおよびアプリケーションの実行のためにエンジニアド・システムにおいてデータサービスを提供するためのシステムおよび方法
US6847647B1 (en) Method and apparatus for distributing traffic over multiple switched fiber channel routes
US8856419B2 (en) Register access in distributed virtual bridge environment
US9325609B2 (en) Segmented source routing in a network
US9069633B2 (en) Proxy queue pair for offloading
US9450914B2 (en) Distributed proxy addressing operations
WO2021083375A1 (zh) 检测链路状态的方法及装置
JP2006262193A (ja) 制御装置、パケット転送方法およびパケット処理装置
WO2022110948A1 (zh) 路径权重分配方法以及装置
US7079491B2 (en) Method and node apparatus for filtering ICMP data frame
US20160057043A1 (en) Diagnostic routing system and method for a link access group
CN110995744B (zh) 报文的传输方法、装置、软件定义网络交换机及存储介质
WO2023093513A1 (zh) 路径感知方法、装置及系统
JP2005258632A (ja) ネットワークストレージ装置の導通確認方法およびホスト計算機
CN112104566B (zh) 一种负载均衡的处理方法和装置
US20070266127A1 (en) Internal virtual local area network (lan)
WO2016188222A1 (zh) 一种业务报文转发方法、装置及通信系统
CN113259248A (zh) 用于确定转发业务流的链路的方法及装置
CN110650222A (zh) 一种网络访问方法及装置
WO2021155663A1 (zh) 用于确定转发业务流的链路的方法及装置
US9537750B2 (en) Multicast router topology discovery

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20880876

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2020880876

Country of ref document: EP

Effective date: 20220429

NENP Non-entry into the national phase

Ref country code: DE