WO2016177049A1 - Procédé et dispositif pour exécuter une extension et une réduction de la capacité d'un appareil d'accès - Google Patents

Procédé et dispositif pour exécuter une extension et une réduction de la capacité d'un appareil d'accès Download PDF

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Publication number
WO2016177049A1
WO2016177049A1 PCT/CN2016/075231 CN2016075231W WO2016177049A1 WO 2016177049 A1 WO2016177049 A1 WO 2016177049A1 CN 2016075231 W CN2016075231 W CN 2016075231W WO 2016177049 A1 WO2016177049 A1 WO 2016177049A1
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WIPO (PCT)
Prior art keywords
access device
expansion
member information
network
contraction
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PCT/CN2016/075231
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English (en)
Chinese (zh)
Inventor
杨琴
王胜华
王辉
许劲松
胡云贵
周明
Original Assignee
中兴通讯股份有限公司
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Publication of WO2016177049A1 publication Critical patent/WO2016177049A1/fr

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    • 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
    • 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
    • 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
    • H04L41/0803—Configuration setting
    • H04L41/0813—Configuration setting characterised by the conditions triggering a change of settings
    • 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
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/02—Topology update or discovery

Definitions

  • This document relates to, but is not limited to, the field of network application technologies, and in particular, to a method and apparatus for implementing expansion and contraction of an access device.
  • IPRAN/PTN IP Radio Access Network/Packet Transport Network
  • the network of the IPRAN/PTN includes an aggregation device, an access device, and a core device.
  • a typical network of IPRAN/PTN is shown, including two B devices (aggregation devices), and several A devices (access devices) form an access layer network.
  • a core aggregation layer network where the B device is connected to the C device (core device).
  • the access layer network involves three levels of management of tunnel/pseudowire (PW)/service (Service), and also includes three levels of operation and maintenance management OAM and quality of service QoS configuration.
  • PW tunnel/pseudowire
  • Service service
  • FIG. 2A shows that a new node, that is, a new access device, needs to be added between the A device and the B device.
  • 2B simply indicates the management operations that maintenance personnel need to plan and configure, such as interface address, IGP protocol, tunnel, OAM, and other basic configurations.
  • the above-mentioned planning and configuration management operations increase the maintenance difficulty and cost of the network, and put forward high requirements for the maintenance personnel's professional capabilities. If the maintenance personnel are not very understanding and familiar with the planning and configuration management operations, it will cause maintenance. The working time is extended.
  • the embodiment of the invention provides a method and a device for realizing the expansion and contraction of an access device, which can automatically complete the operation of updating the VR information in the process of expanding and contracting, configuring the node for expanding and contracting, and the like, thereby reducing network maintenance. Difficulty and cost.
  • the embodiment of the invention provides a method for implementing expansion and contraction of an access device, and the method includes:
  • the virtual router VR information is updated according to the expansion and contraction change
  • the corresponding configuration is performed on the access device corresponding to the expansion and contraction change.
  • the detecting whether the physical topology of the network has undergone expansion and contraction changes comprises at least one of the following manners:
  • a device-related alarm is generated according to the device Trap message, and the physical topology of the network is updated by analyzing the device-related alarms, and the physical topology of the network is updated to know whether the physical topology of the network has undergone expansion and contraction changes.
  • the updating of the VR information according to the expansion and contraction change includes: when the expansion and contraction changes to a capacity change, according to the newly added first
  • the access device confirms that all member information in the VR needs to be added, and updates the member information of the VR according to all the member information.
  • the updating, according to the newly added first access device, all member information that needs to be added to the VR, and updating the member information of the VR according to the all member information includes:
  • the confirmation needs to join all member information in the first VR, and will need to join Adding the access device of the first VR to the list of added updates includes:
  • the method before the updating the member information of the first VR according to the added update list, the method further includes:
  • Performing the corresponding configuration on the access device corresponding to the expansion and contraction change includes:
  • Performing a service management configuration on the access device in the added update list where the service management configuration includes creating a tunnel, operating maintenance management OAM, and quality of service QoS configuration.
  • updating the VR information according to the expansion and contraction change includes: when the expansion and contraction change is a contraction change, according to the deleted.
  • the five access devices confirm all the member information that needs to be deleted from the VR, and update the member information of the VR according to the all member information.
  • the determining, by the fifth access device that is deleted, all the member information that needs to be deleted from the VR, and updating the member information of the VR according to the all member information includes:
  • the confirming needs all member information deleted from the second VR, and adding the access device that needs to be deleted from the second VR to the delete update list includes:
  • each sixth access device is detected, if a sixth access device And the second VR that belongs to the fifth access device, and only the fifth access device can reach the aggregation update device by using the fifth access device, and adding the sixth access device to the deletion update list.
  • the neighboring node of each sixth access device if the access device corresponding to one neighboring node belongs to the second VR corresponding to the fifth access device, and only through the fifth access device
  • the aggregation device of the network adds the access device corresponding to the neighbor node to the deletion update list, and repeats the process until all nodes in the network are traversed.
  • the method before the updating the member information of the second VR according to the deletion update list, the method further includes:
  • Performing the corresponding configuration on the access device corresponding to the expansion and contraction change includes:
  • An embodiment of the present invention provides an apparatus for implementing expansion and contraction of an access device, where the apparatus includes:
  • the topology execution unit is configured to detect whether the physical topology of the network changes in expansion or contraction
  • a data calculation unit configured to: when detecting a change in the physical topology of the network, update the virtual router VR information according to the expansion and contraction change;
  • the service management unit is configured to perform a corresponding configuration on the access device corresponding to the expansion and contraction change.
  • the topology execution unit includes at least one of the following modules:
  • the first topology module is configured to periodically scan the topology information to learn whether the physical topology of the network changes.
  • the second topology module is configured to update the physical topology of the network by analyzing the device-related alarms according to the device-related alarms generated by the device trap message, and adopt the physical topology of the network.
  • the update knows whether the physical topology of the network has undergone expansion and contraction changes.
  • the data calculation unit includes: a capacity expansion module, configured to: when the expansion and contraction change is changed to a capacity change, confirm, according to the newly added first access device, all member information that needs to be added to the VR, and according to the all The member information updates the member information of the VR.
  • a capacity expansion module configured to: when the expansion and contraction change is changed to a capacity change, confirm, according to the newly added first access device, all member information that needs to be added to the VR, and according to the all The member information updates the member information of the VR.
  • the expansion module includes:
  • the first VR acquisition sub-module is configured to acquire a second access device directly connected to the newly added first access device, and obtain a first VR corresponding to the second access device;
  • the capacity expansion VR update submodule is configured to update the member information of the first VR correspondingly according to the added update list.
  • the add update list submodule is set to:
  • the expansion module further includes: a capacity expansion service switching sub-module, configured to detect whether the service path of the first VR is affected by the expansion, and when the service path is affected, the service path of the first VR is Switch to another path;
  • a capacity expansion service switching sub-module configured to detect whether the service path of the first VR is affected by the expansion, and when the service path is affected, the service path of the first VR is Switch to another path;
  • the service management unit is configured to perform service management configuration on the access device in the added update list, where the service management configuration includes creating a tunnel, operating maintenance management OAM, and quality of service QoS configuration.
  • the data calculation unit includes:
  • the volume reduction module is configured to: when the expansion and contraction changes to a contraction change, confirm, according to the deleted fifth access device, all member information that needs to be deleted from the VR, and update the member information of the VR according to the all member information.
  • the volume reduction module includes:
  • timer sub-module set to set a timer
  • Deleting an update list sub-module setting to confirm all member information that needs to be deleted from the second VR corresponding to the fifth access device, and adding an access device that needs to be deleted from the second VR to the delete update list in;
  • the VR update sub-module is configured to delete the information of the access device in the delete update list in the second VR when the timer expires or when receiving the confirmation command, and update the update list according to the deletion Correspondingly updating the member information of the second VR.
  • the delete update list submodule is set to:
  • each sixth access device is detected, if a sixth access device And the second VR that belongs to the fifth access device, and only the fifth access device can reach the aggregation update device by using the fifth access device, and adding the sixth access device to the deletion update list.
  • the neighboring node of each sixth access device if the access device corresponding to one neighboring node belongs to the second VR corresponding to the fifth access device, and only through the fifth access device
  • the aggregation device of the network adds the access device corresponding to the neighbor node to the deletion update list, and repeats the process until all nodes in the network are traversed.
  • the volume reduction module further includes:
  • the service switching sub-module is configured to detect whether the service path of the second VR corresponding to the fifth access device is affected by the shrinkage. When the service path is affected, the service path of the second VR is switched to another path;
  • the service management unit is configured to clear the tunnel on each access device and the OAM configuration for the access device in the delete update list.
  • the embodiment of the invention further provides a computer storage medium, wherein the computer storage medium stores computer executable instructions, and the computer executable instructions are used in the above method.
  • the technical solution provided by the embodiment of the present invention includes: detecting whether a physical topology of the network has undergone expansion and contraction change; and when detecting that the physical topology of the network is changed by the expansion and contraction, according to the expansion and contraction change Update of the VR information; perform corresponding configuration on the node corresponding to the expansion and contraction change.
  • the solution of the embodiment of the present invention can automatically complete the operation of configuring the expansion and contraction of the VR information in the expansion and contraction process, thereby reducing the service capability of the maintenance personnel and reducing the difficulty of network maintenance. cost.
  • FIG. 1 is a schematic diagram of a common IPRAN/PTN network in the related art
  • 2A is a schematic diagram of adding a new node to a network in the related art
  • FIG. 2B is a schematic diagram of management operations that need to be planned and configured by maintenance personnel in the update of FIG. 2A;
  • FIG. 3 is a schematic diagram of an IPRAN/PTN SDN network
  • FIG. 4 is a schematic diagram of a VR in a network
  • FIG. 5A is a schematic diagram of a method for implementing expansion and contraction of an access device according to an embodiment of the present invention.
  • FIG. 5B is a schematic diagram of step 210 in a method for implementing expansion and contraction of an access device according to an embodiment of the present invention
  • 5C is a schematic diagram of step 220 in a method for implementing expansion and contraction of an access device according to an embodiment of the present invention
  • FIG. 6A is a schematic diagram of network composition of Embodiments 1 and 3 of the present invention.
  • FIG. 6B is a schematic diagram of a network component according to Embodiment 2 of the present invention.
  • 6C is a schematic structural diagram of a network according to Embodiment 4 of the present invention.
  • FIG. 7 is a schematic structural diagram of an apparatus for implementing expansion and contraction of an access device according to an embodiment of the present disclosure
  • FIG. 8 is a schematic diagram of a network management system in an access device expansion and contraction device presented to a user according to an embodiment of the present invention.
  • the embodiment of the invention provides a method and a device for realizing the expansion and contraction of an access device, in particular, a method and device for expanding and shrinking an IPRAN/PTN access device based on SDN (SOFT DEFINED NETWORK).
  • the IPRAN/PTN SDN network is briefly introduced.
  • the network in the embodiment of the present invention refers to an IPRAN/PTN SDN network, or an IPRAN/PTN network.
  • IPRAN/PTN SDN network Compared with the traditional IPRAN/PTN network, the SDN network-based switch or router only has the logic of the forwarding plane (data plane), mainly based on the logic of the controller to complete the forwarding, through the Openflow protocol (or other The protocol implements interworking with the SDN controller in the embodiment of the present invention, as shown in FIG. 3, which is a schematic diagram of an IPRAN/PTN SDN network.
  • data plane data plane
  • Openflow protocol or other The protocol implements interworking with the SDN controller in the embodiment of the present invention, as shown in FIG. 3, which is a schematic diagram of an IPRAN/PTN SDN network.
  • the SDN controller (Controller) communicates with the access layer network SDN switch through the Openflow protocol (or other protocol), and manages the access layer network device service information by establishing a number of virtual routers VR (Virtual ROUTER).
  • Each VR includes at least one or two B devices and a plurality of A devices, as shown in FIG. 4, which is a schematic diagram of the VR.
  • the SDN controller is responsible for automatically calculating the device topology and the service data forwarding control information, and updating the maintenance topology and the service data information in real time, and pushing the change to the access device according to the embodiment of the present invention by using the websocket method (or other means). In the device.
  • IPRAN/PTN access layer network topology information With IPRAN/PTN access layer network topology information, it can provide topology information to other systems including SDN controllers.
  • the apparatus for implementing the expansion and contraction of the access device may create a virtual router by using an application layer protocol to invoke the controller interface, or when performing the expansion instruction, the required device information may be provided by other management systems, where other A management system is a system that has topology data for the network, so the management system is optional.
  • an embodiment of the present invention provides a method for implementing expansion and contraction of an access device, where The method is applied to implement an access device expansion and contraction device, and the device includes: a server, a PC, or a virtual machine VM. As shown in FIG. 5A, the method includes:
  • step 100 it is detected whether the physical topology of the network has undergone expansion and contraction changes.
  • step 100 the detecting whether the physical topology of the network has undergone expansion and contraction changes includes at least one of the following manners:
  • the topology data changes are detected by the proprietary protocol, and the change of the topology data is used to know whether the physical topology of the network has undergone expansion and contraction changes.
  • the timing polling topology change can be implemented by two methods. One is: the SDN controller sends an LLDP packet to the device through the Openflow packout, and the device sends the packet to the neighboring device, and the neighboring device transmits the packet to the SDN controller through the packet, and so on.
  • the LLDP neighbors and links of the entire topology are detected, and the topology data of the network is obtained through the foregoing detection process.
  • the other is that the SDN controller polls the LLDP neighbors of the device through the LLDP protocol, discovers a neighbor, and continues to look up the neighbors of the neighbor until the neighbors have no neighbor discovery, and obtains the topology data of the network through the polling process. .
  • the timing polling topology change in the embodiment of the present invention can be implemented by an SDN controller.
  • step 200 when it is detected that the physical topology of the network has undergone expansion and contraction change, the VR information is updated according to the expansion and contraction change.
  • Step 200 includes:
  • Step 210 When the expansion and contraction changes to a capacity change, the VR information is updated according to the newly added first access device.
  • Step 220 When the expansion and contraction changes to a contraction change, the VR information is updated according to the deleted fifth access device.
  • the physical topology detection may be performed according to the expansion and contraction instruction sent by the user or the port change of the access device, and the physical topology of the network is detected.
  • the service protection path is automatically switched, the VR member information is automatically changed, and the original service topology and traffic forwarding path are changed.
  • step 210 when the expansion and contraction change is changed to a capacity change,
  • the update of the VR information by the first access device includes:
  • Step 211 Obtain a second access device that is directly connected to the newly added first access device, where the second access device is an existing access device in the network.
  • Step 212 Acquire a first VR corresponding to the second access device.
  • Step 213 Confirm that all member information in the first VR needs to be added, and add the access device that needs to join the first VR to the added update list.
  • Step 213 includes:
  • Step 2131 Confirm whether the first access device is added to the first VR, and if yes, add the first access device to the add update list, and if no, end the process.
  • Step 2131 includes: detecting whether the first access device corresponds to one VR in the network, and if yes, ending the process, and if not, adding the first access device to the first VR.
  • step 2132 it is confirmed whether one or more third access devices directly connected to the first access device are added to the first VR, and the neighbor nodes of the third access device are continuously determined until all network nodes are traversed, and the network access node needs to join.
  • the access device is added to the list of added updates.
  • one or more third access devices directly connected to the newly added first access device are obtained; wherein the third access device is not an existing access device in the network;
  • each third access device corresponds to one VR, and there is no corresponding VR
  • the third access device joins the add update list, and after detecting all the third access devices, continues to determine the neighbor node of the third access device, and if the neighbor node of the third access device does not correspond to a VR, The neighbor node joins the add update list and repeats the above process until all nodes in the network are traversed.
  • step 214 it is detected whether the service path of the first VR is affected by the expansion. When the service path is affected, the service path of the first VR is switched to another path. Step 214 can also be placed after step 212.
  • Step 215 Update the member information of the first VR according to the added update list. That is, storing information of the access device in the update list in the first VR,
  • the embodiment of the present invention provides a schematic diagram of step 220 in the method for implementing the expansion and contraction of the access device.
  • step 220 when the expansion and contraction change is changed to a volume change, according to the deletion.
  • the fifth update device that performs the update of the VR information includes:
  • step 221 a timer is set.
  • Step 222 It is detected whether the service path of the second VR corresponding to the fifth access device is affected by the shrinkage. When the service path is affected, the service path of the second VR is switched to another path. This step can also be placed after step 223 and before step 224.
  • Step 223, confirm all the member information that needs to be deleted from the second VR, and add the access device that needs to be deleted from the second VR to the delete update list.
  • Step 2231 Add the fifth access device to the delete update list.
  • Step 2232 Check whether the fifth access device is connected to other access devices in the second VR.
  • step 2231 and step 2232 can be replaced.
  • Step 2233 If directly connected to other access devices, perform detection on each sixth access device for one or more sixth access devices directly connected to the fifth access device, if a sixth access The device belongs to the VR corresponding to the fifth access device, and only the fifth access device can reach the aggregation device of the network, and then adds the sixth access device to the deletion update list, and continues to detect each sixth access device.
  • the neighboring node if the access device corresponding to the neighboring node belongs to the VR corresponding to the fifth access device, and only the fifth access device can reach the aggregation device of the network, the access device corresponding to the neighbor node is added to the neighboring node. Delete the update list and repeat the above process Until traversing all the nodes in the network.
  • step 224 when the timer expires or the confirmation command sent by the user is received, the information of the access device in the deletion update list is deleted in the second VR, and the member information of the second VR is updated according to the deletion update list.
  • Step 300 Perform corresponding configuration on the access device corresponding to the expansion and contraction change.
  • the step 300 includes: performing a service management configuration on the access device in the add update list, including: creating, for each access device, an access device in the update list. OAM and QoS configuration of the tunnel and access device of the aggregation device.
  • the service management unit sends the information to the access device through a protocol interface between the access device and the access device.
  • step 300 includes clearing the tunnels on each access device and the OAM configuration for the access devices in the delete update list.
  • the service management unit can be delivered to the access device through a protocol interface between the access device and the access device.
  • the embodiment of the invention provides a method for realizing the expansion and contraction of an access device, in particular, a method for expanding and shrinking an IPRAN/PTN access device based on SDN, and automatically calculating the expansion and contraction by performing topology analysis on the SDN network.
  • This solution can be used to expand and shrink the capacity.
  • the maintenance personnel plugs in and out the interconnection ports of other access devices or sends the expansion and contraction commands through the one-click operation of the network management system APP, the physical topology automatic detection and service protection can be completed. Automatic path switching, automatic change of VR member information, and changes to the original service topology and traffic forwarding path.
  • the whole process and its simplicity greatly simplify the expansion and contraction process, improve the efficiency of operators to maintain IPRAN/PTN access network expansion and shrinkage, and reduce maintenance costs.
  • the embodiment of the invention further provides a computer storage medium, wherein the computer storage medium stores computer executable instructions, and the computer executable instructions are used in the above method.
  • Embodiment 1 An example of a simple expansion process.
  • FIG. 6A is a schematic diagram of a network composition according to Embodiment 1 of the present invention, and an example of a simple capacity expansion process is given in conjunction with FIG. 6A.
  • a method for expanding and shrinking the access device includes the following steps:
  • Step 11 The user connects the A3 to the A1 by using the connection, or the user sends a capacity expansion command through the one-touch operation of the network management system APP to specify the newly added device A3.
  • Step 12 The topology execution unit perceives the change of the physical topology by polling or parsing the device TRAP alarm.
  • Step 13 The data calculation unit detects that the newly added node A3 is directly connected to A1, calculates the VR to which A1 belongs, and detects that A3 does not belong to the VR and other VRs, and is not connected to other devices, and stores A3 device information, and the flowchart is as shown in FIG. 5B.
  • the VR service information is calculated, and if the original service path is affected by the expansion, the service path is switched.
  • Step 14 Update the VR member information to which A1 belongs.
  • Step 15 The service management unit creates a tunnel to the B1B2 device and its OAM and QoS configuration on the A3, and sends the tunnel to the device through the protocol interface between the device and the device.
  • Embodiment 2 An example of a complicated expansion process.
  • FIG. 6B is a schematic diagram of a network composition according to Embodiment 2 of the present invention, and an example of a complex expansion process is shown in FIG. 6B.
  • a devices there may be multiple identical access A devices between A1 and A2, A2 and B2, and A1 and B1.
  • the expansion of the access network can be in A1 and A2, A2 and B2.
  • A1 and B1 are performed.
  • a number of A devices namely A3, A4, and A5, are added to the access network for expansion, including the following steps:
  • Step 21 The user connects the A3 to the A1 by using the connection, or the user sends a capacity expansion command through the one-touch operation of the network management system APP, and specifies the newly added device A3.
  • Step 22 The topology execution unit perceives the change of the physical topology by polling or parsing the device TRAP alarm.
  • Step 23 The data calculation unit detects that the newly added node A3 is directly connected to A1, and calculates A1.
  • the VR detects that A3 is directly connected to A4, A5, and O1 devices, and then continues to detect A4, A5, and O1 devices and their directly connected devices.
  • O1, O2, and O3 belong to other VRs, stop detecting, and store A3, A4, and A5 devices.
  • Information calculate the VR service information, if the original service path is affected by the expansion, switch the service path
  • Step 24 Update the VR member information to which A1 belongs.
  • Step 25 The service management module creates a tunnel to the B1B2 device and its OAM and QoS configuration on the A3, A4, and A5, and sends the tunnel to the device through the protocol interface between the device and the device.
  • Embodiment 3 An example of a simple shrinking process.
  • Embodiment 3 an example of a simple contraction process will be given in conjunction with FIG. 6A.
  • Step 31 The user directly disconnects the connection between the A1A3s, or the user sends a reduction command through the one-touch operation of the network management system APP, and specifies the volume reduction device A3.
  • Step 32 The topology execution unit perceives the change of the physical topology by polling or parsing the device TRAP alarm.
  • Step 33 The topology execution unit detects the shrinkage operation and sets the timer.
  • Step 34 The data calculation unit detects the service of the VR where the contraction node A3 is located, and if the service path is affected by the contraction, switches the service path to the available path.
  • Step 35 The data calculation unit detects that A3 is no longer connected to other devices of the VR in which it is located, and stores data information of the contraction node A3.
  • Step 36 When the timer expires or receives a user confirmation command, the data calculation unit updates the VR member information, and removes the condensed node A3.
  • Step 37 The service management unit sends a command to clear the tunnel and OAM configuration on the condensed node A3.
  • Embodiment 4 An example of a complex contraction process.
  • Embodiment 4 an example of a complex condensing process will be given in conjunction with FIG. 6C.
  • the suffix of the access network can be used to remove any other device except the B.
  • the A3 and other devices directly connected to the A3 are removed.
  • the method in the embodiment of the present invention is applied to the fast implementation.
  • the shrinkage of the access network device includes the following steps:
  • Step 41 The user directly disconnects the connection between A1 and A3, or the user sends a shrinking command through a one-touch operation of the network management system APP, and specifies to perform a shrinking operation on the access device A3.
  • Step 42 The topology execution unit perceives the change of the physical topology by polling or parsing the device TRAP alarm.
  • Step 43 The topology execution unit detects the shrinking operation and sets a timer.
  • Step 44 The data calculation unit detects the service of the VR where the contraction node A3 is located, and if the service path is affected by the contraction, switches the service path to the available path.
  • Step 45 The data calculation unit detects that A3 is directly connected to A4O1, and continues to detect A4O1 and its neighbor nodes. If the node belongs to the VR where A3 is located and the node can only reach the B device by shrinking the node, as shown in A4 in FIG. 6C, then This node information is stored until all node data has been traversed.
  • Step 46 When the timer expires or receives a user confirmation command, the data calculation unit updates the VR member information, and removes the contraction nodes A3 and A4.
  • Step 47 The service management unit sends a command to clear the tunnel and OAM configuration on the condensed nodes A3 and A4.
  • the embodiment of the present invention further provides an apparatus for implementing expansion and contraction of an access device.
  • an implementation of an access device is disclosed. Schematic diagram of the device, the device comprising:
  • the topology execution unit 10 is configured to detect whether a physical topology of the network changes in expansion or contraction;
  • the topology execution unit 10 may detect a change in the physical topology of the network when the user plugs in and disconnects with other access devices or when the user sends an expansion and contraction instruction.
  • the data calculation unit 20 is configured to: when detecting a change in the physical topology of the network, perform update of the virtual router VR information according to the expansion and contraction change;
  • the service management unit 30 is configured to perform a corresponding configuration on the access device corresponding to the expansion and contraction change.
  • the topology execution unit 10 includes at least one of the following modules:
  • the first topology module is configured to periodically scan the topology information to learn whether the physical topology of the network changes.
  • the second topology module is configured to update the physical topology of the network by analyzing the device-related alarms according to the device-related alarms generated by the device trap message, and learn whether the physical topology of the network is expanded or not by updating the physical topology of the network. Change the volume.
  • the data calculation unit 20 includes: an expansion module, configured to confirm that all member information that needs to be added to the VR is added according to the newly added first access device when the expansion and contraction change is changed to a capacity change, and according to The member information updates the member information of the VR.
  • the expansion module includes:
  • the first VR acquisition sub-module is configured to acquire a second access device directly connected to the newly added first access device, and obtain a first VR corresponding to the second access device;
  • the capacity expansion VR update submodule is configured to update the member information of the first VR correspondingly according to the added update list.
  • the adding update list submodule is set to:
  • the expansion module further includes: a capacity expansion service switching sub-module, configured to detect whether the service path of the first VR is affected by the expansion, and when the service path is affected, Switching the service path of the first VR to another path;
  • the service management unit 30 is configured to perform a service management configuration on the access device in the added update list, where the service management configuration includes creating a tunnel, operating maintenance management OAM, and quality of service QoS configuration.
  • the data calculation unit 20 includes:
  • the volume reduction module is configured to: when the expansion and contraction changes to a contraction change, confirm, according to the deleted fifth access device, all member information that needs to be deleted from the VR, and update the member information of the VR according to the all member information.
  • the volume reduction module includes:
  • timer sub-module set to set a timer
  • Deleting an update list sub-module setting to confirm all member information that needs to be deleted from the second VR corresponding to the fifth access device, and adding an access device that needs to be deleted from the second VR to the delete update list in;
  • the VR update sub-module is configured to delete the information of the access device in the delete update list in the second VR when the timer expires or when receiving the confirmation command, and update the update list according to the deletion Correspondingly updating the member information of the second VR.
  • the delete update list submodule is set to:
  • each sixth access device is detected, if a sixth access device And the second VR that belongs to the fifth access device, and only the fifth access device can reach the aggregation update device by using the fifth access device, and adding the sixth access device to the deletion update list.
  • the neighboring node of each sixth access device if the access device corresponding to one neighboring node belongs to the second VR corresponding to the fifth access device, and only through the fifth access device
  • the aggregation device of the network adds the access device corresponding to the neighbor node to the deletion update list, and repeats the process until all nodes in the network are traversed.
  • the volume reduction module further includes:
  • the service switching sub-module is configured to detect whether the service path of the second VR corresponding to the fifth access device is affected by the shrinkage. When the service path is affected, the service path of the second VR is switched to another path;
  • the service management unit 30 is configured to clear the tunnel on each access device and the OAM configuration for the access device in the deletion update list.
  • the method for implementing the expansion and contraction of an access device provided by the embodiment of the present invention can be implemented by using a network management system APP.
  • the network management system APP in the device for implementing the access device expansion and contraction provided by the embodiment of the present invention may be implemented based on the WEB, and invoke an interface provided by the SDN controller through an application layer protocol (such as a REST interface) to obtain an SDN controller management.
  • the network management system APP provided by the embodiment of the present invention invokes the controller interface to create a virtual router by using an application layer protocol, or when the expansion instruction is executed, the required device information may be provided by other management systems, and the system has network topology data.
  • This subsystem is optional.
  • the information such as the physical topology, the service topology, and the data traffic forwarding path after the expansion and contraction is automatically calculated, and the calculated physical topology, service topology, and data traffic forwarding path can be pushed to the APP.
  • the expansion and contraction operation is performed by using the method for realizing the expansion and contraction of the access device provided by the embodiment of the present invention, the maintenance personnel can be plugged and unplugged with other access devices, or operated by the network management system APP under one-touch operation.
  • the automatic expansion of the physical topology, the automatic switching of the service protection path, the automatic change of the VR member information, and the change of the original service topology and the traffic forwarding path can be completed.
  • the whole process and its simplicity greatly simplify the expansion and contraction process, improve the efficiency of operators to maintain IPRAN/PTN access network expansion and shrinkage, and reduce maintenance costs.
  • each module/unit in the above embodiment may be implemented in the form of hardware, for example, by implementing an integrated circuit to implement its corresponding function, or may be implemented in the form of a software function module, for example, executing a program stored in the memory by a processor. / instruction to achieve its corresponding function.
  • the invention is not limited to any specific form of combination of hardware and software.
  • the foregoing technical solution can automatically complete the operation of configuring the expansion and contraction of the VR information in the process of expanding and contracting, reducing the requirement for the maintenance personnel, and reducing the difficulty and cost of network maintenance.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Computer And Data Communications (AREA)

Abstract

L'invention concerne un procédé et un dispositif pour exécuter une extension et une réduction de la capacité d'un appareil d'accès. Le procédé comprend les étapes consistant à : détecter si une extension de capacité ou une réduction de capacité de la topologie physique d'un réseau s'est produite ; si c'est le cas, exécuter une mise à jour d'informations de routeur virtuel (VR) d'après un changement de l'extension de la capacité ou de la réduction de capacité ; et exécuter une configuration correspondante sur un appareil d'accès correspondant au changement de l'extension de capacité ou la réduction de capacité. La solution technique susmentionnée peut exécuter automatiquement des opérations telles qu'une mise à jour d'informations de VR et une configuration de nœuds dans un procédé d'extension ou de réduction de capacité. En cela elle réduit des exigences d'aptitudes au service des personnels d'entretien et elle réduit également la complexité et les coûts de maintenance du réseau.
PCT/CN2016/075231 2015-08-31 2016-03-01 Procédé et dispositif pour exécuter une extension et une réduction de la capacité d'un appareil d'accès WO2016177049A1 (fr)

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