CN105791074A - Method and device for establishing PW (Pseudo Wire) links - Google Patents
Method and device for establishing PW (Pseudo Wire) links Download PDFInfo
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- CN105791074A CN105791074A CN201410828985.7A CN201410828985A CN105791074A CN 105791074 A CN105791074 A CN 105791074A CN 201410828985 A CN201410828985 A CN 201410828985A CN 105791074 A CN105791074 A CN 105791074A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/46—Interconnection of networks
Abstract
The embodiment of the invention discloses a method and device for establishing PW (Pseudo Wire) links. The method may comprise following steps of obtaining L2VPN (L2 Virtual Private Network) resource information of each network element device and a route topological relationship; obtaining LSP (Label Switching Path) tunnel information among the network element devices; obtaining an L2VPN service configuration command input by a user; calculating PW link information of a master network element device and other network element devices according to the L2VPN resource information of each network element device, the route topological relationship, the LSP tunnel information and the L2VPN service configuration command; and sending the PW link information to each network element device. According to the technical scheme provided by the invention, the problem in the related technique that the configuration is complex because a lot of data and parameters need to be configured manually when the PW links are configured among the network element devices during networking is solved, and the complex degree of the configuration of the PW links is reduced.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of method setting up PW link and device.
Background technology
In e-learning quality process, MPLS (MultipleProtocolLabelSwitching, i.e. multiple protocol label switching) network is increasingly becoming existing ATM (AsynchronousTransferMode, i.e. asynchronous transfer mode), TDM (Time-DivisionMultiplexing, i.e. time division multiplexing), FR (FrameRelay, i.e. frame relay) and the backbone network of telephone network, miscellaneous service stream is pooled on unified MPLS network platform and carries out exchange at a high speed.For operator; utilize MPLS technology as the ability of multibusiness network platform; existing device resource can be made full use of; protection existing network (ATM, TDM and FR) investment; and realize dilatation on MPLS network basis; expand service coverage face, moreover it is possible to realize its ATM, TDM or FR user's intercommunication simultaneously.So not only reduced investment outlay and but also reduced operation maintenance expense.
As shown in Figure 1, correlation technique is at IPRAN (InternetProtocolRadioAccessNetwork, i.e. wireless access network IPization) in the typical networking mode of network, substantial amounts of L2VPN (L2VirtualPrivateNetwork is needed during network organizing, i.e. Layer 2 virtual private network) configuration, it is necessary to each networking equipment is planned and configures mass data.Present manufacturer configuration data is substantially similar; Fig. 1 describes the configuration parameter of networking equipment; this is wherein but without including the BFD (Bidirectionalforwardingdetection that is correlated with; i.e. two-way converting detection) detection configures, Qos (QualityofService; i.e. service quality), OAM (OperationAdministrationandMaintenance, namely operation, management and safeguard) detection, protection group attribute etc. be correlated with a lot of configuration parameters.The high speed development of network especially now, equipment disperses distribution, there is various protocols and coordinate between network access equipment with convergence device.When operation, it is necessary to the substantial amounts of data of human configuration and parameter.Generally require professional and carry out configuration and commissioning device for a long time.
For, in correlation technique, configuring PW link, need the substantial amounts of data of human configuration and parameter on network devices in networking between each network element device, what cause configures loaded down with trivial details problem, not yet proposes effective solution at present.
Summary of the invention
In order at least solve to configure between each network element device in networking PW link, needing the substantial amounts of data of human configuration and parameter on network devices, what cause configures loaded down with trivial details problem, the invention provides a kind of method setting up pseudo-wire PW link and device.
For realizing goal of the invention, according to an aspect of the invention, it is provided a kind of method setting up pseudo-wire PW link includes: obtain Layer 2 virtual private network L2VPN resource information and the route topological relation of each network element device；Obtain the label distribution protocol lsp tunnel information between described each network element device；Obtain the L2VPN business configuration order of user's input；According to the L2VPN resource information of described each network element device, route topological relation, lsp tunnel information and described L2VPN business configuration order, calculate the PW link information of the pseudo-wire PW link of master network element equipment and other network element devices；Issue described PW link information extremely described each network element device.
Preferably, issuing described PW link information to before each network element device described, the method also includes: whether the L2VPN business configuration order of detection user's input is correct；If it is not, then report error message and reason, obtain the amended L2VPN business configuration order of user.
Preferably, described each network element device described that is issued to by described PW link information includes: when breaking down in issuing process, calculate the number of times issuing failure；When issuing the number of times of failure not up to the numerical value pre-set, described PW link information is issued to again each network element device described；When issuing the frequency of failure and reaching the numerical value pre-set, terminate issuing described PW link information, reporting fault information.
Preferably, the method also includes: whether the route topological relation of detection network element device changes；When the route topological relation of described network element device changes, obtain the route topological relation of new network element device；Recalculate the PW link information of the PW link of master network element equipment and other network element devices.
Preferably, the method also includes: detect whether the lsp tunnel annexation of instruction in described lsp tunnel information changes, and/or in described lsp tunnel information, whether the lsp tunnel resource utilization of instruction exceedes predetermined threshold；When described lsp tunnel annexation changes, and/or when described lsp tunnel resource utilization exceedes predetermined threshold, recalculate the PW link information of described PW link.
Preferably, the L2VPN business configuration order of described user input includes at least one of: L2VPN networking type of service, network element device port access port AC point, appointment main/slave link.
Preferably, when the L2VPN business configuration order obtaining user's input includes specifying main/slave link, the PW link information of the PW link calculating master network element equipment and other network element devices also includes: calculate the PW link information of the active and standby PW link of master network element equipment and other network element devices.
Preferably, the PW link information of the active and standby PW link of described calculating master network element equipment and other network element devices includes: calculate the PW link information of active and standby PW link according to the constraints pre-set.
Preferably, described constraints includes at least one of: routing metric, RSVP, user's assigned priority.
Preferably, the PW link information of the PW link of described calculating master network element equipment and other network element devices includes: adopt CSPF algorithm to calculate the PW link information of master network element equipment and the PW link of other network element devices.
According to a further aspect in the invention, a kind of device for setting up pseudo-wire PW link is additionally provided, it is characterised in that including: the first acquisition module, for obtaining Layer 2 virtual private network L2VPN resource information and the route topological relation of each network element device；Second acquisition module, for obtaining the label distribution protocol lsp tunnel information between described each network element device；3rd acquisition module, for obtaining the L2VPN business configuration order of user's input；First computing module, for according to the L2VPN resource information of described each network element device, route topological relation, lsp tunnel information and described L2VPN business configuration order, calculating the PW link information of the pseudo-wire PW link of master network element equipment and other network element devices；Issue module, be used for issuing described PW link information extremely described each network element device.
Preferably, this device also includes: first detection module, and for issuing described PW link information to before each network element device described described, whether the L2VPN business configuration order of detection user's input is correct；4th acquisition module, for if it is not, then report error message and reason, obtaining the amended L2VPN business configuration order of user.
Preferably, issue module and include: counting unit, during for breaking down in issuing process, calculate the number of times issuing failure；Rollback unit, for when issuing the number of times of failure not up to the numerical value pre-set, being again issued to each network element device described by described PW link information；Report unit, for when issuing the frequency of failure and reaching the numerical value pre-set, terminating issuing described PW link information, reporting fault information.
Preferably, this device also includes: the second detection module, and whether the route topological relation for detecting network element device changes；5th acquisition module, for described when the route topological relation of network element device changes, obtains the route topological relation of new network element device；Second computing module, for recalculating the PW link information of the PW link of master network element equipment and other network element devices.
Preferably, this device also includes: the 3rd detection module, and for detecting whether the lsp tunnel annexation of instruction in described lsp tunnel information changes, and/or in described lsp tunnel information, whether the lsp tunnel resource utilization of instruction exceedes predetermined threshold；3rd computing module, for changing when described lsp tunnel annexation, and/or when lsp tunnel resource utilization exceedes predetermined threshold, recalculates the PW link information of described PW link.
Preferably, this device also includes: the 4th computing module, for including specifying main/slave link in the L2VPN business configuration order obtaining user's input, calculates the PW link information of the active and standby PW link of master network element equipment and other network element devices.
By the present invention, adopt the L2VPN resource information and route topological relation that obtain each network element device；Obtain the lsp tunnel information between described each network element device；Obtain the L2VPN business configuration order of user's input；According to the L2VPN resource information of described each network element device, route topological relation, lsp tunnel information and described L2VPN business configuration order, calculate the PW link information of the PW link of master network element equipment and other network element devices；Issue the described PW link information technical scheme to described each network element device, solve in correlation technique, networking configures PW link, it is necessary to the substantial amounts of data of human configuration and parameter between each network element device, what cause configures loaded down with trivial details problem, reduces the fussy degree of configuration PW link.
Accompanying drawing explanation
Accompanying drawing is for providing a further understanding of the present invention, and constitutes a part for description, is used for together with embodiments of the present invention explaining the present invention, is not intended that limitation of the present invention.
Fig. 1 is in correlation technique when setting up PW link, the schematic diagram of L2VPN business configuration order and configuration data；
Fig. 2 is the flow chart of a kind of method setting up PW link according to embodiments of the present invention；
Fig. 3 is the flow chart that another kind according to embodiments of the present invention sets up the method for PW link；
Fig. 4 is the structural representation of a kind of device for setting up PW link according to embodiments of the present invention；
Fig. 5 is the structural representation of a kind of according to the preferred embodiment of the invention device for setting up PW link；
Fig. 6 is a kind of according to the preferred embodiment of the invention network element device networking schematic diagram for setting up PW link；
Fig. 7 is the business configuration passage NETCONFIG schematic diagram between a kind of according to the preferred embodiment of the invention networking equipment for setting up PW link；
The network tunnel that Fig. 8 is a kind of according to the preferred embodiment of the invention networking equipment for setting up PW link forwards generation schematic diagram；
Fig. 9 is that a kind of according to the preferred embodiment of the invention business configuration for setting up PW link issues schematic diagram.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Should be appreciated that specific embodiment described herein is only in order to explain the present invention, is not intended to limit the present invention.
It should be noted that when not conflicting, the embodiment in the application and the feature in embodiment can be mutually combined.And, although illustrate logical order in flow charts, but in some cases, it is possible to perform shown or described step with the order being different from herein.Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
Fig. 1 is in correlation technique when setting up PW link, the schematic diagram of L2VPN business configuration order and configuration data；Such as table 1, it is shown that in correlation technique when setting up PW link, it is necessary to input substantial amounts of business configuration order and configuration data on network element device.
Present embodiments provide a kind of method setting up PW link.Fig. 2 is the flow chart of a kind of method setting up PW link according to embodiments of the present invention.As in figure 2 it is shown, the method may include steps of:
Step S200: obtain L2VPN resource information and the route topological relation of each network element device；
Network element device powers on, and builds physical network, and equipment room is mutually direct-connected, and this stage is mainly the configuration of basic network construction work, and the initialization of network element powers on.Network element device can be the network equipment such as router, gateway.Network element device configuration network inter-domain routing, network topology generates, and route forwarding table is formed, and basic routing forwarding is got through.
By being communicated by agreement after connecting with certain the A network element device being directly connected to, other network element devices in network can also be communicated after directly setting up connection by A network element device transfer, namely can by being connected with wherein any one network element device, by (distinguishing band external schema: all of equipment has independent physical cord to directly link) in being with, mode communicates with other routing network element devices.
Pass through communication protocol, can be SNMP (SimpleNetworkManagementProtocol, i.e. Simple Network Management Protocol), network configuration NETCONFIG agreement, remote terminal protocol telnet agreement or other can transmit any communication protocol of configuration data, obtain the L2VPN resource information of each network element device and obtain current route topological relation.Mainly using SSH agreement (SecureShell, i.e. safety shell protocol) to obtain and issue configuration information with NETCONFIG protocol mode below is the content that example describes the embodiment of the present invention.The L2VPN resource information of network element device mentioned here refers to that configuration capacity supports information, such as may include that network element device supports maximum business configuration amount, the label range of distribution of business, it is possible to the service configuration informations such as the business PW interface resource of distribution, accessible port type.
Step S202: obtain the lsp tunnel information between described each network element device；
Network element device can form LSP (LabelSwitchingPath, i.e. tag transform path agreement) tunnel between inter-domain routing and adjacent route.LSP forwarding tunnel can be formed, it is possible to be that dynamic protocol generates or directly configuration static state tunnel between any network element device；Here mainly use tunnel, be not just described in detail.When creating lsp tunnel, some configuration parameters can be set.
Lsp tunnel can pass through the notify function of NETCONFIG agreement and externally make an announcement after generating, naturally it is also possible to use the informing function of other agreements.By obtaining this announcement information, recording the tunnel information of each device node, mainly the node end to end in tunnel, directivity etc., can obtain the lsp tunnel information between each network element device.
Step S204: obtain the L2VPN business configuration order of user's input；
Network element device or self-existent PW link establishment device can directly accept the input of the L2VPN business configuration order of user.The L2VPN business configuration order of user's input can comprise L2VPN networking type of service, can be such as VPWS (VirtualPrivateWireService, i.e. VLL service), VPLS (VirtualPrivateLanService, i.e. VPLS) etc..Can also comprise specify access interface AC (accesspoint) point belonging to network element device, for instance network element device port AC point, namely AC1 belong to A1 network element device be master network element, AC2 belongs to A3 network element device, AC3 belongs to A4 network element device.Namely master network element node is indicated, if need to form the user's request configurations such as PW protection group, AC2, AC3 are binding access interface.In some business networking types, specifying active and standby PW link without acquiescence, main/slave link specified by L2VPN business configuration order also storehouse bag.
Step S206: according to the L2VPN resource information of described each network element device, route topological relation, lsp tunnel information and described L2VPN business configuration order, calculate the PW link information of the pseudo-wire PW link of master network element equipment and other network element devices；
Step S200, step S202, step S204 order be dividing of not successively restrictioning.According to the L2VPN resource information of each network element device, route topological relation, lsp tunnel information and described L2VPN business configuration order that step S200, S202, S204 obtain respectively, calculate the PW link information of the PW link of master network element equipment and other network element devices.Network route, lsp tunnel pass through path calculation method, for instance can be CSPF algorithm, calculate the pseudo-wire PW link information between master network element device node and other network element devices.According to different network elements device node, master network element equipment, generate the PW interface message of concrete network element device according to the L2VPN resource information of each network element device；Route according to network, lsp tunnel calculates the PW link information between master network element device node and other network element devices.
The L2VPN configuration order of user's input that the embodiment of the present invention provides is the business configuration order after simplifying, and the PW link information calculated according to path calculation method is PW link information more complicated in correlation technique, without the business configuration order simplified and the pseudo-wire PW link of described master network element equipment and other network element devices.
Table 2, the method setting up PW link that the present embodiment provides, the L2VPN configuration order of user's input after simplifying is converted to business configuration order before simplification by shown, the i.e. PW link information of the pseudo-wire PW link of master network element equipment and other network element devices, and described PW link information is handed down to each network element device.
The L2VPN business configuration order of user totally 4 after simplification；
The first step: need type of service and title network element device more to need to create identical type of service and title on each equipment.
Second step: judge whether each network element device exists, whether each network element device port exists, and exists, and carries out port binding below business corresponding to each network element device, corresponding simplify before be exactly port binding；
3rd step: calculate according to master network element equipment and other network element devices and generate pw interface, if resource consumption, then prompting can not continue to create；
4th step: the pw interface calculated is calculated respective link information, generates call parameter peer, virtual link mark vcid, label label parameter, as there is lsp tunnel binding, it is necessary to binding associated tunnel information；And the priority according to shortest-path first algorithm CSPF algorithm each link, draw the active and standby pw on master network element equipment；
5th step: each business configuration is comprehensively formed, such as the configuration before simplifying.
After the simplification that the present embodiment provides, the L2VPN business configuration order of user includes: who is master network element equipment and the access point of each network element device, effectively simplifies numerous and diverse business configuration order.
Service configuration information before and after concrete simplification is with reference to such as table 2 below.
Step S208: issue described PW link information extremely described each network element device.
The PW link information calculated is issued to each network element device, it is possible to be issued to each network element node by NETCONFIG agreement.Each network element device receives described PW link information, described PW link information is tied to described lsp tunnel, can set up PW link.PW link information can include the PW link informations such as the PW interface message of each network element device, label, Qos, detection, protection group configuration.
nullThe method that the embodiment of the present invention provides，Adopt and obtain the L2VPN resource information of each network element device in networking、The route topological relation of each network element device、The L2VPN business configuration order of user's input after the simplification that lsp tunnel information between each network element device and the embodiment of the present invention provide，PW link information is calculated by path computation algorithm，Described PW link information is issued to each network element device in networking，Efficiently solve in correlation technique，Networking configures between each network element device PW link，Need human configuration and input substantial amounts of parameter and business configuration order，The problem that operator is constituted unprecedented the operation pressure，Achieve and can set up PW link by inputting simple business configuration order，It is capable of quickly adding business，The result simultaneously configured also is well positioned to meet user's requirement，Efficiently reduce the operation cost of operator.
The embodiment provides the method that another kind sets up PW link.Fig. 3 is the flow chart that another kind according to embodiments of the present invention sets up the method for PW link.As shown in Figure 3, the method is referred to the step shown in Fig. 2, in order to the mistake that the L2VPN business configuration order solving user's input is likely to occur, adding a step S300 in a preferred embodiment of the present embodiment between the step S206 shown in Fig. 2 and step S208, namely whether the L2VPN business configuration order of detection user input is correct.
As it is shown on figure 3, step S300, S302, S304, S310 respectively with reference to the step S200 shown in Fig. 2, S202, S204, S206, can not repeat them here.
Step S300: whether the L2VPN business configuration order of detection user's input is correct；
The L2VPN business configuration order of the user's input got, it is possible to mistake.The problems such as the L2VPN resource information such as inputting non-existent network element device, mistake.If do not detected, the PW link information calculated is problematic as, and cannot calculate PW link information even at all.
If the L2VPN business configuration order of detection user's input is correct, then perform next step S310.
If the L2VPN business configuration order of detection user's input is incorrect, then perform step S312, namely report error message and reason, obtain the amended L2VPN business configuration order of user.
Step S312, information and reason that the user detected inputs L2VPN business configuration order mistake report, and show user, and receive the L2VPN business configuration order that user is newly inputted, and as it is shown on figure 3, redirect execution step S306.
By the method that this preferred embodiment provides, it is possible to effectively solve the problem that user inputs L2VPN business configuration order mistake, it is to avoid blindly calculate PW link information, resource and time are saved.
In a preferred embodiment, in order to solve the mistake being likely to occur in issuing the process of the PW link information calculated according to the present invention, after issuing described PW link information extremely described each network element device, the wrong rollback adding configuration processes.Namely when issue process breaks down when, calculate and issue the number of times of failure；Judge to issue the numerical value whether number of times of failure reaches to pre-set；When issuing the number of times of failure not up to the numerical value pre-set, perform the step S208 shown in Fig. 2, be again issued to each network element device described by described PW link information；When issuing the frequency of failure and reaching the numerical value pre-set, terminate issuing described PW link information, reporting fault information.By this preferred implementation, efficiently solve and issue the problem that PW link information breaks down, decrease loaded down with trivial details manual operation.
In a preferred embodiment, the method setting up PW link that the embodiment of the present invention provides can also include: whether the route topological relation of detection network element device changes；When the route topological relation of described network element device changes, obtain the route topological relation of new network element device；Recalculate the PW link information of the PW link of master network element equipment and other network element devices.
In a preferred embodiment, the embodiment of the present invention provides the method for vertical PW link to include: detect whether the lsp tunnel annexation of instruction in described lsp tunnel information changes, and/or in described lsp tunnel information, whether the lsp tunnel resource utilization of instruction exceedes predetermined threshold；When described lsp tunnel annexation changes, and/or when described lsp tunnel resource utilization exceedes predetermined threshold, recalculate the PW link information of described PW link.
After issuing PW link information and being successfully established PW link, in running, the situation it is possible that situation about rolling off the production line on each network element device and topological relation change thereof, lsp tunnel change etc., above-mentioned change information can be obtained by agreement, can be such as that the notify receiving NETCONFIG agreement sends state change information, timely respond to.And can according to current topological relation or lsp tunnel information, recalculate generation PW link information, issue new PW link information extremely each network element device, each network element device deletes original PW link information, bind new PW link information, according to circumstances dynamic calculation and adjustment PW link, it is ensured that conversion link and information are correct.
Path can be carried out according to relevant informations such as the Qos of configuration dynamically to adjust, it is ensured that select optimum forward-path, Appropriate application Internet resources simultaneously.Such as: the LSP1 tunnel resource at first of network path PW1 meets forwarding, but business gets more and more, the reduction slowly of business on LSP2, assume the utilization rate of LSP1 bandwidth 90%, LSP2 bandwidth availability ratio is less than 30%, thus can dynamically adjust business PW1 and walk LSP2, it is ensured that resource rational utilization.
In a preferred embodiment, the L2VPN business configuration order of described user input can include at least one of: L2VPN networking type of service, network element device port access port AC point, appointment main/slave link.
In preferred embodiment, when the L2VPN business configuration order obtaining user's input includes specifying main/slave link, the PW link information calculating the PW link of master network element equipment and other network element devices may include that the PW link information of the active and standby PW link calculating master network element equipment and other network element devices.When acquiescence exists main/slave link and/or user specifies main/slave link, the present invention can calculate the link information of active and standby PW.
In a preferred embodiment, the PW link information of the active and standby PW link calculating master network element equipment and other network element devices may include that the PW link information calculating active and standby PW link according to the constraints pre-set.
In preferred embodiment, constraints can include at least one of: routing metric, RSVP, user's assigned priority.When calculating the link information of active and standby PW, it is possible to according to the demand that user is different, different constraints is set, to meet the daily operation needs of user.
In preferred embodiment, the PW link information of the PW link calculating master network element equipment and other network element devices includes: adopt CSPF algorithm to calculate the PW link information of master network element equipment and the PW link of other network element devices.In correlation technique, path computation algorithm has a lot, and the preferred embodiment of the present invention can adopt CSPF routing algorithm.
Fig. 4 is the structural representation of a kind of device for setting up PW link according to embodiments of the present invention.As shown in Figure 4, this device can include such as lower module:
First acquisition module 40, is connected to the first computing module 46, for obtaining L2VPN resource information and the route topological relation of each network element device；Second acquisition module 42, is connected to the first computing module 46, for obtaining the lsp tunnel information between described each network element device；3rd acquisition module 44, is connected to the first computing module 46, for obtaining the L2VPN business configuration order of user's input；First computing module 46, is connected to issue module 48；For according to the L2VPN resource information of described each network element device, route topological relation, lsp tunnel information and described L2VPN business configuration order, calculating the PW link information of the PW link of master network element equipment and other network element devices；Issue module 48, it is used for issuing described PW link information extremely described each network element device.
In a preferred embodiment, the mistake that the L2VPN business configuration order in order to solve user's input is likely to occur, this device can also include:
First detection module, is connected to the first computing module 46, and for issuing described PW link information to before each network element device described described, whether the L2VPN configuration order of detection user's input is correct；4th acquisition module, is connected to the first computing module 46, if the L2VPN configuration order for user's input is incorrect, then reports error message and reason, obtains the amended L2VPN business configuration order of user.By this preferred implementation, it is possible to effectively solve the problem that user inputs L2VPN business configuration order mistake, it is to avoid blindly calculate PW link information, resource and time are saved.
In a preferred embodiment, in order to solve the mistake being likely to occur in issuing the process of the PW link information calculated according to the present invention, issuing module 48 can also include:
Counting unit, during for breaking down in issuing process, calculates the number of times issuing failure；Rollback unit, is connected to counting unit, for when issuing the number of times of failure not up to the numerical value pre-set, described PW link information being issued to each network element device again described；Report unit, be connected to rollback unit, for when issuing the frequency of failure and reaching the numerical value pre-set, terminating issuing described PW link information, reporting fault information.By the device that this preferred embodiment provides, efficiently solve and issue the problem that PW link information breaks down, decrease loaded down with trivial details manual operation.
In a preferred embodiment, except module shown in Fig. 4, this device can also include:
Second detection module, is connected to the second computing module, and whether the route topological relation for detecting network element device changes；5th acquisition module, is connected to the second computing module, for described when the route topological relation of network element device changes, obtain the route topological relation of new network element device；Second computing module, for recalculating the PW link information of the PW link of master network element equipment and other network element devices.
In a preferred embodiment, except module shown in Fig. 4, this device can also include:
3rd detection module, is connected to the second computing module, and for detecting whether the lsp tunnel annexation of instruction in described lsp tunnel information changes, and/or in described lsp tunnel information, whether the lsp tunnel resource utilization of instruction exceedes predetermined threshold；3rd computing module, connects and issues module 48, for changing when described lsp tunnel annexation, and/or when lsp tunnel resource utilization exceedes predetermined threshold, recalculate the PW link information of described PW link.
After issuing PW link information and being successfully established PW link, in running, the situation it is possible that situation about rolling off the production line on each network element device and topological relation change thereof, lsp tunnel change etc., and can according to current topological relation or lsp tunnel information, recalculate generation PW link information, path can be carried out according to relevant informations such as the Qos of configuration dynamically to adjust, it is ensured that select optimum forward-path, Appropriate application Internet resources simultaneously.According to the different situations occurred in running, dynamic calculation and adjust PW link, it is ensured that conversion link and information is correct and PW resource reasonable distribution.
In a preferred embodiment, except module shown in Fig. 4, this device can also include:
4th computing module, connects and issues module 48, for including specifying main/slave link in the L2VPN business configuration order obtaining user's input, calculates the PW link information of the active and standby PW link of master network element equipment and other network element devices.
It should be noted that at this, first, second, third and fourth computing module mentioned in the embodiment above, first, second and third acquisition module, functional similarity or the identical modules such as first, second and third detection module, can be same entity apparatus or same virtual module, it is also possible to be different entity apparatus or different virtual modules.
The device that the embodiment of the present invention provides, takes to obtain the L2VPN resource information of each network element device and route topological relation；Obtain the lsp tunnel information between described each network element device；Obtain the L2VPN business configuration order of user's input；According to the L2VPN resource information of described each network element device, route topological relation, lsp tunnel information and described L2VPN business configuration order, calculate the PW link information of the PW link of master network element equipment and other network element devices；Issue described PW link information extremely described each network element device.Efficiently solve in correlation technique, networking configures between each network element device PW link, need human configuration and input substantial amounts of parameter and business configuration order, the problem that operator is constituted unprecedented the operation pressure, achieve and can set up PW link by inputting simple business configuration order, being capable of quickly adding business, the result simultaneously configured also is well positioned to meet user's requirement, effectively the operation cost of Shao Liao operator.
In conjunction with a preferred embodiment, the present invention will be described below.
Fig. 5 is the structural representation of a kind of according to the preferred embodiment of the invention device for setting up PW link.This preferred embodiment provides a kind of device quickly setting up PW link, and this device can include following functions module:
Network topology module 50, is connected to L2VPN Configuration Manager 58, and for realizing the function of above-mentioned first acquisition module 40, primary responsibility obtains the network topology of network element device, is used for calculating PW link information；
Lsp tunnel management module 52, is connected to L2VPN Configuration Manager 58, and for realizing the function of above-mentioned second acquisition module 42, primary responsibility is used for creating and managing lsp tunnel, is used for calculating PW link information；
Network resource managing module 54, it is connected to L2VPN Configuration Manager 58, the main L2VPN resource information managing each network element device node device, is used for calculating PW link information, for assisting to realize the function of above-mentioned first acquisition module the 40, second acquisition module 42；
Configuration host-host protocol module 56, is connected to L2VPN Configuration Manager 58, is used for communicating, for assisting to realize the function of above-mentioned first acquisition module the 40, second acquisition module 42.Such as obtaining the network topology of network element device, the L2VPN resource information of network element device node device；It is additionally operable to obtain and the PW link information of generation is issued to each network element device node.(note: this agreement can be NETCONF standard agreement, telnet agreement or other can transmit any agreement of configuration data)；
L2VPN Configuration Manager 58, for realizing above-mentioned 3rd acquisition module 44, the four the first computing modules 46, second computing module, issue module 48, acquisition module, first detection module, second detection module, 5th acquisition module, second computing module, 3rd detection module, the function of the 4th computing module and the 4th computing module, the L2VPN business configuration order that primary responsibility inputs according to user, in conjunction with network topology, lsp tunnel, the L2VPN resource information of network element device, calculate PW link information, and convert the generation of business order on concrete equipment to, by configuring each network element device that host-host protocol module is sent in network.
Fig. 6 is the network element device group figure of the embodiment of the present invention, figure can have between A1 and A2, A2 and A3, A3 and A4, A4 and A1 multiple identical router device, here simplify to describe and just do not show other routing devices, L2VPN Configuration Manager can be embedded into the operational control process unit in any one router device, also it is the managing process of independent other isolated operation outside router, is conveniently presented as an independent management module outside in the drawings herein for describing.The method of the present invention is applied to quickly set up PW link, it is possible to comprise the steps:
Step 1, as shown in Figure 6, Fig. 6 is a kind of according to the preferred embodiment of the invention network element device networking schematic diagram for setting up PW link；Device power, builds physical network, and mutually direct-connected between network element device, this stage is mainly the configuration of basic network construction work, and the initialization of network element device powers on, now but without any relation between L2VPN Configuration Manager and network；
Step 2, as it is shown in fig. 7, Fig. 7 is the business configuration passage NETCONFIG schematic diagram between a kind of according to the preferred embodiment of the invention networking equipment for setting up PW link；Network element device configuration network routing protocol, network topology generates, and route forwarding table is formed, and basic routing forwarding is got through.L2VPN Configuration Manager by and certain A network element device of being directly connected to connect after communicated by agreement, passing through A network element device transfer with other network element devices is also that directly foundation communicates after connecting, namely now L2VPN manages module by being connected with wherein any one network element device, and by (distinguishing band external schema: all of equipment has independent physical cord to directly link) in being with, mode communicates with other routing network element devices.
Supposition and A1 router in the present embodiment are directly connected to.L2VPN Configuration Manager obtains the route topological relation between the L2VPN resource information of each network element device, current each network element device by SNMP or NETCONFIG agreement (the main NETCONFIG protocol mode that the present invention is described below uses SSH agreement obtain and issue configuration information).And when changing when route topological, it is also possible to notify L2VPN Configuration Manager by the notify function of NETCONFIG agreement.The L2VPN resource information of network element device, it is possible to be that such as network element device supports maximum business configuration amount, the label range of distribution of PW business, the business PW interface resource quantity that network element device can distribute, accessible port type etc.
Step 3, as shown in Figure 8, the network tunnel that Fig. 8 is a kind of according to the preferred embodiment of the invention networking equipment for setting up PW link forwards generation schematic diagram；Between each network element device, set up lsp tunnel, be tunnel configuration management aspect here, it is possible to by tunnel management module creation, it is possible to be that dynamic protocol generates or directly configuration static state tunnel；Being exactly to form forwarding tunnel between any two network element device, configuration and the formation in tunnel are mainly responsible for by tunnel management module, the mainly node end to end in tunnel, directivity etc..Tunnel is externally made an announcement by the notify function of NETCONFIG agreement after generating, and L2VPN Configuration Manager response change notifies, records the lsp tunnel information of each network element device node.L2VPN Configuration Manager is externally notified when tunnel management module has any change to can be transferred through NETCONFIG agreement；
Step 4, the L2VPN business configuration order of user's input can carry out business datum either directly through L2VPN Configuration Manager and issue configuration (as shown in table 2, user needs the configuration after issuing simplification), L2VPN business configuration order in user's input can include content: such as type of service (such as VPWS, VPLS), network element device belonging to access interface AC point, as AC1 belongs to A1 network element device be master network element, AC2 belongs to A3 network element device, AC3 belongs to A4 network element device.
According to L2VPN resource information and device port resource information on each network element device got, L2VPN Configuration Manager judges that whether PW link traffic is legal, can also pass through L2VPN Configuration Manager and obtain the forwarding status information of business after user configures.As it is shown in figure 9, Fig. 9 is a kind of according to the preferred embodiment of the invention business configuration for setting up PW link issues schematic diagram.User is made directly with the L2VPN Configuration Manager in figure alternately；
Step 5, checks that whether the L2VPN business configuration order of user's input is exact.
The business configuration badcommand of active user's input is mistaken, feedback error information and make mistakes reason, the L2VPN business configuration order of newly received book of laying equal stress on input.
Step 6, the L2VPN business configuration order of L2VPN resource information according to each network element device, lsp tunnel information, the network topology of each network element device and user's input, calculates the PW link information between master network element equipment and other network element devices by CSPF algorithm (or other path calculation methods).
When giving tacit consent to or specifying active and standby PW link; can be calculated by constraintss such as routing metric, RSVP, shortest path, priority; it it is main or standby PW link between certain two network element device; calculate the private network tags of PW simultaneously; protection group relation and be likely to need binding lsp tunnel; because lsp tunnel is likely to but without formation; but now the basic configuration parameter of business has; only business but without can be used in actual flow forward, wait LSP formed rear business update may be used for forward.If there is the information such as Qos, detection in user, it is also desirable to the configuration of user is inputted and converts traditional business configuration to；
Step 7, the PW link information (configuration before converting the configuration after simplification to simplification as shown in table 2) calculated is issued to each network element device by L2VPN Configuration Manager.This step needs L2VPN Configuration Manager to be issued to each network element device node by NETCONFIG agreement, it is necessary to ensure that configuration distributing generates successfully, and the mistake occurred in issuing process needs the wrong rollback carrying out configuring to process, and attempts repeatedly issuing.If when the number of times issuing failure arrives the numerical value pre-set, then stop issuing PW link information, and on report an error specifying information (as unreachable in communicated, time-out etc.)；
Step 8, in networking equipment running, each network element device is by the notify transmission state change information of NETCONFIG agreement to L2VPN Configuration Manager, L2VPN Configuration Manager can in time each network element device node of perception on roll off the production line, the change of network topology, LSP change, and timely respond to.Can again calculating the optimum forward-path link information of generation according to current state, be issued to each network element device, network element device deletes original configuration information, binds new PW link information, it is ensured that forwarding information is correct.
Step 9, carries out path according to relevant informations such as the Qos of configuration and dynamically adjusts, it is ensured that select optimum forward-path, Appropriate application Internet resources.Such as: the LSP1 tunnel resource at first of network path PW1 meets forwarding, but business gets more and more, the reduction slowly of business on LSP2, assume the utilization rate of LSP1 bandwidth 90%, LSP2 bandwidth availability ratio is less than 30%, thus can dynamically adjust business PW1 and walk LSP2, it is ensured that resource rational utilization.
Table 2 contrast simplifies front and back user and inputs L2VPN business configuration order.Before simplifying, user needs the business configuration order of input to comprise following 4；
The first step: need type of service and title network element device more to need to create identical type of service and title on each equipment.
Second step: judge whether each network element device exists, whether each network element device port exists, and exists, and carries out port binding below business corresponding to each network element device, corresponding simplify before be exactly port binding；
3rd step: calculate according to master network element equipment and other network element devices and generate pw interface, if resource consumption, then prompting can not continue to create；
4th step: the pw interface calculated is calculated respective link information, generates call parameter peer, vcid, label parameter, as there is lsp tunnel binding, it is necessary to binding associated tunnel information；And the priority according to CSPF each link, draw the active and standby pw on master network element equipment；
5th step: calculate and generate PW link information, such as the L2VPN business i configuration order before simplifying.And the present embodiment provides the effect that method inputs L2VPN business configuration order simplification user fairly obvious, as shown in table 2 left column:
vpwszte_test
access-pointA1/ac1master
access-pointA3/ac2
access-pointA4/ac3
This preferred embodiment achieves can set up PW link by inputting simple business configuration order, it is capable of quickly interpolation business power, what reduce L2VPN business opens cost, take full advantage of the Internet resources of the network port, improve the utilization rate of each network, existing resource obtains maximum value.
In sum, by the above embodiment of the present invention, preferred embodiment and embodiment, the method quickly setting up PW link provided and device, solve in correlation technique, networking configures between each network element device PW link, need human configuration and input substantial amounts of parameter and business configuration order, the problem that operator is constituted unprecedented the operation pressure, carry out the dynamic adjustment of forward-path according to CSPF algorithm simultaneously, ensure that the quality of service can fully forward by profit Internet resources simultaneously, improve the utilization rate of resource.
Obviously, the foregoing is only the preferred embodiments of the present invention, be not limited to the present invention.Those skilled in the art should be understood that, each module of the above-mentioned present invention or each step can realize with general calculation element, they can concentrate on single calculation element, or it is distributed on the network that multiple calculation element forms, alternatively, they can realize with the executable program code of calculation element, thus, can be stored in storage device is performed by calculation element, or they are fabricated to respectively each integrated circuit modules, or the multiple modules in them or step are fabricated to single integrated circuit module realize.So, the present invention is not restricted to the combination of any specific hardware and software.All within the spirit and principles in the present invention, any amendment of making, equivalent replacement, improvement etc., should be included within protection scope of the present invention.
Claims (16)
1. the method setting up pseudo-wire PW link, it is characterised in that including:
Obtain Layer 2 virtual private network L2VPN resource information and the route topological relation of each network element device；
Obtain the label distribution protocol lsp tunnel information between described each network element device；
Obtain the L2VPN business configuration order of user's input；
According to the L2VPN resource information of described each network element device, route topological relation, lsp tunnel information and described L2VPN business configuration order, calculate the PW link information of the PW link of master network element equipment and other network element devices；
Issue described PW link information extremely described each network element device.
2. method according to claim 1, it is characterised in that issuing described PW link information to before each network element device described, the method also includes:
Whether the L2VPN business configuration order of detection user's input is correct；
If it is not, then report error message and reason, obtain the amended L2VPN business configuration order of user.
3. method according to claim 1, it is characterised in that described each network element device described that is issued to by described PW link information includes:
When breaking down in issuing process, calculate the number of times issuing failure；
When issuing the number of times of failure not up to the numerical value pre-set, described PW link information is issued to again each network element device described；
When issuing the frequency of failure and reaching the numerical value pre-set, terminate issuing described PW link information, reporting fault information.
4. method according to claim 1, it is characterised in that the method also includes:
Whether the route topological relation of detection network element device changes；
When the route topological relation of described network element device changes, obtain the route topological relation of new network element device；
Recalculate the PW link information of the PW link of master network element equipment and other network element devices.
5. method according to claim 1, it is characterised in that the method also includes:
Detect whether the lsp tunnel annexation of instruction in described lsp tunnel information changes, and/or in described lsp tunnel information, whether the lsp tunnel resource utilization of instruction exceedes predetermined threshold；
When described lsp tunnel annexation changes, and/or when described lsp tunnel resource utilization exceedes predetermined threshold, recalculate the PW link information of described PW link.
6. method according to claim 1, it is characterised in that the L2VPN business configuration order of described user input includes at least one of:
L2VPN networking type of service, network element device port access port AC point, appointment main/slave link.
7. method according to claim 6, it is characterised in that when the L2VPN business configuration order obtaining user's input includes specifying main/slave link, the PW link information of the PW link calculating master network element equipment and other network element devices also includes:
Calculate the PW link information of the active and standby PW link of master network element equipment and other network element devices.
8. method according to claim 7, it is characterised in that the PW link information of the active and standby PW link of described calculating master network element equipment and other network element devices includes:
The PW link information of active and standby PW link is calculated according to the constraints pre-set.
9. method according to claim 8, it is characterised in that described constraints includes at least one of:
Routing metric, RSVP, user's assigned priority.
10. the method according to any one of claim 1-9, it is characterised in that the PW link information of the PW link of described calculating master network element equipment and other network element devices includes:
CSPF algorithm is adopted to calculate the PW link information of master network element equipment and the PW link of other network element devices.
11. one kind for setting up the device of PW link, it is characterised in that including:
First acquisition module, for obtaining Layer 2 virtual private network L2VPN resource information and the route topological relation of each network element device；
Second acquisition module, for obtaining the label distribution protocol lsp tunnel information between described each network element device；
3rd acquisition module, for obtaining the L2VPN business configuration order of user's input；
First computing module, for according to the L2VPN resource information of described each network element device, route topological relation, lsp tunnel information and described L2VPN business configuration order, calculating the PW link information of the PW link of master network element equipment and other network element devices；
Issue module, be used for issuing described PW link information extremely described each network element device.
12. device according to claim 11, it is characterised in that this device also includes:
First detection module, for issuing described PW link information to before each network element device described described, whether the L2VPN configuration order of detection user's input is correct；
4th acquisition module, for if it is not, then report error message and reason, obtaining the amended L2VPN business configuration order of user.
13. device according to claim 11, it is characterised in that described in issue module and include:
Counting unit, during for breaking down in issuing process, calculates the number of times issuing failure；
Rollback unit, for when issuing the number of times of failure not up to the numerical value pre-set, being again issued to each network element device described by described PW link information；
Report unit, for when issuing the frequency of failure and reaching the numerical value pre-set, terminating issuing described PW link information, reporting fault information.
14. device according to claim 11, it is characterised in that this device also includes:
Second detection module, whether the route topological relation for detecting network element device changes；
5th acquisition module, for described when the route topological relation of network element device changes, obtains the route topological relation of new network element device；
Second computing module, for recalculating the PW link information of the PW link of master network element equipment and other network element devices.
15. method according to claim 11, it is characterised in that this device also includes:
3rd detection module, for detecting whether the lsp tunnel annexation of instruction in described lsp tunnel information changes, and/or in described lsp tunnel information, whether the lsp tunnel resource utilization of instruction exceedes predetermined threshold；
3rd computing module, for changing when described lsp tunnel annexation, and/or when lsp tunnel resource utilization exceedes predetermined threshold, recalculates the PW link information of described PW link.
16. device according to claim 11, it is characterised in that this device also includes:
4th computing module, for including specifying main/slave link in the L2VPN business configuration order obtaining user's input, calculates the PW link information of the active and standby PW link of master network element equipment and other network element devices.
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| CN201410828985.7A CN105791074A (en) | 2014-12-25 | 2014-12-25 | Method and device for establishing PW (Pseudo Wire) links |
| PCT/CN2015/076583 WO2016101444A1 (en) | 2014-12-25 | 2015-04-14 | Method and device for establishing pw link |
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| CN201410828985.7A CN105791074A (en) | 2014-12-25 | 2014-12-25 | Method and device for establishing PW (Pseudo Wire) links |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107872338A (en) * | 2016-09-26 | 2018-04-03 | 中兴通讯股份有限公司 | NMS, business configuration, business configuration requesting method and device |
| CN107959612A (en) * | 2016-10-18 | 2018-04-24 | 中兴通讯股份有限公司 | A kind of method and device that adaptively adjusts of service tunnel under network transition |
| CN107995015A (en) * | 2016-10-27 | 2018-05-04 | 中兴通讯股份有限公司 | The method and apparatus for obtaining the end-to-end detection paths of TWAMP |
| CN110087252A (en) * | 2019-05-30 | 2019-08-02 | 深圳市中航比特通讯技术有限公司 | A kind of communication network service dynamic change technology |
| CN110661666A (en) * | 2019-09-29 | 2020-01-07 | 中国联合网络通信集团有限公司 | Method and device for establishing ring network resources of packet transport network |
| CN112532515A (en) * | 2020-12-21 | 2021-03-19 | 安徽皖通邮电股份有限公司 | E1-based service line switching method |
| WO2023071725A1 (en) * | 2021-10-29 | 2023-05-04 | 华为技术有限公司 | Network configuration feature extraction method and related device |
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| CN110351188B (en) * | 2019-07-05 | 2021-11-16 | 迈普通信技术股份有限公司 | Message forwarding method, data processing method, device and network system |
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| US7715310B1 (en) * | 2004-05-28 | 2010-05-11 | Cisco Technology, Inc. | L2VPN redundancy with ethernet access domain |
| CN101159668B (en) * | 2007-10-23 | 2010-06-02 | 中兴通讯股份有限公司 | Pseudo-lines and packet switching conveyor network based establishment method |
| CN101505227B (en) * | 2009-03-11 | 2012-06-27 | 华为技术有限公司 | Method, device and system for implementing point to multi-point pseudowire |
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2014
- 2014-12-25 CN CN201410828985.7A patent/CN105791074A/en active Pending
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| CN107872338A (en) * | 2016-09-26 | 2018-04-03 | 中兴通讯股份有限公司 | NMS, business configuration, business configuration requesting method and device |
| CN107959612A (en) * | 2016-10-18 | 2018-04-24 | 中兴通讯股份有限公司 | A kind of method and device that adaptively adjusts of service tunnel under network transition |
| CN107995015A (en) * | 2016-10-27 | 2018-05-04 | 中兴通讯股份有限公司 | The method and apparatus for obtaining the end-to-end detection paths of TWAMP |
| CN107995015B (en) * | 2016-10-27 | 2021-11-12 | 中兴通讯股份有限公司 | Method and device for acquiring TWAMP end-to-end detection path |
| CN110087252A (en) * | 2019-05-30 | 2019-08-02 | 深圳市中航比特通讯技术有限公司 | A kind of communication network service dynamic change technology |
| CN110661666A (en) * | 2019-09-29 | 2020-01-07 | 中国联合网络通信集团有限公司 | Method and device for establishing ring network resources of packet transport network |
| CN110661666B (en) * | 2019-09-29 | 2022-02-18 | 中国联合网络通信集团有限公司 | Method and device for establishing ring network resources of packet transport network |
| CN112532515A (en) * | 2020-12-21 | 2021-03-19 | 安徽皖通邮电股份有限公司 | E1-based service line switching method |
| WO2023071725A1 (en) * | 2021-10-29 | 2023-05-04 | 华为技术有限公司 | Network configuration feature extraction method and related device |
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| Publication number | Publication date |
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| WO2016101444A1 (en) | 2016-06-30 |
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