CN108282708A - Multi-operator ODN shares and isomery PON Explore of Unified Management Ideas - Google Patents
Multi-operator ODN shares and isomery PON Explore of Unified Management Ideas Download PDFInfo
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- CN108282708A CN108282708A CN201810096651.3A CN201810096651A CN108282708A CN 108282708 A CN108282708 A CN 108282708A CN 201810096651 A CN201810096651 A CN 201810096651A CN 108282708 A CN108282708 A CN 108282708A
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- H—ELECTRICITY
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- H—ELECTRICITY
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- H04Q11/0062—Network aspects
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Abstract
The invention discloses a kind of multi-operator ODN is shared and isomery PON Explore of Unified Management Ideas, one, soft to define virtual passive optical network total system frame, open control interface is provided in PON access nets, realize programmable, intelligent control platform, it is multiple slices by the virtual flexible partition of resource, each Operator Specific Service respectively independently forwards in each comfortable virtual resource channel；Two, each component part of virtual passive optical network；Three, virtual passive optical network configuration work mechanism；Four, it shares PON equipment and increases telecom operators' software definition mark；Five, multi-operator shares active configuration mechanism；Six, data forwarding mechanism；Seven, the management of system；Eight, Chi Zuhua；Nine, virtual network topology；Ten, QoS is realized；11, safety guarantee and the realization of transition coexists；12, power-saving mechanism is realized；13, with upper layer network coordinated management.The method have the advantages that realizing the open-minded with no difference of service layer, residence network construction cost is reduced.
Description
Technical field
The present invention relates to technical field of communication network, is shared more particularly, to multi-operator ODN and isomery PON is managed collectively
Method.
Background technology
PON（Passive Optical Network, passive optical network）System is made of OLT, ONU and ODN.Wherein,
OLT（Optical Line Terminal, optical line terminal）Positioned at local side, it is the core component of entire PON system, carries upwards
For accessing the high-speed interface of net and core net/Metropolitan Area Network (MAN), the PON for providing the point to multi--point towards passive optical-fiber network downwards connects
Mouthful, with broadcast mode to each ONU（Optical Network Unit, optical network unit）Transmission data.ODN（Optical
Distribution Network, fiber distribution net）It is by POS（Passive Optical Splitter, passive fiber branch
Device）The fiber distribution network of composition so that the fiber bandwidth of a PON interface can be shared by multiple ONU.ONU is located at
User terminal realizes the multiple services accesses such as data, speech.
The relevant technical standards of PON at this stage, when using IEEE as the EPON of representative, 10G EPON standards camp, second is that
Using ITU/FSAN/BBF as GPON, XG PON1 of representative and NG PON2 standards camp.Realize the basic class of technical thought of light splitting
Seemingly, it is sent by the downlink data of OLT to ONU and uses TDM broadcast modes, as shown in Figure 1, and making ONU can only using encryption technology
It obtains and itself relevant data message；Upstream data uses TDMA modes, as shown in Fig. 2, with multiparty control technology MPCP
The data upload from ONU to OLT is dispatched with Dynamic Bandwidth Allocation DBA technologies.
With fiber to the home（FTTH）The development of construction, as shown in figure 3, each operator falls over each other to enter into cell progress optical fiber
Family is built.However, constructing and implementing for fiber broadband access needs each operator to dispose a large amount of optical network in cell residence network
Network resource needs a large amount of fund input, and the construction mode that each operator fights separately then results in a large amount of state-owned fund
The problems such as overlapping investment wastes, and resource utilization is too low and excessive occupancy guard station resource.Meanwhile as shown in figure 4, telecommunication service passes through
When distributing cabinet or distribution cabinet is respectively set in battalion person and dwelling construction side, it is each responsible for the construction of babinet or cabinet, exchange side
Wiring module is then responsible for construction by telecommunication service operator, and the Wiring module of user side is responsible for construction by dwelling construction side.
Therefore, the deficiency present in above-mentioned present situation is：
1, it when user activates the service, is required for carrying out jumper connection optical fiber between operator and common light distributing cabinet every time, implement multiple
It is miscellaneous, it is easy error；Meanwhile continually in user access point jumper connection optical fiber, there are serious insecurity, poor reliability.
2, resource distribution is dumb, especially initial stage carrier side build optical cable, the scale of resources such as optical wiring facility and
Specification is difficult to estimate, and is susceptible to repeated construction or waste, and resource utilization is low.
3, the complex management of network lacks flexibility, and fault location is difficult, and maintenance efficiency is low.
4, a variety of PON technologies are applied simultaneously in a network, lack flexible heterogeneous network Resource Scheduling Mechanism；Current light connects
Networking includes the technologies such as EPON, GPON, 10G EPON, 10G GPON, WDM-PON, P2P-PON, cannot be simultaneous between heterogeneous networks
Hold, Internet resources mechanism of control is mutual indepedent, lacks flexible heterogeneous network source scheduling mechanism, the management and granting of business can only
It is operated on respective network management platform, it is less efficient.
Invention content
Present invention aims at providing, a kind of multi-operator ODN is shared and isomery PON Explore of Unified Management Ideas.
To achieve the above object, the present invention takes following technical proposals：
Multi-operator ODN of the present invention shares and isomery PON Explore of Unified Management Ideas, it is characterised in that：Include the following steps：
The first step, the soft virtual passive optical network total system frame of definition
Open network operating system and Unified Control Plane are set, and the isolated PON frameworks of various standards closing are changed into can
Programming, intelligence controllableization, the open architecture for supporting third-party application provide open control in PON access nets
Interface, the programmable intelligent control platform of realization, while using virtualization apparatus by the virtual flexible partition of resource for multiple slices,
Respectively independent forwarding in each comfortable virtual resource channel of each Operator Specific Service；
Second step, each component part of virtual passive optical network
（1）, the soft OLT and ONU for defining virtual passive optical network on the basis of existing PON system framework, it is soft to increase setting
The forwarding table and state table of part system；
（2）, the forwarding table be made of multiple forwarding-table items, PON system determines by searching for the list item of forwarding table to receiving
Data flow take suitable instruction；
（3）, in virtual passive optical network framework, between control plane and PON Forwarding plane is virtualization apparatus, described
Virtualization apparatus plays the role of hardware resource abstract in entire framework；The virtualization of PON network equipment physical resource is arrived
In controller, and resource impact library is formed, resource point is arranged thus according to the scheduling strategy and service priority pre-established
Match, network operator realizes the centralized control of soft definition in virtual passive optical network framework；
Physical resource is divided into multiple logical resources by virtualization apparatus, each logical resource has different address rules
And forwarding mechanism, and identical physical equipment can be shared；The virtualization apparatus is placed in the software systems of OLT, or is placed in control
In device software systems processed；
The OLT and ONU of all kinds of PON systems are virtualized by difference the case where respective physical resource, are realized multiple isomery PON
It is managed as a system equipment；
（4）, the main equipment of the OLT as forwarded plane, data packet repeating process leads to by the hardware-switch data of OLT
Road complete, component part of the controller as control plane, be responsible for data forwarding control, to realize data forwarding with
The separation of data forwarding control；Controller controls the forwarding table in OLT by transfer control protocol, to reach control data
The purpose of forwarding；
（5）, control plane controller have multiple formation ponds group structure, but same time Forwarding plane OLT is only by an institute
The control of controller is stated, if current controller breaks down, the control to OLT is taken over by spare controller；
（6）, transfer control protocol performed by controller and OLT interactions software be unified and standard software interface, the control
Device processed controls a variety of isomery PON OLT devices；
（7）, controller uniform operating system software the main body of Open Control framework, the controller are provided for upper layer application
Unified development interface is provided for upper layer application and is interacted with bottom hardware by open hardware control interface, can be compiled with realizing
Journeyization controls and management；
Third step, virtual passive optical network configuration work mechanism
（1）, OLT initial configuration mechanism
One OLT opens the specific information channel between control plane after the link tune for completing physical hardware layer is logical, should
Specific information channel carries out information exchange for the OLT Forwarding plane and the control plane, and by the channel, OLT will be certainly
The initial physical resource Information of body is all reported to control plane, and obtains initial configuration information from control layer；Interactive information is adopted
It with cipher mode, is set automatically by artificial or system, the OLT configuration informations newly initialized is added to pond group
OLT is used in pond；
（2）, OLT other mechanism with control plane
The specific information channel obtains the state of PON physical resources for usually controller, by the status information of Forwarding plane
Update the controller, while the interaction for managing the Forwarding plane and associated statistical information；Interactive information is mainly divided
Several classes below, each type have multiple subtypes：
1), controller is to OLT device information：Initiated by controller and be directly used in the state of detection PON physical resources；
2), asynchronous information：The network event of controller is initiated and be used to update by OLT device and changes the state of physical resource；
3), synchronizing information：It is initiated by controller or OLT in the case of no request, for establishing connection；
（2）, ONU configuration mechanism
The ONU newly to network is logical by the specific information upward OLT after completing to lead to the link tune of OLT physical hardware layers
Itself initial physical resource Information is all reported to control plane, and is obtained just from control layer by road
4th step, shared PON equipment increase telecom operators' software definition mark
（1）, when multi-operator shares virtual passive optical network, in the communication protocol stack between OLT and ONU increase extension
Byte, for identifying telecom operators；Whether the extended byte enables the PON system webmaster setting by guard station operator；
（2）, the pre-set first line of a couplet port set by being linked to each telecom operators in OLT device；
（3）, all ONU be respectively provided with load telecom operators mark, the operation trade mark of the ONU is inputted when user activates the service
Know；
（4）, starting extension telecom operators mark PON system in, according to telecom operators mark and service identification, will
The PON system is defined as multiple virtual flogic systems, the flogic system money according to set telecom operators' quantity
The size of source configuration is distributed automatically with each telecom operators ownership quantity and per how much decisions of number of services, real
Adjustment is applied, the parts intermediate ODN are then all shared；
5th step, multi-operator share active configuration mechanism
（1）, control plane is numbered according to ONU physical hardwares and operator identifier, generate soft definition mark in each flogic system
Know, and generates relevant mapping table；
（2）, the control plane PON system hardware resource situation is reported to the network management system of each operator in real time；
（3）, each operator monitor, manage, configuring the virtual resource of oneself；
6th step, data forwarding mechanism
（1）, each operator forwarding strategy is sent to by control plane by webmaster or operation system；Telecom operators itself
Network management system or operation system configure the forwarding strategy of corresponding soft definition mark, and corresponding strategies are in addition to ONU according to each
Class packet header domain includes to be matched；
（2）, the control plane according to the forwarding strategy of each operator, match soft definition of the ONU in each flogic system
Mark, the first line of a couplet port-mark of each operator and logical resource situation, form initial forwarding table, and it is flat to issue OLT forwardings
Face；
（3）, the main equipment of the OLT as forwarded plane, data packet repeating process leads to by the hardware-switch data of OLT
Road is completed, component part of the controller as control plane, is responsible for the control of data forwarding, to realize data forwarding and data
Forward the separation of control；
（4）, after OLT receives data packet, the matching entry of message is searched first in the forwarding table of local software, if there is
Match, then forwards with directly carrying out data, data packet is otherwise transmitted to the controller or discarding, by controller according to presetting
Unified matching strategy, determine forwarding port, increase the new list item of forwarding table, and OLT will be issued；
The management of 7th step, system
（1）, control plane have highest extent of competence, management and monitoring PON system in all OLT and ONU hardware and software
Change the resource of definition, and manages mapping table；
（2）, the control plane resource information of soft definition is sent to the network management systems of each telecom operators, i.e. telecom operation
The network management system of quotient can only receive and itself relevant soft definition resource information；
The realization of 8th step, Chi Zuhua
（1）, carry out unified software implementation by two or more OLT and define, form the pond group PON system of the soft definition of bigger,
Extend capacity；
（2）, the link circuit resource of the different OLT physical systems is scheduled or backuped each other as same system, realize and pacify
Full redundancy function；
9th step, virtual network topology
Manager creates virtual network topology by controller, and multiple virtual LAN are established while not changing physical network
LAN or virtual MAN WAN；
Tenth step, QoS are realized
Configured based on forwarding table using the whole QoS of virtual passive optical network, realize link establishment end to end, safeguard and
It removes；It is identified by the ONU finishing services of virtual passive optical network, further carries out Hierarchical QoS configuration, realized
Diffserv priority mappings and priority scheduling function reach bandwidth control, traffic shaping and the queue scheduling of different business
QOS functions；It is achieved in and the bandwidth of each website, each Business Stream is finely controlled, reach and ensure teleservice QoS
Purpose；
11st step, safety guarantee and the realization that transition coexists
After PON equipment is by virtualization, the link circuit resource of different OLT physical systems is scheduled as same system or each other
Safety Redundancy function is realized in backup；
12nd step, power-saving mechanism are realized
Control layer is according to the distribution according to need of the live load of each virtual resource of forwarding, dynamic dispatching resource；
13rd step and upper layer network coordinated management
The seamless fusion of access net and Metropolitan Area Network (MAN), backbone network is got up, forms unified the whole network mechanism of control end to end, directly
Establish forward-path end to end.
The PON include gigabit passive optical network GPON, passive optical network EPON, the 10G EPON based on Ethernet,
Next NGPON and WDM PON；Next NGPON is 10G GPON and later release.
The present invention passes through in traditional PON（Passive optical network）Increase open network operating system and system in system architecture
One control plane, and one to more than one pond group compounds reason OLT apparatus logics are divided into multiple virtual fragment equipment, by virtual fragment
Equipment is used for carrying the business of separate multi-operator.So that an OLT network element or the OLT flexible access of the ponds Duo Tai group
It to multiple operators, realizes in one group of PON access net system, contains optical line terminal（OLT）, fiber distribution net（ODN）, to multiple
Operator is shared, i.e.,：A set of PON Optical Access Networks system can easily access the user of multiple operators, while user
Operator can be freely selected；And each operator can easily configure the resource of oneself, easily manage the user of oneself.
Simultaneously a variety of isomery PON technical protocols are not needed with complicated protocol conversion, realizes the open-minded with no difference of service layer, is reduced
The maintenance cost of residence network construction cost and network management, while residence network resource can be made to carry out significantly more efficient management,
Improve network management efficiency.
Description of the drawings
Fig. 1 is that the existing downlink data by OLT to ONU of the present invention sends structural schematic diagram.
Fig. 2 is that the existing data by ONU to OLT of the present invention upload structural schematic diagram.
Fig. 3 is the fiber optic network structural schematic diagram that existing each operator of the present invention disposes in cell residence network.
Fig. 4 is that distributing cabinet or distribution cabinet is respectively set in existing telecommunication service operator of the present invention and dwelling construction side
Fiber optic network arrangement schematic diagram.
Fig. 5 is the structure diagram of virtual passive optical network of the present invention.
Fig. 6 is the software interface block diagram that controller of the present invention executes transfer control protocol with OLT.
Fig. 7 is the processing procedure block diagram that controller of the present invention controls forwarding table in OLT by transfer control protocol.
Fig. 8 is the matching process flow diagram that OLT of the present invention searches message.
Fig. 9 is of the present invention is scheduled different OLT physical systems link circuit resources as same system or standby each other
The system structure diagram of part.
Figure 10 be PON equipment of the present invention by virtualization after, using different OLT physical systems link circuit resources as same
System is scheduled or mutually redundant system structure diagram.
Figure 11 is realization of the present invention QoS guarantee mechanism system structure diagram end to end.
Specific implementation mode
It elaborates below in conjunction with the accompanying drawings to the embodiment of the present invention, the present embodiment before being with technical solution of the present invention
It puts and is implemented, give detailed embodiment and specific operating process, but protection scope of the present invention is not limited to down
State embodiment.
Multi-operator ODN of the present invention shares and isomery PON Explore of Unified Management Ideas, carries out as steps described below：
The first step, the soft virtual passive optical network total system frame of definition
As shown in figure 5, network operating system and Unified Control Plane that setting is open, by the PON framves that the closing of various standards is isolated
Allosteric transformation is programmable, intelligence controllableization, the open architecture for supporting third-party application, i.e., provides and open in PON access nets
The control interface of formula is put, realizes programmable intelligent control platform, while using virtualization apparatus by the virtual flexible partition of resource
For multiple slices, each Operator Specific Service respectively independently forwards in each comfortable virtual resource channel；The various standard closings are isolated
PON, physical resource all by the virtualization apparatus of level of abstraction, therefore while configuring QoS do not have to take into account its physical link be
On the upper GPON of EPON or on 10G EPON or on WDM PON, it can all be configured by controller according to unified strategy
Forwarding-table item forwards data.
Second step, each component part of virtual passive optical network
（1）, the soft OLT and ONU for defining virtual passive optical network on the basis of existing PON system framework, it is soft to increase setting
The forwarding table and state table of part system；
（2）, the forwarding table be made of multiple forwarding-table items, PON system determines by searching for the list item of forwarding table to receiving
Data flow take suitable instruction；
（3）, in virtual passive optical network framework, between control plane and PON Forwarding plane is virtualization apparatus, described
Virtualization apparatus plays the role of hardware resource abstract in entire framework；The virtualization of PON network equipment physical resource is arrived
In controller, and resource impact library is formed, resource point is arranged thus according to the scheduling strategy and service priority pre-established
Match, network operator realizes the centralized control of soft definition in virtual passive optical network framework；
Physical resource is divided into multiple logical resources by virtualization apparatus, each logical resource has different address rules
And forwarding mechanism, and identical physical equipment can be shared；Such as the virtualization apparatus can be to bandwidth, topological structure, flow, physics
The physical resources such as port carry out cutting and are mapped as the logical resource and mutually isolated virtualized；
The virtualization apparatus is placed in the software systems of OLT, or is placed in controller software system；
The OLT and ONU of all kinds of PON systems are virtualized by difference the case where respective physical resource, are realized multiple isomery PON
It is managed as a system equipment；
（4）, the main equipment of the OLT as forwarded plane, data packet repeating process leads to by the hardware-switch data of OLT
Road complete, component part of the controller as control plane, be responsible for data forwarding control, to realize data forwarding with
The separation of data forwarding control；Controller controls the forwarding table in OLT by transfer control protocol, to reach control data
The purpose of forwarding；
（5）, control plane controller have multiple formation ponds group structure, but same time Forwarding plane OLT is only by an institute
The control of controller is stated, if current controller breaks down, the control to OLT is taken over by spare controller；
（6）, as shown in fig. 6, the software of controller and transfer control protocol performed by OLT interactions is unified and the software of standard connects
Mouthful, the controller controls a variety of isomery PON OLT devices；
（7）, controller uniform operating system software the main body of Open Control framework is provided for upper layer application, be realize can compile
The core of Cheng Gongneng；The controller for upper layer application provide unified development interface and by open hardware control interface with
Bottom hardware interacts, to realize programmable control and management；Software interface be it is open, such as：APP.By programmable soft
Part meets user and customizes demand, such as：The Script Programmings tools such as Software Development Kit (SDK), Python, JAVA Script.
Upper layer application is not limited to routing, multicast, security protection, access control, Bandwidth Management, traffic engineering, QoS, guarantee, handles and deposit
Storage optimization, energy management and various tactical managements etc..
Third step, virtual passive optical network configuration work mechanism
（1）, OLT initial configuration mechanism
One OLT opens the specific information channel between control plane after the link tune for completing physical hardware layer is logical, should
Specific information channel carries out information exchange for the OLT Forwarding plane and the control plane, and by the channel, OLT will be certainly
The initial physical resource Information of body is all reported to control plane, and obtains initial configuration information from control layer；
OLT reports physical resource Information to include and be not limited to following information：OLT shelf numbers, OLT frame numbers, OLT slots number, OLT
PON mouthfuls of slot number, OLT port numbers etc..Interactive information uses cipher mode, for example, by using SSL (Secure Sockets Layer
Secure Socket Layer) etc. security protocols.It is set automatically by artificial or system, the OLT configuration informations newly initialized is added to one
It is used in the ponds OLT of a pond group；
（2）, OLT other mechanism with control plane
The specific information channel obtains the state of PON physical resources for usually controller, by the status information of Forwarding plane
Update the controller, while the interaction for managing the Forwarding plane and associated statistical information；Interactive information is mainly divided
Several classes below, each type have multiple subtypes：
1), controller is to OLT device information：Initiated by controller and be directly used in the state of detection PON physical resources；
2), asynchronous information：The network event of controller is initiated and be used to update by OLT device and changes the state of physical resource；
3), synchronizing information：It is initiated by controller or OLT in the case of no request, for establishing connection；
（2）, ONU configuration mechanism
The ONU newly to network is logical by the specific information upward OLT after completing to lead to the link tune of OLT physical hardware layers
Itself initial physical resource Information is all reported to control plane, and obtains initial configuration information from control layer by road；
The ONU reports physical resource Information to include and be not limited to following information：ONU marks, ONU slots number, ONU end slogan, S-
VLAN、C-VLAN（The business information for mainly carrying cpe side can be used for identifying following type of service demand）、LLID
（EPON）, T-CONT types and parameter（GPON）, GEM Port ID and parameter（GPON）, MAC Address, No. SN, etc..
4th step, shared PON equipment increase telecom operators' software definition mark
（1）, when multi-operator shares virtual passive optical network, in the communication protocol stack between OLT and ONU increase extension
Byte, for identifying telecom operators；Whether the extended byte enables the PON system webmaster setting by guard station operator；Such as：
In EPON/GPON systems, increase the extended byte of mark telecom operators in lead code, and EXTEND is set in lead code
Byte, for setting whether extension enables extended byte.When guard station operator network management system sets EXTEND as TRUE, then should
OLT and ONU starts the byte under PON system and corresponding system judges and treatment mechanism.
（2）, the pre-set first line of a couplet port set by being linked to each telecom operators in OLT device；
（3）, all ONU be respectively provided with load telecom operators mark, the operation trade mark of the ONU is inputted when user activates the service
Know；
Such as：
1）The LLID of EPON technologies can be identified and be extended；
2）Extension can be identified in GPON SN；
3）Extension can be separately identified in EPON/GPON systems, in addition to LLID, No. SN.
4）Operator identifier can be set in software systems.
（4）, starting extension telecom operators mark PON system in, according to telecom operators mark and business mark
Know, the PON system is defined as multiple virtual flogic systems, the logic system according to set telecom operators' quantity
The size of system resource distribution is divided automatically with each telecom operators ownership quantity and per how much decisions of number of services
Match, implement adjustment, the parts intermediate ODN are then all shared；
5th step, multi-operator share active configuration mechanism
（1）, control plane is numbered according to ONU physical hardwares and operator identifier, generate soft definition mark in each flogic system
Know, and generates relevant mapping table；
（2）, the control plane is in real time by PON system hardware resource situation（Containing OLT and ONU）Report the webmaster system of each operator
System；
（3）, each operator monitor, manage, configuring the virtual resource of oneself, cannot see that the resource of other operators；Pass through money
The software implementation in source defines, and on the one hand improves the safety of shared PON system, also simplifies the management of each telecom operators.
6th step, data forwarding mechanism
（1）, each operator forwarding strategy is sent to by control plane by webmaster or operation system；Telecom operators itself
Network management system or operation system configure the forwarding strategy of corresponding soft definition mark, and corresponding strategies are in addition to ONU according to each
Class packet header domain includes to be matched；It is not limited to：Input interface, MAC source addresses, MAC destination addresses, ethernet type, Vlan
Id, Vlan priority, IP source addresses, IP destination addresses, IP agreements, IP ToS, TCP/UDP target ports, source
Mouth, service type and interface index etc..Each domain includes one and determines value or all values（any）, more accurately match
It can be realized by mask.
Each field can determine which kind of domain to carry out data forwarding using with wildcard, user；
Such as：If the forwarding strategy that user works out only needs to be route according to destination IP, then can be only in forwarding table
Purposefully IP fields are effective, other to be all wildcard；
Such as the VOIP speech businesses from ONU, it is configurable to the stream that destination IP is a.b.c.d and is all forwarded to OLT uplinks
Port 1；
Such as the data service that VLAN ID are L, it can configure and all be forwarded to OLT upstream Interfaces 2；
Such as the data service that VLAN priority is M, it is configurable to all be forwarded to OLT upstream Interfaces 3；
（2）, the control plane according to the forwarding strategy of each operator, match soft definition of the ONU in each flogic system
Mark, the first line of a couplet port-mark of each operator and logical resource situation, form initial forwarding table, and it is flat to issue OLT forwardings
Face；
（3）, as shown in fig. 7, main equipments of the OLT as forwarded plane, data packet repeating process by OLT hardware
It exchanges data channel to complete, component part of the controller as control plane is responsible for the control of data forwarding, to realize data
The separation of forwarding and data forwarding control；Controller can control the forwarding table in OLT by transfer control protocol, to reach
To the purpose of control data forwarding；
（4）, after OLT receives data packet, the matching entry of message is searched first in the forwarding table of local software（It also can be by pre-
If jumping directly to a certain forwarding table）, if there is matching, then forward with directly carrying out data, data packet be otherwise transmitted to institute
Controller or discarding are stated, by controller according to the unified matching strategy preset, forwarding port is determined, increases the new of forwarding table
List item, and OLT will be issued；It is as shown in Figure 8 to search matching process.
The management of 7th step, system
（1）, control plane have highest extent of competence, management and monitoring PON system in all OLT and ONU hardware and software
Change the resource of definition, and manages mapping table；
（2）, the control plane resource information of soft definition is sent to the network management systems of each telecom operators, i.e. telecom operation
The network management system of quotient can only receive and itself relevant soft definition resource information；The network management system of telecom operators does not embody
The hardware resources such as OLT correlations uplink plate card, PON interface boards, PON interfaces, mating board in PON system.Only display meets
Correlation with this telecom operators redefine after soft resources.That is the webmaster of telecom operators is only able to display and this operator phase
The soft resources such as the OLT first line of a couplet port of pass and ONU, ONU end mouth and relevant traffic priority.And it can only be in itself visual money
Configuration operation is carried out in source range.
Such as：Telecom operators 1 can only read and be linked to 1 relevant first line of a couplet end of telecom operators on being shown in PON system
Priority policy that mouthful resource, the ONU of the user side of telecom operators 1, ONU end mouth resource, this telecom operators can be arranged is adjusted
Spend the soft resources such as strategy.
The realization of 8th step, Chi Zuhua
（1）, carry out unified software implementation by two or more OLT and define, form the pond group PON system of the soft definition of bigger,
Extend capacity；
（2）, as shown in figure 9, the link circuit resource of the different OLT physical systems is scheduled as same system or standby each other
Part, realize Safety Redundancy function；Realization on physical equipment and chain road and is deposited by existing network with target network, is realized seamless
Transition.
9th step, virtual network topology
Manager creates virtual network topology by controller, and multiple virtual LAN are established while not changing physical network
LAN or virtual MAN WAN；By the mechanism, a concentration virtual controlling screen can be established, convenient for the management that network is unified.
Controller can provide the unified network view of the cross-system framework of across a network level, improve the security performance of the whole network.It is logical
The problems such as crossing the flow information for allowing administrator clearly to know the whole network, can more simply identifying the invasion of network, can also have
Effect solves the congestion in network and plant issue.
Tenth step, QoS are realized
Configured based on forwarding table using the whole QoS of virtual passive optical network, realize link establishment end to end, safeguard and
It removes；Either which kind of PON, physical resource all do not have to take it into account by the virtualization apparatus of level of abstraction, therefore when configuration QoS
Physical link is that the unification that application module issues can be all ensured according to QoS on EPON or on GPON or on WDM PON
Strategy, forwarding-table item is configured by controller and forwards data；It is identified by the ONU finishing services of virtual passive optical network, into
Hierarchical QoS configuration is carried out to one step, Diffserv priority mappings and priority scheduling function is realized, reaches different business
Bandwidth control, traffic shaping and queue scheduling QOS functions；It is achieved in and essence is carried out to the bandwidth of each website, each Business Stream
Thin control achievees the purpose that ensure teleservice QoS；
11st step, safety guarantee and the realization that transition coexists
As shown in Figure 10, after PON equipment is by virtualization, using the link circuit resource of different OLT physical systems as same system into
Row scheduling backups each other, and realizes Safety Redundancy function；It simultaneously can also be by existing network and target network in physical equipment
With chain road and deposit, realize seamless transitions.
12nd step, power-saving mechanism are realized
Control layer can not only improve money according to the distribution according to need of the live load of each virtual resource of forwarding, dynamic dispatching resource
The utilization rate in source may also reach up energy-saving and environment-friendly purpose；Using virtual passive optical network framework, in the premise for not influencing performance
Under, it is route according to network load Dynamic Programming, so as to selectively close off or hang in the case where network load is not high
Partial network devices are played, energy-saving mode is made it into and achievees the purpose that energy conservation and environmental protection, cuts operating costs.
13rd step and upper layer network coordinated management
As shown in figure 11, the seamless fusion of access net and Metropolitan Area Network (MAN), backbone network is got up, forms unified the whole network pipe end to end
Control mechanism directly establishes forward-path end to end, does not need complicated protocol conversion, breaks through network performance bottleneck, realizes end
To the QoS guarantee mechanism at end.
PON of the present invention include gigabit passive optical network GPON, the passive optical network EPON based on Ethernet,
10G EPON, next NGPON and WDM PON；Next NGPON is 10G GPON and later release.
Claims (2)
1. a kind of multi-operator ODN shares and isomery PON Explore of Unified Management Ideas, it is characterised in that：Include the following steps：
The first step, the soft virtual passive optical network total system frame of definition
Open network operating system and Unified Control Plane are set, and the isolated PON frameworks of various standards closing are changed into can
Programming, intelligence controllableization, the open architecture for supporting third-party application provide open control in PON access nets
Interface, the programmable intelligent control platform of realization, while using virtualization apparatus by the virtual flexible partition of resource for multiple slices,
Respectively independent forwarding in each comfortable virtual resource channel of each Operator Specific Service；
Second step, each component part of virtual passive optical network
（1）, the soft OLT and ONU for defining virtual passive optical network on the basis of existing PON system framework, it is soft to increase setting
The forwarding table and state table of part system；
（2）, the forwarding table be made of multiple forwarding-table items, PON system determines by searching for the list item of forwarding table to receiving
Data flow take suitable instruction；
（3）, in virtual passive optical network framework, between control plane and PON Forwarding plane is virtualization apparatus, described
Virtualization apparatus plays the role of hardware resource abstract in entire framework；The virtualization of PON network equipment physical resource is arrived
In controller, and resource impact library is formed, resource point is arranged thus according to the scheduling strategy and service priority pre-established
Match, network operator realizes the centralized control of soft definition in virtual passive optical network framework；
Physical resource is divided into multiple logical resources by virtualization apparatus, each logical resource has different address rules
And forwarding mechanism, and identical physical equipment can be shared；The virtualization apparatus is placed in the software systems of OLT, or is placed in control
In device software systems processed；
The OLT and ONU of all kinds of PON systems are virtualized by difference the case where respective physical resource, are realized multiple isomery PON
It is managed as a system equipment；
（4）, the main equipment of the OLT as forwarded plane, data packet repeating process leads to by the hardware-switch data of OLT
Road complete, component part of the controller as control plane, be responsible for data forwarding control, to realize data forwarding with
The separation of data forwarding control；Controller controls the forwarding table in OLT by transfer control protocol, to reach control data
The purpose of forwarding；
（5）, control plane controller have multiple formation ponds group structure, but same time Forwarding plane OLT is only by an institute
The control of controller is stated, if current controller breaks down, the control to OLT is taken over by spare controller；
（6）, transfer control protocol performed by controller and OLT interactions software be unified and standard software interface, the control
Device processed controls a variety of isomery PON OLT devices；
（7）, controller uniform operating system software the main body of Open Control framework, the controller are provided for upper layer application
Unified development interface is provided for upper layer application and is interacted with bottom hardware by open hardware control interface, can be compiled with realizing
Journeyization controls and management；
Third step, virtual passive optical network configuration work mechanism
（1）, OLT initial configuration mechanism
One OLT opens the specific information channel between control plane after the link tune for completing physical hardware layer is logical, should
Specific information channel carries out information exchange for the OLT Forwarding plane and the control plane, and by the channel, OLT will be certainly
The initial physical resource Information of body is all reported to control plane, and obtains initial configuration information from control layer；Interactive information is adopted
It with cipher mode, is set automatically by artificial or system, the OLT configuration informations newly initialized is added to pond group
OLT is used in pond；
（2）, OLT other mechanism with control plane
The specific information channel obtains the state of PON physical resources for usually controller, by the status information of Forwarding plane
Update the controller, while the interaction for managing the Forwarding plane and associated statistical information；Interactive information is mainly divided
Several classes below, each type have multiple subtypes：
1), controller is to OLT device information：Initiated by controller and be directly used in the state of detection PON physical resources；
2), asynchronous information：The network event of controller is initiated and be used to update by OLT device and changes the state of physical resource；
3), synchronizing information：It is initiated by controller or OLT in the case of no request, for establishing connection；
（2）, ONU configuration mechanism
The ONU newly to network is logical by the specific information upward OLT after completing to lead to the link tune of OLT physical hardware layers
Itself initial physical resource Information is all reported to control plane, and is obtained just from control layer by road
4th step, shared PON equipment increase telecom operators' software definition mark
（1）, when multi-operator shares virtual passive optical network, in the communication protocol stack between OLT and ONU increase extension
Byte, for identifying telecom operators；Whether the extended byte enables the PON system webmaster setting by guard station operator；
（2）, the pre-set first line of a couplet port set by being linked to each telecom operators in OLT device；
（3）, all ONU be respectively provided with load telecom operators mark, the operation trade mark of the ONU is inputted when user activates the service
Know；
（4）, starting extension telecom operators mark PON system in, according to telecom operators mark and service identification, will
The PON system is defined as multiple virtual flogic systems, the flogic system money according to set telecom operators' quantity
The size of source configuration is distributed automatically with each telecom operators ownership quantity and per how much decisions of number of services, real
Adjustment is applied, the parts intermediate ODN are then all shared；
5th step, multi-operator share active configuration mechanism
（1）, control plane is numbered according to ONU physical hardwares and operator identifier, generate soft definition mark in each flogic system
Know, and generates relevant mapping table；
（2）, the control plane PON system hardware resource situation is reported to the network management system of each operator in real time；
（3）, each operator monitor, manage, configuring the virtual resource of oneself；
6th step, data forwarding mechanism
（1）, each operator forwarding strategy is sent to by control plane by webmaster or operation system；Telecom operators itself
Network management system or operation system configure the forwarding strategy of corresponding soft definition mark, and corresponding strategies are in addition to ONU according to each
Class packet header domain includes to be matched；
（2）, the control plane according to the forwarding strategy of each operator, match soft definition of the ONU in each flogic system
Mark, the first line of a couplet port-mark of each operator and logical resource situation, form initial forwarding table, and it is flat to issue OLT forwardings
Face；
（3）, the main equipment of the OLT as forwarded plane, data packet repeating process leads to by the hardware-switch data of OLT
Road is completed, component part of the controller as control plane, is responsible for the control of data forwarding, to realize data forwarding and data
Forward the separation of control；
（4）, after OLT receives data packet, the matching entry of message is searched first in the forwarding table of local software, if there is
Match, then forwards with directly carrying out data, data packet is otherwise transmitted to the controller or discarding, by controller according to presetting
Unified matching strategy, determine forwarding port, increase the new list item of forwarding table, and OLT will be issued；
The management of 7th step, system
（1）, control plane have highest extent of competence, management and monitoring PON system in all OLT and ONU hardware and software
Change the resource of definition, and manages mapping table；
（2）, the control plane resource information of soft definition is sent to the network management systems of each telecom operators, i.e. telecom operation
The network management system of quotient can only receive and itself relevant soft definition resource information；
The realization of 8th step, Chi Zuhua
（1）, carry out unified software implementation by two or more OLT and define, form the pond group PON system of the soft definition of bigger,
Extend capacity；
（2）, the link circuit resource of the different OLT physical systems is scheduled or backuped each other as same system, realize and pacify
Full redundancy function；
9th step, virtual network topology
Manager creates virtual network topology by controller, and multiple virtual LAN are established while not changing physical network
LAN or virtual MAN WAN；
Tenth step, QoS are realized
Configured based on forwarding table using the whole QoS of virtual passive optical network, realize link establishment end to end, safeguard and
It removes；It is identified by the ONU finishing services of virtual passive optical network, further carries out Hierarchical QoS configuration, realized
Diffserv priority mappings and priority scheduling function reach bandwidth control, traffic shaping and the queue scheduling of different business
QOS functions；It is achieved in and the bandwidth of each website, each Business Stream is finely controlled, reach and ensure teleservice QoS
Purpose；
11st step, safety guarantee and the realization that transition coexists
After PON equipment is by virtualization, the link circuit resource of different OLT physical systems is scheduled as same system or each other
Safety Redundancy function is realized in backup；
12nd step, power-saving mechanism are realized
Control layer is according to the distribution according to need of the live load of each virtual resource of forwarding, dynamic dispatching resource；
13rd step and upper layer network coordinated management
The seamless fusion of access net and Metropolitan Area Network (MAN), backbone network is got up, forms unified the whole network mechanism of control end to end, directly
Establish forward-path end to end.
2. multi-operator ODN according to claim 1 shares and isomery PON Explore of Unified Management Ideas, it is characterised in that：It is described
PON include gigabit passive optical network GPON, passive optical network EPON, the 10G EPON based on Ethernet, next NGPON and
WDM PON；Next NGPON is 10G GPON and later release.
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