CN106411664B - A kind of metropolitan area network system - Google Patents
A kind of metropolitan area network system Download PDFInfo
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- CN106411664B CN106411664B CN201610825842.XA CN201610825842A CN106411664B CN 106411664 B CN106411664 B CN 106411664B CN 201610825842 A CN201610825842 A CN 201610825842A CN 106411664 B CN106411664 B CN 106411664B
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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]
- H04L12/2852—Metropolitan area networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q11/0067—Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring
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Abstract
The embodiment of the present invention provides a kind of metropolitan area network system, is related to field of communication technology, can be improved the deployment efficiency of business, reduces the construction cost of the network capacity extension.The Metropolitan Area Network (MAN) includes: CPE, the optical access network connecting with CPE, at least one the first whitepack interchanger connecting with optical access network, and at least one first whitepack interchanger is connect with this IDC and CR；IDC includes SDN controller and multiple VNF；CPE supports OpenFlow agreement, for being forwarded under the control of the SDN controller to the data between user terminal and the optical access network；At least one first whitepack interchanger is used to complete the data forwarding between IDC, optical access network and CR under the control of SDN controller；Optical access network is used to transmit the data access optical-fiber network of customer service；CR is for being forwarded the data received.
Description
Technical field
The present invention relates to field of communication technology more particularly to a kind of metropolitan area network systems.
Background technique
Metropolitan Area Network (MAN) is also referred to as broadband metropolitan area network or IP Metropolitan Area Network (MAN), is the data for covering all kinds of offer broadband access in entire city
Communication network.Currently, the construction of Metropolitan Area Network (MAN) is divided into three layers, core layer, control layer and access layer.Wherein, core layer mainly includes core
Heart router (Core Router, CR), outlet device and backbone network as Metropolitan Area Network (MAN) interconnect.Control layer includes broadband network
Gateway control (Broadband Network Gateway, BNG) equipment carries out local routing for the flow to customer service
Processing is sent to CR after treatment, to provide service for user.Access layer includes all kinds of optical access devices, with user's end
End equipment (Customer Premise Equipment, CPE) connection will receive after CPE carries out protocol processes
Data are transmitted.
However, due in existing net BNG equipment and CPE be the special equipment of software and hardware integration, and the mark of each producer
Quasi- and disunity, there may be differents by the BNG equipment for leading to production and CPE, therefore, the business that each operator provides with
The binding of hardware depth.As gradually increasing for customer service demand leads to opening for new business due to being limited by special equipment
Hair and deployment efficiency are lower, and the high construction cost of the network capacity extension.
Summary of the invention
The embodiment of the present invention provides a kind of metropolitan area network system, can be improved the deployment efficiency of business, reduces the network capacity extension
Construction cost.
In order to achieve the above objectives, the embodiment of the present invention adopts the following technical scheme that
In a first aspect, the embodiment of the present invention provides a kind of metropolitan area network system, comprising: the customer terminal equipment CPE and CPE
The optical access network of connection, at least one the first whitepack interchanger being connect with the optical access network, and with this at least one first
The internet data center (Internet Data Center, IDC) of whitepack interchanger connection and CR；The IDC includes software definition
Network (Software Defined Network, SDN) controller and multiple virtual network function (Virtualised
Network Function, VNF), the SDN controller is for this, at least one the first whitepack interchanger and the CPE to be controlled
System, multiple VNF includes the VNF for realizing access function, the VNF for realizing subscriber management function, for realizing address
The VNF of management function, for realizing the VNF of path computation function, for realizing the VNF of authentication and accounting function, for realizing stream
Measure the VNF of the monitoring function and VNF for realizing policy management capability；The CPE supports OpenFlow agreement, at this
The data between user terminal and the optical access network are forwarded under the control of SDN controller；At least one first whitepack
Interchanger is for completing the data forwarding between the IDC, the optical access network and the CR under the control of the SDN controller；It should
Optical access network is used to transmit the data access optical-fiber network of customer service；The CR is for being forwarded the data received.
Metropolitan area network system provided in an embodiment of the present invention can be embodied as user's industry by the combination of the VNF of types of functionality
The service that business provides improves service deployment efficiency, so that the realization of all kinds of business in Metropolitan Area Network (MAN) is no longer dependent on special equipment.
It can reach dilatation when network only needs to increase the VNF of corresponding function when overloaded, to reduce the equipment cost of network valuableness, subtract
The construction cost of few network capacity extension；When the VNF that network passes through release corresponding function at light load can reduce resource occupation.
Optionally, which is also used to carry out speed limit to the flow of the customer service under the control of the SDN controller.
Optionally, which further includes the second whitepack exchange group and multiple virtual switches, and multiple VNF and the SDN are controlled
Device processed is connect by multiple virtual switch with the second whitepack exchange group, the second whitepack exchange group and this at least one
A first whitepack interchanger connection, the second whitepack exchange group and multiple virtual switch are used in the SDN controller
The data transmitted in the IDC are forwarded under control.
Optionally, multiple VNF further includes the VNF for realizing value-added service.
Optionally, the CPE, the optical access network, at least one first whitepack interchanger and the IDC are accessed using IPOE
Mode accesses customer service.
By the optional way, allow user when applying for different business using the same IPoE account, to reduce
Account quantity, to and reduce the complexity of account control and management.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to needed in the embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention.
Fig. 1 is a kind of metropolitan area network system schematic diagram provided in an embodiment of the present invention；
Fig. 2 is a kind of IDC schematic diagram provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
SDN is a kind of new network of Emulex network innovation framework, is a kind of implementation of network virtualization, and core technology is to pass through
The control plane of the network equipment is separated with data surface, to realize the flexible control of network flow, becomes network more
Intelligence.And network function virtualization (Network Function Virtualization, NFV) technology is one kind in general object
Manage the technology of operational network function in equipment.It can be by the virtualization of function of dedicated network element, and in common apparatus by NFV technology
Upper operation makes common apparatus realize the function of dedicated network element, to avoid network function and apparatus bound, improves the deployment of business
Efficiency.
Based on SDN technology and NFV technology, the embodiment of the present invention provides a kind of metropolitan area network system, can be improved the portion of business
Affix one's name to efficiency, reduce the device is complicated degree, reduce network construction cost.
It should be noted that the term " system " that can be related to herein and " network " are often made by interchangeable herein
With.Term "and", only a kind of incidence relation for describing affiliated partner, indicates may exist three kinds of relationships, for example, A and B,
Can indicate: individualism A exists simultaneously A and B, these three situations of individualism B.In addition, character "/" herein, general table
Show that forward-backward correlation object is a kind of relationship of "or".
When the embodiment of the present invention refers to ordinal numbers such as " first ", " second ", " third " or " the 4th ", unless according to upper
The hereafter meaning of its certain order of representation, it is appreciated that being only to distinguish to be used.In addition, term " includes " and " having "
And their any deformations, it is intended that cover and non-exclusive include.
As shown in Figure 1, being a kind of metropolitan area network system provided in an embodiment of the present invention, comprising: CPE, the light being connect with the CPE
Access net, at least one the first whitepack interchanger connecting with the optical access network connect at least one first whitepack interchanger
The IDC and CR connect.
Specifically, IDC provided in an embodiment of the present invention, including SDN controller and multiple VNF.The SDN controller for pair
At least one first whitepack interchanger and the CPE are controlled.Multiple VNF include for realizing access function VNF, use
In realize the VNF of subscriber management function, the VNF for realizing address management function, the VNF for realizing path computation function,
For realizing the VNF of authentication and accounting function, for realizing the VNF of flow monitoring function and for realizing policy management capability
VNF。
Illustratively, in Metropolitan Area Network (MAN) provided in an embodiment of the present invention, all VNF for realizing access function in IDC
It is properly termed as AM access module.Illustratively, the IPoE access packet parsing now realized in net by BNG equipment, IPoE protocol processes,
The functions such as IP address acquisition, the acquisition of domain name system (Domain Name System, DNS), bandwidth resources acquisition, domain management,
The IPoE client functionality realized by existing CPE, network address translation (Network Address Translation, NAT)
Etc. functions, can be realized by the VNF in the AM access module.
All VNF for realizing subscriber management function are properly termed as user management module, user management module in the IDC
It can be specifically used for being managed the information of user, for example, to information such as the user name of user, password, business access rights
It is managed, so that the access and certification for user provide information foundation.
All VNF for realizing address management function are properly termed as address management module, address management module in the IDC
It specifically can be used for that the IP address of user is allocated and is managed, to ensure that IP address resource obtains reasonable employment.For example,
The address management module can complete wide band access user and the IP address distribution and release of enterprise customer, public network address segment port
Distribution and release, the functions such as calculating and alarm of the utilization rate of address pool, can also according to region distribute with address field ground
Location, to carry out place mat for route aggregation.
All VNF for realizing path computation function are properly termed as path calculation module in the IDC, illustratively, should
Path calculation module can be used for the path computing to the uplink traffic of user, and the path computing under load sharing condition is all kinds of
The path computing in tunnel designs, the path computing of all kinds of value-added services, and the calculating etc. of the Routing Protocol interaction path to CR.
All VNF for realizing authentication and accounting function are properly termed as authentication and accounting module in the IDC, the authentication and accounting mould
Block specifically can be used for completing the certification, authorization, billing function of wide band access user, while the authentication and accounting module can be with complete
It is adjusted at user's dynamic authorization and dynamic bandwidth, can also complete related value-added service authorizes charging.
All VNF for realizing flow monitoring function are properly termed as flow monitoring module in the IDC, illustratively, should
Flow monitoring module can be used for monitoring the flow of each accessing user, monitors each link flow situation, monitors each VNF's
Traffic conditions, the flow load of each whitepack interchanger, monitoring server, the traffic conditions of virtual switch in monitoring network
Deng.
All VNF for realizing policy management capability are properly termed as policy management module, policy management module in the IDC
Specifically it can be used for being managed NAT strategy, firewall policy, deep-packet detection strategy, load balancing, qos policy.
For example, by the load-balancing function of BNG, existing CPE or load-balanced server realization, NAT44 function, fire prevention in existing net
Wall function, deep-packet detection function, qos policy etc. can be realized by the policy management module.
It is understood that in Metropolitan Area Network (MAN) provided in an embodiment of the present invention, the VNF including realizing types of functionality, so that
It includes BNG and CPE to realize that customer service, which is no longer based on special equipment, in Metropolitan Area Network (MAN), to reduce in by will now net
The Various types of data processing function of CPE, BNG equipment and the function of other dedicated network elements are virtualized, and to virtualization after
Function is reconstructed, and is divided into new functional module, and IDC can be combined into user by the group of the VNF of types of functionality and provide service,
So that the deployment of new business is more flexible.
In one example, with the growth of user demand, when Metropolitan Area Network (MAN) needs to realize some value-added services, if above-mentioned
Functional module can not realize these value-added services by way of business chain, then can also increase new functional module to realize
These value-added services further include the VNF for realizing value-added service in multiple VNF in the i.e. IDC.
Further, CPE provided in an embodiment of the present invention supports OpenFlow agreement, can be in the control of SDN controller
Under the data between user terminal and the optical access network are forwarded.
It is worth noting that CPE provided in an embodiment of the present invention is not necessarily to carry out protocol processes and complicated configuration management function
Energy, such as nat feature, firewall functionality and routing function of three layer protocols etc., the CPE can press the data received
Different business, such as broadband access network business, video traffic and person's voice service etc. are identified according to receiving port, then basis
The data received are sent on the corresponding ports of optical access network by the flow table that SDN controller issues, and are sent out with being transmitted by optical fiber
It send to the first whitepack interchanger.Compared to existing CPE, CPE provided in an embodiment of the present invention is on hardware without supporting three layers
Agreement thus greatly reduces the complexity of CPE without carrying out complicated configuration.
In one example, CPE provided in an embodiment of the present invention can be also used under the control of SDN controller to user
The flow of business carries out speed limit.For example, SDN controller by OpenFlow agreement or network configuration (netconf) agreement to
CPE sends speed limiting attribute information, so that CPE carries out speed limit according to flow of the speed limiting attribute information to designated user's business.
At least one first whitepack interchanger is used to complete IDC, optical access network under the control of SDN controller and is somebody's turn to do
Data forwarding between CR.
It is understood that whitepack interchanger is that a kind of physical switches hardware is made by configuring corresponding software function
It realizes corresponding forwarding capability.For example, can be made by configuring software systems identical with router on whitepack interchanger
Obtain the function that the whitepack interchanger realizes router；By configuring software identical with three-tier switch system on whitepack interchanger
System may make the whitepack interchanger to realize the function etc. of three-tier switch.It is set compared to having disparate networks to exchange in existing net
It is standby, it can reduce networking cost using whitepack interchanger, realize the flexible configuration of forwarding capability.
First whitepack interchanger provided in an embodiment of the present invention is a kind of whitepack interchanger for supporting OpenFlow agreement, energy
It is enough that data forwarding function is completed under the control of SDN controller, for example, the first whitepack interchanger can be in SDN controller
Under control in realizing existing net convergence switch function, also can be realized the forwarding capability of BNG equipment in existing net.
The optical access network is used to transmit the data access optical-fiber network of customer service.Illustratively, which can be with
It mainly include ONT Optical Network Terminal (Optical network for passive optical network (Passive Optical Network, PON)
Terminal, ONT)/optical node (Optical Network Unit, ONU), optical line terminal (optical line
Terminal, OLT).Wherein, ONT/ONU is connect with the CPE and OLT, and OLT is connect with the first whitepack interchanger.PON is user
Data provide intelligent acess service, and user data is transmitted in optical-fiber network high speed.Optionally, which can also
Think active optical network (Active Optical Network, AON).In this regard, the embodiment of the present invention is not limited.
CR is for being forwarded the data received.Specifically, in embodiments of the present invention, it is white that CR can receive first
The data that box interchanger is sent, and by the data forwarding to backbone network, also the data of Backbone Transport can be sent to first
Whitepack interchanger, the data forwarding of Backbone Transport to IDC to be handled by the first whitepack interchanger, or it is white by first
The data of Backbone Transport are forwarded directly to optical access network and transmitted by box interchanger.It is understood that Metropolitan Area Network (MAN) passes through
CR realizes the connection with backbone network, and CR can complete the data forwarding of high speed between Metropolitan Area Network (MAN) and backbone network, is going out for Metropolitan Area Network (MAN)
Jaws equipment.
Metropolitan area network system provided in an embodiment of the present invention can be embodied as user's industry by the combination of the VNF of types of functionality
The service that business provides improves service deployment efficiency, so that the realization of all kinds of business is no longer dependent on special equipment.When network heavy duty
When only need to increase the VNF of corresponding function and can reach dilatation, to reduce the equipment cost of network valuableness；When network at light load
VNF by discharging corresponding function can reduce resource occupation.
Further, as shown in Fig. 2, IDC provided in an embodiment of the present invention can be by one or more data
The heart is constituted, and each data center may include the part VNF in above-mentioned multiple VNF, and each VNF can be at least one virtual machine
It is run on (Virtual Machine, VM).
The IDC can also include the second whitepack exchange group and multiple virtual switches, and multiple VNF and the SDN are controlled
Device is connect by multiple virtual switch with the second whitepack exchange group, the second whitepack exchange group and this at least one
First whitepack interchanger connection, wherein the second whitepack interchanger of each of the second whitepack exchange group can also be supported
OpenFlow agreement can be forwarded the data received according to the flow table that SDN controller issues.Multiple virtual switch
Each virtual switch (Virtual Switch, vSwitch) in machine is a kind of for interconnecting VM, and VM is connected to object
The software realization for managing network (i.e. the second whitepack interchanger) can be realized information exchange between VM and VM and physical network
Between information exchange.
In embodiments of the present invention, the second whitepack exchange group and multiple virtual switch can be controlled in the SDN
The data transmitted in the IDC are forwarded under the control of device.Optionally, as shown in Fig. 2, the IDC further includes that may include
Synergist and composer, the synergist can be used for cooperateing with the virtual resource of VNF in the IDC.If the IDC includes multiple SDN controls
When device processed, which can be used for cooperateing with multiple SDN controller, so that multiple SDN controller can pass through phase
The control to CPE, whitepack interchanger and VFN in the Metropolitan Area Network (MAN) is completed in mutually cooperation.
The composer can be used for the business demand according to user, carries out layout to multiple VNF in the IDC, determines energy
It enough realizes business demand VNF combined strategy, and the VNF combined strategy is sent to path calculation module, so that the path
The policy calculations forward-paths such as computing module combination Routing Protocol, load balancing, by multiple VNF in the VNF combined strategy,
It is connected by the forward-path of the second whitepack exchange group and multiple virtual switches, forms business chain.The path computing mould
Block is by being sent to SDN controller for the path of calculating, so that SDN controller generates corresponding flow table, to control CPE, first
Whitepack interchanger, the second whitepack interchanger and virtual switch will be in data incoming traffic chains corresponding with the business.
In one example, CPE provided in an embodiment of the present invention, optical access network, at least one first whitepack interchanger with
And IDC accesses customer service using IPOE access way.
In general, a user when applying for different business, may use different accounts, used for existing CPE identification
The different business of family application, such as using point-to-point protocol (the Point to based on Ethernet when application wideband switch-in business
Point Protocol over Ethernet, PPPoE) account, IPoE agreement account is used when log on television services.And
In this application, PPPoE access way is replaced by IPoE access way, allows users to be all made of when applying for different business
One IPoE account, and CPE provided in an embodiment of the present invention can identify different business by access interface, to reduce
Account quantity, and the complexity of account control and management is reduced, and reduce the connection number between equipment.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (4)
1. a kind of metropolitan area network system characterized by comprising customer terminal equipment CPE, the optical access network being connect with the CPE,
At least one the first whitepack interchanger being connect with the optical access network, and connect at least one described first whitepack interchanger
The internet data center IDC and core router CR connect；
The IDC includes software defined network SDN controller and multiple virtual network function VNF, the SDN controller for pair
At least one described first whitepack interchanger and the CPE are controlled, and the multiple VNF includes for realizing access function
VNF, the VNF for realizing subscriber management function, the VNF for realizing address management function, for realizing path computation function
VNF, for realizing the VNF of authentication and accounting function, for realizing the VNF of flow monitoring function and for realizing tactical management
The VNF of function；
The CPE supports OpenFlow agreement, under the control of the SDN controller to user terminal and the soft exchange
Data between net are forwarded；
At least one described first whitepack interchanger is used to complete the IDC under the control of the SDN controller, the light connects
Data forwarding between networking and the CR；
The optical access network is used to transmit the data access optical-fiber network of customer service；
The CR is for being forwarded the data received；
The CPE, the optical access network, at least one described first whitepack interchanger and the IDC use the access side IPOE
Formula accesses customer service.
2. metropolitan area network system according to claim 1, which is characterized in that the CPE is also used in the SDN controller
Speed limit is carried out to the flow of the customer service under control.
3. metropolitan area network system according to claim 1, which is characterized in that
The IDC further includes the second whitepack exchange group and multiple virtual switches, the multiple VNF and the SDN controller
Connect by the multiple virtual switch with the second whitepack exchange group, the second whitepack exchange group and it is described extremely
Few first whitepack interchanger connection, the second whitepack exchange group and the multiple virtual switch are used for described
The data transmitted in the IDC are forwarded under the control of SDN controller.
4. metropolitan area network system according to claim 1, which is characterized in that the multiple VNF further includes for realizing increment
The VNF of business.
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| US11533777B2 (en) | 2018-06-29 | 2022-12-20 | At&T Intellectual Property I, L.P. | Cell site architecture that supports 5G and legacy protocols |
| US10728826B2 (en) | 2018-07-02 | 2020-07-28 | At&T Intellectual Property I, L.P. | Cell site routing based on latency |
| CN108809796A (en) * | 2018-07-16 | 2018-11-13 | 成都芮捷科技发展有限责任公司 | A kind of Metropolitan Area Network (MAN) power system service communication means based on VxLAN |
| CN108833284B (en) * | 2018-08-01 | 2021-04-06 | 郑州市景安网络科技股份有限公司 | Communication method and device for cloud platform and IDC network |
| US11296783B2 (en) * | 2019-03-27 | 2022-04-05 | Juniper Networks, Inc. | Managing satellite devices within a branch network |
| CN110830307B (en) * | 2019-11-21 | 2022-02-15 | 中盈优创资讯科技有限公司 | Network capacity expansion method and device |
| CN112511483A (en) * | 2020-03-02 | 2021-03-16 | 中兴通讯股份有限公司 | Data forwarding method, equipment and storage medium |
| CN114499735B (en) * | 2020-11-12 | 2024-02-13 | 中国电信股份有限公司 | Service transmission method, system and computer readable storage medium |
| CN112615943B (en) * | 2020-12-11 | 2022-02-22 | 深圳金信诺高新技术股份有限公司 | Address translation method and system for multi-CPE (customer premise equipment) test |
| CN112615749B (en) * | 2020-12-28 | 2023-04-18 | 广州西麦科技股份有限公司 | Flow scheduling system and method based on VXLAN and OpenFlow |
| CN113055766B (en) * | 2021-03-19 | 2022-06-03 | 中国联合网络通信集团有限公司 | End-to-end service processing system and method |
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| CN104219127A (en) * | 2014-08-30 | 2014-12-17 | 华为技术有限公司 | Creation method and device of virtual network instance |
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