CN107483141B - Ethernet link method for building up and controller - Google Patents
Ethernet link method for building up and controller Download PDFInfo
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- CN107483141B CN107483141B CN201610402905.0A CN201610402905A CN107483141B CN 107483141 B CN107483141 B CN 107483141B CN 201610402905 A CN201610402905 A CN 201610402905A CN 107483141 B CN107483141 B CN 107483141B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/16—Time-division multiplex systems in which the time allocation to individual channels within a transmission cycle is variable, e.g. to accommodate varying complexity of signals, to vary number of channels transmitted
- H04J3/1605—Fixed allocated frame structures
- H04J3/1652—Optical Transport Network [OTN]
- H04J3/1658—Optical Transport Network [OTN] carrying packets or ATM cells
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Abstract
The present invention proposes a kind of ethernet link method for building up and controller, is related to the field of optical networks of software definition.Wherein, ethernet link generation method of the invention includes: the ethernet link foundation request that controller acquisition request establishes ethernet link in being grouped enhanced optical-fiber network P-OTN network；Controller establishes Optical Channel Data Unit-k ODU connection of the request foundation from source node to destination node according to ethernet link；Controller is connected to the ethernet link that transmission channel establishes transmitting grouped data between source node and destination node with ODU.By such method, in P-OTN network, the ODU connection from source node to destination node can first be established, regeneration is connected to the ethernet link between the source node of transmission channel and destination node with the ODU, in the controller without instantiating multiple ODU nodes, topology is simplified, convenient for management, also improves the efficiency of ethernet link foundation.
Description
Technical field
The present invention relates to the field of optical networks of software definition, especially a kind of ethernet link method for building up and controller.
Background technique
OTN (Optical Transport Network, optical transfer network) equipment is towards the direction of comprehensive delivery platform
Development.From equipment vendor's angle, single general-purpose platform will substantially reduce research and development cost, by WDM (Wavelength Division
Multiplexing, wavelength-division multiplex), OTN and the equipment that rolls into one of grouping transmission Packet function be known as multiple service supporting OTN
Or P-OTN equipment.P-OTN (Packet-Optical Transport Network, be grouped enhanced optical transfer network) equipment is
Refer to while there is ODU (Optical channel Data Unit, Optical Channel Data Unit-k) to intersect and packet switch (such as ether
Net and MPLS-TP (Multi-Protocol Label Switch-Transport Profile, connection-oriented multi-protocols mark
Label exchange)) ability is, it can be achieved that TDM (Time Division Multiplexing, time division multiplexing) and the uniform services such as be grouped
The equipment of transmission is adapted to the different transmission net networks trategy of each operator using general-purpose platform.Simplified P-OTN equipment
Functional mode is as shown in Figure 1.For from customer side UNI (User Network Interface, User Network Interface) interface into
Enter to Packet Service (such as Ethernet), there is following two processing mode:
Mode one: business first passes through ODU Switching Module, is then output to line again after packet switch and mapping processing
Trackside NNI (Network to Network Interface, network node interface) interface (as shown in dotted line with the arrow).
Mode two: it is (such as with the arrow to be directly output to line side NNI interface after packet switch and mapping processing for business
It is shown in solid).
It, can be with after SDN (Software Defined Network, software defined network) theory is applied to transmission network
Improve transmission net in end-to-end networking capability multi-vendor, under multi-domain environment, that improves teleservice opens speed and network
Efficiency of operation enhances the business innovation ability and opening of transmission net.The research of SDN networking theory is introduced in transmission network at present
Emphasis is exactly the combination of P-OTN transport plane and SDN control plane.
In order in SDON (Software Defined Optical Network, software definition light as shown in Figure 2
Network) in multi-vendor P-OTN equipment is controlled, need to establish the uniform information model of P-OTN equipment.It is international at present
" the transmission API of ONF (The Open Networking Foundation, open network foundation) optical-fiber network working group
(Application Programming Interface, application programming interface) technical specification " is to P-OTN mode
One modeling method is described, and the modeling method of mode two is also among research.
It is at present to hand over each P-OTN equipment Ethernet that is connected to for a kind of modeling method of P-OTN DeviceMode two
The line-side interface for changing unit is instantiated as 1 abstract ODU switching node, further needs exist for the abstract ODU section of instantiation one
Point access ODU business.This method is more in the presence of instantiation abstract node quantity, the problem of topological maintenance management complexity；ETH
(Ethernet, Ethernet) connection is connected with ODU using one-to-one mapping mode, and is associated by single domain controller, no
It is able to achieve the shared of ODU service layer resource, therefore does not support the Ethernet virtual private line service of bandwidth sharing；ODU service layer road
The foundation of diameter drives automatic foundation, the poor controllability of network operator by ethernet layer connection requirement.
Summary of the invention
Enhance an object of the present invention is to provide a kind of low complex degree and efficiently by SDON controller in grouping
The scheme of ethernet link is established in type optical-fiber network.
According to an aspect of the present invention, a kind of ethernet link generation method is proposed, comprising: controller acquisition request exists
The ethernet link that ethernet link is established in P-OTN network establishes request, and it includes source node mark that ethernet link, which establishes request,
Know and destination node identifies；Controller establishes ODU connection of the request foundation from source node to destination node according to ethernet link；
Controller is connected to the ethernet link that transmission channel establishes transmitting grouped data between source node and destination node with ODU.
Optionally, if source node and destination node are located at same domain, controller acquisition request is built in P-OTN network
It includes: that single domain controller is obtained from controller management personnel, multiple domain control that the ethernet link of vertical ethernet link, which establishes request,
The ethernet link that ethernet link is established in the request of device or service node processed in P-OTN network establishes request；Controller root
Establishing the ODU connection that request is established from source node to destination node according to ethernet link includes: single domain controller according to Ethernet
Request for building link establishes the ODU connection from source node to destination node；Controller is connected to transmission channel with ODU and saves in source
Point destination node between to establish the ethernet link of transmitting grouped data include: that with ODU to be connected to transmission logical for single domain controller
Virtual ethernet link is established in road between source node and destination node, and the packet data from source node is sent through ODU connection
To destination node.
Optionally, if source node and destination node are located at not same area, controller acquisition request is built in P-OTN network
It includes: that multiple domain controller is obtained from controller management personnel or business section that the ethernet link of vertical ethernet link, which establishes request,
The ethernet link that ethernet link is established in the request of point in P-OTN network establishes request；Controller is according to ethernet link
Establishing the ODU connection that request is established from source node to destination node includes: road of the multiple domain controller from source node to destination node
The single domain controller of the diameter domain of dependence obtains segmentation ODU connection, and segmentation ODU connection is spliced into ODU connection；Controller is connected with ODU
Connecing and establishing the ethernet link of transmitting grouped data between source node and destination node as transmission channel includes: multiple domain controller
Transmission channel is connected to ODU, and virtual ethernet link is established between source node and destination node, point from source node
Group data are sent to destination node through ODU connection.
Optionally, the single domain controller of the path domain of dependence of the multiple domain controller from source node to destination node obtains segmentation
ODU connection includes: multiple domain controller according to the end-to-end routing of ethernet link foundation request execution, is determined from source node to purpose
The path domain of dependence of node generates segmentation ODU connection and establishes request, and it includes single domain source node mark that request is established in segmentation ODU connection
Know and single domain destination node identifies；Multiple domain controller will be segmented ODU connection foundation request and be separately sent to corresponding single domain control
Device；The segmentation ODU that single domain controller establishes from single domain source node to single domain destination node is connected and is reported multiple domain controller.
Optionally, further includes: controller generates ether net topology according to the ethernet link of foundation, in ether net topology
Every ethernet link is connected to transmission channel with corresponding ODU；Controller determines packet data according to ether net topology
Transmission path.
Optionally, further includes: controller obtains the remaining link resource information in P-OTN network, comprising: controller obtains
The resource occupation information of ODU connection in P-OTN network；Controller is based on P-OTN according to the resource occupation information of ODU connection
Physical link resource information between node in network determines remaining link resource information；Controller is established according to ethernet link
It includes: controller based on the remaining link circuit resource letter in P-OTN network that the ODU connection from source node to destination node is established in request
Breath establishes ODU connection of the request generation from source node to destination node according to ethernet link.
Optionally, source node includes: the node with packet circuit side plate card and/or the section with joint line side plate card
Point.
Optionally, destination node includes: node with packet circuit side plate card and/or with joint line side plate card
Node.
Optionally, ethernet link supports Ethernet Private Line business and/or Ethernet virtual private line service.
Optionally, it further includes capacity requirement that ethernet link, which establishes request,；ODU connection meets capacity requirement to ensure ether
Network chain road meets capacity requirement.
By such method, in P-OTN network, the ODU connection from source node to destination node can be first established, then
It generates and the ethernet link between the source node of transmission channel and destination node is connected to the ODU, in SDON controller
Without instantiating multiple nodes, topology is simplified, convenient for management, also improves the efficiency of ethernet link foundation.
According to another aspect of the present invention, a kind of controller is proposed, comprising: request module is used for acquisition request
The ethernet link that ethernet link is established in P-OTN network establishes request, and it includes source node that ethernet link, which establishes request,
Mark and destination node mark；ODU connection establishment module is established from source node to mesh for establishing request according to ethernet link
Node ODU connection；Ethernet link generation module, for being connected to transmission channel in source node and purpose section with ODU
The ethernet link of transmitting grouped data is established between point.
Optionally, if source node and destination node are located at same domain, controller is single domain controller: request module
Ethernet is established in P-OTN network for obtaining the request from controller management personnel, multiple domain controller or service node
The ethernet link of link establishes request；ODU connection establishment module is used to establish request according to ethernet link to establish from source and save
Point arrives the ODU connection of destination node；Ethernet link generation module, for ODU be connected to transmission channel source node with
Virtual ethernet link is established between destination node, the packet data from source node is sent to destination node through ODU connection.
Optionally, if source node and destination node are located at not same area, controller is multiple domain controller: request module
The Ethernet of ethernet link is established for obtaining the request from controller management personnel or service node in P-OTN network
Request for building link；ODU connection establishment module includes: segmentation connection acquisition unit, for the road from source node to destination node
The single domain controller of the diameter domain of dependence obtains segmentation ODU connection；Segmentation connection concatenation unit, is spliced into for that will be segmented ODU connection
ODU connection；Ethernet link generation module establishes void for being connected to transmission channel with ODU between source node and destination node
Quasi- ethernet link, the packet data from source node are sent to destination node through ODU connection.
Optionally, segmentation connection acquisition unit includes: that segmentation connection request generates subelement, for according to ethernet link
It establishes request and executes end-to-end routing, determine the path domain of dependence from source node to destination node, generate segmentation ODU connection and establish
Request, it includes that single domain source node identification and single domain destination node identify that request is established in segmentation ODU connection；Connection request is segmented to send
Subelement is separately sent to corresponding single domain controller for that will be segmented ODU connection foundation request；It is single that segmentation connection obtains son
Member, for obtaining the segmentation ODU connection from single domain source node to single domain destination node from single domain controller.
Optionally, further includes: Ethernet Topology g eneration module, for generating ether according to a plurality of ethernet link of foundation
Net topology, every ethernet link in ether net topology are connected to transmission channel with corresponding ODU；Packet routing mould
Block, for determining the transmission path of packet data according to ether net topology.
Optionally, further includes: residual resource information obtains module, for obtaining the remaining link circuit resource in P-OTN network
Information, comprising: resource occupation information acquisition unit, for obtaining the resource occupation information of the ODU connection in P-OTN network；It is surplus
Remaining resource information determination unit, the resource occupation information for being connected according to ODU, based on the object between the node in P-OTN network
It manages link resource information and determines remaining link resource information；ODU connection establishment module is used for based on the remaining chain in P-OTN network
Road resource information establishes ODU connection of the request generation from source node to destination node according to ethernet link.
Optionally, source node includes: the node with packet circuit side plate card and/or the section with joint line side plate card
Point.
Optionally, destination node includes: node with packet circuit side plate card and/or with joint line side plate card
Node.
Optionally, ethernet link supports Ethernet Private Line business and/or Ethernet virtual private line service.
Optionally, it further includes capacity requirement that ethernet link, which establishes request,；ODU connection meets capacity requirement to ensure ether
Network chain road meets capacity requirement.
Such controller control P-OTN network in ethernet link establish when, can first establish from source node to mesh
Node ODU connection, regeneration is connected to ether network chain between the source node of transmission channel and destination node with the ODU
Road simplifies topology, convenient for management, also improves ethernet link foundation in the controller without instantiating multiple nodes
Efficiency.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, this hair
Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is P-OTN functions of the equipments schematic diagram in the prior art.
Fig. 2 is SDON grid of reference schematic diagram.
Fig. 3 is the flow chart of one embodiment of ethernet link method for building up of the invention.
Fig. 4 is the flow chart of another embodiment of ethernet link method for building up of the invention.
Fig. 5 is the flow chart of another embodiment of ethernet link method for building up of the invention.
Fig. 6 is the implementation that multiple domain controller obtains segmentation ODU connection in ethernet link method for building up of the invention
The flow chart of example.
Fig. 7 is one embodiment that ethernet link method for building up of the invention generates ODU layers and ethernet layer mapping
Schematic diagram.
Fig. 8 be in ethernet link method for building up of the invention not between the node of same area ethernet link method for building up one
The schematic diagram of a embodiment.
Fig. 9 is the flow chart that one embodiment of ODU connection is generated in ethernet link method for building up of the invention.
Figure 10 is to be connected to the network schematic diagram using the P-OTN of ODU line card and grouping line card.
Figure 11 is the P-OTN network connection schematic diagram using mixing line card.
Figure 12 is the schematic diagram of one embodiment of controller of the invention.
Figure 13 is the schematic diagram of another embodiment of controller of the invention.
Figure 14 is that controller of the invention is one embodiment that connection acquisition unit is segmented in the case where multiple domain controller
Schematic diagram.
Figure 15 is the schematic diagram of another embodiment of controller of the invention.
Figure 16 is the schematic diagram of the further embodiment of controller of the invention.
Specific embodiment
Below by drawings and examples, technical scheme of the present invention will be described in further detail.
In P-OTN network, P-OTN equipment has ODU intersection and packet switched capabilities simultaneously, utilizes equipment room
OTN link can be realized the transmission of packet data.For convenience of the route processing of Packet Service, ODU company can be reserved between node
Resource is connect as the ethernet link between node, for the transmission of Packet Service, SDON controller can store and utilize by with
The topology information that too network chain road is formed calculates the routing iinformation of Packet Service.
The flow chart of one embodiment of ethernet link method for building up of the invention is as shown in Figure 3.
In step 301, SDON network-based control device acquisition request establishes the ether of ethernet link in P-OTN network
Net request for building link.It includes that source node identification and destination node identify that ethernet link, which is established in request,.The ethernet link
Establishing request can come from upper level controller, such as multiple domain controller；It can also be by the node in data communication network because of business
Excitation generates and uploads to controller, and P-OTN network is made to have adaptivity；It can also be by control administrative staff in controller end
Configuration generates, and network operation personnel can manually establish according to traffic forecast and the network planning, improves managing for P-OTN network
Controllability.
In step 302, controller is established the ODU that request is established from source node to destination node according to ethernet link and is connected
It connects.In one embodiment, it can also include capacity requirement that ethernet link, which establishes request, and controller is generated according to capacity requirement
The ODU connection of corresponding bandwidth.
In step 303, controller is connected to transmission channel with ODU and establishes Ethernet between source node and destination node
Link is to support transmission of the packet data from source node to destination node.In the ether net topology of controller storage, it can incite somebody to action
Source node is direct-connected with destination node, and when needing the transmitting grouped data between source node and destination node, data communication network is logical
Corresponding ODU connection transmitting grouped data is crossed, in one embodiment, the ethernet link of foundation can carry Ethernet Private Line
And Ethernet virtual private line service.
By such method, the ODU connection from source node to destination node can be first established in P-OTN network, then
It generates and the ethernet link between the source node of transmission channel and destination node is connected to the ODU, be not necessarily in the controller
Multiple nodes are instantiated, topology is simplified, convenient for management, also improve the efficiency of ethernet link foundation.
In one embodiment, the source node and destination node that ethernet link is established in request are located in same domain, by
Same single domain controller control, then the flow chart of one embodiment of ethernet link method for building up is as shown in Figure 4.
In step 401, single domain controller receives the ethernet link that ethernet link is established in request in P-OTN network
Establish request.Ethernet link establishes request can be sent to single domain controller by multiple domain controller, can also be by data communication
Node in network is excited by business generates and uploads to controller, can also be configured and be given birth in controller end by control administrative staff
At.It includes that source node identification and destination node identify that ethernet link, which is established in request,.
In step 402, single domain controller is established request according to ethernet link and is established from source node to destination node
ODU connection.In one embodiment, ethernet link, which establishes request, to include capacity requirement, and controller is according to capacity need
Seek survival into the ODU connection of corresponding bandwidth.
In step 403, single domain controller with ODU be connected to transmission channel established between source node and destination node with
Too network chain road is to support transmission of the packet data from source node to destination node.It, can in the ether net topology of controller storage
With source node is direct-connected with destination node, when needing the transmitting grouped data between source node and destination node, data communication network
Network passes through corresponding ODU connection transmitting grouped data.
By such method, single domain controller can generate the ethernet link between this domain interior nodes, thus in domain
When packet data transmission, route processing can be executed according to the ethernet link of foundation, ether is utilized in data communication network
The transmission of packet data is realized in the corresponding ODU connection in network chain road, facilitates single domain controller to the control of domain interior nodes, improve with
Efficiency is established on too network chain road.
In one embodiment, the related news that ethernet link is established can be realized by the transmission API based on ONF
Transmission.Multiple domain controller can send ethernet link to single domain controller and establish request, and request controls model in single domain controller
Ethernet link is established between two nodes in enclosing.The critical field that ethernet link is established in request can be as shown in table 1:
| Field | Annotation |
| Connection.ConnectionType | Connection type |
| Connection.ServiceType | Type of service=ODUETHLINK |
| Connection.ConnectionDirection | Connect direction |
| Connection.Capacity | Capacity |
| Connection.ConnectionPortList | Connectivity port |
| Connection.layerProtocolName | Layer protocol title=ODU |
| Connection.parentNodeRef | Father node reference |
| Connection.Connection_Signal_type | Connection signal type=ODU0 |
| Connection.protectionType | Type is protected, unprotect is defaulted as |
| Connection.RoutingConstraints | Route restriction condition |
1 ethernet link of table establishes request critical field information
The creation of single domain controller from source node to destination node between ODU connection, while being automatically performed the ODU connection and two
The association of a Ethernet endpoint, and to multiple domain controller return connection establish as a result, and generate ethernet link and ether
Net endpoint, wherein the ethernet link reported to multiple domain controller generates notice and may include:
The Ethernet endpoint that single domain controller is reported to multiple domain controller generates notice
Above-mentioned Notification message attributes include:
2 Notification " message attributes of table
By such method, when single domain controller is receiving the ethernet link foundation request from multiple domain controller
Afterwards, the ODU connection between creation is from source node to destination node, while being automatically performed the ODU connection and two Ethernet endpoints
Association, and the ethernet link and Ethernet endpoint that result and generation are established in connection are returned to multiple domain controller, so as to
It is realized in the case where uninstantiated multiple nodes in the controller and establishes ethernet link, simplify topology, convenient for management, also mentioned
The efficiency that high ethernet link is established.
In one embodiment, the source node and destination node that ethernet link is established in request can be located at not same area,
It is controlled respectively by respective single domain controller, cross-domain control is realized by multiple domain controller, then the one of ethernet link method for building up
The flow chart of a embodiment is as shown in Figure 5.
In step 501, multiple domain controller acquisition request establishes the ethernet link of ethernet link in P-OTN network
Establish request.Ethernet link establishes request and can excite generation by business by the node in data communication network and upload to control
Device processed can also be configured in controller end by control administrative staff and be generated.It includes source node mark in request that ethernet link, which is established,
Know and destination node identifies.
In step 502, the single domain controller of the path domain of dependence of the multiple domain controller from source node to destination node obtains
It is segmented ODU connection, segmentation ODU connection is spliced into ODU connection.In one embodiment, multiple domain controller can first carry out end
To end router-level topology, the Segment routing in multiple domains is split into, and determines the node of interaction between domain, Xiang Xiangguan domain request establishes segmentation
ODU connection.In one embodiment, multiple domain controller obtains flow chart such as Fig. 6 of one embodiment of the process of Segment routing
It is shown:
In step 601, multiple domain controller establishes the source node identification and destination node in request according to ethernet link
Mark executes end-to-end router-level topology, determines that source node arrives the domain of dependence in the path of destination node, and generates and be segmented ODU connection and build
Vertical request.In one embodiment, multiple domain controller can be according to the residue in the data communication network topology and network of storage
Resource situation executes end-to-end router-level topology, and determines the node of interaction between domain.In one embodiment, segmentation ODU connection is built
It include that single domain source node identification and single domain destination node identify in vertical request, single domain controller can be established according to segmentation ODU connection
The segmentation ODU connection from single domain source node to single domain destination node is established in request.
In step 602, the segmentation ODU connection of generation is established the single domain that request is sent to corresponding single domain by multiple domain controller
Controller.Single domain controller can generate segmentation ODU connection.
In step 603, single domain controller is by the segmentation ODU connection slave single domain source node to single domain destination node of generation
It is reported to multiple domain controller.
By such method, multiple domain controller can obtain segmentation ODU connection from each single domain controller, in order to more
Domain controller generates the ODU connection from source node to destination node.
In step 503, multiple domain controller with ODU be connected to transmission channel established between source node and destination node with
Too network chain road is to support transmission of the packet data from source node to destination node.In the ether net topology of multiple domain controller storage
In, it can be direct-connected with destination node by source node, when needing to transmit data between source node and destination node, data communication network
Network passes through corresponding ODU connection transmitting grouped data.
By such method, when source node and destination node are located at not same area, multiple domain controller can utilize single domain
The segmentation ODU connection splicing that controller provides generates ODU connection, generates between cross-domain source node and destination node and is connected with ODU
It is connected in the ethernet link of transmission channel, to can hold according to the ethernet link of foundation in cross-domain packet data transmission
Row route processing realizes the transmission of packet data in data communication network using the corresponding ODU connection of ethernet link, convenient
The router-level topology of cross-domain Packet Service, and improve ethernet link establishes efficiency.In extensive optical transport network, due to
The emulative reason of network management or producer, the scene of multiple domain networking certainly exist.By using this method, can satisfy
When transmission net carries out multiple domain networking using stratification controller architecture, meets the needs of business end-to-end protection.
P-OTN equipment ethernet layer in the controller and ODU layers of mapping in ethernet link method for building up of the invention
One embodiment schematic diagram it is as shown in Figure 7.Only need for a P-OTN equipment to be mapped as an ODU exchange section at ODU layers
Point is mapped as an Ethernet exchanging node in ethernet layer.It, can be in the link establishment of controller, connection generating process
It is an OTN endpoint, N number of ODU connection end point and N number of Ethernet endpoint by the OTN interface abstraction of a physics, wherein N value
Size depends on OTN link bandwidth, ODU connection bandwidth, ODU connection three factors of quantity.OTN object can be based in controller end
Reason link is generated ODU connection and is connected to the ethernet link of physical channel with ODU.Controller can be based on OTN physics
Link generates ODU connection topology and ether net topology, as shown in ODU layers in Fig. 7 and ethernet layer.Controller is opened up based on Ethernet
The routing inquiry for executing Packet Service is flutterred, after determining Ethernet path, is connected to P-OTN using the corresponding ODU of ethernet link
Equipment room transmitting grouped data.
By such method, controller can generate ethernet layer topology on P-OTN cellular logic and ODU layers are opened up
It flutters, consequently facilitating carrying out router-level topology to business, improves to P-OTN network-based control ability, the efficiency of improve data transfer
And controllability.It is real since each P-OTN physical equipment is abstracted as an ODU switching node and an Ethernet exchanging node
Exampleization number of nodes is few, and Topology Management operation, amount of storage are small.
One embodiment of ethernet link method for building up shows between ethernet link method for building up interior joint of the invention
It is intended to as shown in Figure 8.
In one embodiment, ethernet link is if desired established between node A1 and node A4, then A domain controller is connected to
After ethernet link establishes request, A1 node is established to the ODU connection between A4 node.A domain controller A1 node abstraction go out with
Too net endpoint 02 goes out Ethernet endpoint 04 in A4 node abstraction, to establish Ethernet using the ODU connection between A1 and A4 node
Ethernet link between endpoint 02 and Ethernet 04.In the ethernet layer topology that A domain controller generates, A1 node and A4 node
It is connect by Ethernet endpoint 02 with Ethernet endpoint 04；When packet data is sent to A4 node from A1 node, using A1 with
ODU connection between A4 node carries out data transmission.
By such method, when source node and destination node are located at same domain, the single domain controller in node-home domain
ODU connection and the ethernet link from source node to destination node can be generated, which is connected to transmission with ODU
Packet data transmission is realized using OTN physical link in channel.
In one embodiment, multiple domain controller receives ethernet link and establishes request, and source node is node A1, purpose section
Point is node B4.Multiple domain controller calculates end-to-end routing, and is split as the Segment routing in the domain A and the domain B, generates segmentation ODU and connects
Connect foundation request.Being segmented ODU connection and establishing in request includes that single domain source node identification and single domain destination node identify.Multiple domain control
The segmentation ODU that segmentation ODU connection is established in the domain A is established request and is sent to A domain controller by device；Segmentation will be established in the domain B
The segmentation ODU of ODU connection establishes request and is sent to B domain controller.A domain controller establishes segmentation ODU connection 1, and in segmentation ODU
The virtual Ethernet endpoint 24 positioned at node A1 is automatically generated on the basis of connection 1, then will be segmented ODU connection 1 and is located at section
The Ethernet endpoint 24 of point A1 feeds back to multiple domain controller；B domain controller is completed to establish segmentation ODU connection 2, and in segmentation ODU
The virtual Ethernet endpoint 26 positioned at node B4 is automatically generated on the basis of connection 2, then will be segmented ODU connection 2 and is located at section
The Ethernet endpoint 26 of point B4 feeds back to multiple domain controller.Multiple domain controller will be segmented ODU connection 1 and connect 2 splicings with segmentation ODU
Get up to be formed ODU connection 3, and generates ethernet link between virtual Ethernet endpoint 24 and Ethernet endpoint 26, it should be with
Too network chain road is using ODU connection 3 as transmission channel.In one embodiment, if multiple domain controller is torn open when calculating end-to-end routing
It is divided into the Segment routing in the domain A, the domain C and the domain B, then request is established in multiple domain controller generation segmentation ODU connection, and A domain controller will divide
Section ODU connection 1 and multiple domain controller is fed back to positioned at the Ethernet endpoint 24 of node A1；B domain controller will be segmented ODU connection 2
Multiple domain controller is fed back to the Ethernet endpoint 26 positioned at node B4；C domain controller feeds back to multiple domain for ODU connection 3 is segmented
Controller；Multiple domain controller splicing segmentation ODU connection 1,3 and 2, generates from A1 node to the ODU of B4 node connection 4, and in void
Ethernet link is generated between quasi- Ethernet endpoint 24 and Ethernet endpoint 26, the ethernet link is using ODU connection 4 as biography
Defeated channel.
By such method, when source node and destination node are located at not same area, multiple domain controller can be controlled from single domain
Device obtains segmentation ODU connection, and the ODU connection from source node to destination node is obtained in such a way that ODU connection is spliced.Multiple domain
Controller generates the ethernet link that transmission channel is connected to ODU, realizes packet data transmission using OTN physical link.
The flow chart that one embodiment of ODU connection is generated in ethernet link method for building up of the invention is as shown in Figure 9.
In step 901, controller obtains the resource occupation information of ODU connection in P-OTN network.Controller is generating
The resource occupation information of real-time statistics ODU connection when ODU connection can also be inquired with predetermined time interval and ODU company is calculated
The resource occupation information connect.
In step 902, controller is according to the physical link between the resource occupation information and OTN link nodes of ODU connection
Resource information determines remaining link resource information.In one embodiment, the physical link resource between every two node can be used
Resource occupation amount is subtracted, remaining link resource information is obtained.
In step 903, when controller, which receives ethernet link, establishes request, based on remaining link resource occupation information
Generate the ODU connection from source node to destination node.The ODU connection of generation will meet the capacity that ethernet link is established in request
Demand.
By such method, controller can obtain the surplus resources occupied information in physical topology, based on remaining money
The ODU connection that source occupied information generates can guarantee that link is unimpeded, guarantee data transmission quality, improve user experience.
P-OTN equipment supports following three types of line-side interface in the processing mode of mode two in the background technology
(i.e. line side board, abbreviation line card):
1) ODU line card: ODU business is only supported, for connecting ODU node.
2) it is grouped line card: only supporting the Ethernet service (ETH over ODU) based on ODU connection, for connecting ETH section
Point, centre can pass through ODU switching node.The source node and destination node that ethernet link is established in request can be with grouping
The node of line card.
3) line card is mixed: while supporting ODU and Ethernet service.Ethernet link establishes source node and purpose in request
Node can be the node with mixing line card.In one embodiment, source node and destination node can be different types of
Node, if source node is the node with grouping line card, destination node is the node etc. with mixing line card.
Can be as shown in Figure 10 using the P-OTN network connection schematic diagram of ODU line card and grouping line card, the point of grey in figure
To be grouped line card, the point of black is ODU line card.
When using line card is mixed, as shown in figure 11, only need an OTN link can between two P-OTN equipment
Realize various connection relationships as shown in Figure 10.In one embodiment, a mixing line card physical interface can be abstracted
For ODU interface and packet interface, for example, as needed, a mixing line card physical interface can be abstracted as 2 ODU interfaces
With 2 packet interfaces；One OTN physical link (such as OTU2 10Gb/s link) can be abstracted into 4 logical links；Four are patrolled
Collecting link may include the logical links between ODU interface, between packet interface and between ODU interface and packet interface.Often
The maximum bandwidth of logical links is equal to the maximum bandwidth of physical link, and logical links total bandwidth is equal to the maximum of physical link
Bandwidth.After establishing an ODU connection in a logical links, the time interval resource for updating 4 logical links simultaneously is needed to account for
With situation, the occupancy situation of the time interval resource can be from single domain controller to multiple domain controller active reporting.Controller according to when
Gap occupation condition determines remaining link resource information, and the generation of ODU connection is carried out on the basis of remaining link circuit resource.
Using the above method, the ODU interface and packet interface for being abstracted into logic by that will mix line card can be by blends
Card, ODU line card and grouping line card use identical Topology Discovery and business Establishing process.And it can on-demand flexible allocation Packet Service
The link circuit resource occupied with ODU business, is conducive to the unified implementation that ethernet link of the invention is established, improvement method it is pervasive
Property.
The schematic diagram of one embodiment of the controller of SDON of the invention is as shown in figure 12.1201 energy of request module
The ethernet link that enough acquisition requests establish ethernet link in P-OTN network establishes request.Ethernet link establishes request
In include that source node identification and destination node identify.The ethernet link, which establishes request, can come from upper level controller, such as more
Domain controller can also be excited by business by the node in data communication network and generate and upload to controller, can also be by controlling
Administrative staff processed configure in controller end and generate.ODU connection establishment module 1202 can establish request according to ethernet link and build
The vertical ODU connection from source node to destination node.In one embodiment, it can also include capacity that ethernet link, which establishes request,
Demand, controller generate the ODU connection of corresponding bandwidth according to capacity requirement.Ethernet link generation module 1203 is used for ODU
It is connected to transmission channel and establishes ethernet link between source node and destination node to support packet data from source node to mesh
Node transmission., can be direct-connected with destination node by source node in the ether net topology of controller storage, when needs are in source
When transmitting data between node and destination node, data communication network passes through corresponding ODU connection transmitting grouped data.
Such controller control P-OTN network in ethernet link establish when, can first establish from source node to mesh
Node ODU connection, regeneration is connected to ether network chain between the source node of transmission channel and destination node with the ODU
Road simplifies topology, convenient for management, also improves ethernet link foundation in the controller without instantiating multiple nodes
Efficiency.
In one embodiment, the source node and destination node that ethernet link is established in request are located in same domain, by
Same single domain controller control, then controller shown in Figure 12 is single domain controller.Request module 1201 can be received and be asked
The ethernet link for establishing ethernet link in P-OTN network is asked to establish request.Ethernet link establishes request can be by more
Domain controller is sent to single domain controller, can also be excited by the node in data communication network by business and generate and upload to control
Device processed can also be configured in controller end by control administrative staff and be generated.It includes source node mark in request that ethernet link, which is established,
Know and destination node identifies.ODU connection establishment module 1202 can according to ethernet link establish request establish from source node to
The ODU connection of destination node.In one embodiment, it can also include capacity requirement, controller that ethernet link, which establishes request,
The ODU connection of corresponding bandwidth is generated according to capacity requirement.Ethernet link generation module 1203 is used to be connected to transmission with ODU
Ethernet link is established between source node and destination node to support transmission of the packet data from source node to destination node in channel.
, can be direct-connected with destination node by source node in the ether net topology of controller storage, when needs are in source node and purpose section
Between point when transmitting grouped data, data communication network passes through corresponding ODU connection transmitting grouped data.
Such single domain controller can generate the ethernet link between this domain interior nodes, so that packet data passes in domain
When defeated, route processing can be executed according to the ethernet link of foundation, it is corresponding using ethernet link in data communication network
ODU connection realize packet data transmission, facilitate single domain controller to improve ethernet link to the control of domain interior nodes
Establish efficiency.
In one embodiment, the source node and destination node that ethernet link is established in request can be located at not same area,
It is controlled respectively by respective single domain controller, cross-domain control is realized by multiple domain controller.As shown in figure 13, controller of the invention
For multiple domain controller.Wherein, request module 131 can acquisition request established in P-OTN network ethernet link with
Too net request for building link.Ethernet link is established request and can be generated simultaneously by the node in data communication network by business excitation
Controller is uploaded to, can also be configured and be generated in controller end by control administrative staff.Ethernet link is established in request
Source node identification and destination node mark.ODU connection establishment module 132 being capable of the path domain of dependence from source node to destination node
Single domain controller obtain segmentation ODU connection, will be segmented ODU connection be spliced into ODU connection.ODU connection establishment module 132 can be with
Including segmentation connection acquisition unit 1321 and segmentation connection concatenation unit 1322.Connection acquisition unit 1321 is segmented to be used for from single domain
Controller obtains segmentation ODU connection, and segmentation connection concatenation unit 1322 is spliced into ODU connection for that will be segmented ODU connection, thus
Obtain the complete ODU connection from source node to destination node.Ethernet link generation module 133 can be connected to ODU
Transmission channel establishes ethernet link to support packet data from source node to destination node between source node and destination node
Transmission., can be direct-connected with destination node by source node in the ether net topology of multiple domain controller storage, when needs are in source node
Between destination node when transmitting grouped data, data communication network passes through corresponding ODU connection transmitting grouped data.
Such multiple domain controller can be provided when source node and destination node are located at not same area using single domain controller
Segmentation ODU connection splicing generate ODU connection, between cross-domain source node and destination node generate with ODU be connected as transmission lead to
The ethernet link in road, so that route processing can be executed according to the ethernet link of foundation in cross-domain packet data transmission,
The transmission for realizing packet data using the corresponding ODU connection of ethernet link in data communication network, facilitates cross-domain grouping industry
The router-level topology of business, and improve ethernet link establishes efficiency.
In one embodiment, as shown in figure 13, it includes that segmentation connection request generates that ODU, which is segmented connection acquisition unit 1321,
Subelement 1421, segmentation connection request transmission sub-unit 1422 and segmentation connection obtain subelement 1423.Wherein, segmentation connection is asked
It seeks survival into source node identification and destination node of the subelement 1421 for being established in request according to ethernet link and identifies actuating station
To end router-level topology, determine source node arrive the path of destination node the domain of dependence, and generate segmentation ODU connection foundation request.?
In one embodiment, segmentation connection request generate subelement 1421 can according to multiple domain controller store data network topology and
Surplus resources situation in network executes end-to-end router-level topology, and determines the node of interaction between domain.In one embodiment, divide
It includes that single domain source node identification and single domain destination node identify that section ODU connection, which is established in request, and single domain controller can be according to segmentation
Segmentation ODU connection of the request foundation from single domain source node to single domain destination node is established in ODU connection.It is segmented connection request and sends son
Unit 1422 is used for the single domain controller that the segmentation ODU connection that will generate is sent to corresponding single domain, single domain controller can generate from
Segmentation ODU connection of the single domain source node to single domain destination node.Segmentation connection obtains subelement 1423 for obtaining single domain control
The segmentation ODU connection that device reports.
Such multiple domain controller can obtain segmentation ODU connection from each single domain controller, in order to multiple domain controller
Generate the ODU connection from source node to destination node.
The schematic diagram of another embodiment of controller of the invention is as shown in figure 15.Wherein, request module 1501,
ODU connection establishment module 1502 and the structure and function of ethernet link generation module 1503 are similar to the embodiment of Figure 12.
Controller further includes Ethernet Topology g eneration module 1504 and packet routing module 1505.Wherein, Ethernet Topology g eneration
The ethernet link that module 1504 can be established according to ethernet link generation module 1503 generates ether net topology, and Ethernet is opened up
Every ethernet link in flutterring is connected to transmission channel with corresponding ODU.Divide when needing to transmit in data communication network
When group data, packet routing module 1505 is determined according to the ether net topology that Ethernet Topology g eneration module 1504 generates divides
The transmission path of group data improves the efficiency of route processing to realize the quick planning in path when packet data transmission,
Improve user experience.
The schematic diagram of the further embodiment of controller of the invention is as shown in figure 16.Wherein, request module 1601,
ODU connection establishment module 1602 and the structure and function of ethernet link generation module 1603 and phase in embodiment shown in Figure 12
Seemingly.Controller further includes that residual resource information obtains module 1604, is connected with ODU connection establishment module 1602, can obtain P-
The resource occupation information of ODU connection in OTN network, and according to the object between the resource occupation information and OTN link nodes of ODU connection
Reason link resource information determines that remaining link resource information e.g. can subtract money with the physical link resource between every two node
Source occupancy obtains remaining link resource information.It may include that resource occupation information obtains that residual resource information, which obtains module 1604,
Take unit and residual resource information determination unit, wherein resource occupation information acquisition unit is for obtaining in P-OTN network
The resource occupation information of ODU connection；Residual resource information determination unit can be based on according to the resource occupation information of ODU connection
Physical link resource information between node in P-OTN network determines remaining link resource information.When request module 1601
When receiving ethernet link foundation request, ODU connection establishment module 1602 is based on residual resource information and obtains the acquisition of module 1604
Remaining link resource occupation information generate ODU connection from source node to destination node.Ethernet link generation module 1603
Transmission channel, which is connected to, with ODU establishes ethernet link between source node and destination node to support packet data from source node
To the transmission of destination node.
Such controller can obtain the surplus resources occupied information in physical topology, be based on surplus resources occupied information
The ODU connection of generation can guarantee that link is unimpeded, guarantee data transmission quality, improve user experience.
Finally it should be noted that: the above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof；To the greatest extent
The present invention is described in detail with reference to preferred embodiments for pipe, it should be understood by those ordinary skilled in the art that: still
It can modify to a specific embodiment of the invention or some technical features can be equivalently replaced；Without departing from this hair
The spirit of bright technical solution should all cover within the scope of the technical scheme claimed by the invention.
Claims (14)
1. a kind of ethernet link generation method characterized by comprising
The ethernet link that controller acquisition request establishes ethernet link in being grouped enhanced optical-fiber network P-OTN network is established
Request, it includes that source node identification and destination node identify that the ethernet link, which establishes request,；
The controller establishes optical channel data sheet of the request foundation from source node to destination node according to the ethernet link
First ODU connection；
The controller is connected to transmission channel with the ODU and establishes transmission point between the source node and the destination node
The ethernet link of group data；
The controller generates ether net topology according to the ethernet link of foundation, every institute in the ether net topology
It states ethernet link and transmission channel is connected to corresponding ODU；
The controller determines the transmission path of packet data according to the ether net topology.
2. the method according to claim 1, wherein
If the source node and the destination node are located at same domain,
It includes: list that the ethernet link that the controller acquisition request establishes ethernet link in P-OTN network, which establishes request,
Domain controller obtain the request from controller management personnel, multiple domain controller or service node established in P-OTN network with
Too the ethernet link on network chain road establishes request；
The controller establishes the ODU connection that request is established from source node to destination node according to the ethernet link
The single domain controller establishes ODU connection of the request foundation from source node to destination node according to the ethernet link；
The controller is connected to transmission channel with the ODU and establishes transmission point between the source node and the destination node
The ethernet link of group data include: the single domain controller with the ODU be connected to transmission channel the source node with
Virtual ethernet link is established between the destination node, the packet data from the source node is sent through the ODU connection
To the destination node.
3. according to the method described in claim 2, it is characterized in that,
If the source node and the destination node are located at not same area,
It includes: more that the ethernet link that the controller acquisition request establishes ethernet link in P-OTN network, which establishes request,
Domain controller obtain the request from controller management personnel or service node established in P-OTN network ethernet link with
Too net request for building link；
The controller establishes the ODU connection that request is established from source node to destination node according to the ethernet link
The single domain controller of the path domain of dependence of the multiple domain controller from the source node to the destination node obtains segmentation ODU and connects
It connects, the segmentation ODU connection is spliced into the ODU connection；
The controller is connected to transmission channel with the ODU and establishes transmission point between the source node and the destination node
The ethernet link of group data include: the multiple domain controller with the ODU be connected to transmission channel the source node with
Virtual ethernet link is established between the destination node, the packet data from the source node is sent through the ODU connection
To the destination node.
4. according to the method described in claim 3, it is characterized in that,
The single domain controller of the path domain of dependence of the multiple domain controller from the source node to the destination node obtains segmentation
ODU connection includes:
The multiple domain controller establishes request according to the ethernet link and executes end-to-end routing, determine from the source node to
The path domain of dependence of the destination node generates segmentation ODU connection and establishes request, and the segmentation ODU connection establishes request and includes
Single domain source node identification and single domain destination node mark；
The segmentation ODU connection is established request and is separately sent to the corresponding single domain controller by the multiple domain controller；
The segmentation ODU that the single domain controller establishes from single domain source node to single domain destination node is connected and is reported the multiple domain control
Device processed.
5. the method according to claim 1, wherein
Further include:
The controller obtains the remaining link resource information in the P-OTN network, comprising:
The controller obtains the resource occupation information of the ODU connection in the P-OTN network；
The controller is according to the resource occupation information of the ODU connection, based between the node in the P-OTN network
Physical link resource information determines the remaining link resource information；
The controller establishes the ODU connection that request is established from source node to destination node according to the ethernet link
The controller please be sought survival based on the remaining link resource information in the P-OTN network according to ethernet link foundation
At the ODU connection from source node to destination node.
6. the method according to claim 1, wherein
The source node includes: the node with packet circuit side plate card and/or the node with joint line side plate card；With/
Or,
The destination node includes: the node with packet circuit side plate card and/or the node with joint line side plate card.
7. the method according to claim 1, wherein
The ethernet link supports Ethernet Private Line business and/or Ethernet virtual private line service；
And/or
It further includes capacity requirement that the ethernet link, which establishes request,；The ODU connection meets the capacity requirement to ensure
It states ethernet link and meets the capacity requirement.
8. a kind of controller characterized by comprising
Request module, established in being grouped enhanced optical-fiber network P-OTN network for acquisition request ethernet link with
Too net request for building link, it includes that source node identification and destination node identify that the ethernet link, which establishes request,；
Optical Channel Data Unit-k ODU connection establishment module is established for establishing request according to the ethernet link from source node
To the ODU connection of destination node；
Ethernet link generation module, for being connected to transmission channel in the source node and the purpose section with the ODU
The ethernet link of transmitting grouped data is established between point；
Ethernet Topology g eneration module, for generating ether net topology, the Ethernet according to the ethernet link of foundation
Every ethernet link in topology is connected to transmission channel with corresponding ODU；
Packet routing module, for determining the transmission path of packet data according to the ether net topology.
9. controller according to claim 8, which is characterized in that
If the source node and the destination node are located at same domain, the controller is single domain controller:
The request module is for obtaining the request from controller management personnel, multiple domain controller or service node in P-
The ethernet link that ethernet link is established in OTN network establishes request；
The ODU connection establishment module is used to establish request according to the ethernet link and establish from source node to destination node
ODU connection；
The ethernet link generation module, for being connected to transmission channel in the source node and the mesh with the ODU
Node between establish virtual ethernet link, the packet data from the source node is sent to described through the ODU connection
Destination node.
10. controller according to claim 8, which is characterized in that
If the source node and the destination node are located at not same area, the controller is multiple domain controller:
The request module is built in P-OTN network for obtaining the request from controller management personnel or service node
The ethernet link of vertical ethernet link establishes request；
The ODU connection establishment module includes:
It is segmented connection acquisition unit, the single domain controller for the path domain of dependence from the source node to the destination node obtains
Take segmentation ODU connection；
Segmentation connection concatenation unit, for the segmentation ODU connection to be spliced into the ODU connection；
The ethernet link generation module is used to be connected to transmission channel in the source node and the purpose with the ODU
Virtual ethernet link is established between node, the packet data from the source node is sent to the mesh through the ODU connection
Node.
11. controller according to claim 10, which is characterized in that
The segmentation connection acquisition unit includes:
It is segmented connection request and generates subelement, execute end-to-end routing for establishing request according to the ethernet link, determine
From the source node to the path domain of dependence of the destination node, generates segmentation ODU connection and establish request, the segmentation ODU connects
Connecing foundation request includes that single domain source node identification and single domain destination node identify；
It is segmented connection request transmission sub-unit, it is corresponding described for segmentation ODU connection foundation request to be separately sent to
Single domain controller；
Segmentation connection obtains subelement, for obtaining point from single domain source node to single domain destination node from the single domain controller
Section ODU connection.
12. controller according to claim 8, which is characterized in that
Further include: residual resource information obtains module, for obtaining the remaining link resource information in the P-OTN network, wraps
It includes: resource occupation information acquisition unit, for obtaining the resource occupation information of the ODU connection in the P-OTN network；
Residual resource information determination unit is based on the P-OTN for the resource occupation information according to the ODU connection
Physical link resource information between node in network determines the remaining link resource information；
The ODU connection establishment module is used for based on the remaining link resource information in the P-OTN network, according to the ether
Net request for building link generates the ODU connection from source node to destination node.
13. controller according to claim 8, which is characterized in that
The source node includes: the node with packet circuit side plate card and/or the node with joint line side plate card；With/
Or,
The destination node includes: the node with packet circuit side plate card and/or the node with joint line side plate card.
14. controller according to claim 8, which is characterized in that
The ethernet link supports Ethernet Private Line business and/or Ethernet virtual private line service；
And/or
It further includes capacity requirement that the ethernet link, which establishes request,；The ODU connection meets the capacity requirement to ensure
It states ethernet link and meets the capacity requirement.
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| CN112511382B (en) * | 2020-11-24 | 2022-03-29 | 中盈优创资讯科技有限公司 | Method and device for creating flexible Ethernet Flexe channel |
| CN114363404A (en) * | 2021-12-29 | 2022-04-15 | 凯通科技股份有限公司 | End-to-end restoring method for Ethernet service under hybrid networking and related equipment |
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