CN109302350A - One kind being based on photoelectricity multicast hybrid network frame structure and its dispatching method - Google Patents
One kind being based on photoelectricity multicast hybrid network frame structure and its dispatching method Download PDFInfo
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- CN109302350A CN109302350A CN201710609953.1A CN201710609953A CN109302350A CN 109302350 A CN109302350 A CN 109302350A CN 201710609953 A CN201710609953 A CN 201710609953A CN 109302350 A CN109302350 A CN 109302350A
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- multicast
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/15—Flow control; Congestion control in relation to multipoint traffic
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/16—Multipoint routing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/50—Queue scheduling
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- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The present invention relates to cast communication fields, more particularly to it is a kind of based on photoelectricity multicast hybrid network frame structure, the structure includes: EPS, OCS, SDN controller, TOR interchanger, server, the TOR interchanger is connect with described EPS, OCS and server, and the SDN controller is connect with the interchanger, the EPS and the OCS.The framework avoids influence of the optical link configuration to multicast data flow, reduces optical link configuration overhead by scheduling multicast data flow seamless between static electric network and dynamic optical network；The framework is integrated with the low-power consumption of light multicast and the direct-connected characteristic of TOR, also has the advantage of electric multicast low switching delay.
Description
Technical field
The present invention relates to the communications fields, more particularly to one kind to be based on photoelectricity multicast hybrid network frame structure and its dispatching party
Method.
Background technique
Multicasting solution currently used for high-performance data center applications mainly includes application layer overlay network and network
Layer multicast.
Application layer overlay network solution accelerates large capacity number by constructing data distribution network on overlay network
According to transmission, in the network, receiving node also assists in the transmission of data, sends down the data newly received to along distribution network
One node.The problem of this method avoid single sending node high loads, accelerates the transmission of multicast packet；But this method
Redundant flow is introduced, and the uneven arrival between node also will affect the performance of data distribution, can not reach optimal
Multicast optimization effect.
Network layer multicast can make source node only send a data, and data are sent to all reception sections along multicast tree
Point.Message is distributed by being replicated more parts when OCS EPS.Traditional ethernet multicast agreement passes through distributed association
Quotient constructs multicast tree, the building of multicast tree and the complex management of multicast member.Avalanche passes through SDN controller management
Multicast group simultaneously constructs multicast tree in core electricity packet switch network.EPS network generallys use tree-network topology, in core
In EPS, unicast stream and multicast data flow are coexisted, and multicast data flow can compete link bandwidth with by the unicast stream on core EPS, to reduce
The handling capacity of multicast data flow and unicast stream increases the transmission time of stream.In order to eliminate the competition of core EPS, someone is utilized respectively OCS
Optical link duplication is carried out, by establishing one between source and destination cabinet top interchanger to more optical links, flux of multicast is migrated
To optical-fiber network.However, optical link needs to distribute to multicast data flow in advance, and is multicast stream and monopolizes, the multicast data flow being not allocated to
It needs to wait available optical link resource, so that the performance of multicast data flow can be reduced.The configuration of OCS needs certain delay, usually
In Millisecond, current solution does not account for the influence of configuration delay, to will affect the performance of multicast data flow.
Summary of the invention
The purpose of the present invention is to provide one kind to be based on photoelectricity multicast hybrid network frame structure and its dispatching method, solves
The problem of multicast optimization effect.
The invention is realized in this way a kind of be based on photoelectricity multicast hybrid network frame structure and its dispatching method, the structure
It include: EPS, OCS, SDN controller, TOR interchanger, server, the TOR interchanger and described EPS, OCS and server
Connection, the SDN controller are connect with the interchanger, the EPS and the OCS.
A further technical solution of the present invention is: the SDN controller includes: using layer plane, control plane and number
According to plane.
A further technical solution of the present invention is: this method comprises: using mixed scheduling strategy, the mixed scheduling plan
It slightly include: greedy link allocation method.
A further technical solution of the present invention is: the mixed scheduling strategy are as follows: when the application layer sense of the SDN controller
When knowing that new multicast data flow reaches, application program is by calling northbound interface explicitly to send request to the network architecture；It receives
After one group of multicast request, the other flow of server level is aggregated into the demand of TOR rank first, then executes greedy optical link point
With algorithm, OCS configuring condition is calculated, finds available optical switch port；When due to needing to occupy one section during configuration OCS
Between, it is first that all multicast data flows construct multicast tree according to EPS network, the TOR interchanger is then handed down to by southbound interface
Routing table, transmit multicast data flow by EPS network, avoid process pause transmission to wait available OCS to provide
OCS configuration is completed in source；After the completion of OCS configuration, calculates new multicast tree and update routing table, optical link will be had been allocated for
Multicast data flow move to OCS network, complete switching multicast data flow seamless in optical-fiber network and electric network.
A further technical solution of the present invention is: the greed link allocation method are as follows: by multicast data flow according to from size of message
It is ranked up from big to small, preferentially meets big size of message multicast data flow.For each multicast data flow, the free time that can be connected is found
Source TOR interchanger and purpose TOR interchanger.If idle interchanger can all members of overlay multicast group, show this
Multicast data flow can be assigned；To reduce power consumption, which uses OCS multicast as far as possible, that is, less EPS port number is selected to cover
Lid multicast group, the algorithm go to all multicast data flows and can be assigned.
The beneficial effects of the present invention are: multiple optical electrical multicast hybrid network frameworks are by institute during optical link configuration
Some multicast data flows are completed when optical link configures in EPS transmission over networks, multicast data flow are switched to OCS transmission over networks；The framework
By scheduling multicast data flow seamless between static electric network and dynamic optical network, optical link configuration is avoided to the shadow of multicast data flow
It rings, reduces optical link configuration overhead；The framework is integrated with the low-power consumption of light multicast and the direct-connected characteristic of TOR, also has electric multicast
The advantage of low switching delay.
Detailed description of the invention
Fig. 1 is provided by the invention a kind of based on photoelectricity multicast hybrid network frame structural schematic diagram；
Fig. 2 is a kind of mixed scheduling plan of dispatching method based on photoelectricity multicast hybrid network frame structure provided by the invention
Flow diagram slightly；
Fig. 3 is a kind of greedy link point of dispatching method based on photoelectricity multicast hybrid network frame structure provided by the invention
The flow diagram of method of completing the square.
Appended drawing reference: 1, SDN controller 2, EPS 3, OCS 4, connecting line 5, TOR interchanger 6, server.
Specific embodiment
Embodiment one: Fig. 1 show it is a kind of based on photoelectricity multicast hybrid network frame structure, the framework by EPS2, OCS3,
SDN controller 1, TOR interchanger 5 and server 6 form；TOR interchanger 5 is connect with EPS2, OCS3 by connecting line 4, simultaneously
Connect multiple servers 6；Wherein OCS2 is equipped with passive optical splitter, and SDN controller 1 manages EPS2 and OCS3.EPS2 and OCS3
Unicast and cast communication are supported simultaneously, and EPS2 realizes that point-to-multipoint communication, OCS3 utilize passive light by carrying out duplication to message
Splitter divides optical signal on a physical layer and supports Optical Multicasting to establish a pair of of multi-connection, and the SDN controller 1 includes to answer
With layer plane, control plane and data plane, control plane maintains attempting for the whole network, including electric interchanger and optical switch
State.Controller by northbound interface from application plane receive multicast requirement matrix, then calculate optical switch configuration and
Routing policy configures optical switch and electric interchanger by southbound interface after the completion of calculating.In order to eliminate optical link handoff delay
Bring influences, the switching multicast data flow that control plane is seamless in optical-fiber network and electric network using mixed scheduling strategy.Meanwhile it controlling
Plane processed, for distributing multicast resource, constructs multicast using the greedy link allocation algorithm of efficient Integrated Light multicast and electric multicast
Tree, to effectively optimize multicast data flow.
Fig. 2 shows a kind of mixed scheduling strategy of dispatching method based on photoelectricity multicast hybrid network frame structure, 1, group
Stream requirement matrix is broadcast to reach；2, multicast requirement matrix changes；3, greedy link allocation algorithm is executed, is distributed for multicast data flow
OCS link；4, after calculating new link distribution, it is initially configured OCS, during configuring OCS, by configuring TOR interchanger
Routing so that multicast data flow in EPS transmission over networks；5, after OCS configuration is completed, by configuring the routing of TOR interchanger,
So that the multicast data flow of the allocated optical link is from EPS network migration to OCS transmission over networks；6, there is the multicast transmitted by OCS
Stream is transmitted.
Fig. 3 shows a kind of greedy link allocation method of dispatching method based on photoelectricity multicast hybrid network frame structure
Flow diagram, the greed link allocation method are as follows: 1, to given multicast data flow requirement matrix and current OCS configuring condition；2,
Data volume size is sent according to multicast data flow, traverses all multicast data flows from big to small；3, for each multicast data flow i, lookup pair
Idle port set and the set of all purposes TOR interchanger overhead dead end on the source TOP interchanger answered；4, all purposes
Whether TOR interchanger idle port intersection of sets collection belongs to the set of source TOR interchanger idle port, if so, entering step
5, if not, return step 3；5, selection can cover the minimal set of the port of all purposes TOR interchanger in multicast data flow i
It is allocated.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (5)
1. one kind be based on photoelectricity multicast hybrid network frame structure, which is characterized in that the structure include: EPS, OCS, SDN controller,
TOR interchanger, server, the TOR interchanger are connect with described EPS, OCS and server, the SDN controller with it is described
Interchanger, the EPS and OCS connection.
2. according to claim 1 a kind of based on photoelectricity multicast hybrid network frame structure, which is characterized in that the SDN control
Device processed includes: using layer plane, control plane and data plane.
3. a kind of dispatching method based on photoelectricity multicast hybrid network frame structure, which is characterized in that this method comprises: using mixed
Scheduling strategy is closed, the mixed scheduling strategy includes: greedy link allocation method.
4. a kind of dispatching method based on photoelectricity multicast hybrid network frame structure according to claim 3, which is characterized in that
The mixed scheduling strategy are as follows: when the application layer of the SDN controller, which perceives new multicast data flow, to be reached, application program passes through
Northbound interface is called explicitly to send request to the network architecture；It is first that server level is other after receiving one group of multicast request
Flow aggregates into the demand of TOR rank, then executes greedy optical link allocation algorithm, calculates OCS configuring condition, finds available
Optical switch port；It is first that all multicast data flows construct according to EPS network due to needing to occupy a period of time during configuration OCS
Then multicast tree is handed down to the routing table of the TOR interchanger by southbound interface, allow multicast data flow by EPS network into
Row transmission avoids process pause transmission to wait available OCS resource or complete OCS configuration；After the completion of OCS configuration, meter
New multicast tree and update routing table, the multicast data flow for having been allocated for optical link moved into OCS network, complete optical-fiber network and
Seamless switching multicast data flow in electric network.
5. a kind of dispatching method based on photoelectricity multicast hybrid network frame structure according to claim 4, which is characterized in that
The greed link allocation method are as follows: multicast data flow is ranked up from big to small according to from size of message, preferentially meets big size of message
Multicast data flow；For each multicast data flow, the idle source TOR interchanger and purpose TOR interchanger that can be connected is found；If empty
Not busy interchanger can all members of overlay multicast group, then show that the multicast data flow can be assigned；To reduce power consumption, the algorithm
OCS multicast is used as far as possible, that is, selects less EPS port number to carry out overlay multicast group, which goes to all multicast data flow energy
It is enough to be assigned.
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Cited By (4)
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| CN113472685A (en) * | 2021-05-27 | 2021-10-01 | 北京邮电大学 | Photoelectric hybrid switching method and device based on QoS flow classification in data center |
| CN113839887A (en) * | 2021-09-18 | 2021-12-24 | 北京邮电大学 | Fault processing method and device for photoelectric hybrid switching network and electronic equipment |
| CN113839886A (en) * | 2021-09-18 | 2021-12-24 | 北京邮电大学 | Fault processing method and device for photoelectric hybrid switching network, electronic equipment and medium |
| CN114584868A (en) * | 2022-02-12 | 2022-06-03 | 国网宁夏电力有限公司电力科学研究院 | Data center photoelectric hybrid switching architecture upgrading method |
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| CN113472685A (en) * | 2021-05-27 | 2021-10-01 | 北京邮电大学 | Photoelectric hybrid switching method and device based on QoS flow classification in data center |
| CN113472685B (en) * | 2021-05-27 | 2023-07-21 | 北京邮电大学 | Photoelectric hybrid switching method and device based on QoS (quality of service) flow classification in data center |
| CN113839887A (en) * | 2021-09-18 | 2021-12-24 | 北京邮电大学 | Fault processing method and device for photoelectric hybrid switching network and electronic equipment |
| CN113839886A (en) * | 2021-09-18 | 2021-12-24 | 北京邮电大学 | Fault processing method and device for photoelectric hybrid switching network, electronic equipment and medium |
| CN114584868A (en) * | 2022-02-12 | 2022-06-03 | 国网宁夏电力有限公司电力科学研究院 | Data center photoelectric hybrid switching architecture upgrading method |
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