CN105072035A - Method and system for generating atomized route of optical transport network - Google Patents
Method and system for generating atomized route of optical transport network Download PDFInfo
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- CN105072035A CN105072035A CN201510535212.4A CN201510535212A CN105072035A CN 105072035 A CN105072035 A CN 105072035A CN 201510535212 A CN201510535212 A CN 201510535212A CN 105072035 A CN105072035 A CN 105072035A
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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
- H04L45/12—Shortest path evaluation
- H04L45/125—Shortest path evaluation based on throughput or bandwidth
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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
- H04L45/02—Topology update or discovery
Abstract
The invention discloses a method and a system for generating an atomized route of an optical transport network. The method comprises the following steps: obtaining physical topological information of the OTN; selecting branch circuit board ports of adjacent network elements, establishing an OTUk physical connection between two ports according to the selected ports, and selecting CTPs and time slots at the two ends of the OTUk physical connection to generate a physical link atomized route; establishing an optical channel and the OTUk physical connection in a matching manner according to a bandwidth supported by the ports of the network elements, taking A and Z network elements of the optical channel and the OTUk physical connection as point objects and the optical channel and the OTUk physical connection as line objects, selecting starting and terminating network elements to generate a route between the starting and terminating network elements, and selecting CTPs and time slots matched with the bandwidth to generate an optical channel atomized route. The method and the system for generating the atomized route of the optical transport network have the advantages that a continuous network topological connection is realized across the manufacturers and across systems, and the route design efficiency is improved.
Description
Technical field
The present invention relates to transmission network management field, particularly relate to a kind of generation method and system of optical transfer network atom route.
Background technology
Along with the development of the OTN communication technology, it is increasing that big customer's transport service opens demand, traditional business is opened and is realized based on producer's webmaster, operator needs to coordinate different local network, different gateway resource when opening business between long distance, cross-system, opening process operation flow is complicated, the cycle of opening is long, management function relative distribution, is unfavorable for that the centralized of business opens and manage.
Current OTN network, according to layering, the management of point territory, lacks across producer, towards service fulfillment ability end to end, mainly has the following disadvantages:
1, service fulfillment height relies on producer's webmaster, and the data relative closure between producer's webmaster, fail to realize sharing, be unfavorable for that the pool of resource utilizes.
When 2, relating to inter-network pipe service fulfillment, business route is dispersed in multiple producers webmaster, and each producer opens scene respectively has the similarities and differences, opens workload large, requires higher to opening personnel's professional ability.
3, after service fulfillment, for same business, different manufacturers webmaster can only embody wherein part route, and cannot associate same business, be unfavorable for maintenance and the accident analysis in business later stage.
4, producer's webmaster is to the closure of inner route search, and the difference in operation between each producer webmaster, equipment plate card property difference, the service fulfillment caused between producer's webmaster in docking situation become very difficult.
5, OTN system topology is mainly chain networking at present, do not form continuous print network topology to connect, especially between the system across manufacturer, route search in service fulfillment process is caused to need to confirm one by one each vendor equipment webmaster, spliced by the route of manually carrying out across manufacturer, routing Design difficulty is high, efficiency is low again.
Summary of the invention
The technical problem to be solved in the present invention is that under multi-vendor, dispersion networking condition, physical topology connects discontinuous, and service fulfillment route search is slow.
According to an aspect of the present invention, propose a kind of generation method of optical transfer network atom route, comprising:
Obtain OTN network physical topology information, described network physical topology information comprise device name type, board type, port support bandwidth and optical cable information, wherein, described board type comprises wiring board, tributary card or light amplification plate, and optical cable information comprises the board port that optical cable two ends connect;
Select the branch line plate port of adjacent network elements, generate the OTUk physical connection between two-port according to selected port;
Select CTP and the time slot at OTUk physical connection two ends, generate physical link atom route;
Optical channel and OTUk physical connection is gone out according to the bandwidth adaptation of network element port support, using A, Z network element of optical channel and OTUk physical connection as an object, using optical channel and OTUk physical connection as line object, initial sum is selected to stop network element, the route generating origin network element and stop between network element, and select and described bandwidth adaptation CTP and time slot, generate optical channel atom route.
Further, if the CTP of the corresponding bandwidth in two ends is that single-stage is multiplexing, select the number of time slots of the common factor relevant atomic route bandwidth of two ends free timeslot, any one available CTP is selected based on time slot, if select less than CTP, then remove a minimum time slot, then add a new time slot and come in select CTP;
If the CTP of the corresponding bandwidth in two ends is multistage multiplexing, select any one multiplexed path as CTP to be selected in the common factor of the corresponding multiplexed path of two ends bandwidth, filter out CTP corresponding to this multiplexed path of two ends and time slot, get the identical and CTP that multiplexed path is identical of two ends time slot as qualified CTP.
Further, if route can not be searched, then create new optical channel and/or OTUk physical connection;
If create OTUk physical connection, then search network is risen to machine room particle size fraction from network element particle size fraction, repeat the generative process of physical link atom route and/or optical channel atom route.
Further, whether by way of machine room in have route can sensible, if cannot be sensible, then carry out jumper connection if analyzing every bar route successively;
Judge whether board type and the port speed of OTUk physical connection two ends network element match, and if so, then can carry out jumper connection connection, otherwise, do not carry out jumper connection connection.
Further, using route minimum for physics jumper connection point as optimum route.
According to a further aspect in the invention, also propose a kind of generation system of optical transfer network atom route, comprising:
Condition dispensing unit, for obtaining OTN network physical topology information, described network physical topology information comprise device name type, board type, port support bandwidth and optical cable information, wherein, described board type comprises wiring board, tributary card or light amplification plate, and optical cable information comprises the board port that optical cable two ends connect;
OTUk physical connection unit, for selecting the branch line plate port of adjacent network elements, generates the OTUk physical connection between two-port according to selected port;
Physical link atom route generation unit, for selecting CTP and the time slot at OTUk physical connection two ends, generates physical link atom route;
Optical channel atom route generation unit, for going out optical channel and OTUk physical connection according to the bandwidth adaptation of network element port support, using A, Z network element of optical channel and OTUk physical connection as an object, using optical channel and OTUk physical connection as line object, initial sum is selected to stop network element, the route generating origin network element and stop between network element, and select and the CTP of described bandwidth adaptation and time slot, generate optical channel atom route.
Further, CTP selects module, if be all that single-stage is multiplexing for the CTP of the corresponding bandwidth in two ends, select the number of time slots of the common factor relevant atomic route bandwidth of two ends free timeslot, any one available CTP is selected based on time slot, if select less than CTP, then remove a minimum time slot, then add a new time slot and come in select CTP; If the CTP of the corresponding bandwidth in two ends is multistage multiplexing, select any one multiplexed path as CTP to be selected in the common factor of the corresponding multiplexed path of two ends bandwidth, filter out CTP corresponding to this multiplexed path of two ends and time slot, get the identical and CTP that multiplexed path is identical of two ends time slot as qualified CTP.
Further, if described condition dispensing unit is used for searching route, then new optical channel and/or OTUk physical connection is created; If create OTUk physical connection, then search network is risen to machine room particle size fraction from network element particle size fraction;
Described physical link atom route generation unit is for repeating the generative process of physical link atom route and/or described optical channel atom route generation unit for repeating the generative process of optical channel atom route.
Further, whether jumper connection unit, having route can be sensible for analyzing every bar route successively, if cannot be sensible, then carrying out jumper connection in machine room; Judge whether board type and the port speed of OTUk physical connection two ends network element match, and if so, then can carry out jumper connection connection, otherwise, do not carry out jumper connection connection.
Further, optimum route selection unit, for using route minimum for physics jumper connection point as optimum route.
Compared with prior art, the present invention is on acquisition OTN network physical topology information basis, by to the analysis of business demand and planning, create OTUk physical connection, and generate physical link atom route and optical channel atom route, provide business directly to carry service path, for service fulfillment provides basis, achieve the contiguous network Topology connection across producer, cross-system, improve routing Design efficiency.
In addition, the present invention, by building the atom route of different rates, achieves flexible allocation and the efficiency utilization of OTN network channel resource.
By referring to the detailed description of accompanying drawing to exemplary embodiment of the present invention, further feature of the present invention and advantage thereof will become clear.
Accompanying drawing explanation
What form a part for specification drawings describes embodiments of the invention, and together with the description for explaining principle of the present invention.
With reference to accompanying drawing, according to detailed description below, clearly the present invention can be understood, wherein:
Fig. 1 is the schematic flow sheet of an embodiment of the generation method of optical transfer network atom route of the present invention.
Fig. 2 is the formation schematic diagram of optical transfer network physical link atom route of the present invention.
Fig. 3 is the formation schematic diagram of optical transfer network optical channel atom route of the present invention.
Fig. 4 is the schematic diagram of a specific embodiment of the generation application of optical transfer network optical channel atom route of the present invention.
Fig. 5 is the structural representation of an embodiment of the generation system of optical transfer network atom route of the present invention.
Embodiment
Various exemplary embodiment of the present invention is described in detail now with reference to accompanying drawing.It should be noted that: unless specifically stated otherwise, otherwise positioned opposite, the numerical expression of the parts of setting forth in these embodiments and step and numerical value do not limit the scope of the invention.
Meanwhile, it should be understood that for convenience of description, the size of the various piece shown in accompanying drawing is not draw according to the proportionate relationship of reality.
Illustrative to the description only actually of at least one exemplary embodiment below, never as any restriction to the present invention and application or use.
May not discuss in detail for the known technology of person of ordinary skill in the relevant, method and apparatus, but in the appropriate case, described technology, method and apparatus should be regarded as a part of authorizing specification.
In all examples with discussing shown here, any occurrence should be construed as merely exemplary, instead of as restriction.Therefore, other example of exemplary embodiment can have different values.
It should be noted that: represent similar terms in similar label and letter accompanying drawing below, therefore, once be defined in an a certain Xiang Yi accompanying drawing, then do not need to be further discussed it in accompanying drawing subsequently.
For making the object, technical solutions and advantages of the present invention clearly understand, below in conjunction with specific embodiment, and with reference to accompanying drawing, the present invention is described in more detail.
Fig. 1 is the schematic flow sheet of an embodiment of the generation method of optical transfer network atom route of the present invention.The method comprises the following steps:
In step 110, obtain OTN network physical topology information.
By obtaining OTN network physical topology information, in succession form OTS (optical transmission section), OMS (optical multiplexing section), OCH (optical channel) layer logical network.Network physical topology information comprise device name type, board type, port support bandwidth and optical cable information, wherein, board type comprises wiring board, tributary card or light amplification plate, the bandwidth that port is supported can be 100G, 40G etc., and optical cable information comprises the board port that optical cable two ends connect.
In step 120, select the branch line plate port of adjacent network elements, generate the OTUk physical connection between two-port according to selected port.
Wherein, wiring board port is network-side port, and tributary card port is user's side business access interface.User selects two ends to support the branch line plate port of OTN pattern, and generates OTUk physical connection according to the port numbers at tributary card/wiring board two ends.
In step 130, select CTP and the time slot at OTUk physical connection two ends, generate physical link atom route.
Wherein, according to the definitions of bandwidth of physical link atom route (LINK-AR), bandwidth (such as 10G, 40G etc.) information needed for service fulfillment, selects CTP and the time slot at OTUk physical connection two ends.CTP, time slot are that the assignment of logical of the forwarding bandwidth that board is supported indicates, and such as one piece of 100G board, then can be divided into 80 time slots.So according to the actual demand (such as 10G) of bandwidth, then select CTP and time slot (such as time slot 1-8).
Atom route is the minimum composition granularity of service fulfillment, comprise LINK-AR, as shown in Figure 2, LINK-AR is two ends is the logical channel based on ODUk particle that OTN interface is formed by physical fiber jumper connection, in the middle of it the jumping fiber of process complete site operation, LINK-AR to be only limitted in same city between website, it is interior interconnected stand.
Atom route also comprises optical channel atom route (ODU-AR), and ODU-AR is that two ends are OTN wiring board physical port and based on the logical channel of ODUk particle, in the middle of it the intersection of process and jumping fiber realized allocation activation and site operation.ODU-AR comprises three kinds of forms as shown in Figure 3, and form 1 is that atom route is merely through single OCH passage.Form 2 320 atom routes through multiple OCH passage, and are communicated with by electric interconnection at OCH interchannel.Form 3 330 be atom route through multiple OCH passage and OTUk physical connection, and to be communicated with by electric interconnection between OCH and OCH, OCH and OTUk physical connection.
ODU-AR is formed primarily of OCH, interconnection, OTUk physical connection three kinds of objects.For the multiplexing OTN network of single-stage, A/Z holds port to be ODUkCTP and time-gap number; For multistage multiplexing OTN network, A/Z port is ODUkCTP.
In step 140, optical channel and OTUk physical connection is gone out according to the bandwidth adaptation of network element port support, using A, Z network element of optical channel and OTUk physical connection as an object, using optical channel and OTUk physical connection as line object, initial sum is selected to stop network element, the route generating origin network element and stop between network element, and select and described bandwidth adaptation CTP and time slot, generate optical channel atom route.
Wherein, need the multiplexed path kind of clear and definite OCH and OTUk two ends network element, and all kinds of OCH there is no alarm and performance to get over line.Design the actual bandwidth demand (such as 10G, 40G etc.) of the ODU-AR of route according to band and dodge condition (such as needing node, port and the network system etc. avoided), select OCH, OTUk physical connection of available free ability, eliminating must without OCH, OTUk physical connection, hold network element as an object A, Z of OCH, OTUk physical connection, OCH, OTUk physical connection builds search network as line object.
According to initial, the requirement of termination machine room of ODU-AR to be opened, in search network, find suitable initial, termination network element.On search network, adopt route search algorithm, routing plan possible between search origin network element, termination network element.If do not meet business to the route searched out through condition, then to give up.
In this embodiment, the present invention is on acquisition OTN network physical topology information basis, by to the analysis of business demand and planning, create OTUk physical connection, and generate LINK-AR and ODU-AR, service fulfillment can be carried out based on LINK-AR and ODU-AR, create necessary interconnection, provide business directly to carry service path, for service fulfillment provides basis, achieve the contiguous network Topology connection across producer, cross-system, improve routing Design efficiency.
An alternative embodiment of the invention, when carrying out TCP and selecting, need the multiplex mode differentiating the CTP that the two-port of tributary card and/or wiring board is corresponding, namely be that single-stage is multiplexing or multistage multiplexing, wherein, such as from low rate 10G to two-forty 100G, the multiplexing 10G of being exactly of single-stage is directly multiplexed into inside 100G, multistage multiplexing be 10G to 40G, then to 100G.If the CTP of the corresponding bandwidth in two ends is that single-stage is multiplexing, select the number of time slots of the common factor relevant atomic route bandwidth of two ends free timeslot, select any one available CTP based on time slot, if select less than CTP, then remove a minimum time slot, then add a new time slot and come in select CTP; If the CTP of the corresponding bandwidth in two ends is multistage multiplexing, select any one multiplexed path as CTP to be selected in the common factor of the corresponding multiplexed path of two ends bandwidth, filter out CTP corresponding to this multiplexed path of two ends and time slot, get the identical and CTP that multiplexed path is identical of two ends time slot as qualified CTP.The CTP of the corresponding bandwidth in two ends is there will not be to be the multiplexing and multistage multiplexing situation of single-stage.
If route can not be searched out, then create new OCH and/or OTUk physical connection.If create OTUk physical connection, then search network is risen to machine room particle size fraction from network element particle size fraction, building with machine room is the search network of granularity, repeats the generative process of LINK-AR and ODU-AR.Wherein, the establishment of LINK-AR only includes OTUk physical connection.And the establishment of ODU-AR both can comprise OTUk physical connection comprises OCH.
Wherein, OCH, OTUk physical connection that refining machine room route is corresponding; Often organizing in routing plan, selecting the CTP and the time slot that meet LINK-AR or ODU-AR bandwidth successively.According to route appraisement system, by optional routing plan according to trap queuing, provide the optimum routing plan of many groups as final route scheme, select for user.
Whether analyze every bar route successively has route can sensible (such as OCH or OTUk physical connection) in machine room, if cannot be sensible, then carry out jumper connection, and judge whether the board type of OTUk physical connection two ends network element and port speed match, if, then can carry out jumper connection connection, otherwise, do not carry out jumper connection connection.Consider that the route that physics jumper connection point is fewer is more excellent simultaneously.
If still can not routing plan be searched out, then search network is promoted to website, city rank by machine room granularity, and repeats the constructive process of LINK-AR and ODU-AR.
In this embodiment, the present invention is on acquisition OTN network physical topology information basis, by to the analysis of business demand and planning, create OTUk physical connection, and generate LINK-AR and ODU-AR, service fulfillment can be carried out based on LINK-AR and ODU-AR, create necessary interconnection, provide business directly to carry service path, for service fulfillment provides basis, achieve the contiguous network Topology connection across producer, cross-system, improve routing Design efficiency.
According to above-mentioned two embodiments, the present invention, by building the atom route of different rates, achieves flexible allocation and the efficiency utilization of OTN network channel resource.
Be introduced with the generative process of a specific embodiment to ODU-AR of the present invention below.
To open one across the service circuit of A, B Liang Ge producer webmaster, the process based on atom route is analyzed.
As shown in Figure 4,410 is A producer to application scenarios, and 420 is B producer.Open a GE business across A, B two plant equipment, 430 is that landing of A producer holds NE5,440 to be that landing of B producer holds NE6.Two plant equipment docking occur on B producer NE1 and A producer NE3, are connected by jumping fiber.Opening process relates to the interpolation of OTUk physical connection, ODU-AR manually adds process.OCH passage is there is between B producer NE1-NE6; OCH passage is there is between A producer NE3-NE5.Wherein, LS4, LN4 are wiring board, and CS4, CH1, TN4, TN1 are tributary card.Digitized representation be the numbering (such as, 2-1-1) of board port.
Generation of atoms route (ODU-AR):
The generation of atom route connects fine data based on existing OCH channel data, physics:
OCH passage: first need to create two OCH passages on producer's webmaster, goes out OCH passage by MTOSI interface collection routing iinformation, adaptation layer adaptation.In this example, two passes data are as shown in table 1:
| Type | A holds port | Z holds port | Producer | Bandwidth |
| OCH | NE1：2-11-1 | NE6：2-11-1 | B producer | 100G |
| OCH | NE3：1-19-1 | NE5：1-10-1 | A producer | 100G |
Table 1
Wherein, OTUk is physically connected as shown in table 2:
A holds B producer NE1:2-13-1 to connect Z and holds A producer NE3:0-23-1.
| Type | A holds port | A holds producer | Z holds port | Z holds producer | Bandwidth |
| OTUk | NE1：2-13-1 | B producer | NE3：0-23-1 | A producer | 100G |
Table 2
Select OTUk physical connection and OCH passage, generate ODU-AR atom route.First, B producer OCH:NE1:0-2-11-1 ~ NE6:0-2-11-1 is selected; A producer OCH:NE3:1-19-1 ~ NE5:1-10-1; Add the OTUk physical connection of docking.
Table 3 is docking OTU4 intersection information.
Table 3
In order to the use scenes of ODU-AR is described, need the CTP ability defining odu4=1 in table 4, therefore in docking, adopt the direct 100G docking of OTU4.Parameter is as follows:
| Type | A holds port | A holds producer | Z holds port | Z holds producer | CTP | Time slot |
| ODU-AR | NE6：2-11-1 | B producer | NE5：1-10-1 | A producer | odu4＝1 | 1-80 |
Table 4
Service fulfillment is as follows:
Based on ODU-AR atom route, by creating interleaved mode of singly standing, creating two ends and landing the interconnection of GE business.Table 5 is for creating two ends landing service.
Table 5
On the basis of the ODU-AR created, create from tributary card to the interconnection of atom route at the two ends network element of atom route, on the NE6 of such as B producer, create from A (tributary card): odu0=1 to Z (atom route): the intersection of odu4=1/odu0=1.
In this embodiment, on acquisition OTN network physical topology information basis, by to the analysis of business demand and planning, create OTUk physical connection, and generate ODU-AR, create from tributary card to the interconnection of atom route at the two ends network element of atom route, on the NE6 of such as B producer, create from A (tributary card): odu0=1 to Z (atom route): the intersection of odu4=1/odu0=1.To provide business directly to carry service path, for service fulfillment provides basis, achieve the contiguous network Topology connection across producer, cross-system, improve routing Design efficiency.
Fig. 5 is the structural representation of an embodiment of the generation system of optical transfer network atom route of the present invention.This embodiment comprises: condition dispensing unit 510, OTUk physical connection unit 520, physical link atom route generation unit 530 and optical channel atom route generation unit 540.Wherein,
Condition dispensing unit 510 obtains OTN network physical topology information.
By obtaining OTN network physical topology information, in succession form OTS (optical transmission section), OMS (optical multiplexing section), OCH (optical channel) layer logical network.Network physical topology information comprise device name type, board type, port support bandwidth and optical cable information, wherein, board type comprises wiring board, tributary card or light amplification plate, the bandwidth that port is supported can be 100G, 40G etc., and optical cable information comprises the board port that optical cable two ends connect.
OTUk physical connection unit 520, selects the branch line plate port of adjacent network elements, generates the OTUk physical connection between two-port according to selected port.
Wherein, wiring board port is network-side port, and tributary card port is user's side business access interface.User selects two ends to support the branch line plate port of OTN pattern, and generates OTUk physical connection according to the port numbers at tributary card/wiring board two ends.
Physical link atom route generation unit 530, selects CTP and the time slot at OTUk physical connection two ends, generates physical link atom route.
According to the definitions of bandwidth of physical link atom route (LINK-AR), bandwidth (such as 10G, 40G etc.) information needed for service fulfillment, selects CTP and the time slot at OTUk physical connection two ends.CTP, time slot are that the assignment of logical of the forwarding bandwidth that board is supported indicates, and such as one piece of 100G board, then can be divided into 80 time slots.So according to the actual demand (such as 10G) of bandwidth, then select CTP and time slot (such as time slot 1-8).
Atom route is the minimum composition granularity of service fulfillment, comprise physical link atom route (LINK-AR), as shown in Figure 2, LINK-AR is two ends is the logical channel based on ODUk particle that OTN interface is formed by physical fiber jumper connection, in the middle of it the jumping fiber of process complete site operation, LINK-AR to be only limitted in same city between website, it is interior interconnected stand.
Atom route also comprises optical channel atom route (ODU-AR), and ODU-AR is that two ends are OTN wiring board physical port and based on the logical channel of ODUk particle, in the middle of it the intersection of process and jumping fiber realized allocation activation and site operation.ODU-AR comprises three kinds of forms as shown in Figure 3, and form 1 is that atom route is merely through single OCH passage.Form 2 320 atom routes through multiple OCH passage, and are communicated with by electric interconnection at OCH interchannel.Form 3 330 be atom route through multiple OCH passage and OTUk physical connection, and to be communicated with by electric interconnection between OCH and OCH, OCH and OTUk physical connection.
ODU-AR is formed primarily of OCH, interconnection, OTUk physical connection three kinds of objects.For the multiplexing OTN network of single-stage, A/Z holds port to be ODUkCTP and time-gap number; For multistage multiplexing OTN network, A/Z port is ODUkCTP.
Optical channel atom route generation unit 540, optical channel and OTUk physical connection is gone out according to the bandwidth adaptation of network element port support, using A, Z network element of optical channel and OTUk physical connection as an object, using optical channel and OTUk physical connection as line object, initial sum is selected to stop network element, the route generating origin network element and stop between network element, and select and described bandwidth adaptation CTP and time slot, generate optical channel atom route.
Wherein, need the multiplexed path kind of clear and definite OCH and OTUk two ends network element, and all kinds of OCH there is no alarm and performance to get over line.Design the actual bandwidth demand (such as 10G, 40G etc.) of the ODU-AR of route according to band and dodge condition (such as needing node, port and the network system etc. avoided), select OCH, OTUk physical connection of available free ability, eliminating must without OCH, OTUk physical connection, hold network element as an object A, Z of OCH, OTUk physical connection, OCH, OTUk physical connection builds search network as line object.
According to initial, the requirement of termination machine room of ODU-AR to be opened, in search network, find suitable initial, termination network element.On search network, adopt route search algorithm, routing plan possible between search origin network element, termination network element.If do not meet business to the route searched out through condition, then to give up.
In this embodiment, the present invention is on acquisition OTN network physical topology information basis, by to the analysis of business demand and planning, create OTUk physical connection, and generate LINK-AR and ODU-AR, service fulfillment can be carried out based on LINK-AR and ODU-AR, create necessary interconnection, provide business directly to carry service path, for service fulfillment provides basis, achieve the contiguous network Topology connection across producer, cross-system, improve routing Design efficiency.
An alternative embodiment of the invention, this system also comprises CTP and selects module 550, CTP selects module 550 to need to differentiate the multiplex mode of the CTP that the two-port of tributary card and/or wiring board is corresponding, namely be that single-stage is multiplexing or multistage multiplexing, wherein, such as from low rate 10G to two-forty 100G, the multiplexing 10G of being exactly of single-stage is directly multiplexed into inside 100G, multistage multiplexing be 10G to 40G, then to 100G.If the CTP of the corresponding bandwidth in two ends is that single-stage is multiplexing, select the number of time slots of the common factor relevant atomic route bandwidth of two ends free timeslot, select any one available CTP based on time slot, if select less than CTP, then remove a minimum time slot, then add a new time slot and come in select CTP; If the CTP of the corresponding bandwidth in two ends is multistage multiplexing, select any one multiplexed path as CTP to be selected in the common factor of the corresponding multiplexed path of two ends bandwidth, filter out CTP corresponding to this multiplexed path of two ends and time slot, get the identical and CTP that multiplexed path is identical of two ends time slot as qualified CTP.The CTP of the corresponding bandwidth in two ends is there will not be to be the multiplexing and multistage multiplexing situation of single-stage.
If can not search out route, condition dispensing unit 510, for creating new OCH and/or OTUk physical connection.If create OTUk physical connection, then search network is risen to machine room particle size fraction from network element particle size fraction, structure take machine room as the search network of granularity, physical link atom route generation unit 530, repeat the generative process of LINK-AR, optical channel atom route generation unit 540, repeats the generative process of ODU-AR.Wherein, the establishment of LINK-AR only includes OTUk physical connection.And the establishment of ODU-AR both can comprise OTUk physical connection comprises OCH.
Wherein, OCH, OTUk physical connection that refining machine room route is corresponding; Often organizing in routing plan, selecting the CTP and the time slot that meet LINK-AR or ODU-AR bandwidth successively.According to route appraisement system, by optional routing plan according to trap queuing, provide the optimum routing plan of many groups as final route scheme, select for user.
Jumper connection unit 560 and optimum route selection unit 570 can also be comprised in this embodiment.Whether jumper connection unit 560 analyzes every bar route successively has route can sensible (such as OCH or OTUk physical connection) in machine room, if cannot be sensible, then carry out jumper connection, and judge whether the board type of OTUk physical connection two ends network element and port speed match, if, then can carry out jumper connection connection, otherwise, do not carry out jumper connection connection.Optimum route selection unit 570 considers that the route that physics jumper connection point is fewer is more excellent simultaneously.
If still can not routing plan be searched out, then search network is promoted to website, city rank by machine room granularity, and repeats the constructive process of LINK-AR and ODU-AR.
In this embodiment, the present invention is on acquisition OTN network physical topology information basis, by to the analysis of business demand and planning, create OTUk physical connection, and generate LINK-AR and ODU-AR, service fulfillment can be carried out based on LINK-AR and ODU-AR, create necessary interconnection, provide business directly to carry service path, for service fulfillment provides basis, achieve the contiguous network Topology connection across producer, cross-system, improve routing Design efficiency.
According to above-mentioned two embodiments, the present invention, by building the atom route of different rates, achieves flexible allocation and the efficiency utilization of OTN network channel resource.
So far, the present invention is described in detail.In order to avoid covering design of the present invention, details more known in the field are not described.Those skilled in the art, according to description above, can understand how to implement technical scheme disclosed herein completely.
Method of the present invention and device may be realized in many ways.Such as, any combination by software, hardware, firmware or software, hardware, firmware realizes method of the present invention and device.Said sequence for the step of described method is only to be described, and the step of method of the present invention is not limited to above specifically described order, unless specifically stated otherwise.In addition, in certain embodiments, can be also record program in the recording medium by the invention process, these programs comprise the machine readable instructions for realizing according to method of the present invention.Thus, the present invention also covers the recording medium stored for performing the program according to method of the present invention.
Although be described in detail specific embodiments more of the present invention by example, it should be appreciated by those skilled in the art, above example is only to be described, instead of in order to limit the scope of the invention.It should be appreciated by those skilled in the art, can without departing from the scope and spirit of the present invention, above embodiment be modified.Scope of the present invention is limited by claims.
Claims (10)
1. a generation method for optical transfer network atom route, is characterized in that, comprising:
Obtain OTN network physical topology information, described network physical topology information comprise device name type, board type, port support bandwidth and optical cable information, wherein, described board type comprises wiring board, tributary card or light amplification plate, and optical cable information comprises the board port that optical cable two ends connect;
Select the branch line plate port of adjacent network elements, generate the OTUk physical connection between two-port according to selected port;
Select CTP and the time slot at OTUk physical connection two ends, generate physical link atom route;
Optical channel and OTUk physical connection is gone out according to the bandwidth adaptation of network element port support, using A, Z network element of optical channel and OTUk physical connection as an object, using optical channel and OTUk physical connection as line object, initial sum is selected to stop network element, the route generating origin network element and stop between network element, and select and described bandwidth adaptation CTP and time slot, generate optical channel atom route.
2. the generation method of optical transfer network atom route according to claim 1, select the step of CTP to comprise:
If the CTP of the corresponding bandwidth in two ends is that single-stage is multiplexing, select the number of time slots of the common factor relevant atomic route bandwidth of two ends free timeslot, select any one available CTP based on time slot, if select less than CTP, then remove a minimum time slot, then add a new time slot and come in select CTP;
If the CTP of the corresponding bandwidth in two ends is multistage multiplexing, select any one multiplexed path as CTP to be selected in the common factor of the corresponding multiplexed path of two ends bandwidth, filter out CTP corresponding to this multiplexed path of two ends and time slot, get the identical and CTP that multiplexed path is identical of two ends time slot as qualified CTP.
3. the generation method of optical transfer network atom route according to claim 1 and 2, comprising:
If route can not be searched, then create new optical channel and/or OTUk physical connection;
If create OTUk physical connection, then search network is risen to machine room particle size fraction from network element particle size fraction, repeat the generative process of physical link atom route and/or optical channel atom route.
4. the generation method of optical transfer network atom route according to claim 3, comprising:
Whether by way of machine room in have route can sensible, if cannot be sensible, then carry out jumper connection if analyzing every bar route successively;
Judge whether board type and the port speed of OTUk physical connection two ends network element match, and if so, then can carry out jumper connection connection, otherwise, do not carry out jumper connection connection.
5. the generation method of optical transfer network atom route according to claim 4, comprising:
Using route minimum for physics jumper connection point as optimum route.
6. a generation system for optical transfer network atom route, is characterized in that, comprising:
Condition dispensing unit, for obtaining OTN network physical topology information, described network physical topology information comprise device name type, board type, port support bandwidth and optical cable information, wherein, described board type comprises wiring board, tributary card or light amplification plate, and optical cable information comprises the board port that optical cable two ends connect;
OTUk physical connection unit, for selecting the branch line plate port of adjacent network elements, generates the OTUk physical connection between two-port according to selected port;
Physical link atom route generation unit, for selecting CTP and the time slot at OTUk physical connection two ends, generates physical link atom route;
Optical channel atom route generation unit, for going out optical channel and OTUk physical connection according to the bandwidth adaptation of network element port support, using A, Z network element of optical channel and OTUk physical connection as an object, using optical channel and OTUk physical connection as line object, initial sum is selected to stop network element, the route generating origin network element and stop between network element, and select and the CTP of described bandwidth adaptation and time slot, generate optical channel atom route.
7. the generation system of optical transfer network atom route according to claim 6, also comprises:
CTP selects module, if be all that single-stage is multiplexing for the CTP of the corresponding bandwidth in two ends, select the number of time slots of the common factor relevant atomic route bandwidth of two ends free timeslot, any one available CTP is selected based on time slot, if select less than CTP, then remove a minimum time slot, then add a new time slot and come in select CTP; If the CTP of the corresponding bandwidth in two ends is multistage multiplexing, select any one multiplexed path as CTP to be selected in the common factor of the corresponding multiplexed path of two ends bandwidth, filter out CTP corresponding to this multiplexed path of two ends and time slot, get the identical and CTP that multiplexed path is identical of two ends time slot as qualified CTP.
8. the generation system of the optical transfer network atom route according to claim 6 or 7, also comprises:
If described condition dispensing unit is used for searching route, then create new optical channel and/or OTUk physical connection; If create OTUk physical connection, then search network is risen to machine room particle size fraction from network element particle size fraction;
Described physical link atom route generation unit is for repeating the generative process of physical link atom route and/or described optical channel atom route generation unit for repeating the generative process of optical channel atom route.
9. the generation system of optical transfer network atom route according to claim 8, also comprises:
Whether jumper connection unit, having route can be sensible for analyzing every bar route successively, if cannot be sensible, then carrying out jumper connection in machine room; Judge whether board type and the port speed of OTUk physical connection two ends network element match, and if so, then can carry out jumper connection connection, otherwise, do not carry out jumper connection connection.
10. the generation system of optical transfer network atom route according to claim 9, also comprises:
Optimum route selection unit, for using route minimum for physics jumper connection point as optimum route.
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