CN101453670A - Node information publishing method, system and device - Google Patents
Node information publishing method, system and device Download PDFInfo
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Abstract
The invention discloses a method for releasing node information. The method comprises the following steps: an optical node generates an information bit stream according to node information of the optical node; and the optical node releases the generated information bit stream and a wavelength sequence corresponding to the node information. The embodiment of the invention effectively reduces data quantity of the node information released by the optical node through adopting the information bit stream generated according to the node information. Furthermore, the node information can be divided into static information and dynamic information according to the characteristics of the node information, and the optical node only needs to release the dynamic information in real time, thereby further reducing the data quantity released by the optical node.
Description
Technical field
The present invention relates to network communications technology field, particularly relate to a kind of node information publishing method, system and device.
Background technology
Optical-fiber network is as one of basic network of whole communication network, development is very fast, become the core of following wide area network and metropolitan area network, wherein, WDM (Wavelength Division Multiplexing, wavelength division multiplexing) optical-fiber network has been subjected to paying close attention to widely, and WRS (Wavelength Routing Switch, the optical wavelength multi-layer switches) and the appearance of PXC (Photonic Cross Connector, optical cross-connect), make network can in the light territory, can realize the exchange of data.For connection request calculates route and distributes the problem of wavelength is exactly so-called RWA problem, for the WDM optical transfer network, the RWA problem is one of its key problem, be the problem that connection request calculates route and distributes wavelength, when mainly showing the foundation request of light path, calculate and how in the physical topological structure of network, to select a route, and be the link assignment wavelength of route process from professional source node to destination node.How it seeks a suitable optical channel and reasonably distributes the employed wavelength of passage if having solved, make Limited resources play one's part to the full, thereby big as far as possible message capacity is provided.In the WDM optical-fiber network, an optical channel is not only determined by the Optical Switch Node and the optical link (optical fiber) of process, also by determining along each optical link assigned wavelength (channel).Do not having in the full light group of wavelength conversion capability, an optical channel must be set up (being the wavelength continuity constraint) along a common wavelength on all links of route by use.Because this constraint, optical channel calculates can not simply be divided into Route Selection and two subproblems of Wavelength Assignment.For example, may have a route, every link above it all has and the wavelength that does not use, but concerning all links, the wavelength that neither one is common.At this moment, can be by using extra opto-electronic conversion and having the optical switch of wavelength conversion capability to relax the wavelength continuity constraint, the son connection that optical channel is divided into several different wave lengths is gone into a light path.
ASON (Automatic Switched Optical Network, ASON) is the optical-fiber network of new generation that melts exchange, is transmitted as one, and it is a kind of dynamic, automatic switched transport network.In ASON, dynamically initiate service request by the user, node calculates and selects the path automatically, and realizes establishment of connection, recovery, dismounting by signaling control.Therefore, the RWA problem of ASON and WDM optical-fiber network is combined, by ASON the WDM optical-fiber network being carried out wave length routing is a kind of good connection method for building up.
Traditional wavelength-division network is a kind of static network of point-to-point, and the appearance of intelligent light switching technology, as OXC (Optical Cross-Connect, optical cross connect) technology, make the mobilism of wavelength-division network become possibility, just can provide Wavelength dispatching and the satisfied demand of setting up new business and dynamic increase/modification Network of configuration end to end thereby operator need not to redesign network.But, because the intersection restriction of the existence of restriction of the wavelength continuity in the WDM optical-fiber network and light intersection equipment, the Wavelength dispatching of wave-division device has obstruction, it can not look like SDH (Synchronous DigitalHierarchy, SDH (Synchronous Digital Hierarchy)) can be crossed to another passage from any one passage like that, this has just brought difficulty to the path computing of ASON calculating WDM optical-fiber network, therefore, must solve the intersection restricted problem of WDM optical network device.
The mode of prior art by Route Selection and Wavelength Assignment are separately carried out solved the restriction of wavelength continuity and intersected the problem of restriction to the influence of wavelength route assignment.At first, under the situation of not considering wavelength resource, select a route, can use to determine which wavelength along this route exploration then, if but along the route exploration of this selection to there not being the wavelength resource time spent, then return and reselect other routes, and survey again.Therefore to be that passage is set up efficient lower for the shortcoming of this mode, cause connecting setting up or heavy-route chronic, and this mode can not make full use of Internet resources to reach the maximization of wavelength utilization ratio.
On the other hand, prior art also adopts and reports the mode of optical node intersection limitation capability to carry out Route Selection, but the limitation capability of intersecting is only described the accessibility between the TE Link, be whether certain bar TE Link can arrive other TE Links, on behalf of all wavelengths that carries on the TE Link, TE Link can reach all can reach, therefore when optical node had wavelength conversion capability, the prior art just had no idea to carry out the expression of wavelength exchange capacity.
Summary of the invention
The goal of the invention of the embodiment of the invention provides a kind of node information publishing method, system and device, thereby can effectively issue the information of optical node, reduces the data volume that is flooded in the network simultaneously.
For achieving the above object, the embodiment of the invention proposes a kind of node information publishing method on the one hand, it is characterized in that, may further comprise the steps: optical node generates message bit stream according to the nodal information of self; Described optical node is issued the message bit stream and the pairing wavelength sequence of described nodal information that generate.
The embodiment of the invention also proposes a kind of nodal information delivery system on the other hand, comprise at least two optical nodes, described optical node is used for generating message bit stream according to the nodal information of self, and the message bit stream and the pairing wavelength sequence of described nodal information that generate are issued to other optical nodes; The nodal information that bit stream that other optical nodes bases receive and wavelength sequence obtain described optical node.
The embodiment of the invention also proposes a kind of nodal information delivery system, a kind of nodal information delivery system, it is characterized in that, comprise optical node and centralized calculation unit, path, described optical node, be used for generating message bit stream, and the message bit stream and the pairing wavelength sequence of described nodal information that generate are issued to centralized calculation unit, path according to the nodal information of self; Centralized calculation unit, described path is used for the nodal information that obtains described optical node according to the bit stream that receives and wavelength sequence.
The embodiment of the invention also proposes a kind of optical node, comprises bit stream generation module and release module, and described bit stream generation module is used for generating message bit stream according to the nodal information of self; Described release module is used for message bit stream and the pairing wavelength sequence issue of described nodal information that will generate.
The embodiment of the invention also proposes a kind of node information publishing method, may further comprise the steps: optical node generates wavelength accessibility bit stream according to the wavelength reachability information of self; Described optical node is issued the wavelength accessibility bit stream and the wavelength seizure condition information that generate respectively.
The technical scheme of the embodiment of the invention has the following advantages, because nodal information is generated message bit stream, has reduced the data volume of optical node publisher node information effectively.
Description of drawings
Fig. 1 is the cross connecting structure schematic diagram of embodiment of the invention optical node;
Fig. 2 is an embodiment of the invention optical node information issuing method flow chart;
Fig. 3 is the nodal information delivery system structure chart of the embodiment of the invention one;
Fig. 4 is the nodal information delivery system structure chart of the embodiment of the invention two.
Embodiment
Because the optical node capacity is bigger, if all the link wavelength resource information on each optical node of real-time release just have considerable resource interactive information so under the situation of large scale network.Particularly for the optical node with wavelength conversion capability, not only will issue link wavelength resource information, also need to issue the wavelength conversion capability of self, therefore so many resource interactive information can be brought white elephant to network.The embodiment of the invention can generate message bit stream according to nodal information, has reduced the data volume of optical node publisher node information effectively.And the embodiment of the invention is also according to the different qualities of nodal information, nodal information is divided into static information (as the wavelength reachability information) and multidate information (as wavelength seizure condition information), the embodiment of the invention only need be issued once for static information or issue when the node hardware configuration information changes again, and need not periodically regularly to issue, therefore further reduced the data volume of optical node issue.
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail:
In order can better to understand, below wavelength reachability information and wavelength seizure condition information are done simple introduction to the embodiment of the invention.As shown in Figure 1, be the cross connecting structure schematic diagram of an optical node of the embodiment of the invention, have six line directions can carry out Wavelength dispatching in this example, be respectively link TE 1, TE 2, TE3, TE 4, and TE 5, TE6, article two, link-local can carry out the Add/drop wavelength scheduling, is respectively TE7, TE8.In above-mentioned each link, every link all carries many wavelength, and this optical node self has wavelength conversion capability among the figure.The scheduling of the wavelength between each the bar link that can finish as the cross matrix among the figure, this Wavelength dispatching comprises the scheduling of identical wavelength, also comprises the scheduling of different wave length, and the scheduling of different wave length can utilize the method for wavelength conversion unit to finish.For example, the wavelength lambda 1 of carrying can be dispatched to wavelength Lambda 1 among the TE 4 by interconnection among the TE 1; And connect the lambda 2 that is dispatched among the TE 4 if desired for the lambda 1 of carrying among the TE 2, then just need wavelength conversion unit conversion.
The connection dispatching of carrying wavelength just is referred to as the wavelength accessibility of link among above-mentioned two TE, determines that the information of two wavelength accessibilities between the TE Link is called the wavelength reachability information.Wavelength accessibility ability information is relative static information, and is relevant with physical equipment, finishes in the network planning.After the configuration of the hardware device of network was finished, the wavelength accessibility of link just determined, generally hardware device does not change then that the wavelength reachability information can not change yet, and hardware device changes, and then the wavelength reachability information may change thereupon.In addition, in having the node of wavelength conversion capability, after the public resource that is used for wavelength Conversion exhausted, the wavelength reachability information of node also can change.
The embodiment of the invention is passed through the issue to the wavelength reachability information of optical node, makes can distribute the wavelength route at the WDM optical-fiber network quickly and accurately according to the wavelength reachability information of each optical node issue when carrying out Route Selection and Wavelength Assignment.
Wherein preferably, though can distribute the wavelength route more accurately owing to only issue the wavelength reachability information, though but the wavelength reachability information shows the accessibility that can realize wavelength sometimes, but may can't carry out the carrying of other business because the wavelength resource of link is taken by certain bar business in practice.Therefore as preferred embodiment, in the embodiment of the invention, optical node is also issued corresponding wavelength seizure condition information, and its medium wavelength seizure condition information is a kind of multidate information, changes along with the variation of optical node bearer service.
Below be that example specifically describes above-mentioned wavelength reachability information and wavelength seizure condition information just with link TE1 and TE4 among Fig. 1, as shown in table 1, wavelength seizure condition information for link TE1, suppose that this optical node place system supports 40 wavelength, be lambda 1, lambda 2 ..., lambda40.Below only be exemplified as and support 40 wavelength, in real network, need to determine the concrete wavelength of support according to the physical device ability of disposing for ease of understanding.If seizure condition 0 expression wavelength is still unoccupied in the table, be that 1 this wavelength of expression is occupied; It is still unoccupied that certain expression to this seizure condition equally also can be provided with 1 expression wavelength, is that 0 this wavelength of expression is occupied.Therefore any similar variation all should be embodiment of the invention protection range and contains.Above-mentioned seizure condition is represented with at least one bit position.The seizure condition bit information of all wavelengths on the TE Link constitutes the wavelength seizure condition bit stream of TE Link.
Table 1 is the wavelength seizure condition information of link TE1
As in the table 1, the seizure condition of wavelength X 1 correspondence of link TE1 is 1, illustrates that then this wavelength is occupied; The seizure condition of wavelength X 40 correspondences of link TE1 is 0, illustrates that then this wavelength is unoccupied.
Table 2 is the wavelength seizure condition information of link TE4
| The wavelength numbering | λ1 | λ2 | λ3 | λ4 | λ5 | λ6 | λ7 | λ8 | ... . . | λ35 | λ36 | λ37 | λ38 | λ39 | λ40 |
| Seizure |
1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Table 3 is the wavelength reachability information of link TE1 to link TE4
As shown in Figure 2, be embodiment of the invention optical node information issuing method flow chart, may further comprise the steps:
Step S201, optical node determine wavelength and the wavelength sequence information in the described optical node TE Link.
Step S202, optical node determine the nodal information of this optical node, as determining the wavelength reachability information of this optical node, wherein, preferably also determine the wavelength seizure condition information of this optical node.
Step S203, optical node generates message bit stream according to above-mentioned nodal information.Wavelength reachability information from the link TE1 shown in the table 3 to link TE4 as can be seen, the data volume of wavelength reachability information is bigger, link TE1 and link TE4 respectively have 40 wavelength in this embodiment, the wavelength reachability information of these two links just has 1600 unit informations (40 row * 40 row) like this, if each unit information takies 1 byte, the wavelength reachability information of then issuing this TE Link just needs the information of 1600 bytes.The link that this optical node comprised is many more, and the nodal information of this optical node is also just many more.Therefore the embodiment of the invention nodal information of giving chapter and verse generates message bit stream, each to the intersection block capability of wavelength with at least one bit bit representation, the wavelength accessibility bit stream (bitmap_list) of the bit position configuration node of the intersection block capability between all wavelengths on the node on two or more the TE Link.Wavelength accessibility bit stream after generating as the wavelength reachability information of his-and-hers watches 3 is expressed as follows (equally wavelength seizure condition information being generated as wavelength seizure condition bit stream).
Wavelength accessibility bit stream after table 4 link TE1 generates to link TE4
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| D| B | the C| compression algorithm | reserve |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| row | column |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| reach_link |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|1 1 1 1 1 1 1 1 . . . . . . . . . . . . . . . . . . . . . . . .|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 . . . . . . . . . . . . . . . .|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|. . . . . . . . 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 . . . . . . . .|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|. . . . . . . . . . . . . . . . 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|. . . . . . . . . . . . . . . . . . . . . . . . 1 1 1 1 1 1 1 1|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|0 0 0 0 1 0 0 0 . . . . . . . . . . . . . . . . . . . . . . . .|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 . . . . . . . . . . . . . . . .|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|. . . . . . . . 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 . . . . . . . .|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|. . . . . . . . . . . . . . . . 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|. . . . . . . . . . . . . . . . . . . . . . . . 1 1 1 1 1 1 1 1|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| ... ... ... ... |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| ... ... ... ... |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|0 0 0 0 0 0 0 0. . . . . . . . . . . . . . . . . . . . . . . . |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 . . . . . . . . . . . . . . . .|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|. . . . . . . . 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 . . . . . . . .|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|. . . . . . . . . . . . . . . . 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|. . . . . . . . . . . . . . . . . . . . . . . . 1 1 1 1 1 1 1 1|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|0 0 0 0 0 0 0 0 . . . . . . . . . . . . . . . . . . . . . . . .|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 . . . . . . . . . . . . . . . .|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|. . . . . . . . 0 0 0 0 0 1 0 0 1 1 1 1 1 1 1 1 . . . . . . . .|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|. . . . . . . . . . . . . . . . 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|. . . . . . . . . . . . . . . . . . . . . . . . 1 1 1 1 1 1 1 1|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
In the table 4 " D " to represent that wavelength in the TE Link that this table describes can reach unidirectional or two-way, if " direction " is when being two-way, this form is also represented the wavelength accessibility from TE4 to the TE1 direction simultaneously.Whether the intersection of " B " expression wavelength has obstruction, 00:expression has obstruction; Concrete wavelength blocker situation is described in follow-up bitmap list; 01:the wavelength of two TE Links of expression can clog-freely be crossed to identical wavelength; 10:reserve; 11:represent clog-free; Any wavelength of clog-free this TE Link of expression can arrive any wavelength of specifying TE Link, when clog-free, " row ", and the value of " column " can be ignored, and " bitmap list " then do not embodied (because all being 1 this moment) again.The indication of " C " expression data compression; 0:represent that follow-up wavelength accessibility bit stream does not compress; 1:represent that follow-up wavelength accessibility bit stream has passed through compression: " compression algorithm ": when the C bit is " 1 ", indicate employed compression algorithm. " reach_link " represents that this table describes is wavelength accessibility from TE1 to which TE Link direction (this example is TE4); " row " and " colum " represents that then follow-up bit stream resolves 40 ripples with expression TE1 to the wavelength accessibility between 40 ripples of TE4 according to the matrix form of how many row of how many row (this example is 40 row 40 row). link TE1 just can be described to the wavelength reachability information of link TE4 by the bit stream in the table 4 like this; Represent respectively that such as first continuous 40 bit streams, 111111 11........................1 1111111 of table 4 λ of TE1 was clipped to the accessibility of 40 wavelength of λ 1 λ 2 λ 3 λ 4 λ 5 λ 6 λ 7 λ 8... λ 33 λ 34 λ 35 λ 36 λ 37 λ 38 λ 39 λ 40 of TE4 in 1 minute, second continuous 40 bit streams, 1111111 1........................0 0000000 of table 4 represent that respectively the λ of TE1 was clipped to the accessibility of 40 wavelength of λ 1 λ 2 λ 3 λ 4 λ 5 λ 6 λ 7 λ 8... λ 33 λ 34 λ 35 λ 36 λ 37 λ 38 λ 39 λ 40 of TE4 in 2 minutes.
Step S204, optical node is issued the message bit stream and the pairing wavelength sequence of nodal information that generate, promptly by expansion IGP (Interior Gateway Protocol) agreement message bit stream and the pairing wavelength sequence of nodal information that generates is flooded to other optical nodes or centralized calculation unit, path.If nodal information only comprises the wavelength reachability information of this optical node, then wavelength accessibility bit stream and this wavelength reachability information are issued the wavelength sequence of using (as the wavelength sequence of link TE1 and TE4: λ 1 λ 2 λ 3 λ 4 λ 5 λ 6 λ 7 λ 8... λ 33 λ 34 λ 35 λ 36 λ 37 λ 38 λ 39 λ 40).Wherein the present invention does not make any restriction to the wavelength sequence issue of above-mentioned wavelength accessibility bit stream and use, the wavelength sequence of wavelength accessibility bit stream and use can be issued together by a message; Also can issue wavelength accessibility bit stream earlier, the wavelength sequence that the issue of the wavelength sequence of issue use, or elder generation is again used is issued corresponding accessibility bit stream again.
Wherein, preferably, nodal information comprises wavelength reachability information and wavelength seizure condition information, the embodiment of the invention also adopts different published method to wavelength accessibility bit stream with wavelength seizure condition bit stream and the corresponding wavelength sequence of using according to the different qualities of wavelength reachability information (static information) and wavelength seizure condition information (multidate information).For the wavelength reachability information, generally only change at the hardware Shi Caihui that changes, therefore only need be when system initialization once to this wavelength accessibility bit stream inundation, just do not need further to upgrade again this information if follow-up wavelength reachability information changes, therefore can further reduce the data volume of information inundation.And be real-time change for wavelength seizure condition information, it is synchronous therefore to need real-time update to carry out the whole network, and the wavelength seizure condition bit stream after therefore needing in time will upgrade is issued.The issue of its medium wavelength accessibility bit stream and wavelength seizure condition bit stream also needs to issue pairing wavelength sequence, can resolve according to corresponding wavelength sequence thereby make after receiving bit stream information.
The embodiment of the invention has proposed preferred embodiment a kind of, when nodal information comprises wavelength reachability information and wavelength seizure condition information, and the wavelength reachability information is consistent with the pairing wavelength sequence of wavelength seizure condition information, so only needing to issue corresponding wavelength sequence when issue wavelength accessibility bit stream or wavelength seizure condition bit stream gets final product, need not all to issue, also the wavelength sequence can be issued (as can in system initialization, the wavelength sequence being released) certainly separately.As execution mode more preferably, the embodiment of the invention proposes to issue corresponding wavelength sequence when issue wavelength seizure condition bit stream, specifically describes as follows:
Preferably, the embodiment of the invention needs two kinds of sub_TLV to represent the wavelength upstate and the wavelength accessibility of TE Link respectively respectively by the inundation that a link sub-TLV who increases TE LSA supports wavelength accessibility bit stream and wavelength seizure condition bit stream.
The form of table 5 wavelength upstate sub-TLV
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Reserved | lambda_num |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| lambda1_value |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| lambda2_value |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| ...... |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| lambdan_value |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| occupancy_status |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| ... |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| occupancy_status |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Wherein, Reserved uses for keeping; Lambda_num is the wavelength number that this TE Link carried; Lambda_value (1-n) numbers (pairing wavelength sequence) for the wavelength that this TE Link carried; Occupancy_status: whether wavelength is used, and can use bit stream to represent (wavelength seizure condition bit stream).
The form of table 6 wavelength accessibility sub-TLV
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| D| B | the C| compression algorithm | Reserved |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| row | column |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| reach_link |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| bitmap list |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| ...... |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| ...... |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| ...... |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| ...... |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| ...... |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| ...... |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| ...... |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| ...... |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Wherein, " D " is directivity, represents that the wavelength accessibility in the entrained TE Link is unidirectional or two-way; Whether the intersection of " B " wavelength has obstruction, 00: expression has obstruction; Concrete wavelength blocker situation is described in follow-up bitmap list; 01: the wavelength of two TE Links of expression can clog-freely be crossed to identical wavelength; 10: reserve; 11: represent clog-free; Any wavelength of clog-free this TE Link of expression can arrive any wavelength of specifying TE Link, when clog-free, " row ", the value of " column " can be ignored, any wavelength that " bitmap list " then do not embodied (because all being 1 this moment) clog-free this TE Link of expression again can arrive any wavelength of specifying TE Link, when clog-free., the indication of " C " expression data compression; 0: represent that follow-up wavelength accessibility bit stream does not compress; 1: represent that follow-up wavelength accessibility bit stream has passed through compression: " compression algorithm ": when the C bit is " 1 ", indicate employed compression algorithm." Reserved " use for keeping.What " reach_link " represented for this sub-TLV of expression is wavelength accessibility to which bar link TE, owing to be sub-TLV, has indicated source link TE in the TLV of upper strata, therefore need indicate that the link TE of arrival gets final product in sub-TLV; " row, column " expression according to how many row of how many row is resolved following bit sequence; Whether " bitmap list " expression wavelength can reach is wavelength accessibility bit stream.
Wherein, the embodiment of the invention also proposes a kind of mode that pairing wavelength sequence is sent separately.Be further to reduce data volume, about the issue of wavelength sequence, also can take the mode of issue separately at table 1 and table 2.These wavelength sequences be a TE Link of expression all wavelengths that can support, after hardware device is determined, the wavelength that TE Link on the equipment is supported has also just been determined, can in system initialization this wavelength sequence be released, follow-up wavelength sequence does not change then can no longer real-time issuing; And wavelength seizure condition information is owing to can often change, then need wavelength seizure condition bit stream periodicity and/or real-time release, so-called real-time release is exactly issue immediately after wavelength seizure condition information changes, and periodically issue be exactly in the cycle of setting this wavelength seizure condition information whether change and all will issue.But the wavelength seizure condition bit stream that the embodiment of the invention generates about nodal information and the order of wavelength accessibility bit stream are then consistent with this wavelength sequence.
Can release with the form of table 7 and table 8 such as the wavelength sequence, the wavelength seizure condition is with the form issue of table 9, the bit-order of seizure condition bit stream occupancy_status in the table 9 is consistent with the wavelength sequence of table 7 or table 8, and the wavelength reachability information utilizes the wavelength sequence of table 7 or table 8 to carry out bit stream too and generates and resolve (not shown).
The wavelength sequence of table 7 TE 1
| The wavelength numbering | λ1 | λ2 | λ3 | λ4 | λ5 | λ6 | λ7 | λ8 | ... . . | λ35 | λ36 | λ37 | λ38 | λ39 | λ40 |
The wavelength sequence of table 8 TE 4
| The wavelength numbering | λ1 | λ2 | λ3 | λ4 | λ5 | λ6 | λ7 | λ8 | ... . . | λ35 | λ36 | λ37 | λ38 | λ39 | λ40 |
Table 9 wavelength seizure condition
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Reserved | lambda_num |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| occupancy_status |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| ...... |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
The embodiment of the invention also proposes a kind of according to sending behind the wavelength reachability information generation wavelength accessibility bit stream, and the mode that wavelength seizure condition information is directly sent, in this embodiment, the mode of wavelength reachability information employing table 6 is issued, and the issue as shown in table 10 below of wavelength seizure condition information.Specific as follows:
This embodiment medium wavelength seizure condition information also can adopt the form of sub-TLV as shown in table 10 below to issue:
The form of table 10 wavelength upstate sub-TLV:
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Reserved | lambda_num |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| lambda1_value |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| occupancy_status |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| lambda2_value |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| occupancy_status |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| ...... |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| ...... |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| lambdan_value |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| occupancy_status |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Wherein, Reserved: keep and use.Lambda_num is the wavelength number that this TE Link carried; Lambda1_value numbers for the 1st wavelength that this TE Link carried; Lambdan_value numbers for n the wavelength that this TE Link carried; Occupancy_status is whether wavelength is used.
Step S205 obtains the nodal information of described optical node according to the bit stream that receives and wavelength sequence.
Wavelength accessibility bit stream as above-mentioned optical node issue is consistent with the pairing wavelength sequence of wavelength seizure condition bit stream, and issues the preferred embodiment of corresponding wavelength sequence when issue wavelength seizure condition bit stream.Other optical nodes in the wavelength-division network or centralized calculation unit, path (as PCE) are after receiving the message that is carrying wavelength seizure condition bit stream, can resolve wavelength accessibility bit stream and the wavelength seizure condition bit stream that receives according to carrying the wavelength sequence (as the lambda_value of table 5 medium wavelength upstate sub-TLV) of carrying in the wavelength seizure condition bit stream message, thereby obtain the nodal information of this optical node, and carry out the wavelength route assignment of wavelength-division network according to the nodal information of resolving.
Wherein, preferably, the embodiment of the invention can also be before step S203 issues the message bit stream that generates and the pairing wavelength sequence of nodal information, the message bit stream that generates is compressed again, thereby as much as possible reduce data volume, such as issue again after the information of bitmap list is encoded by coding methods such as run-length encodings, can reduce data volume to a great extent.And the coded system of taking can be come out by some bit representation of sub TLV, other node re-uses previously described method the wavelength reachability information is parsed after receiving after these data and decoding by same coding method according to the indicating bit of coded system.Other optical nodes in the same wavelength-division network or centralized calculation unit, path also need to decompress earlier after receiving message, the bit stream after decompressing are resolved again.
The embodiment of the invention has proposed a kind of compress mode of run-length encoding, when node only possesses the part wavelength conversion capability, when especially 1 number has only seldom a part in the wavelength reachability information, 0 shared quantity relative more than 1 is a lot of in this moment wavelength reachability information bit stream, at this moment use compression algorithm can demonstrate advantage greatly, suppose that the wavelength reachability information between two TE Links of certain node is the bit stream that one 10 row 9 as shown in table 11 below is listed as, take the method for run-length encoding to carry out data compression it:
Table 11
Can bit stream be become 00,000,000,000,000,100,000,000,011,000,000,000,000,000,000,001,000,000,000 0000000000000000000001100000000000 promptly as the form of following table 13 according to line by line form cut-off by mode shown in the table 12:
Table 12
The unpressed bit stream of table 13
Former 90 bit streams can be compacted into 40 bit streams 1110100100001111010111111111000000001011 shown in the table 14 after using run-length encoding.Above-mentioned coded system only is a kind of more excellent mode of the embodiment of the invention, and can also take other coded system to carry out the compression and decompression of data in actual applications.
Haul distance
(binary system) 1,110 1,001 0,000 1,111 0,101 1,111 1,111 0,000 0000
Haul distance
(decimal system) 14 90 15 5 15 15 00
The stream of table 14 after run-length encoding
By the above-mentioned optical node information issuing method of the embodiment of the invention, generate message bit stream according to described nodal information, reduced the data volume of optical node publisher node information effectively.And according to the characteristic of nodal information, nodal information is divided into static information and multidate information, optical node only needs the real-time release multidate information, thereby further reduces the data volume of optical node issue.
The embodiment of the invention has proposed two kinds of nodal information delivery systems respectively according to the difference of control plane, below will describe with regard to two kinds of systems respectively.
As shown in Figure 3, nodal information delivery system structure chart for the embodiment of the invention one, this system comprises at least two optical nodes 1, optical node 1 is used for generating message bit stream according to the nodal information of self, and the message bit stream and the pairing wavelength sequence of nodal information that generate are issued to other optical nodes; The nodal information that bit stream that other optical nodes bases receive and wavelength sequence obtain optical node 1.
Wherein, optical node 1 comprises bit stream generation module 11, release module 12, node receiver module 13 and node parsing module 14.Bit stream generation module 11 is used for generating message bit stream according to nodal information; for example generate the wavelength accessibility bit stream shown in the table 4 according to the wavelength reachability information shown in the table 3; by nodal information being converted into corresponding bit stream; can greatly reduce the data volume of optical node issue; need to prove also that the embodiment of the invention is only issued in the bit stream mode the wavelength reachability information is one of more excellent execution mode, the similar published method of other nodal informations also all be should be embodiment of the invention protection range contain.Message bit stream and the pairing wavelength sequence of nodal information that release module 12 is used for generating are issued, and promptly by expansion IGP agreement message bit stream and the pairing wavelength sequence of nodal information that generates are flooded to other optical nodes.Node receiver module 13 is used to receive bit stream and the wavelength sequence that other optical nodes send; Node parsing module 14 is used for bit stream and wavelength sequence analysis that node receiver module 13 is received, thereby obtains the nodal information of other optical nodes, as the wavelength reachability information and the wavelength seizure condition information of other optical nodes.
Wherein, preferably, bit stream generation module 11 comprises that the wavelength reachability information generates submodule 111, is used for generating wavelength accessibility bit stream according to the wavelength reachability information between two TE Links on the described optical node.As a preferred embodiment, bit stream generation module 11 comprises that also wavelength seizure condition information generates submodule 112, is used for generating wavelength seizure condition bit stream according to the wavelength seizure condition information of TE Link on the described optical node.
Wherein, preferably, release module 12 also is used for when the wavelength reachability information is consistent with the pairing wavelength sequence of wavelength seizure condition information, wavelength accessibility bit stream and wavelength seizure condition bit stream are issued respectively, when issue wavelength seizure condition bit stream, issued pairing wavelength sequence.
Wherein, preferably, the embodiment of the invention can also be compressed the message bit stream that generates before the message bit stream that will generate and the pairing wavelength sequence of nodal information are issued, thereby as much as possible reduced the data volume of issue.Therefore this optical node 1 also comprises compression module 15 and corresponding decompression module 16, and compression module 15 is used for the message bit stream that described bit stream generation module generates is compressed; The data decompression that decompression module 16 is used for that node receiver module 13 is received is to send to node parsing module 14 behind the bit stream.
As shown in Figure 4, nodal information delivery system structure chart for the embodiment of the invention two, this system comprises optical node 2 and centralized calculation unit, path 3, optical node 2 is used for generating message bit stream according to the nodal information of self, and the message bit stream and the pairing wavelength sequence of nodal information that generate are issued to centralized calculation unit, path 3; Centralized calculation unit, path 3 is used for the nodal information that obtains optical node 2 according to the bit stream that receives and wavelength sequence.
Wherein, optical node 2 comprises bit stream generation module 21 and release module 22.Bit stream generation module 21 is used for generating message bit stream according to the nodal information of optical node 2, and nodal information comprises the wavelength reachability information of optical node, preferably, also needs to comprise the wavelength seizure condition information of this optical node; For example generate the wavelength accessibility bit stream shown in the table 4 according to the wavelength reachability information shown in the table 3; by nodal information being converted into corresponding bit stream; can greatly reduce the data volume of optical node issue; need to prove also that the embodiment of the invention only transforms the wavelength reachability information is one of more excellent execution mode, the similar transform mode of other nodal informations also all be should be embodiment of the invention protection range contain.Message bit stream and the pairing wavelength sequence of nodal information that release module 22 is used for generating are issued, and promptly by expansion IGP agreement message bit stream and the pairing wavelength sequence of nodal information that generates are flooded to other optical nodes.
Wherein, preferably, bit stream generation module 21 comprises that the wavelength reachability information generates submodule 211, is used for generating wavelength reachability information bit stream according to the wavelength reachability information between two TE Links on the optical node 2.As a preferred embodiment, bit stream generation module 21 comprises that also wavelength seizure condition information generates submodule 212, is used for generating wavelength seizure condition bit stream according to the wavelength seizure condition information of TE Link on the optical node 2.
Wherein, preferably, release module 22 also is used for when the wavelength reachability information is consistent with the pairing wavelength sequence of wavelength seizure condition information, wavelength accessibility bit stream and wavelength seizure condition bit stream are issued respectively, when issue wavelength seizure condition bit stream, issued pairing wavelength sequence.
Wherein, centralized calculation unit, path 3 comprises receiver module 31 and parsing module 32, and receiver module 31 is used to receive bit stream and the wavelength sequence that optical node 2 sends; Parsing module 32 is used for the nodal information that the bit stream that will receive and wavelength sequence analysis obtain optical node 2.
Wherein, preferably, the embodiment of the invention can also be compressed the message bit stream that generates before the message bit stream that will generate and the pairing wavelength sequence of nodal information are issued, thereby as much as possible reduced the data volume of issue.Therefore this optical node 2 also comprises compression module 23, and centralized calculation unit, path 3 also comprises corresponding decompression module 33.Compression module 23 is used for the message bit stream that described bit stream generation module generates is compressed, and the data decompression that decompression module 33 is used for that receiver module 31 is received is to send to parsing module 32 behind the bit stream.
By the above-mentioned nodal information delivery system of the embodiment of the invention, can generate message bit stream according to nodal information, reduced the data volume of optical node publisher node information effectively.And can nodal information be divided into static information and multidate information according to the characteristic of nodal information, optical node only needs the real-time release multidate information, thereby further reduces the data volume of optical node issue.
Through the above description of the embodiments, the mode that those skilled in the art can be well understood to the general hardware platform that the present invention can add by software realizes, can certainly pass through hardware, but the former is better execution mode under a lot of situation.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words can embody with the form of software product, this computer software product is stored in the storage medium, comprise that some instructions are with so that a computer equipment (can be a personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (22)
1, a kind of node information publishing method is characterized in that, may further comprise the steps:
Optical node generates message bit stream according to the nodal information of self;
Described optical node is issued the message bit stream and the pairing wavelength sequence of described nodal information that generate.
2, node information publishing method according to claim 1 is characterized in that, described nodal information comprises through the wavelength reachability information between two TE Links of described optical node, generates wavelength accessibility bit stream according to described wavelength reachability information.
3, as node information publishing method as described in the claim 2, it is characterized in that, when device initialize, equipment variations or capacity of equipment change, issue described wavelength accessibility bit stream.
As node information publishing method as described in the claim 2, it is characterized in that 4, described nodal information also comprises the wavelength seizure condition information through TE Link on the described optical node, generate wavelength seizure condition bit stream according to described wavelength seizure condition information.
As node information publishing method as described in the claim 4, it is characterized in that 5, described optical node periodically and/or send described wavelength seizure condition bit stream in real time.
6, node information publishing method according to claim 1 is characterized in that described nodal information comprises wavelength reachability information and wavelength seizure condition information, and described wavelength reachability information is consistent with the pairing wavelength sequence of described wavelength seizure condition information;
Described optical node is issued the message bit stream that generates and the pairing wavelength sequence of described nodal information specifically and is comprised:
Described optical node is issued respectively described wavelength accessibility bit stream and described wavelength seizure condition bit stream, issues pairing wavelength sequence when the described wavelength seizure condition bit stream of issue.
7, node information publishing method according to claim 1 is characterized in that, described optical node specifically comprises the message bit stream issue that generates:
Described optical node is flooded to the message bit stream of described generation by expansion IGP agreement each optical node or the centralized calculation unit, path of network.
8, node information publishing method according to claim 1 is characterized in that, and is after described optical node is issued the message bit stream that generates and the pairing wavelength sequence of described nodal information, further comprising the steps of:
Obtain the nodal information of described optical node according to the bit stream that receives and wavelength sequence.
9, node information publishing method according to claim 1 is characterized in that, before described optical node is with the message bit stream issue that generates, also comprises:
Described optical node compresses the message bit stream of described generation;
After described optical node is with the message bit stream issue that generates, also comprise:
The data decompression that receives is condensed to bit stream, obtains the nodal information of described optical node according to described bit stream and wavelength sequence.
10, a kind of nodal information delivery system, it is characterized in that, comprise at least two optical nodes, described optical node is used for generating message bit stream according to the nodal information of self, and the message bit stream and the pairing wavelength sequence of described nodal information that generate are issued to other optical nodes; The nodal information that bit stream that other optical nodes bases receive and wavelength sequence obtain described optical node.
11, a kind of nodal information delivery system is characterized in that, comprises optical node and centralized calculation unit, path,
Described optical node is used for generating message bit stream according to the nodal information of self, and the message bit stream and the pairing wavelength sequence of described nodal information that generate is issued to centralized calculation unit, path;
Centralized calculation unit, described path is used for the nodal information that obtains described optical node according to the bit stream that receives and wavelength sequence.
12, as nodal information delivery system as described in the claim 11, it is characterized in that centralized calculation unit, described path comprises receiver module and parsing module,
Described receiver module is used to receive bit stream and the wavelength sequence that described optical node sends;
Described parsing module is used for the nodal information that the bit stream that will receive and wavelength sequence analysis obtain optical node.
13, a kind of optical node is characterized in that, comprises bit stream generation module and release module,
Described bit stream generation module is used for generating message bit stream according to the nodal information of self;
Described release module is used for message bit stream and the pairing wavelength sequence issue of described nodal information that will generate.
14, as optical node as described in the claim 13, it is characterized in that, also comprise node receiver module and node parsing module,
Described node receiver module is used to receive bit stream and the wavelength sequence that other optical nodes send;
Described node parsing module is used for the nodal information that bit stream that described node receiver module is received and wavelength sequence analysis obtain other optical nodes.
As optical node as described in the claim 13, it is characterized in that 15, described bit stream generation module comprises that the wavelength reachability information generates submodule, be used for generating wavelength accessibility bit stream according to the wavelength reachability information between two TE Links on the described optical node.
As optical node as described in the claim 15, it is characterized in that 16, described bit stream generation module comprises that also wavelength seizure condition information generates submodule, be used for generating wavelength seizure condition bit stream according to the wavelength seizure condition information of TE Link on the described optical node.
17, as optical node as described in the claim 15, it is characterized in that, described release module also is used for when described wavelength reachability information is consistent with the pairing wavelength sequence of described wavelength seizure condition information, wavelength accessibility bit stream and wavelength seizure condition bit stream are issued respectively, when the described wavelength seizure condition bit stream of issue, issued pairing wavelength sequence.
18, as optical node as described in the claim 14, it is characterized in that, also comprise compression module, be used for the message bit stream that described bit stream generation module generates is compressed.
19, as optical node as described in the claim 18, it is characterized in that, also comprise decompression module, being used for the data decompression that described node receiver module receives is to send to described node parsing module behind the bit stream.
20, a kind of node information publishing method is characterized in that, may further comprise the steps:
Optical node generates wavelength accessibility bit stream according to the wavelength reachability information of self;
Described optical node is issued the wavelength accessibility bit stream and the wavelength seizure condition information that generate respectively.
21, as node information publishing method as described in the claim 20, it is characterized in that, also comprise: when described wavelength accessibility bit stream of issue or described wavelength seizure condition information, issue pairing wavelength sequence.
22, as node information publishing method as described in the claim 20, it is characterized in that, also comprise: when system initialization, issue pairing wavelength sequence.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101400005B (en) * | 2007-09-30 | 2012-08-08 | 华为技术有限公司 | Node information publishing method, system and device |
| CN102014040B (en) * | 2009-09-07 | 2012-10-03 | 华为技术有限公司 | Method and device for issuing traffic engineering properties |
| CN102726059A (en) * | 2011-12-08 | 2012-10-10 | 华为技术有限公司 | Method, apparatus and system for wavelength business information announcements |
| WO2016095610A1 (en) * | 2014-12-15 | 2016-06-23 | 中兴通讯股份有限公司 | Method and system for restoring optical layer service |
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2007
- 2007-09-30 CN CNA2008101896124A patent/CN101453670A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101400005B (en) * | 2007-09-30 | 2012-08-08 | 华为技术有限公司 | Node information publishing method, system and device |
| CN102014040B (en) * | 2009-09-07 | 2012-10-03 | 华为技术有限公司 | Method and device for issuing traffic engineering properties |
| CN102726059A (en) * | 2011-12-08 | 2012-10-10 | 华为技术有限公司 | Method, apparatus and system for wavelength business information announcements |
| WO2016095610A1 (en) * | 2014-12-15 | 2016-06-23 | 中兴通讯股份有限公司 | Method and system for restoring optical layer service |
| US10447399B2 (en) | 2014-12-15 | 2019-10-15 | Zte Corporation | Method and system for restoring optical layer service |
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