CN1521995A - A service substitution method - Google Patents
A service substitution method Download PDFInfo
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- CN1521995A CN1521995A CNA031039154A CN03103915A CN1521995A CN 1521995 A CN1521995 A CN 1521995A CN A031039154 A CNA031039154 A CN A031039154A CN 03103915 A CN03103915 A CN 03103915A CN 1521995 A CN1521995 A CN 1521995A
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Abstract
The invention discloses a service replacement method comprising the steps of, (1) determining whether the replacing services and the replaced services are located on the same crossing chip, or whether they can be arranged on the same corresponding portion of the different cross chip in accordance with the relationship of the replaced source or destination and the chips where the replacing source and destination locate, (2) directly modifying the crossing matrix of the same crossing chip, thus realizing the replacement of service route on the chip. (3) directly copying the unmodified routes.
Description
Technical field
The present invention relates to a kind of business replacement method, relate in particular to the business replacement method in 3 grades of CLOS (name, source see that application number is 96123295.1 and is called the Chinese patent application of " method of measurement of network congestion and equipment ") matrix cross chips.
Background technology
The core of SDH (synchronous digital hierarchy) equipment is a chi structure, along with the fast development of optical transport technology, the equipment cross-capacity is increasing, and often single chip crossing is limited, can not satisfy the requirement that big capacity intersects, so need the polylith cross chips to build jumbo intersection.In SDH equipment, generally adopt 3 grades of CLOS matrix structures to organize the method for these cross chips, form 3 grades of CLOS chi structures.As shown in Figure 1, adopt the high-capacity transmission equipment of 3 grades of CLOS chi structures, need the route of the corresponding 3 grades of CLOS matrix algorithm computing services of cover in 3 grades of CLOS structures.Its process is: the user proposes a service request, comprises a source and one night, i.e. black arrow part among the figure; 3 grades of CLOS matrix algorithms are responsible for calculating the route of this service request at 3 grades of CLOS internal matrixs, i.e. dotted portion among Fig. 1.
The protected mode of SDH equipment mainly comprises various multiplex section protections, SNC (subnet connection) protection etc.Various protection turning protocols all have the business replacement logic of a set of regulations, and for example the business replacement logic of two fine unidirectional multiplex section agreements is that business is switched to the baffle position from the working plate position.For example: (work) business replacement of the solid arrow of 1 grade of cross chips among Fig. 1 part (protection) business to the dotted arrow part.For 3 grades of CLOS matrix algorithms, need earlier Working service to be removed, the foundation protection is professional then.
Proposed a kind of 3 grades of CLOS matrix algorithms in the patent 021176736, and the complete algorithm flow process of how calculating and distributing a professional route be provided: in 3 grades of CLOS matrixes, realized the method for professional routing configuration, may further comprise the steps:
A. read the source and the place data of current business, and judge whether this business is broadcasting service, if not, then enter step b, otherwise, judge in three grades of current chips 3 whether the idle port resource is arranged, if have, then set up this broadcasting service, finish after returning success information, if no, finish after then returning failure information;
B. to all counter orderings of chip inbound port correspondence under the current business place, the second level chip of the counter correspondence that the value of setting is maximum is current intermediate chip;
C. under the current business source in the chip, judge with current intermediate chip corresponding output port part whether idle port is arranged,, then set up the connection between current business source and the place, finish after returning success information if having; Otherwise, judge whether to travel through all counters, if not, the second level chip that next counter correspondence then is set in proper order is current intermediate chip, returns step c; Otherwise, adjust existing the connection, judge whether that the idle port of current business source or Su Suoxu discharges, if having, then set up the connection between current business source and the place, finish after returning success information; Otherwise, finish after returning failure information.This algorithm can be realized the calculating and the distribution of general service, broadcasting service efficiently according to above-mentioned principle, and it is joined passband and in most of the cases reaches 100%.
This algorithm is joined the not high shortcoming of passband at original 3 grades of CLOS matrixes more for a long time in broadcasting service, has proposed a cover sophisticated service route assignment algorithm, and relevant allocation flow.This algorithm is also effectively adjusted and shift strategy by a cover; can solve the problem that business is joined passband by 2 recurrence; overcome original 3 grades of CLOS algorithms owing to use the deep layer recurrence, caused inefficient shortcoming, made SDH equipment can satisfy of the requirement of various protected modes switching time.
" the source replacement " of existing algorithm supporting business route, " place replacement " etc. can be supported various multiplex section protection exchangings and SNC protection and kinds of protect mixed networking.But existing algorithm does not provide the calculation process of business replacement.In fact, the flow process of business replacement and replacement policy have great influence to replacing efficient.Along with the cross-capacity of SDH equipment is increasing, once protection is switched the required professional bar number of switching and recovering and will be become very big, for example for a four fiber complex section protection that constitutes by the 40G wiring board, the professional bar number of once switching and need recovering to replace is 256 * 2 (be that the source is replaced 256, the place is replaced 256); If add extra traffic, then once switch and the professional bar number that recovers to relate to will reach 256 * 2 * 2.In this case, business replacement strategy and replacement flow process, can will satisfying iTU-T to equipment, G.841 the 50ms multiplex section rearrangement time of middle regulation produces fundamental influence.
Though what existing 3 grades of CLOS algorithms had solved 3 grades of CLOS matrixes effectively joins the passband problem, existing algorithm do not provide one rationally, effectively business replacement strategy and complete replacement flow process.In 3 grades of CLOS matrix algorithms, the general employing removed Working service earlier, and then sets up the professional mode of protection and finish the required business replacement function of various protected modes.Yet after tested, this business replacement method efficient is very low, might be able to not satisfy the switching time demand of current bigger capacity SDH equipment.For example, two fine the sharing of forming at the 10G wiring board under the configuration of multiplex section multiplex section protections by removing the professional mode of setting up again earlier, are about that (test environment is: MPC8260, dominant frequency 200 about 6ms the business replacement time.Comprise the extra traffic that full configuration is put).Calculate that according to this then under the two fine shared multiplex section protection configurations that the 40G wiring board is formed, the business replacement time is about 4 * 6ms=24ms.For the 50ms multiplex section rearrangement time of stipulating among the iTU-TG.841, the algorithm computation overlong time of 24ms.
Tracing it to its cause, is because dismounting process professional and that reconstruction is professional is very consuming time, especially the latter.Once adjust and the secondary adjustment if need to relate in the reconstruction business procedure, then switching time will significantly rise.
Summary of the invention
Purpose of the present invention is exactly in order to overcome the above problems, and proposes a kind of business replacement method, and route need not removed and rebuild to this method, thereby shortened the business replacement time greatly.
For achieving the above object, the present invention proposes a kind of business replacement method, it is characterized in that comprising while or the following steps of carrying out successively: 1) according to the source that is replaced or the relation of place and replacement source or place, place chip, judge whether whether replace business professional and that be replaced is positioned on the same cross chips, perhaps can be arranged on the same counterpart of different cross chips; 2) if replacing business professional and that be replaced is positioned on the same cross chips, then directly revise the cross matrix of this same cross chips, realize the replacement of professional route on this chip; If replace the same counterpart that professional and the business that is replaced can be arranged to be positioned at different cross chips, the business of replacement and the same counterpart of the business that is replaced by different cross chips then are set earlier, upgrade cross matrix and the chip at renewal source or place, place and the route between the double-path chip (2) of the chip at source or place, place then, make the business of replacement and the business that is replaced on double-path chip (2), walk same cross chips, directly revise the cross matrix of this double-path chip (2) then, realize the replacement of professional route on this chip; 3) to above-mentioned steps 1), 2) in unmodified route directly duplicate.
Owing to adopted above scheme; a Working service and the professional same part that is positioned at same cross chips or different cross chips of protection; Working service and protection business are walked same secondary cross chips; can directly revise or duplicate the cross chips matrix; the business that does not need deletion earlier to be replaced is rebuild the business of replacement again; promptly need not search for suitable route; especially do not need professional the rearrangement; thereby shortened the replacement time greatly, the algorithm computation time ratio that uses this method that protection is switched does not use 3 times of the required time decreased of this replacement algorithm.
Description of drawings
Fig. 1 is the schematic diagram of 3 grades of CLOS chi structures of prior art;
Fig. 2 is the schematic diagram of first kind of embodiment of business replacement method of the present invention;
Fig. 3 is the schematic diagram of second kind of embodiment of business replacement method of the present invention;
The schematic diagram of the third embodiment of Fig. 4 business replacement method of the present invention;
The flow chart of Fig. 5 business replacement method of the present invention.
Embodiment
Also the present invention is described in further detail in conjunction with the accompanying drawings below by specific embodiment.
Embodiment one: Working service and protection business are positioned on the cross chips, in replacement process, have guaranteed that promptly the business and the replacement business that are replaced are positioned on the same cross chips, and Fig. 1 has shown the process that the source of business is replaced.In these cases; the route (dotted portion) that protection is professional is only different on the one-level chip with the route (solid line part) of Working service; then only need directly to revise the cross matrix of one-level chip 1, just can realize business replacement, do not need to remove and rebuild route.And the professional other parts route of protection only needs the route of direct replication work business to get final product.Therefore, in this case, the business replacement time only is to revise one-level chip 1 matrix to add the time of duplicating route, and compole is short at that time, even can ignore.
Is common for Working service and the professional this situation that is arranged in a cross chips of protection in network element configuration.For example, intersecting on the same cross chips under many light mouth veneer is not shared the same light mouthful, and when these light mouths are formed any one protected mode, its Working service and protection business one are positioned on the same chip.
Embodiment two: as shown in Figure 2; the business that is replaced (Working service) belongs to two different chips with the business of replacing (protection is professional); the route of the business that is replaced (Working service) is walked certain part (i part) on one-level chip 1; and the counterpart (i part) of replacing professional (protection is professional) place chip has the free time; then arrange professional this part (i part) together of on the protection chip, also walking of protection, can guarantee to replace business professional and that be replaced this moment and on double-path chip 2, walk same cross chips.And on three grades of cross chips, do not change.So just do not need to rebuild route by calculating.As shown in Figure 3, only need the black solid line of Working service route is partly replaced with the dotted portion of the professional route of protection, and directly revise the cross matrix of place, replacement source chip and replace the cross matrix of the route between place, source chip and the double-path chip 2; For unmodified part is three grades of cross matrixes, directly duplicates, and can finish business replacement.
Embodiment three: as shown in Figure 4; the business that is replaced (Working service) belongs to two different chips with the business of replacing (protection is professional); the route of Working service is walked certain part (i part) on one-level chip 1; but protect the counterpart (i part) of professional place chip not have the free time; if the source of Working service is a broadcasting service; then should utilize adjustment algorithm earlier; it is 021176736 patent application that this algorithm is asked for an interview number of patent application; partly adjust an idle outlet from the i of protection chip; professional and the protection business of arranging work is again walked the same counterpart (i part) of different cross chips; replacing business professional and that be replaced this moment is walking on the double-path chip 2 on the same cross chips; can directly revise the cross matrix of firsts and seconds, duplicate three grades cross matrix.Thereby Working service can directly be substituted on the protection business.
The dismounting of broadcasting service and reconstruction are very consuming time.For the broadcast source that a fanout is n, its business replacement need be removed n bar business altogether, and rebuilds n bar business.What is more important, the calculating of setting up broadcasting service is very complicated, and the business that influences is joined passband.And adopt above-mentioned elder generation to adjust the method for directly replacing then, just can avoid the deletion and the reconstruction of broadcasting service, thereby greatly improve switching services efficient.
For the foregoing description is the process that the source of business is replaced, also similar with it to the replacement of professional place.In addition, promptly to return Working service from the protection business replacement also similar with it in the protection replacement of switching recovery.
For the business that adopts said method still can not directly replace, then adopt and remove Working service earlier, set up the professional flow process of protection then.
As shown in Figure 5, be to adopt business replacement method of the present invention (being called professional directly replacement method) to carry out the flow chart of business replacement, it supports the business replacement of various protected modes.Source replacement process with a business among the figure is an example.Professional place replacement process and source replacement process are similar.For returning Working service from the protection business recovery, processing procedure identical with replacement process (it is professional just the Working service among Fig. 5 to be changed into protection).
In the prior art, employing be that business that deletion earlier is replaced is built and replaced professionally, and replace in the professional routing procedure rebuilding, need the suitable route of search, especially may need professional the rearrangement, cause consuming the plenty of time.And use the present invention adopts professional directly replacement method need not rebuild route, does not also just have search and professional the rearrangement, so can save the plenty of time.
Claims (5)
1. business replacement method, it is characterized in that comprising while or the following steps of carrying out successively: 1) according to the source that is replaced or the relation of place and replacement source or place, place chip, judge whether whether replace business professional and that be replaced is positioned on the same cross chips, perhaps can be arranged on the same counterpart of different cross chips; 2) if replacing business professional and that be replaced is positioned on the same cross chips, then directly revise the cross matrix of this same cross chips, realize the replacement of professional route on this chip; If replace the same counterpart that professional and the business that is replaced can be arranged to be positioned at different cross chips, the business of replacement and the same counterpart of the business that is replaced by different cross chips then are set earlier, upgrade cross matrix and the chip at renewal source or place, place and the route between the double-path chip (2) of the chip at source or place, place then, make the business of replacement and the business that is replaced on double-path chip (2), walk same cross chips, directly revise the cross matrix of this double-path chip (2) then, realize the replacement of professional route on this chip; 3) to above-mentioned steps 1), 2) in unmodified route directly duplicate.
2. a kind of business replacement method as claimed in claim 1 is characterized in that: the business that is replaced is that Working service or protection are professional.
3. a kind of business replacement method as claimed in claim 1 or 2, it is characterized in that: the business of will replacing comprises with the same counterpart that the business setting that is replaced becomes to be positioned at different cross chips: when the business of replacing is positioned at different cross chips with the business that is replaced, and the counterpart of replacing professional place cross chips has the free time, then arranges the replacement business to walk this same counterpart.
4. a kind of business replacement method as claimed in claim 1 or 2, it is characterized in that: when described replacement business is positioned at different cross chips with the business that is replaced, there is not the free time if replace the counterpart of professional place cross chips, then utilize adjustment algorithm, this part of the professional place of replacement cross chips is adjusted into an idle outlet, arranges the business of replacing and the business of being replaced to walk the same counterpart of different cross chips.
5. a kind of business replacement method as claimed in claim 4 is characterized in that: the described business that is replaced is a broadcasting service.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03103915 CN1286294C (en) | 2003-01-28 | 2003-01-28 | A service substitution method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03103915 CN1286294C (en) | 2003-01-28 | 2003-01-28 | A service substitution method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1521995A true CN1521995A (en) | 2004-08-18 |
| CN1286294C CN1286294C (en) | 2006-11-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03103915 Expired - Fee Related CN1286294C (en) | 2003-01-28 | 2003-01-28 | A service substitution method |
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| CN (1) | CN1286294C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103152258A (en) * | 2013-01-31 | 2013-06-12 | 烽火通信科技股份有限公司 | Multicast protection device and method |
| CN114050885A (en) * | 2021-08-30 | 2022-02-15 | 国网山东省电力公司信息通信公司 | POS optical port-based rapid cut-over method for convergence service channel |
-
2003
- 2003-01-28 CN CN 03103915 patent/CN1286294C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103152258A (en) * | 2013-01-31 | 2013-06-12 | 烽火通信科技股份有限公司 | Multicast protection device and method |
| CN103152258B (en) * | 2013-01-31 | 2015-08-19 | 烽火通信科技股份有限公司 | Multicast protection device and method |
| CN114050885A (en) * | 2021-08-30 | 2022-02-15 | 国网山东省电力公司信息通信公司 | POS optical port-based rapid cut-over method for convergence service channel |
| CN114050885B (en) * | 2021-08-30 | 2023-06-09 | 国网山东省电力公司信息通信公司 | Convergence service channel cutting-over method based on POS optical port |
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| Publication number | Publication date |
|---|---|
| CN1286294C (en) | 2006-11-22 |
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