CN101150479A - Sub-wavelength switching and multicast method for optical transmission loop network - Google Patents
Sub-wavelength switching and multicast method for optical transmission loop network Download PDFInfo
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Abstract
The invention discloses a subwavelength inversion and frustration method used for an optical transmission ring network, which includes: when a first connection between two adjacent nodes in the ring network goes wrong, each direction of the two nodes at both sides of the first connection is inverted towards the other, and the connection which bears the subwavelength services on the first connection after the inversion, is used as the protective connection of the first connection; when a second connection between the two nodes besides the first connection goes wrong, each direction of the two nodes at both sides of the second connection is inverted towards the other; if the subwavelength services in the ring network can not be implemented after the inversions on the first connection and the second connection, frustrations are carried out by disabling the nodes at two terminals of the subwavelength services, corresponding to the ports where the subwavelength services can not be implemented. The invention ensures the protective inversion shared by channels, based on the subwavelength service granularity, and the corresponding frustrations are realized.
Description
Technical field
The present invention relates to the communications field, and especially, relate to and a kind ofly be used to adopt the wavelet length of the optical transmission loop network of wave division multiplexing WDM (Wavelength Division Multiplexing) technology to switch and organize mistake (squelching/prevent misconnections) method.
Background technology
In present optical transport network, the loop network structure has obtained the generally approval of industry with its good self-healing survival ability.Along with the continuous development of loop network resist technology, two fine channels share loop network resist technologies with its switch fast, characteristics such as network wavelength utilance height, obtained application more and more widely in the optical communication field.
For technology realization and application that the channels share loop network of present industry is protected; owing to be mainly wavelength business (bandwidth capacity of a wavelength is only distributed to a business) on the pairing loop network loaded service granularity; so pairing resource granularity corresponding wavelength granularity is too switched in the loop network protection, corresponding protection switching operation is also just directly realized switching getting final product at the upper and lower circuit node of wavelength business.
Yet, along with increasing carrier wavelength convergence service in the optical-fiber network application, based on the purpose that makes full use of the band width in physical that transmission network provides, as shown in Figure 1, capacity for same wavelength carries the sub-rate business of a plurality of low bandwidth simultaneously by the sub-speed ethod of remittance, but because the long professional upper and lower circuit node of a plurality of wavelets of same wavelength carrying can be different, the mode that just can not simply switch at the upper and lower circuit node of service wavelength of switching operation has realized like this.
For the wrong processing mode of business resistance of channels share loop network protection, the present great majority of industry are according to existing industry standard.At first, judge the professional wrong situation that connects that after switching generation, whether may occur according to the distribution situation of loop network business in loop network; Then, realize professional resistance fault reason by the mode of turn-offing professional sending ending equipment, this error connection prevention mode is that other situation of wavelength level is more suitable for the granularity of loop network bearer service, but the granularity for loop network institute bearer service is that wavelet is grown rank (promptly, a wavelength capacities can be carried a plurality of business simultaneously) situation just can not be suitable for, main cause is:
On the one hand, the long professional distribution situation of a plurality of wavelets of carrying in the same wavelength (mainly refer to professional in loop network on circuit node, circuit node down) may be different (for example, can be the situation shown in Fig. 3), also will have nothing in common with each other to whether needing to hinder wrong judged result from each professional angle like this, so need hinder the fault reason respectively at the long professional distribution of each wavelet, and this be at present can't realize;
On the other hand, because what the long professional transmitting terminal of a plurality of wavelets of parallel convey was shared in same wavelength is the same transmission laser apparatus of setting out on a journey, so also just can not realize that the resistance fault of the long business of certain wavelet manages by the set out on a journey mode of transmitting apparatus of direct shutoff.
At the problems referred to above, effective solution is not proposed as yet at present.
Summary of the invention
Consider the problems referred to above and make the present invention; for this reason; main purpose of the present invention is to provide a kind of wavelet length that is used for optical transmission loop network to switch and organize wrong scheme, and this scheme can be supported the channels share loop network protection of the long professional granularity of wavelet to switch and hinder mistake.
According to embodiments of the invention, provide a kind of wavelet length that is used for optical transmission loop network to switch and organize wrong method.
This method comprises: first between adjacent two nodes in loop network connect under the situation about going wrong, each node in two nodes of the first connection both sides is switched respectively toward each other, gone up the professional connection of wavelet length as the first protection connection that connects switching back carrying first connection; Between two nodes except first connects in loop network second connect under the situation about going wrong, and each node in two nodes of the second connection both sides is switched respectively toward each other; To first connect is connected with second switch after, if the long business of the wavelet in the loop network can't realize that then the node by the long professional two ends of wavelet that can't realize hinders mistake at the port shutdown of the wavelet length business that can't realize.
To first connect and/or second connect switch before, further comprise: to the Automatic Protection Switching Control configuration protection group information of each node in the loop network.
Wherein, protection group information comprises that protection type, echo plex mode, Wait-to-Restore setting, loop network node networking topology information, APS detect veneer, APS is carried out the physical address port information of veneer, the business information model that the protection group relates to.
At this moment, the business information model is the distribution on the long professional a plurality of nodes in loop network of each wavelet in the loop network.And, under the reference wavelength direction of appointment, when the long professional node in loop network of each wavelet in the loop network exists arbitrary wavelet length to set out on a journey, and not existing under long road down of arbitrary wavelet and the straight-through situation, the state of node is for setting out on a journey; When the long professional node in loop network of each wavelet in the loop network exist arbitrary wavelet long under the road, and do not exist arbitrary wavelet length set out on a journey and situation about lead directly under, the state of node under the road; When the long professional node in loop network of each wavelet in the loop network exist simultaneously arbitrary wavelet length set out on a journey and the norator wavelength under the road or exist simultaneously arbitrary wavelet length set out on a journey and straight-through, the arbitrary wavelet of norator wavelength long under under the straight-through situation of road and norator wavelength, the state of node be about the road.
In addition, in the method, judge node and the wrong node of needs resistance that needs are switched, and switch by the execution of auto switching controller according to the protection group information that comprises node state.
And the mode that first two nodes that connect both sides are switched is: first two nodes channel switching toward each other that connects both sides is the passage towards itself.
In addition, the mode that second two nodes that connect both sides are switched is: second two nodes channel switching toward each other that connects both sides is the passage towards itself.Stagger the time hindering, close in the receiving equipment of long professional two end nodes of wavelet that can't realize and separate the following road port that converges corresponding to the long professional business of the wavelet that can't realize.
By technique scheme of the present invention, can realize switching and corresponding error connection prevention based on the channels share protection of the long professional granularity of wavelet.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the professional schematic diagram of two fine channels share looped network medium wavelength carrier wavelength according to correlation technique;
Fig. 2 is a flow chart of switching and organize wrong method according to the wavelet length that is used for optical transmission loop network of the embodiment of the invention;
Fig. 3 is the schematic diagram according to two fine channels share looped network carrier wavelength service distribution of the embodiment of the invention;
Fig. 4 is a flow chart of switching and organize the processing example of wrong method according to the wavelet length that is used for optical transmission loop network of the embodiment of the invention;
Fig. 5 is the schematic diagram of structure example 1 of realizing switching and organizing according to the wavelet length of the embodiment of the invention loop network of wrong method;
Fig. 6 is the schematic diagram of structure example 2 of realizing switching and organizing according to the wavelet length of the embodiment of the invention loop network of wrong method; And
Fig. 7 is the schematic diagram of structure example 3 of realizing switching and organizing according to the wavelet length of the embodiment of the invention loop network of wrong method.
Embodiment
In the present embodiment, provide a kind of wavelet length that is used for optical transmission loop network to switch and organize wrong method.
As shown in Figure 2, switching and organize wrong method according to the wavelet length that is used for optical transmission loop network of the embodiment of the invention comprises: step S202, between adjacent two nodes in loop network first connect under the situation about going wrong, each node in two nodes of the first connection both sides is switched respectively toward each other, gone up the professional connection of wavelet length as the first protection connection that connects switching back carrying first connection; Step S204, second between two nodes except first connects in loop network connect under the situation about going wrong, and each node in two nodes of the second connection both sides is switched respectively toward each other; Step S206, to first connect be connected with second switch after, if the long business of the wavelet in the loop network can't realize, then long professional port shutdown hinders mistake to the node by the long professional two ends of wavelet that can't realize at the wavelet that can't realize.
To first connect and/or second connect switch before, further comprise: to the APS controller configuration protection group information of each node in the loop network.
The implication of the protection group of saying here is meant the self attributes of the protection configuration of a certain type of an intranodal, relates to the address of veneer and the general designation of port.Protection group information comprises that protection type, echo plex mode, Wait-to-Restore setting, loop network node networking topology information, APS detect veneer, APS carries out the physical address port information of veneer, the business information model that the protection group relates to.
Above-mentioned business information model is meant the business operation type (professional in the setting out on a journey of present node, road and pass-through state down) of each node that loop network comprises, that is the distribution on the long professional a plurality of nodes in loop network of each wavelet in the loop network.The Working service of considering the loop network carrying generally is two-way, therefore be benchmark definition (professional) with the business of a certain wavelength direction (loop network clockwise or counterclockwise, the not necessarily same wavelength of the operation wavelength of both direction here) in the setting out on a journey of present node, road and pass-through state situation down.Under the reference wavelength direction of appointment, when the long professional node in loop network of each wavelet in the loop network exists arbitrary wavelet length to set out on a journey, and do not exist under long road down of arbitrary wavelet and the straight-through situation, the state of node is " (Add) sets out on a journey "; When the long professional node in loop network of each wavelet in the loop network exist arbitrary wavelet long under the road, and do not exist arbitrary wavelet length set out on a journey and situation about leading directly under, the state of node is " following road (Drop) "; When the long professional node in loop network of each wavelet in the loop network exist simultaneously arbitrary wavelet length set out on a journey and the norator wavelength under the road or exist simultaneously arbitrary wavelet length set out on a journey and straight-through, the arbitrary wavelet of norator wavelength long under under the straight-through situation of road and norator wavelength, the state of node is " road (AddDrop) up and down ".
In addition, in the method, judge node and the wrong node of needs resistance that needs are switched, and switch by the execution of auto switching controller according to the protection group information that comprises node state.
And the mode that first two nodes that connect both sides are switched is: first two nodes channel switching toward each other that connects both sides is the passage towards itself.
The mode that second two nodes that connect both sides are switched is similar with the mode that first two nodes that are connected both sides are switched, that is, be passage towards itself with two nodes channel switching toward each other of the second connection both sides.Stagger the time hindering, close in the receiving equipment of long professional two end nodes of wavelet that can't realize and separate the following road port that converges corresponding to the long professional business of the wavelet that can't realize.
Specifically can be referring to being described for example below in conjunction with Fig. 3.
In the example of loop network shown in Figure 3; comprise 4 sub-wavelength in each wavelength of network protection; solid line is represented the long bearer service of corresponding wavelet, and dotted line represents that corresponding wavelet length does not have bearer service, and the operation wavelength that it should be noted that the loop network both direction here is not same wavelength.
At first, determine that the up time needle ring direction (direction arrow from left to right) of ring is a reference direction, judge the business operation type of each node.At the A node, the long loaded service of all wavelets is all set out on a journey, and does not have road or straight-through under the long loaded service of wavelet, so the business operation type definition of node A is " (Add) sets out on a journey ".In Node B, there is road under the sub-wavelength loaded service, other two sub-wavelength loaded service are straight-through, so the business operation type definition of Node B is " road (AddDrop) up and down ".At node C, exist a sub-wavelength loaded service to set out on a journey and two professional leading directly to of sub-wavelength, so the business operation type definition of node C is " road (AddDrop) up and down ".At node D, exist two sub-wavelength loaded service straight-through, a sub-wavelength loaded service is descended the road earlier, is set out on a journey then, so the business operation type definition of node D is " road (AddDrop) up and down ".At node E, the long loaded service of all wavelets all leads directly to, and does not exist the long loaded service of wavelet to set out on a journey or following road, so the business operation type definition of node E is " straight-through (Pass) ".At the F node, the long loaded service of all wavelets all are roads down, do not exist wavelet long loaded service to set out on a journey or straight-through, so the business operation type definition of node F is " following road (Drop) ".In addition, at node G, the wavelet of present node operation wavelength is long does not carry any business, because this situation does not influence and switches processing, the action type of node G is defined as " not having professional ".
By top narration as can be seen, said here business information is not specifically at long a certain the business of being carried of wavelet of the operation wavelength of ring, but at the integrated information of the long institute of all wavelets bearer services of the operation wavelength of ring.
In conjunction with Fig. 4, when realization is switched according to the protection of the embodiment of the invention and hindered wrong method, specifically can comprise following processing:
Step (1), the result according to judging before protects information configuration to the APS controller at each node place;
Step (2), the APS controller is monitored the malfunction of place loop network node in real time, behind the alarm information that receives network fault reporting, start the APS agreement (following G.841 agreement of ITU) of loop network, each node is in conjunction with the node traffic action type information described in the top step (1), switches single striding under the segment fault situation according to carry out the mode protection that the both-end wavelength switches in the fault sides adjacent of the nearest professional upper and lower circuit node of the distance fault section of striding;
Step (3), share the professional error connection prevention processing that loop network is switched for loop network multi-span situation lower channel, with the wavelength ring of clockwise and counterclockwise both direction according to comprising wavelet long number order be divided into the long ring of a plurality of wavelets, follow the G.841 decision principle of agreement of ITU-T, on the service distribution information basis of the long ring of wavelet, judge, long professional for the wrong wavelet of needs resistance, separate the mode that converges road port under the output branch road by the business of closing the corresponding receiving device of this wavelet length and realize.
Present invention is described below in conjunction with the example of concrete scene.
Example 1
Share in the wavelength division multiplexed optical network of looped network at two fine looped networks shown in Figure 5; the signal rate of the looped network operation wavelength passage carrying that the protection group relates to is the STM-64 frame format, can carry the long service signal of wavelet of 4 road STM-16 frame formats simultaneously in the mode that each node converges by sub-speed.The long business of the wavelet indicated among the figure is to describe with the form of two-way services, and for example, professional T1 represents the two-way services of the wavelet long 1 of carrying on the operation wavelength between node A, the B.2. 1. label among the figure represent the sequencing that fault takes place.
For the scene shown in Fig. 5, main implementation step is as follows:
At first, by webmaster the APS controller of each node in the network is protected the group information configuration.Determine that according to the long service distribution situation of the wavelet of carrying on the looped network operation wavelength business operation type of each node in the looped network is: node A is " (Add) sets out on a journey "; Node B, C and D are " road (AddDrop) up and down "; Node E is " straight-through (Pass) "; Node F is " following road (Drop) "; Node G is " not having professional ";
Second step; the APS controller is monitored the malfunction of place looped network node in real time; behind the alarm information that receives network fault reporting, start the APS agreement (following the ITUG.841 agreement) of looped network; the node traffic action type information that each node was described in conjunction with top second step is switched according to carry out the mode protection that the both-end wavelength switches in the fault sides adjacent of the nearest professional upper and lower circuit node of the distance fault section of striding.For looped network protection example shown in Figure 4, after 1. the section of striding AB (section of striding between node A and the Node B) at first breaks down, determine to switch implementation status by initiation and execute protection turning protocol: node A carries out wavelength channel right side (sides adjacent of the fault section of striding AB) and switches, Node B is carried out wavelength channel left side (sides adjacent of the fault section of striding AB) and is switched, that is to say, with the business that originally the is delivered to B A that turns back from A, arrive B from the another one direction, the business that simultaneously will be originally be delivered to A from the B B that turns back, arrive A from the another one direction, at this moment, the another one direction can be called the protection passage with respect to the two-way services passage before A and the B before;
Subsequently, after 2. the section of striding BC (section of striding between Node B and the node C) breaks down, determine to switch implementation status by initiation and execute protection turning protocol: the B node is owing to all break down in both sides, and both sides all need to carry out wavelength channel and switch equivalence operation for cancelling switching operation; Node C carries out wavelength channel left side (sides adjacent of the fault section of striding BC) and switches;
Next, share the professional error connection prevention processing that looped network is switched for looped network multi-span situation lower channel, with the wavelength ring of clockwise and counterclockwise both direction according to comprising wavelet long number order be divided into 4 sub-wavelength rings, follow the G.841 decision principle of agreement of ITU-T, on the service distribution information basis of the long ring of wavelet, judge:
(1) is the long ring of 1 wavelet for the wavelet trombone, may takes place wrong the company, so do not need professional resistance fault reason owing to be subjected to fault effects less than the long business of wavelet;
(2) be the long ring of 2 wavelet for the wavelet trombone, owing to all break down on the active channel of the long professional T1 of wavelet and the protection path may take place professional wrong the company, so the mode that needs respectively to separate the following road port that converges in the business of receiving equipment that node A and Node B are closed the two-way services correspondence of T1 representative realizes professional error connection prevention;
(3) being the long ring of 3 wavelet for the wavelet trombone, all is that service aisle is affected owing to be subjected to the long professional T4 of the wavelet of fault effects, so do not need professional resistance fault reason;
(4) being the long ring of 4 wavelet for the wavelet trombone, all is that service aisle is affected owing to be subjected to the long professional T6 of the wavelet of fault effects, so do not need professional resistance fault reason.
Example 2
Share in the wavelength division multiplexed optical network of looped network at two fine looped networks shown in Figure 6; similar with example 1; the signal rate of the looped network operation wavelength passage carrying that the protection group relates to is the STM-64 frame format, can carry the long service signal of wavelet of 4 road STM-16 frame formats simultaneously in the mode that each node converges by sub-speed.The long business of the wavelet indicated among Fig. 6 is to describe with the form of two-way services, and for example, the professional T1 among Fig. 6 represents the two-way services of the wavelet long 1 of carrying on the operation wavelength between node A, the B.2. 1. label among Fig. 6 represent the sequencing that fault takes place.
For the scene shown in Fig. 6, main implementation step is as follows:
At first, by webmaster the APS controller of each node in the network is protected the group information configuration.Determine that according to the long service distribution situation of the wavelet of carrying on the looped network operation wavelength business operation type of each node in the looped network is: node A is " (Add) sets out on a journey "; Node B, C, D are " road (AddDrop) up and down "; Node E is " straight-through (Pass) "; Node F is " following road (Drop) "; Node G is " not having professional ";
Afterwards, the APS controller is monitored the malfunction of place looped network node in real time, behind the alarm information that receives network fault reporting, start the APS agreement (following G.841 agreement of ITU) of looped network, the node traffic action type information that each node was described in conjunction with top second step is switched according to carry out the mode protection that the both-end wavelength switches in the fault sides adjacent of the nearest professional upper and lower circuit node of the distance fault section of striding;
For looped network protection example shown in Figure 6; after 1. the section of striding AB (section of striding between node A and the Node B) at first breaks down; determine to switch implementation status by initiation and execute protection turning protocol: node A carries out wavelength channel right side (sides adjacent of the fault section of striding AB) and switches, and Node B is carried out wavelength channel left side (sides adjacent of the fault section of striding AB) and switched.Subsequently after 2. the section of striding EF (section of striding between node E and the node F) breaks down, determine to switch implementation status by initiation and execute protection turning protocol: be respectively node D and node F at the nearest professional upper and lower circuit node of the distance fault section of striding, node D carries out wavelength channel right side (sides adjacent of the fault section of striding EF) and switches; Node F carries out wavelength channel left side (sides adjacent of the fault section of striding EF) and switches;
Then, share the professional error connection prevention processing that looped network is switched for looped network multi-span situation lower channel, with the wavelength ring of clockwise and counterclockwise both direction according to comprising wavelet long number order be divided into 4 sub-wavelength rings, follow the G.841 decision principle of agreement of ITU-T, on the service distribution information basis of the long ring of wavelet, judge:
(1) be the long ring of 1 wavelet for the wavelet trombone, owing to all break down on the active channel of the long professional T2 of wavelet and the protection path may take place professional wrong the company, so the mode that needs respectively to separate the following road port that converges in the business of receiving equipment that node C and node F close the two-way services correspondence of T2 representative realizes professional error connection prevention;
(2) be the long ring of 2 wavelet for the wavelet trombone, owing to all break down on the active channel of the long professional T1 of wavelet and the protection path may take place professional wrong the company, so the mode that needs respectively to separate the following road port that converges in the business of receiving equipment that node A and Node B are closed the two-way services correspondence of T1 representative realizes professional error connection prevention;
(3) being the long ring of 3 wavelet for the wavelet trombone, all is that service aisle is affected owing to be subjected to the long professional T4 of the wavelet of fault effects, so do not need professional resistance fault reason;
(4) be the long ring of 4 wavelet for the wavelet trombone, owing to all break down on the active channel of the long professional T6 of wavelet and the protection path may take place professional wrong the company, so the mode that needs respectively to separate the following road port that converges in the business of receiving equipment that node A and node D close the two-way services correspondence of T6 representative realizes professional error connection prevention; Owing to all break down on the active channel of the long professional T7 of wavelet and the protection path may take place professional wrong the company, so the mode that needs respectively to separate the following road port that converges in the business of receiving equipment that node D and node F close the two-way services correspondence of T7 representative realizes professional error connection prevention.
Example 3
Share in the wavelength division multiplexed optical network of looped network at two fine looped networks shown in Figure 7; similarly; the signal rate of the looped network operation wavelength passage carrying that the protection group relates to is the STM-64 frame format, can carry the long service signal of wavelet of 4 road STM-16 frame formats simultaneously in the mode that each node converges by sub-speed.The long business of the wavelet indicated among Fig. 7 is to describe with the form of two-way services, and for example professional T1 represents the two-way services of the wavelet long 1 of carrying on the operation wavelength between node A, the B.2. 1. label among Fig. 7 represent the sequencing that fault takes place.
For scene shown in Figure 7, main implementation step is as follows:
At first, the APS software download of supporting the shared ring protection of sub-wavelength passage to switch is arrived in the APS controller of transmission system node;
Then, by webmaster the APS controller of each node in the network is protected the group information configuration.Determine that according to the long service distribution situation of the wavelet of carrying on the looped network operation wavelength business operation type of each node in the looped network is: node A is " (Add) sets out on a journey "; Node B, C, D are " road (AddDrop) up and down "; Node E is " straight-through (Pass) "; Node F is " following road (Drop) "; Node G is " not having professional ";
Afterwards; the APS controller is monitored the malfunction of place looped network node in real time; behind the alarm information that receives network fault reporting, start the APS agreement (following G.841 agreement of ITU) of looped network; the node traffic action type information that each node was described in conjunction with top second step is switched according to carry out the mode protection that the both-end wavelength switches in the fault sides adjacent of the nearest professional upper and lower circuit node of the distance fault section of striding.For looped network protection example shown in Figure 6; after 1. the section of striding GA (section of striding between node G and the node A) at first breaks down; determine to switch implementation status by initiation and execute protection turning protocol: owing to be subjected to fault effects without any task on the looped network operation wavelength, so fault adjacent phases G, A do not need to carry out any switching.Subsequently after 2. the section of striding CD (section of striding between node C and the node D) breaks down, determine to switch implementation status by initiation and execute protection turning protocol: be respectively node C and node D at the nearest professional upper and lower circuit node of the distance fault section of striding, node C carries out wavelength channel right side (sides adjacent of the fault section of striding CD) and switches; Node D carries out wavelength channel left side (sides adjacent of the fault section of striding CD) and switches.
The 4th step, share the professional error connection prevention processing that looped network is switched for looped network multi-span situation lower channel, with the wavelength ring of clockwise and counterclockwise both direction according to comprising wavelet long number order be divided into 4 sub-wavelength rings, follow the G.841 decision principle of agreement of ITU-T, on the service distribution information basis of the long ring of wavelet, judge:
(1) be the long ring of 1 wavelet for the wavelet trombone; owing to all break down on the active channel of the long professional T2 of wavelet and the protection path may take place professional wrong the company, so the mode that needs respectively to separate the following road port that converges in the business of receiving equipment that node C and node F close the two-way services correspondence of T2 representative realizes professional error connection prevention.
(2) be the long ring of 2 wavelet for the wavelet trombone, may take place wrong the company, so do not need professional resistance fault reason owing to be subjected to fault effects less than the long business of wavelet.
(3) be the long ring of 3 wavelet for the wavelet trombone; owing to all break down on the active channel of the long professional T4 of wavelet and the protection path may take place professional wrong the company, so the mode that needs respectively to separate the following road port that converges in the business of receiving equipment that node A and node F close the two-way services correspondence of T4 representative realizes professional error connection prevention.
(4) be the long ring of 4 wavelet for the wavelet trombone, owing to all break down on the active channel of the long professional T6 of wavelet and the protection path may take place professional wrong the company, so the mode that needs respectively to separate the following road port that converges in the business of receiving equipment that node A and node D close the two-way services correspondence of T6 representative realizes professional error connection prevention; Be subjected to fault effects because the long professional T7 of wavelet only is the protection passage, may wrongly do not connect, also just do not need to hinder the fault reason so do not exist.
In sum, by means of technical scheme of the present invention, can realize switching and corresponding error connection prevention based on the channels share protection of the long professional granularity of wavelet.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. wrong method is switched and organized to a wavelet length that is used for optical transmission loop network, it is characterized in that, comprising:
Between adjacent two nodes in described loop network first connect under the situation about going wrong, each node in two nodes of the described first connection both sides is switched respectively toward each other, gone up the professional connection of wavelet length as the described first protection connection that connects switching described first connection of back carrying;
Between two nodes except described first connects in described loop network second connect under the situation about going wrong, and each node in two nodes of the described second connection both sides is switched respectively toward each other;
To described first connect be connected with described second switch after, if the long business of the wavelet in the described loop network can't realize, then long professional port shutdown hinders mistake to the node by the long professional two ends of described wavelet that can't realize at the described wavelet that can't realize.
2. wrong method is switched and organized to wavelet length according to claim 1, it is characterized in that, to described first connect and/or described second connect switch before, further comprise:
Automatic Protection Switching Control configuration protection group information to each node in the described loop network.
3. wrong method is switched and organized to wavelet length according to claim 2; it is characterized in that described protection group information comprises that protection type, echo plex mode, Wait-to-Restore setting, loop network node networking topology information, APS detect veneer, APS is carried out the physical address port information of veneer, the business information model that the protection group relates to.
4. wrong method is switched and organized to wavelet length according to claim 3, it is characterized in that, described business information model is the distribution on the long professional a plurality of nodes in described loop network of each wavelet in the described loop network.
5. wrong method is switched and organized to wavelet length according to claim 4, it is characterized in that, under the reference wavelength direction of appointment, when the long professional node in described loop network of each wavelet in the described loop network exists arbitrary wavelet length to set out on a journey, and under the situation that does not have the long road down of arbitrary wavelet and lead directly to, the state of described node is for setting out on a journey; When the long professional described node in described loop network of each wavelet in the described loop network exist arbitrary wavelet long under the road, and do not exist arbitrary wavelet length set out on a journey and situation about lead directly under, the state of described node under the road; When the long professional described node in described loop network of each wavelet in the described loop network exist simultaneously arbitrary wavelet length set out on a journey and the norator wavelength under the road or exist simultaneously arbitrary wavelet length set out on a journey and straight-through, the arbitrary wavelet of norator wavelength long under under the straight-through situation of road and norator wavelength, the state of described node be about the road.
6. switch and organize wrong method according to each described wavelet length in the claim 1 to 5; it is characterized in that; judge node and the wrong node of needs resistance that needs are switched according to the protection group information that comprises described node state, and switch by described auto switching controller execution.
7. switch and organize wrong method according to each described wavelet length in the claim 1 to 5, it is characterized in that the mode that described first two nodes that connect both sides are switched is: described first two nodes channel switching toward each other that connects both sides is the passage towards itself.
8. switch and organize wrong method according to each described wavelet length in the claim 1 to 5, it is characterized in that the mode that described second two nodes that connect both sides are switched is: described second two nodes channel switching toward each other that connects both sides is the passage towards itself.
9. switch and organize wrong method according to each described wavelet length in the claim 1 to 5, it is characterized in that, stagger the time hindering, close in the receiving equipment of long professional two end nodes of described wavelet that can't realize and separate the following road port that converges corresponding to the long professional business of the described wavelet that can't realize.
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| CNB200710165118XA CN100568844C (en) | 2007-10-29 | 2007-10-29 | The wavelet length that is used for optical transmission loop network is switched and is hindered wrong method |
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| CNB200710165118XA CN100568844C (en) | 2007-10-29 | 2007-10-29 | The wavelet length that is used for optical transmission loop network is switched and is hindered wrong method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101345600B (en) * | 2008-08-21 | 2012-05-23 | 中兴通讯股份有限公司 | Method and system for implementing sub-wavelength passage sharing protection by electronic crossing mode |
| CN102638733A (en) * | 2011-02-15 | 2012-08-15 | 中兴通讯股份有限公司 | Method and system for configuration protection group |
-
2007
- 2007-10-29 CN CNB200710165118XA patent/CN100568844C/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101345600B (en) * | 2008-08-21 | 2012-05-23 | 中兴通讯股份有限公司 | Method and system for implementing sub-wavelength passage sharing protection by electronic crossing mode |
| CN102638733A (en) * | 2011-02-15 | 2012-08-15 | 中兴通讯股份有限公司 | Method and system for configuration protection group |
| CN102638733B (en) * | 2011-02-15 | 2017-03-15 | 中兴通讯股份有限公司 | The method and system of configuration protection group |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100568844C (en) | 2009-12-09 |
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