CN103825816A - Service transmission protection method and device based on polycyclic-structure network intersecting rings - Google Patents
Service transmission protection method and device based on polycyclic-structure network intersecting rings Download PDFInfo
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- CN103825816A CN103825816A CN201210466778.2A CN201210466778A CN103825816A CN 103825816 A CN103825816 A CN 103825816A CN 201210466778 A CN201210466778 A CN 201210466778A CN 103825816 A CN103825816 A CN 103825816A
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Abstract
The embodiment of the invention discloses a service transmission protection method based on polycyclic-structure network intersecting rings. The method includes: when a service is transmitted to an internet node through a work channel or a protection channel of a ring-entering ring network, if it is judged that the service is capable of reaching a ring-exiting node of the service from an internet node according to intersecting-ring topology state information, then the internet node crosses rings according to the information of the ring-exiting node and the internet node pre-shares the information of the ring-exiting node of the service, and a ring network which the ring-entering node is in and a ring network which the ring-exiting node is in pre-share the intersecting-ring topology state information; and then the service is transmitted to the ring-exiting node through a work channel or a protection channel of a ring-exiting ring network. The embodiment of the invention also discloses a service transmission protection device based on the polycyclic-structure network intersecting rings. The service transmission protection method and device based on the polycyclic-structure network intersecting rings are capable of preventing realization of service transmission protection through a method of associating upper and lower loops with the whole of ring networks and reducing the complexity of cross-ring protection of the intersecting rings.
Description
Technical field
The application relates to communication network technology field, particularly relates to a kind of transmission protecting and corresponding device thereof of the business based on multiring structure network intersecting ring.
Background technology
Multiring structure network is made up of at least two Single-ring networks, and this network architecture is a kind of network topology structure that communication technical field is conventional.With respect to other network topology structures, multiring structure network can improve network survivability (Survivability largely, while referring to that network equipment node or node link break down, network within the utmost point short time self-healing to maintain the ability of certain tolerable service level).Because multi-ring networks structure comprises multiple Single-ring networks, between two looped networks main exist from crossing two kinds of relations, two looped networks form intersecting ring by shared link when crossing, on two looped networks, crossing node is interlink node.
Changing under the environment of structural network intersecting ring, a kind of mode that realizes business transmission protection as shown in Figure 1 more.Network Q in figure by node 2 enter looped network 1, node 8 goes out looped network 2, the service aisle of business Q is 2-1-5-4-8, through interlink node 5 and 4.Protection channel for Q business is path M (being made up of M1～M5) on looped network 1, is path N (being made up of N1～N5) on looped network 2.In the time of the abnormal conditions such as interlink node 5 breaks down; be sent to the Q business of node 1 or be switched on Protection path M and be oppositely sent to node 4 in the Q of node 2 business, node 4 is switched to Q business on ring 2 and continues to be sent to destination node 8 according to the incidence relation of the business Q setting up in advance and M, N.
Above-mentioned business transmission protected mode is in the time that realization is operated to the transannular of looped network 2 by looped network 1; need to carry out according to the association in the two or more pieces path of setting up in advance between upper and lower loop; because these paths relate to two looped network overall situations; make two adjacent looped networks not independent in logic; increase the complexity of intersecting ring transannular protection, do not met the basic thought of MPLS.In addition, above-mentioned business transmission protected mode only can solve the failure problems of interlink node, can not solve and comprise the business transmission protection of interlink node fault in the time that abnormal condition appears in interior multinode or node link.
Summary of the invention
For solving the problems of the technologies described above; the embodiment of the present application provides a kind of transmission protecting and related device thereof of the business based on multi-ring network structural network intersecting ring; to avoid realizing business transmission protection by the mode of the upper and lower looped network overall situation of association, reduce the complexity of intersecting ring transannular protection.
The transmission protecting of the business based on multiring structure network intersecting ring that the embodiment of the present application provides comprises:
In the time that business is transferred to interlink node by the service aisle that enters link point place looped network by business or protection channel, if that judges according to intersecting ring topology state information that business can reach business from this interlink node goes out link point, go out link dot information transannular to going out link point place looped network in this interlink node basis, described interlink node in advance shared service go out link dot information, described in enter link point place looped network and go out link point place looped network and share in advance the topological state information of intersecting ring;
By the service aisle or the protection channel that go out link point place looped network, business is transferred to out to link point.
Preferably, describedly comprise to going out link point place looped network according to going out link dot information transannular at this interlink node:
The service aisle that enters link point place looped network or protection channel label that the message of bearer service is carried are peeled off from message, will go out the service aisle of link point place looped network or protection channel label and push the message of bearer service.
Further preferably; looped network service aisle or protection channel comprise ring channel logic layer; the described service aisle that enters link point place looped network or the protection channel label that the message of bearer service is carried peeled off from message, and the message that goes out the service aisle of link point place looped network or protection channel label and push bearer service is specifically comprised:
The service aisle that enters link point place looped network that the message of bearer service is carried or protection channel label are peeled off from the ring channel logic layer of the message of bearer service, will go out the service aisle of link point place looped network or protection channel label and push the ring channel logic layer of the message of bearer service.
Preferably, the described service aisle that enters link point place looped network by business or protection channel are transferred to interlink node by business and specifically comprise:
In the time entering the ring-network topology state of link point place looped network and be preset state, be switched to service aisle or protection channel into link point place looped network, by the service aisle after switching or protection channel, business is transferred to interlink node; And/or,
Describedly business be transferred to out to link point specifically comprise by going out the service aisle of link point place looped network or protection channel:
In the time going out the ring-network topology state of link point place looped network and be preset state, be switched to out service aisle or the protection channel of link point place looped network, by the service aisle after switching or protection channel, business is transferred to out to link point.
Preferably, described interlink node in advance shared service go out link dot information, described in enter link point place looped network and go out link point place looped network and share in advance the topological state information of intersecting ring and comprise:
An interlink node of adjacent interlink node by configuration through self business go out link dot information send in real time or periodically another interlink node with realize business go out link dot information share;
In the time entering the node of link point place looped network or the state of node link and change, by the state of this node or node link change towards the node link direction changing away from state put section by section notice to described in enter other nodes of link point place looped network; The interlink node that enters link point place looped network receives after state change notification state change notification to the each node that goes out link point place looped network to realize sharing into the topological state information of link point place looped network;
In the time going out the node of link point place looped network or the state of node link and change, by the state of this node or node link change towards the node link direction changing away from state put section by section notice to described in go out other nodes of link point place looped network; The interlink node that goes out link point place looped network receives after state change notification state change notification to the each node that enters link point place looped network to realize out the sharing of topological state information of link point place looped network.
Preferably, judge that according to intersecting ring topology state information the link point that goes out whether business can reach business from interlink node is specially:
Entering to encircle, Nodes or interlink node place judge according to intersecting ring topology state information whether business can reach business from interlink node goes out link point.
The embodiment of the present application also provides a kind of transmission of the business based on multiring structure network intersecting ring protective device.This device comprises: the first business transmission unit, accessibility judging unit, transannular operating unit and the second business transmission unit, wherein:
Described the first business transmission unit, is transferred to interlink node for the service aisle or the protection channel that enter link point place looped network by business by business, described interlink node in advance shared service go out link dot information;
Described accessibility judging unit, goes out link point for what judge according to intersecting ring topology state information whether business can reach business from interlink node;
Described transannular operating unit, for in the time that business is transferred to interlink node by the service aisle that enters link point place looped network by business or protection channel, if what accessibility judging unit judged according to intersecting ring topology state information that business can reach business from this interlink node goes out link point, at this interlink node according to going out link dot information transannular to going out link point place looped network, described in enter link point place looped network and go out the link point place looped network topological state information of shared intersecting ring in advance;
Described the second business transmission unit, is transferred to out link point for the service aisle by going out link point place looped network or protection channel by business.
Preferably, described transannular operating unit comprises that label peeling subelement and label push subelement, wherein:
Described label peeling subelement, peels off from message for the service aisle that enters link point place looped network or protection channel label that the message of bearer service is carried;
Described label pushes subelement, for going out the service aisle of link point place looped network or protection channel label and push the message of bearer service.
Further preferably; described vocational work passage or protection channel comprise ring channel logic layer; described label peeling subelement is peeled off from the ring channel logic layer of the message of bearer service specifically for the service aisle that enters link point place looped network or protection channel label that the message of bearer service is carried, and described label pushes subelement specifically for going out the service aisle of link point place looped network or protection channel label and push the ring channel logic layer of the message of bearer service.
Preferably, described the first business transmission unit comprises the first state judgment sub-unit and the first business transmission subelement, wherein: described the first state judgment sub-unit, for judging whether into the ring-network topology state of link point place looped network be preset state, if so, be switched to service aisle or the protection channel into link point place looped network; Described the first business transmission subelement, is transferred to interlink node for the service aisle by after switching or protection channel by business; And/or,
Described the second business transmission unit comprises the second state judgment sub-unit and the second business transmission subelement, wherein: described the second state judgment sub-unit, whether be preset state for the ring-network topology state of judging link point place looped network, if so, be switched to out service aisle or the protection channel of link point place looped network; Described the second business transmission subelement, is transferred to out link point for the service aisle by after switching or protection channel by business.
Preferably, described device comprises shares information configuration unit, for configuring the interlink node of multiring structure network intersecting ring, what make shared service between adjacent interlink node goes out link dot information, and make into link point place looped network and go out link point place looped network to share intersecting ring topology state information, this shared information configuration unit specifically comprises link dot information shared Sub unit and ring-network topology state shared Sub unit, wherein:
Described go out link dot information shared Sub unit, for configuration is sent to another interlink node in real time or periodically through the link dot information that goes out of the business of an interlink node of adjacent interlink node;
Described ring-network topology state shared Sub unit, for in the time entering the node of link point place looped network or the state of node link and change, the state of this node or node link is changed towards the node link direction changing away from state and puts section by section other nodes that enter link point place looped network described in notifying; Receive after state change notification at the interlink node that enters link point place looped network, by state change notification to the each node that goes out link point place looped network;
Described ring-network topology state shared Sub unit, also in the time going out the node of link point place looped network or the state of node link and change, by the state of this node or node link change towards the node link direction changing away from state put section by section notice to described in go out other nodes of link point place looped network; Receive after state change notification at the interlink node that goes out link point place looped network, by state change notification to the each node that enters link point place looped network.
Preferably, described accessibility judging unit is specifically for Nodes or interlink node place judge according to intersecting ring topology state information whether business can reach business from interlink node goes out link point entering to encircle.
Between the interlink node of the embodiment of the present application, share link dot information and enter link point and go out shared intersecting ring topology state information between the looped network of link point place, in the time that business is transferred to interlink node, if this interlink node can reach link point, utilize out link dot information transannular to going out the looped network transmission of link point place at this interlink node.Compared with prior art; because the embodiment of the present application shares link dot information between interlink node; adjacent interlink node can be regarded as a dummy node; in the time of the abnormal conditions such as the interlink node that should pass through by the definite business of business configuration breaks down; other interlink node can go out link dot information and realizes transannular according to this; this transannular mode is without the overall situation of two Single-ring networks that is associated with intersecting ring; make two looped networks independent separately in logic; thereby reduce the transmission protection complexity of the business based on intersecting ring, met the basic thought of MPLS.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present application or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, the accompanying drawing the following describes is only some embodiment that record in the application, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the business transmission protection schematic diagram of prior art under multiring structure network intersecting ring environment;
Fig. 2 is the flow chart of the transmission protecting embodiment of the business based on multi-ring networks intersecting ring;
Fig. 3 (a) is that the application is at intersecting ring business transmitting procedure schematic diagram under normal circumstances;
Fig. 3 (b) is the business transmitting procedure schematic diagram of the application under interlink node failure situations;
Fig. 3 (c) is the business transmission schematic diagram of the application under non-interlink node link failure situation;
Fig. 3 (d) is the business transmitting procedure schematic diagram of the application under interlink node link and the equal failure situations of non-interlink node link;
Fig. 4 is the structured flowchart of the transmission protective device embodiment of the application's the business based on multi-ring networks intersecting ring.
Embodiment
In order to make those skilled in the art person understand better the technical scheme in the application, below in conjunction with the accompanying drawing in the embodiment of the present application, technical scheme in the embodiment of the present application is clearly and completely described, obviously, described embodiment is only the application's part embodiment, rather than whole embodiment.Based on the embodiment in the application, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all should belong to the scope of the application's protection.
Referring to Fig. 2, the figure shows the flow process of the transmission protecting embodiment of the application's the business based on multi-ring networks intersecting ring.This embodiment comprises:
Step S201: the interlink node of configuration multiring structure network intersecting ring, what make shared service between adjacent interlink node goes out link dot information, and make into link point place looped network with go out the topological state information of the shared intersecting ring of link point place looped network;
" based on the business of many rings multi-ring networks intersecting ring " of the present embodiment refers to that any one node in a looped network of multi-ring networks enters ring, and any one node in another adjacent looped network of multi-ring networks goes out the business of ring.Based on this, for single looped network, according to the difference playing a role in transport service process, the node on looped network can be divided into three classes: a class be access service enter link point, one class is the adapter ring node of transport service, the 3rd class be outgoing traffic go out link point.This three category node is brought into play separately the effect of self in transmission single network business procedure, and still, with regard to looped network generally speaking, any one node on looped network all may have the function of three category nodes simultaneously.
Multiring structure network comprises multiple Single-ring networks, and the intersection point after adjacent looped network intersects is generally two, can be also multiple, these intersection points are interlink node, interlink node, by shared link, makes it both belong to a node on looped network, also belongs to the node on another looped network.But the working condition of these interlink nodes on two looped networks do not shared certainly, in the time that they respectively work on a ring, has independence.In order to make interlink node equal " visible " in two looped networks, need to be configured it, the object of configuration is to make two adjacent interlink nodes share link dot information, and makes two looped networks of intersecting ring can share the topological state information of whole intersecting ring by interlink node.
Share configuration means the present embodiment of intersecting ring topology state information and be not particularly limited for sharing link dot information between adjacent interlink node and entering link point and go out link point place network, can adopt manual configuration, also can be configured according to preset rules by means of automation equipment, such as adopting webmastering software.Also be not construed as limiting for the concrete configuration mode of sharing link dot information between adjacent interlink node, but in actual application, the application is preferably as follows mode and completes the information configuration of sharing link point: an interlink node of adjacent interlink node sends to another interlink node by configuration in real time or periodically through the link dot information that goes out of business of self, thus make can mutually know between adjacent interlink node business separately go out link dot information.In addition, can also configure the interaction time mechanism that goes out link dot information between adjacent interlink node, such as carrying out in real time or periodically carry out.Similarly, be also not construed as limiting into link point and the concrete configuration mode that goes out the topological state information of the shared intersecting ring of link point place looped network for making by configuration interlink node, but in actual application, the application is preferably as follows mode and completes configuration:
In the time that the node that enters link point place looped network of multiring structure network or the state of node link change, by the state of this node or node link change towards the node link direction changing away from state put section by section notice to described in enter other nodes of link point place looped network; The interlink node that enters link point place looped network receives after state change notification state change notification to the each node that goes out link point place looped network;
In the time that the node that goes out link point place looped network of multiring structure network or the state of node link change, by the state of this node or node link change towards the node link direction changing away from state put section by section notice to described in go out other nodes of link point place looped network; The interlink node that goes out link point place looped network receives after state change notification state change notification to the each node that enters link point place looped network.
Above-mentioned layoutprocedure based on interlink node both in entering link point place looped network, also in going out link point, " dual identity " by interlink node by the topological state information notification that enters this looped network of knowing in the looped network of link point place to the each node going out in the looped network of link point place, by in the topological state information notification that goes out this looped network of knowing in the looped network of link point place to the each node going out in the looped network of link point place, like this, each node of two Single-ring networks all can be grasped the network topology state of whole intersecting ring.State in realization in the mutual notification procedure of topological status message, can adopt various message transmission protocols to carry out transmission of messages, such as adopting APS agreement etc.
Step S202: in the time that business is transferred to interlink node by the service aisle by entering link point place looped network or protection channel, can reach link point if judge business according to intersecting ring topology state information from this interlink node, go out link dot information transannular to going out link point place looped network in this interlink node basis;
When business enters looped network from the link point that enters of a looped network, this step is transferred to interlink node by business and may has different situations by entering the service aisle of link point place looped network or protection channel: the one, and the ring-network topology state that enters link point place looped network is normal, at this moment directly business is transferred to interlink node by the service aisle of this looped network; The 2nd, there is preset state in the ring-network topology state that enters link point place looped network, if preset state shows as into node or the node link of link point place looped network and breaks down, at this moment the protection channel that needs to be switched to this looped network, is transferred to interlink node by protection channel by business; If preset state shows as into the node of link point place looped network or node link fault vanishing state, at this moment can switch back service aisle by protection channel, by service aisle, business is transferred to interlink node.Also what deserves to be explained is: between preset state or non-preset state, carry out between service aisle and protection channel switch can be in business enter to encircle Nodes; the previous Nodes of certain malfunctioning node that also can be in business transmitting procedure; switchover mode under the former situation is the Steering protected mode of looped network, the Wrapping protected mode that the switchover mode under the latter's situation is looped network.
In the time that business is transferred to interlink node by the service aisle by entering link point place looped network or protection channel; the result that whether can reach link point from this interlink node according to the business based on the judgement of intersecting ring topology state information determines whether realize transannular at this interlink node place, is switched to out link point place looped network from entering the looped network at link point place.Owing to entering link point place looped network and going out shared intersecting ring topology state information between the looped network of link point place; thisly carry out based on intersecting ring topology state information the judgement whether business can reach link point from interlink node and can carry out (being similar to aforesaid Steering protected mode) entering to encircle Nodes; also can, in the time that business is transferred to interlink node, carry out (being similar to aforesaid Wrapping protected mode) at this interlink node place.What deserves to be explained is: under front a kind of situation, (enter to encircle Nodes and judge accessibility), " interlink node " that the business of this step is transferred to is the direct interlink node that business is transferred to, under rear a kind of situation (at interlink node, place judges accessibility), " interlink node " that the business of this step is transferred to is the interlink node finally with accessibility, and the business that this interlink node receives is transferred to the business of this interlink node may be unreachable through judging at other interlink node places time.
In the time knowing that interlink node that business is transferred to has accessibility (what can reach business from this interlink node goes out link point), realize transannular at this interlink node place.For the mode of " transannular "; the present embodiment is by utilizing out link dot information to carry out transannular operation; specifically can realize in the following manner: the service aisle that enters link point place looped network or protection channel label that the message of bearer service is carried are peeled off from message, will go out the service aisle of link point place looped network or protection channel label and push the message of bearer service.When in some multiring structure network; service channel may comprise multiple logical layers; such as PW layer, operation layer and ring channel logic layer etc.; in this case; above-mentioned transannular operation is mainly carried out at ring channel logic layer; and to not carrying out transannular on other layers of internal layer more; that is: the service aisle that the enters link point place looped network message of bearer service being carried or protection channel label are peeled off from the ring channel logic layer of the message of bearer service, will go out the service aisle of link point place looped network or protection channel label and push the ring channel logic layer of the message of bearer service.
Step S203: business is transferred to out to link point by the service aisle or the protection channel that go out link point place looped network;
When business is encircled from the interlink node of a looped network, transannular is to going out after the looped network of link point place, this step by go out the service aisle of link point place looped network or protection channel by business be transferred to out link point to above-mentioned enter in link point looped network the transmission means of business similar, may there is different situations: the one, the ring-network topology state that goes out link point place looped network is normal, at this moment directly business is transferred to out to link point by the service aisle of this looped network; The 2nd, there is preset state in the ring-network topology state that goes out link point place looped network, if preset state shows as out node or the node link of link point place looped network and breaks down, at this moment the protection channel that needs to be switched to this looped network, is transferred to out link point by protection channel by business; If preset state shows as out node or the node link fault vanishing state of link point place looped network, at this moment can switch back service aisle by protection channel, by service aisle, business is transferred to out to link point.Similarly; between preset state or non-preset state, carry out between service aisle and protection channel switch can be at interlink node place; the previous Nodes of certain malfunctioning node that also can be in business transmitting procedure; switchover mode under the former situation is the Steering protected mode of looped network, the Wrapping protected mode that the switchover mode under the latter's situation is looped network.
Realize by the abovementioned steps of the present embodiment in the application's goal of the invention process; also what deserves to be explained is: above-mentioned steps S201 is the work that needed the preparation character of carrying out before service protection transmission protection step; can be to carry out before the transmission of multiple business disposable configuration complete; later business, based on this Configuration service protection transmission, also can business of every transmission configure separately.In the previous case, the application's scheme can only comprise follow-up S202, the content of two steps of S203, that is: in the time that business is transferred to interlink node by the service aisle by entering link point place looped network or protection channel, if that judges according to intersecting ring topology state information that business can reach business from this interlink node goes out link point, go out link dot information transannular to going out link point place looped network in this interlink node basis, described interlink node in advance shared service go out link dot information, described enter link point place looped network with go out link point place looped network and share in advance the topological state information of intersecting ring, by the service aisle or the protection channel that go out link point place looped network, business is transferred to out to link point.
The present embodiment is by the adjacent interlink node of configuration, make between interlink node, to share link dot information and enter link point and go out between the looped network of link point place, to share intersecting ring topology state information, in the time that business is transferred to interlink node, if this interlink node can reach link point, utilize out link dot information transannular to going out the looped network transmission of link point place at this interlink node.Compared with prior art, the embodiment of the present application at least can obtain following technique effect:
(1) because the present embodiment shares link dot information between interlink node, even if there is the abnormal conditions such as fault in interlink node, also can realize by other interlink nodes across changing operation, and without the overall situation of each Single-ring network that is associated with intersecting ring, make two adjacent looped networks independent in logic, reduce the complexity of intersecting ring service protection, more met the basic thought of MPLS;
(2) between the interlink node due to the present embodiment, share link dot information, there is the link of going out dot information and can realize easily transannular, make thus adjacent interlink node in fact become one " dummy node ", at control plane, multiple interlink nodes are invisible for configuration operation, be configured for a node (i.e. this dummy node) at control plane, each interlink node of bottom can realize corresponding configuration, thereby reduce configuration service amount, be conducive to improve the transmission protection efficiency of intersecting ring business;
(3) because the embodiment of the present application makes into link point place looped network and the network topology state that goes out the shared whole intersecting ring of link point place looped network by interlink node; interlink node can be judged entering to encircle Nodes from the accessibility that goes out link point; also can judge at the previous Nodes of malfunctioning node or faulty link; combine the advantage separately of looped network Steering protected mode and Wrapping protected mode, improved the flexibility of business transmission protection.
For further explaining the technical scheme of above-described embodiment, describe with a detailed example below.Referring to Fig. 3 (a), the figure shows intersecting ring business transmitting procedure under normal circumstances.This figure comprises two looped network Ring ID1 (EDHGFE) and Ring ID2 (ABCDEA); wherein node E and node D are the interlink nodes of these two looped networks; in each looped network, be provided with two-way (clockwise direction and counter clockwise direction) four passages (clockwise service aisle and the with it counterclockwise protection channel of correspondence, and counterclockwise service aisle and protection channel).The figure shows the service line of two data to be transmitted, i.e. uplink service line AEDH and downlink business line HDEA.Under normal circumstances, in the time that uplink service is transferred to interlink node E by RingID2, interlink node carries out the judgement of business accessibility, judge after E node transannular and whether can reach link point H by interlink node E, due under normal circumstances, interlink node E reaches to node H's, and interlink node E utilizes out link dot information to carry out transannular operation uplink traffic transmission is switched on Ring ID1, then by the service aisle of this ring, uplink service is sent to out to link point H.In like manner, downlink business is realized business transmission in a similar way: enter ring from the node H of Ring ID1, after the transannular operation by interlink node D, arrive Ring ID2, then arrive out link point A by the service aisle of Ring ID2.Business transmission protection problem under several representative failure situations is described respectively below.
Situation for interlink node fault: referring to Fig. 3 (b), the business transmitting procedure while the figure shows an interlink node (node E) fault in two interlink nodes.Business in intersecting ring is carried out transannular by the interlink node D not breaking down and is realized business transmission protection in this case.In the time that interlink node E breaks down; uplink service is switched to protection channel at the node A of Ring ID2 by service aisle; by business datum through Node B, C to sending to interlink node D point; due to interlink node E, (interlink node that business should be able to be passed through is here called main interlink node; other interlink nodes are standby interlink node) break down unreachable; interlink node D node proceeds to the accessibility judgement of node H as standby interlink node; can reach after node H through judgement, uplink service is switched to RingID1 by interlink node D.It should be noted that: when being switched to after Ring ID1; due to the clockwise service aisle of Ring ID1 break down (fault that interlink node E causes); business transmission is transmitted being switched in the counterclockwise protection channel of RingID1; while being transferred to node F; switch again the conterclockwise service aisle of rolling back and rationalizing, thereby business datum is delivered to out to link point H.。In like manner, process in a similar way for downlink business, for avoiding repetition, no longer repeat here.
For non-interlink node link failure situation: referring to Fig. 3 (c), the business transmitting procedure while the figure shows non-interlink node link (the EA link between node E and node A) fault.In this case, business transmitting procedure is identical during with Single-ring network fault, in the looped network at faulty link place, protects and switches.In EA link failure situation between node E and node A, uplink service and downlink traffic transmission process are respectively: (1) uplink service arrives interlink node E by protection channel by business data transmission at RingID2, then switch back service aisle, carry out again accessibility judgement, judge from interlink node E and whether can reach link point H, because fault occurs in Ring ID2, Ring ID1 is unaffected, going out circling point H node can reach, interlink node E carries out transannular operation business is switched to Ring ID1, then service aisle is along clockwise direction through node F, G arrives under node H and encircles, (2) downlink business arrives interlink node E by service aisle by business data transmission at Ring ID11, because interlink node on Ring ID2 can reach to circling point node A under business, carry out transannular at interlink node E and operate Ring ID2, due to the anticlockwise service aisle fault of Ring ID2, the business that is switched to Ring ID2 will be switched to clockwise protection channel, arrive out link point A point through node D, C, B.
For interlink node link and the equal failure situations of non-interlink node link: referring to Fig. 3 (d), the figure shows all business transmitting procedures when fault of interlink node link (the ED link between interlink node E and interlink node D) and non-interlink node link (the EA link between interlink node E and node A).In this case, main interlink node carries out accessibility judgement, determines whether at this interlink node transannular, if can reach, is cross over ring at main interlink node; If unreachable, continue by service aisle business data transmission to standby interlink node, carry out transannular after similar judgement.In the EA link simultaneous faults situation between the EA link between interlink node E and interlink node D and interlink node E and node A, when downlink business arrives interlink node E, decision node A is unreachable, continue business datum to deliver to standby interlink node D at Ring ID1, interlink node D can transannular after judgement, after transannular at Ring ID2 through node D, C, B, under node A, encircle.
Above content is the description to the application's embodiment of the method, and correspondingly, the application also provides device embodiment.Referring to Fig. 4, the figure shows the structured flowchart of the transmission protective device embodiment of the business of the application based on multi-ring networks intersecting ring.This device embodiment comprises: share information configuration unit 401, the first business transmission unit 402, accessibility judging unit 403, transannular operating unit 404 and the second business transmission unit 405, wherein:
Share information configuration unit 401, for configuring the interlink node of multiring structure network intersecting ring, what make shared service between adjacent interlink node goes out link dot information, and make into link point place looped network with go out link point place looped network and share the topological state information of intersecting ring;
The first business transmission unit 402, for being transferred to interlink node by the service aisle or the protection channel that enter link point place looped network by business;
The second business transmission unit 405, is transferred to out link point for the service aisle by going out link point place looped network or protection channel by business.
The course of work of this device embodiment is: share information configuration unit 401 and between adjacent interlink node, share link dot information and make link point and go out after the topological state information of the shared intersecting ring of link point place looped network making by the interlink node of configuration multiring structure network intersecting ring, in the time that the first business transmission unit 402 is transferred to interlink node by entering the service aisle of link point place looped network or protection channel by business, if the business of accessibility judging unit 403 based on the judgement of intersecting ring topology state information can reach link point from interlink node, trigger transannular operating unit 404 utilize out link dot information at this interlink node transannular to going out link point place looped network, then by the service aisle or the protection channel that go out link point place looped network, business is transferred to out to link point by the second business transmission unit 405.Here it should be noted that: the shared information configuration unit of this device embodiment can business transmit protection work carry out before disposable configuration complete; follow-up business transmitting procedure is based on this Configuration, also can be configured separately often carrying out a business transmission.That is to say, under front a kind of situation, for the transmission protection of some business, the device that only needs the first business transmission unit 402, accessibility judging unit 403, transannular operating unit 404 and the second business transmission unit 405 of this device embodiment to form can be realized goal of the invention, under this situation, the functional distribution of each component units is: the first business transmission unit 402, for business being transferred to interlink node by the service aisle or the protection channel that enter link point place looped network, described interlink node in advance shared service go out link dot information; Whether accessibility judging unit 403, can reach link point for judging business according to intersecting ring topology state information from interlink node; Transannular operating unit 404, for in the time that business is transferred to interlink node by entering the service aisle of link point place looped network or protection channel, if judging business according to intersecting ring topology state information, accessibility judging unit can reach link point from this interlink node, at this interlink node according to going out link dot information transannular to going out link point place looped network, described in enter link point place looped network and go out the link point place looped network topological state information of shared intersecting ring in advance; The second business transmission unit 405, is transferred to out link point for the service aisle by going out link point place looped network or protection channel by business.
This device embodiment is by the adjacent interlink node of configuration, make between interlink node, to share link dot information and enter link point and go out between the looped network of link point place, to share intersecting ring topology state information, in the time that business is transferred to interlink node, if this interlink node can reach link point, utilize out link dot information transannular to going out the looped network transmission of link point place at this interlink node.Compared with prior art; because this device embodiment shares link dot information between interlink node; adjacent interlink node can be regarded as a dummy node; in the time of the abnormal conditions such as the interlink node that should pass through by the definite business of business configuration breaks down; other interlink node can go out link dot information and realizes transannular according to this; this transannular mode is without the overall situation of two Single-ring networks that is associated with intersecting ring; make two looped networks independent separately in logic; thereby reduce the transmission protection complexity of the business based on intersecting ring, met the basic thought of MPLS.
According to different transannular implementations, it has different internal structures to transannular operating unit in said apparatus embodiment.Such as, transannular operating unit 404 can comprise that label peeling subelement 4041 and label push subelement 4042, wherein: label peeling unit 4041, peel off from message for the service aisle that enters link point place looped network or protection channel label that the message of bearer service is carried; Label pushes subelement 4042, for going out the service aisle of link point place looped network or protection channel label and push the message of bearer service.When the vocational work passage in some multiring structure network or protection channel comprise ring channel logic layer; above-mentioned label peeling subelement 4041 is peeled off from the ring channel logic layer of the message of bearer service specifically for the service aisle that enters link point place looped network or protection channel label that the message of bearer service is carried, and label pushes subelement 4042 specifically for going out the service aisle of link point place looped network or protection channel label and push the ring channel logic layer of the message of bearer service.
Based on above-mentioned similar reason, the first business transmission unit 402 can comprise the first state judgment sub-unit 4021 and the first business transmission subelement 4022, wherein: the first state judgment sub-unit 4021, for judging whether into the ring-network topology state of link point place looped network be preset state, if so, be switched to service aisle or the protection channel into link point place looped network; The first business transmission subelement 4022, is transferred to interlink node for the service aisle by after switching or protection channel by business.Not only the first transport service unit can have said structure, also can there is above-mentioned similar structures for the second business transmission unit 405, can comprise the second state judgment sub-unit 4051 and the second business transmission subelement 4052, wherein: the second state judgment sub-unit 4051, whether be preset state for the ring-network topology state of judging link point place looped network, if so, be switched to out service aisle or the protection channel of link point place looped network; The second business transmission subelement 4052, is transferred to out link point for the service aisle by after switching or protection channel by business.
The shared information configuration unit 401 of said apparatus embodiment can have different structures for different shared information and realize sharing functionality.Such as, described in can comprising, shared information configuration unit 401 goes out link dot information shared Sub unit 4011 and ring-network topology state shared Sub unit 4012, the former sends to another interlink node in real time or periodically for the link dot information that goes out that configuration is passed through to the business of an interlink node of adjacent interlink node, thereby realizes out sharing between link dot information; The latter is in the time that the node that enters link point place looped network of multiring structure network or the state of node link change, and the state of this node or node link is changed towards the node link direction changing away from state and puts section by section other nodes that enter link point place looped network described in notifying; Receive after state change notification at the interlink node that enters link point place looped network, by state change notification to the each node that goes out link point place looped network, thereby realize out link point place looped network to enter link point place looped network network topological information share.Similarly, for realize into link point place looped network to go out link point place looped network network topological information share, ring-network topology state shared Sub unit 4012, can also be used in the time that the node that goes out link point place looped network of multiring structure network or the state of node link change, by the state of this node or node link change towards the node link direction changing away from state put section by section notice to described in go out other nodes of link point place looped network; Receive after state change notification at the interlink node that goes out link point place looped network, by state change notification to the each node that enters link point place looped network.Can adopt APS agreement to carry out realizing the message transmissions between node in aforesaid shared procedure.
For convenience of description, while describing above device, being divided into various unit with function describes respectively.Certainly, in the time implementing the application, the function of each unit can be realized in same or multiple software and/or hardware.Such as; all functional units can be formed to a single unit system; for controlling the business transmission protection in whole intersecting ring; all functional units can also be distributed on the looped network node of each intersecting ring, cooperatively interact and realize the allomeric function of this device embodiment by these nodes functional unit separately.
As seen through the above description of the embodiments, those skilled in the art can be well understood to the mode that the application can add essential general hardware platform by software and realizes.Based on such understanding, the part that the application's technical scheme contributes to prior art in essence in other words can embody with the form of software product, this computer software product can be stored in storage medium, as ROM/RAM, magnetic disc, CD etc., comprise that some instructions (can be personal computers in order to make a computer equipment, server, or the network equipment etc.) carry out the method described in some part of each embodiment of the application or embodiment.
Each embodiment in this specification all adopts the mode of going forward one by one to describe, between each embodiment identical similar part mutually referring to, what each embodiment stressed is and the difference of other embodiment.Especially,, for system embodiment, because it is substantially similar in appearance to embodiment of the method, so describe fairly simplely, relevant part is referring to the part explanation of embodiment of the method.System embodiment described above is only schematic, the wherein said unit as separating component explanation can or can not be also physically to separate, the parts that show as unit can be or can not be also physical locations, can be positioned at a place, or also can be distributed in multiple network element.Can select according to the actual needs some or all of module wherein to realize the object of the present embodiment scheme.Those of ordinary skills, in the situation that not paying creative work, are appreciated that and implement.
The application can be used in numerous general or special purpose computingasystem environment or configuration.For example: personal computer, server computer, handheld device or portable set, plate equipment, multicomputer system, system, set top box, programmable consumer-elcetronics devices, network PC, minicom, mainframe computer based on microprocessor, comprise distributed computing environment (DCE) of above any system or equipment etc.
The application can describe in the general context of the computer executable instructions of being carried out by computer, for example program module.Usually, program module comprises and carries out particular task or realize routine, program, object, assembly, data structure of particular abstract data type etc.Also can in distributed computing environment (DCE), put into practice the application, in these distributed computing environment (DCE), be executed the task by the teleprocessing equipment being connected by communication network.In distributed computing environment (DCE), program module can be arranged in the local and remote computer-readable storage medium including memory device.
The above is only the application's embodiment; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the application's principle; can also make some improvements and modifications, these improvements and modifications also should be considered as the application's protection range.
Claims (12)
1. a transmission protecting for the business based on multiring structure network intersecting ring, is characterized in that, the method comprises:
In the time that business is transferred to interlink node by the service aisle that enters link point place looped network by business or protection channel, if that judges according to intersecting ring topology state information that business can reach business from this interlink node goes out link point, go out link dot information transannular to going out link point place looped network in this interlink node basis, described interlink node in advance shared service go out link dot information, described in enter link point place looped network and go out link point place looped network and share in advance the topological state information of intersecting ring;
By the service aisle or the protection channel that go out link point place looped network, business is transferred to out to link point.
2. method according to claim 1, is characterized in that, describedly comprises to going out link point place looped network according to going out link dot information transannular at this interlink node:
The service aisle that enters link point place looped network or protection channel label that the message of bearer service is carried are peeled off from message, will go out the service aisle of link point place looped network or protection channel label and push the message of bearer service.
3. method according to claim 2; it is characterized in that; looped network service aisle or protection channel comprise ring channel logic layer; the described service aisle that enters link point place looped network or the protection channel label that the message of bearer service is carried peeled off from message, and the message that goes out the service aisle of link point place looped network or protection channel label and push bearer service is specifically comprised:
The service aisle that enters link point place looped network that the message of bearer service is carried or protection channel label are peeled off from the ring channel logic layer of the message of bearer service, will go out the service aisle of link point place looped network or protection channel label and push the ring channel logic layer of the message of bearer service.
4. according to the method described in any one in claims 1 to 3, it is characterized in that, the described service aisle that enters link point place looped network by business or protection channel are transferred to interlink node by business and specifically comprise:
In the time entering the ring-network topology state of link point place looped network and be preset state, be switched to service aisle or protection channel into link point place looped network, by the service aisle after switching or protection channel, business is transferred to interlink node; And/or,
Describedly business be transferred to out to link point specifically comprise by going out the service aisle of link point place looped network or protection channel:
In the time going out the ring-network topology state of link point place looped network and be preset state, be switched to out service aisle or the protection channel of link point place looped network, by the service aisle after switching or protection channel, business is transferred to out to link point.
5. according to the method described in any one in claims 1 to 3, it is characterized in that, described interlink node in advance shared service go out link dot information, described in enter link point place looped network and go out link point place looped network and share in advance the topological state information of intersecting ring and comprise:
An interlink node of adjacent interlink node by configuration through self business go out link dot information send in real time or periodically another interlink node with realize business go out link dot information share;
In the time entering the node of link point place looped network or the state of node link and change, by the state of this node or node link change towards the node link direction changing away from state put section by section notice to described in enter other nodes of link point place looped network; The interlink node that enters link point place looped network receives after state change notification state change notification to the each node that goes out link point place looped network to realize sharing into the topological state information of link point place looped network;
In the time going out the node of link point place looped network or the state of node link and change, by the state of this node or node link change towards the node link direction changing away from state put section by section notice to described in go out other nodes of link point place looped network; The interlink node that goes out link point place looped network receives after state change notification state change notification to the each node that enters link point place looped network to realize out the sharing of topological state information of link point place looped network.
6. according to the method described in any one in claims 1 to 3, it is characterized in that, judge that according to intersecting ring topology state information the link point that goes out whether business can reach business from interlink node is specially:
Entering to encircle, Nodes or interlink node place judge according to intersecting ring topology state information whether business can reach business from interlink node goes out link point.
7. a transmission protective device for the business based on multiring structure network intersecting ring, is characterized in that, this device comprises: the first business transmission unit, accessibility judging unit, transannular operating unit and the second business transmission unit, wherein:
Described the first business transmission unit, is transferred to interlink node for the service aisle or the protection channel that enter link point place looped network by business by business, described interlink node in advance shared service go out link dot information;
Described accessibility judging unit, goes out link point for what judge according to intersecting ring topology state information whether business can reach business from interlink node;
Described transannular operating unit, for in the time that business is transferred to interlink node by the service aisle that enters link point place looped network by business or protection channel, if what accessibility judging unit judged according to intersecting ring topology state information that business can reach business from this interlink node goes out link point, at this interlink node according to going out link dot information transannular to going out link point place looped network, described in enter link point place looped network and go out the link point place looped network topological state information of shared intersecting ring in advance;
Described the second business transmission unit, is transferred to out link point for the service aisle by going out link point place looped network or protection channel by business.
8. device according to claim 7, is characterized in that, described transannular operating unit comprises that label peeling subelement and label push subelement, wherein:
Described label peeling subelement, peels off from message for the service aisle that enters link point place looped network or protection channel label that the message of bearer service is carried;
Described label pushes subelement, for going out the service aisle of link point place looped network or protection channel label and push the message of bearer service.
9. device according to claim 8; it is characterized in that; described vocational work passage or protection channel comprise ring channel logic layer; described label peeling subelement is peeled off from the ring channel logic layer of the message of bearer service specifically for the service aisle that enters link point place looped network or protection channel label that the message of bearer service is carried, and described label pushes subelement specifically for going out the service aisle of link point place looped network or protection channel label and push the ring channel logic layer of the message of bearer service.
10. according to the device described in any one in claim 7 to 9, it is characterized in that,
Described the first business transmission unit comprises the first state judgment sub-unit and the first business transmission subelement, wherein: described the first state judgment sub-unit, for judging whether into the ring-network topology state of link point place looped network be preset state, if so, be switched to service aisle or the protection channel into link point place looped network; Described the first business transmission subelement, is transferred to interlink node for the service aisle by after switching or protection channel by business; And/or,
Described the second business transmission unit comprises the second state judgment sub-unit and the second business transmission subelement, wherein: described the second state judgment sub-unit, whether be preset state for the ring-network topology state of judging link point place looped network, if so, be switched to out service aisle or the protection channel of link point place looped network; Described the second business transmission subelement, is transferred to out link point for the service aisle by after switching or protection channel by business.
11. according to the device described in any one in claim 7 to 9, it is characterized in that, described device comprises shares information configuration unit, for configuring the interlink node of multiring structure network intersecting ring, what make shared service between adjacent interlink node goes out link dot information, and make into link point place looped network and go out link point place looped network to share intersecting ring topology state information, this shared information configuration unit specifically comprises link dot information shared Sub unit and ring-network topology state shared Sub unit, wherein:
Described go out link dot information shared Sub unit, for sending in real time or periodically another interlink node to go out sharing of link dot information with what realize business through the link dot information that goes out of the business of an interlink node of adjacent interlink node configuration;
Described ring-network topology state shared Sub unit, for in the time entering the node of link point place looped network or the state of node link and change, the state of this node or node link is changed towards the node link direction changing away from state and puts section by section other nodes that enter link point place looped network described in notifying; Receive after state change notification at the interlink node that enters link point place looped network, by state change notification to the each node that goes out link point place looped network to realize sharing into the topological state information of link point place looped network;
Described ring-network topology state shared Sub unit, also in the time going out the node of link point place looped network or the state of node link and change, by the state of this node or node link change towards the node link direction changing away from state put section by section notice to described in go out other nodes of link point place looped network; Receive after state change notification at the interlink node that goes out link point place looped network, by state change notification to the each node that enters link point place looped network to realize out the sharing of topological state information of link point place looped network.
12. according to the device described in any one in claim 7 to 9, it is characterized in that, described accessibility judging unit is specifically for Nodes or interlink node place judge according to intersecting ring topology state information whether business can reach business from interlink node goes out link point entering to encircle.
Priority Applications (2)
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| CN201210466778.2A CN103825816A (en) | 2012-11-16 | 2012-11-16 | Service transmission protection method and device based on polycyclic-structure network intersecting rings |
| PCT/CN2013/086852 WO2014075594A1 (en) | 2012-11-16 | 2013-11-11 | Service transmission protection method and device based on intersecting ring of multi-ring structure network |
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| CN201210466778.2A CN103825816A (en) | 2012-11-16 | 2012-11-16 | Service transmission protection method and device based on polycyclic-structure network intersecting rings |
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