CN102801596B - Service processing method for ring network and network equipment - Google Patents

Service processing method for ring network and network equipment Download PDF

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Publication number
CN102801596B
CN102801596B CN201210190002.2A CN201210190002A CN102801596B CN 102801596 B CN102801596 B CN 102801596B CN 201210190002 A CN201210190002 A CN 201210190002A CN 102801596 B CN102801596 B CN 102801596B
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node
business
protocol massages
ring
information
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CN102801596A (en
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叶剑
孙光辉
蔡亨光
张文洋
杨炀
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/28Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/42Loop networks
    • H04L12/437Ring fault isolation or reconfiguration

Abstract

The invention provides a service processing method for a ring network and network equipment. The method comprises the following steps of: acquiring unreachable node information by using a first node in the ring network; determining a suppressed service in local service information; and suppressing the determined suppressed service. The network equipment comprises an acquisition module, a determination module and a suppression module. An unreachable service is suppressed, so that an additional protecting channel bandwidth can be prevented from being occupied, and influence on other reachable services is maximally reduced.

Description

Method for processing business and the network equipment in looped network
Technical field
The present invention relates to the communication technology, particularly relate to method for processing business and the network equipment in a kind of looped network.
Background technology
Along with multiprotocol label switching (Multi Protocol Label Switching; referred to as: the MPLS) development of technology; in order to strengthen the reliability of network; progressively there is multiple MPLS ring net protection method, wrapping switchover mode and steering switchover mode in often kind of guard method, can have been comprised.For example, when looped network normally works, the transmission path of business in looped network as shown in Figure 1a.When breaking down between looped network interior joint 4 and node 3, wrapping switchover mode can be switched according to the path shown in dotted line in Fig. 1 b, and steering switchover mode then can be switched according to the path shown in dotted line in Fig. 1 c.
No matter be wrapping switchover mode or steering switchover mode; when the pressed on ring service node in looped network or lower ring service node break down; or due to periphery fault cause being isolated between pressed on ring service node or lower ring service node time; all there will be following problem: business cannot normal ON; but MPLS looped network protection still starts to be switched; cause the flow of inaccessible business still to forward on each node of looped network, taking other can the bandwidth of normal ON business.
Summary of the invention
In order to avoid unreachable business flow occupied bandwidth and affect other and can reach business, on the one hand, the invention provides method for processing business in a kind of looped network, comprising:
First node in looped network obtains unreachable nodal information;
According to the unreachable nodal information obtained, in local service information, determine downtrodden business;
The downtrodden business determined is suppressed.
On the other hand, present invention also offers a kind of network equipment, comprising:
Obtaining module, for obtaining unreachable nodal information, and described unreachable nodal information being sent to determination module;
Described determination module, for the unreachable nodal information obtained according to described acquisition module, determines downtrodden business, and the downtrodden business determined is sent to compression module in local service information;
Described compression module, suppresses for the downtrodden business determined according to described determination module.
The invention has the beneficial effects as follows: by suppressing inaccessible business, avoid the outer protection channel bandwidth of occupying volume, minimum degree reduces the impact that can reach business on other.
Accompanying drawing explanation
Fig. 1 a is looped network business transmission path schematic diagram in looped network when normally working;
Fig. 1 b is the service path schematic diagram of looped network wrapping switchover mode when breaking down;
Fig. 1 c is the service path schematic diagram of looped network steering switchover mode when breaking down;
Method for processing business flow chart in the looped network that Fig. 2 provides for one embodiment of the invention;
Fig. 3 a and Fig. 3 b is the fault point schematic diagram in the embodiment of the present invention;
Fig. 4 a and Fig. 4 b is the preparation method schematic diagram of fault point information in the embodiment of the present invention;
The schematic diagram of the static mode acquisition ring-network topology that Fig. 5 a provides for one embodiment of the invention;
The flow chart of the dynamical fashion acquisition ring-network topology that Fig. 5 b provides for one embodiment of the invention;
The APS protocol massages form schematic diagram that Fig. 6 provides for one embodiment of the invention;
The flow chart of the dynamical fashion acquisition ring-network topology that Fig. 7 provides for one embodiment of the invention;
The looped network business schematic diagram that Fig. 8 provides for one embodiment of the invention;
The structural representation of the network equipment that Fig. 9 provides for one embodiment of the invention;
The structural representation of the acquisition module that Figure 10 provides for one embodiment of the invention;
The structural representation of the acquisition module that Figure 11 provides for one embodiment of the invention;
The structural representation of the fault point information obtainment unit that Figure 12 provides for one embodiment of the invention;
The structural representation of the topology acquisition unit that Figure 13 provides for one embodiment of the invention;
The structural representation of the dynamic subelement that Figure 14 provides for one embodiment of the invention;
The structural representation of the compression module that Figure 15 provides for one embodiment of the invention;
The structural representation of the network equipment that Figure 16 provides for one embodiment of the invention;
The structural representation of the network equipment that Figure 17 provides for one embodiment of the invention;
The structural representation of the network equipment that Figure 18 provides for one embodiment of the invention;
The structural representation of the network equipment that Figure 19 provides for one embodiment of the invention.
Embodiment
Method for processing business flow chart in the looped network that Fig. 2 provides for one embodiment of the invention, as shown in Figure 2, the method comprises:
100, the first node in looped network obtains unreachable nodal information;
101, first node is according to the unreachable nodal information obtained, and determines downtrodden (squelched) business in local service information.
102, this first node is suppressed the downtrodden business determined.
Wherein, first node is a kind of acute pyogenic infection of finger tip, can any one node in acute pyogenic infection of finger tip looped network.
Optionally, because the node adjacent with malfunctioning node/faulty link is the node first knowing that its adjacent node/adjacent link breaks down, therefore, this first node can refer in particular to the node adjacent with malfunctioning node/faulty link.In this case, the node adjacent with malfunctioning node/faulty link is suppressed the downtrodden business determined, can to reduce in looped network the number of nodes that business is suppressed, make node as much as possible can be absorbed in normal business and forward.
Optionally, the first node in above-mentioned looped network obtains unreachable nodal information (100), can comprise:
This first node from self, according to the first direction of looped network, looking up the fault node; After finding a malfunctioning node (claiming afterwards: Fisrt fault node) in a first direction first, from this Fisrt fault node, according to the second direction looking up the fault node of looped network, until also find a malfunctioning node (claiming afterwards: the second malfunctioning node) in a second direction first, wherein, second direction is the rightabout of first direction; Such as, using clockwise direction as first direction, can incite somebody to action counterclockwise as second direction, or can using counterclockwise as first direction, clockwise direction is as second direction etc.On above-mentioned first direction, to the second malfunctioning node from Fisrt fault node, the node between this is unreachable node.
Optionally, above-mentioned first node looking up the fault node can be: according to ring-network topology and fault point information searching malfunctioning node.
Optionally, after above-mentioned first node finds Fisrt fault node, when searching the second malfunctioning node according to second direction, record can also be carried out to the nodal information searched.
Such as, first node, from self, according to some directions (first direction or second direction), judges that the nodal information of each node in looped network is whether in the information of fault point.If the nodal information of a certain node is in the information of fault point, then this node is malfunctioning node.After finding Fisrt fault node, carry out opposite direction and search, and the nodal information that record search is crossed.When finding that in above-mentioned opposite direction the second malfunctioning node then stops searching, after recording the second malfunctioning node information, stop record nodal information.Now, the node corresponding to the nodal information be recorded is the node that can reach, and other nodes in looped network are unreachable node.If search according to first direction until get back to described first node all do not find Fisrt fault node, then stop searching, now can think that the whole nodes in looped network are and can reach node.
Optionally, when fault point is positioned at certain node, above-mentioned fault point information is the nodal information of this node; When fault point is positioned on link, above-mentioned fault point information is the nodal information of this faulty link two end node.Such as, in fig. 3 a, if the link between node 2 and node 3 there occurs fault, then above-mentioned fault point information refers to the nodal information of node 2 and node 3.The form of concrete fault point information can be expressed as (source node, destination node), or (destination node, source node) etc., there occurs fault with the link characterizing from above-mentioned source node to above-mentioned purpose node.Such as, node 2 is to the link occurs fault of node 3, then above-mentioned fault point information can be (2,3) or (2,3).
When certain link occurs fault (that is: fault point is positioned on link); according to APS (Automatic Protection Switching; referred to as: APS) regulation of agreement is carried out automatic fault and is switched; the node of trigger fault both link ends is respectively by first direction and second direction; send APS protocol massages to other nodes in looped network, in this APS protocol massages, fault point information can be carried.In looped network, arrive another node from a node and have both direction, in this both direction, the interstitial content of process may be different, APS protocol massages through the many path of interstitial content can be called major diameter APS protocol massages, and the APS protocol massages through the few path of interstitial content can be called minor axis APS protocol massages.As shown in fig. 4 a, node 2 sends APS protocol massages to other nodes in looped network, as Signal Fail (Signal Fail, referred to as SF) message, the fault point information of wherein carrying is (3,2); Node 3 sends SF message to other nodes in looped network, and the fault point information of wherein carrying is (2,3).At this moment, for node 2, major diameter APS protocol massages is SF(3 counter clockwise direction sending to node 3,2), and minor axis APS protocol massages is SF(3 clockwise direction sending to node 3,2).Accordingly, for node 3, major diameter APS protocol massages is SF(2 clockwise direction sending to node 2,3), and minor axis APS protocol massages is SF(2 counter clockwise direction sending to node 2,3).
When certain nodes break down (that is: fault point is positioned at certain node) in looped network, the node at these malfunctioning node two ends also can by first direction and second direction, APS protocol massages is sent to other nodes in looped network, and carry fault point information, this fault point information is exactly the node identification broken down, as node 3 finds that node 2 breaks down, then the fault point information of carrying in the APS protocol massages that node 3 sends is the node identification of node 2, as shown in Figure 3 b.
The fault point information of wherein carrying, after receiving these APS protocol massages, can be recorded by first node.Because the node adjacent with fault point all can send APS protocol massages, therefore, for same fault point, first node may receive multiple APS protocol massages.Optionally, for the APS protocol massages received, if fault point information is identical, record the fault point information that any one APS protocol massages carries.Wherein, the fault point information of above-mentioned indication is identical, can comprise source node, two kinds of situations that destination node is identical or contrary.Such as, be characterized by the fault point information of (3,2) and (2,3), think identical.
In looped network, multiple fault may occur, according to APS agreement, each fault can trigger automatic fault and switch simultaneously or successively.Optionally, in some scenes, the priority of disturbance switching can be different, such as, some moment are carrying out the disturbance switching of automatically initiating, and now just have the disturbance switching that manual operation triggers, if the priority of the disturbance switching of manual operation triggering is higher than the priority of the disturbance switching of automatically initiating, then this disturbance switching of automatically initiating will be regarded as cancelling, and equipment directly performs the disturbance switching that manual operation triggers.In embodiments of the present invention, this situation is called seizing of disturbance switching.Optionally, in other scene, a disturbance switching can't cause another disturbance switching to be regarded as cancelling.In embodiments of the present invention, this situation is called coexisting of disturbance switching.
In the scene that disturbance switching coexists, the fault point information that first node record receives.As shown in Figure 4 b, in this looped network, the link between node 2 and node 3, link between node 3 and node 4 all there occurs fault.Node 2, respectively by first direction and second direction, sends SF(3 to other nodes, 2), node 4, respectively by first direction and second direction, sends SF(3 to other nodes, 4).When node 1 receives SF(3,4) and SF(3,2) after, according to SF(3,4) determine that unreachable node is node 3 and node 4, according to SF(3,2) determine that unreachable node is node 3 and node 2, so, fault point information is recorded as (2,3,4).
In the scene that disturbance switching is seized, the disturbance switching be preempted then is considered as having cancelled, then the APS protocol massages that the disturbance switching only having priority high in looped network triggers; The fault point information that this APS protocol massages of first node record carries, and the fault point information recorded before disposing.
Optionally, when after fault recovery, the node at two ends, fault point no longer sends APS protocol massages.If in Preset Time, first node does not receive the APS protocol massages carrying same fault dot information again, then can think that this fault point has recovered normal, can by this fault point information deletion etc.
Optionally, ring-network topology can be, but not limited to be obtained by the following two kinds mode:
The first is static mode.Node in looped network, such as first node, upper configuration ring-network topology.Such as, when configuring looped network, at each node according to same direction (as clockwise or counterclockwise) configuration ring-network topology.As shown in Figure 5 a, suppose that looped network has 6 nodes altogether, after being configured according to clockwise direction, the ring-network topology on each node is respectively: node 1:123456, node 2:234561, node 3:345612, and node 4 ~ 6 can by that analogy, not repeat.Be configured can configure contrary with clockwise direction according to counterclockwise direction, do not repeat herein.
The second is dynamical fashion.First node, by carrying out the mutual of protocol massages with other nodes, obtains ring-network topology.As shown in Figure 5 b, can comprise:
501, first node receives first kind major diameter APS protocol massages, wherein, first kind major diameter APS protocol massages is from the adjacent node of first node, destination node is this first node, and first kind major diameter APS protocol massages carries the node number of source node identification, destination node information and this first kind major diameter APS protocol massages process.
Optionally, form in above-mentioned major diameter APS protocol massages can be as shown in Figure 6, wherein, node ID for the purpose of Destination node ID, Source node ID is source node ID, Bridge Request is bridge joint request, Reserved is reserved field, wherein, in reserved field, 1 ~ 4 bit may be used for the node number (NodeNum) recording this major diameter APS protocol massages process.Certainly, if 1 ~ 4 bit is not enough, several bit can be expanded for recording NodeNum more, not limiting herein.
502, according to the node number of first kind major diameter APS protocol massages process, the number of nodes in looped network is determined.
For example bright, for the ring network structure shown in Fig. 5 a, node 4 sends major diameter APS protocol massages to its adjacent node 3, when this major diameter APS protocol massages arrives destination node 3, the number of nodes recorded in the reserved field of APS protocol massages is 5, then node 3 can be determined, except node 3, looped network also comprises 5 nodes.
503, first node sends and/or receives Equations of The Second Kind major diameter APS protocol massages, records the source node identification and destination node information that wherein carry; Wherein, Equations of The Second Kind major diameter APS protocol massages carries the node number of source node identification, destination node information and this Equations of The Second Kind major diameter APS protocol massages process, be different from first kind major diameter APS protocol massages, the destination node of Equations of The Second Kind major diameter APS protocol massages is not described first node, but other nodes in looped network except first node.
Optionally, when being the situation of first node transmission Equations of The Second Kind major diameter APS protocol massages, the source node of Equations of The Second Kind major diameter APS protocol massages is first node, and destination node is the adjacent node of described first node; When being the situation of first node reception Equations of The Second Kind major diameter APS protocol massages, the source node of Equations of The Second Kind major diameter APS protocol massages is other nodes except described first node in looped network, and destination node is the adjacent node of other nodes.
When first node receives the Equations of The Second Kind major diameter APS protocol massages from other nodes, first node by Equations of The Second Kind major diameter APS protocol massages through node number add 1 after transmit this Equations of The Second Kind major diameter APS protocol massages to next node.
504, first node is according to the number of nodes in the looped network determined, the source node identification that above-mentioned first kind major diameter APS message and Equations of The Second Kind major diameter APS protocol massages carry and destination node information, determine ring-network topology.
Because the destination node of Equations of The Second Kind major diameter APS protocol massages and source node are adjacent, therefore, if first node receives the major diameter APS protocol massages that in looped network, every other node sends, just by the source node identification that wherein carries and destination node information, ring-network topology can be determined.
For example, still see the ring network structure shown in Fig. 5 a, for node 3, when node 3 is determined, in looped network except self, after also comprising 5 nodes, just can know in this looped network, one has 6 nodes.
Therefore, node 3 can receive such first kind major diameter APS protocol massages:
Node 2 sends to the major diameter APS message (2,3) of node 3 in the counterclockwise direction, and
Node 4 sends to the major diameter APS protocol massages (4,3) of node 3 in the clockwise direction.
Node 3 also can send and/or receive such Equations of The Second Kind major diameter APS protocol massages:
Node 1 sends to the major diameter APS protocol massages (1,2) of node 2 in the counterclockwise direction, and node 3 sends to the major diameter APS protocol massages (3,2) of node 2 in the clockwise direction;
The major diameter APS protocol massages (6,1) of node 6 sending node 1 in the counterclockwise direction, node 2 sends to the major diameter APS protocol massages (2,1) of node 1 in the clockwise direction;
Node 5 sends to the major diameter APS protocol massages (5,6) of node 6 in the counterclockwise direction, and node 1 sends to the major diameter APS protocol massages (1,6) of node 6 in the clockwise direction;
Node 4 sends to the major diameter APS protocol massages (4,5) of node 5 in the counterclockwise direction, and node 6 sends to the major diameter APS protocol massages (6,5) of node 5 in the clockwise direction;
Node 3 sends to the major diameter APS protocol massages (3,4) of node 4 in the counterclockwise direction, and node 5 sends to the major diameter APS protocol massages (5,4) of node 4 in the clockwise direction.
According to the number of nodes in looped network, first node can be known on some directions (such as, clockwise direction), all first kind major diameter APS protocol massages and Equations of The Second Kind major diameter APS protocol massages are whether sent or have received, if, the source node identification that then can carry according to first kind major diameter APS message and Equations of The Second Kind major diameter APS protocol massages and destination node information, determine ring-network topology.Such as, node 3 carries out record to above-mentioned source node, destination node information, just can obtain following information: on clockwise direction: (6,5), (1,6), (2,1), (3,2) ..., and counterclockwise upper: (2,3), (1,2), (6,1), (5,6) ...Thus, node 3 can determine that this ring-network topology is 345612 in the clockwise direction, and counter clockwise direction is 321654.
Optionally, as shown in Figure 7, on the basis of above-mentioned execution mode, can also comprise:
505, respectively according to the major diameter APS protocol massages on first direction and the major diameter APS protocol massages in second direction, determine ring-network topology, if the two is not identical, then illustrate that the configuration of looped network may have problems, generate alarm.
Optionally, first node, according to the unreachable nodal information obtained, is determined downtrodden business (101), can be comprised in local service information:
First node, according to described unreachable nodal information, determines whether there is the business that pressed on ring node and/or lower link point are unreachable node, if exist, then determines that this business is downtrodden business in local service information.Wherein, local service information at least can comprise: traffic direction, and link point identification under business pressed on ring node identification or business.
Optionally, first node is suppressed (102) fixed downtrodden business, Ke Yishi:
Based on the compacting of service channel.First node, according to the unreachable nodal information obtained and local service information, is suppressed the downtrodden business of every bar.
Such as, if the lower link point of business is unreachable, forwards stratification invalid flag position at this business incoming interface, abandon this business; Or, when being pressed the pressed on ring node of business described in first node is, can be this downtrodden business setting life span (Time To Live, referred to as: TTL), wherein, described life span is less than or equal to predetermined ttl threshold of router.By arranging the TTL of the business that is pressed, the transmission range of flow in looped network of the business of being pressed can be limited, reduce the impact that can reach business on other.
Optionally, above-mentioned ttl threshold of router can be any one in following several numerical value:
1, in traffic direction, from the jumping figure of the pressed on ring node to lower link point that are pressed business;
2, on business rightabout, from the jumping figure of the pressed on ring node to lower link point that are pressed business;
3, N+M, wherein, N is that M is the quantity of looped network interior joint from the pressed on ring node of business to the jumping figure of lower link point in traffic direction;
4, N+M-2, goes for the scene of lower link point Single Point of Faliure.
5,2M, goes for requiring lower scene to network environment.
If the pressed on ring node of business is unreachable, the then outgoing interface direction of from then on business, toward downstream direction send alarm indication signal (Alarm Indication Signal, referred to as: AIS) or forward direction defect instruction (Forward Defection Indicator, referred to as: FDI).
For Fig. 8, suppose that business 1,2,4 all enters looped network (node 1 is pressed on ring node) at node 1, business 1 and 4 leaves looped network (node 3 is the lower link point of business 1 and 4) at node 3, and business 2 leaves looped network (node 4 is the lower link point of business 2) at node 4; Business 3 enters looped network at node 2, and leave looped network (node 2 is the pressed on ring node of business 3, and node 1 is the lower link point of business 3) at node 1, then at node 1, local service information can be expressed as the content shown in table 1:
Table 1
Wherein, In represents pressed on ring, the lower ring of Out representative; Rw represents building ring passage (Ring working), and Rp represents guard ring passage (Ring protecting).
If the unreachable nodal information that node 1 obtains is node 3, so, node 1 is determined, business 1 and business 4 are downtrodden business.Due to the lower link point that node 3 is business 1 and 4, therefore, the flow of the business 1 and 4 received can discard by node 1, such as, can forward stratification invalidated identification, thus the flow of the business 1 and 4 received all can be dropped at business 1 and 4 incoming interface.
Optionally, first node is suppressed (102) to fixed downtrodden business and can also is:
Based on the compacting of ring passage.First node, according to downtrodden business, determines ring passage corresponding to described downtrodden business (work and protection channel), suppresses the business by ring channel transfer corresponding to downtrodden business.Such as, can arrange invalidated identification in the ring passage forwarding that downtrodden business is corresponding, then the business being forwarded to ring passage corresponding to downtrodden business all can be dropped.
Relative to the pressing mode based on service channel, the pressing mode strength disposal based on ring passage is larger, and compared with on high traffic during same ring passage, treatment effeciency is more excellent.
Optionally, the looped network related in above-described embodiment can be MPLS looped network, or based on the looped network of other agreements, such as, Resilient Packet Ring (Resilient Packet Ring, referred to as: RPR), embodiments of the invention do not limit this.
One of ordinary skill in the art will appreciate that: realizing all or part of of above-mentioned each embodiment of the method can have been come by the hardware that program command is relevant.Aforesaid program can be stored in a computer read/write memory medium.This program, when performing, performs and comprises above-mentioned each embodiment of the method; And aforesaid storage medium comprises: ROM, RAM, magnetic disc or CD etc. various can be program code stored medium.
The method for processing business based on looped network protection that the embodiment of the present invention provides, by suppressing inaccessible business, avoid the outer protection channel bandwidth of occupying volume, minimum degree reduces the impact that can reach business on other.
A kind of network equipment that another embodiment of the present invention provides, this network equipment can be said first node in said method execution mode, and therefore, this network equipment can perform the some or all of of description in said method embodiment.
As shown in Figure 9, this network equipment can comprise: obtain module 900, determination module 901 and compression module 902.Wherein, obtain module 900 for obtaining unreachable nodal information, and unreachable nodal information is sent to determination module 901; Determination module 901, for according to the unreachable nodal information obtaining module 900 acquisition, is determined downtrodden business, and fixed downtrodden business is sent to compression module 902 in local service information; Compression module 902 is suppressed for the downtrodden business determined determination module 901.
Optionally, as shown in Figure 10, above-mentioned acquisition module 900 specifically can comprise: first searches unit 900a, second searches unit 900b and obtains unit 900c.Wherein, first searches unit 900a for from the described network equipment self, according to the first direction in looped network, finds Fisrt fault node, and is sent to by the Fisrt fault node found second search unit 900b and obtain unit 900c; Second searches unit 900b for from Fisrt fault node, according to second direction looking up the fault node, until find the second malfunctioning node in a second direction, the second malfunctioning node is sent to and obtains unit 900c, wherein, second direction is the rightabout of first direction; Obtain unit 900c to be used for searching according to first the information that unit 900a and second searches unit 900b transmission, obtain unreachable nodal information, wherein, in a first direction, the node between Fisrt fault node and the second malfunctioning node is unreachable node.Wherein, Fisrt fault node is the malfunctioning node searched first in a first direction, and the second malfunctioning node is the malfunctioning node found first in a second direction.
Optionally, as shown in figure 11, obtain module 900 can also comprise: topology obtains unit 900d, for obtaining ring-network topology; And fault point information obtainment unit 900e, for obtaining fault point information.Further alternative, first searches unit 900a and second searches unit 900b and can obtain ring-network topology that unit 900d obtains and the fault point information searching Fisrt fault node that fault point information obtainment unit 900e obtains and the second malfunctioning node according to this topology.
Optionally, as shown in figure 12, fault point information obtainment unit 900e can comprise: receive subelement 900e1, the APS protocol massages that the adjacent node for receiving fault point sends, and carries fault point information in this APS protocol massages; Obtain subelement 900e2, for obtaining fault point information from receiving in APS protocol massages that subelement 900e1 receives; Sending subelement 900e3, searching unit 900b for sending to first to search unit 900a and second the fault point information obtaining subelement 900e2 acquisition.
Optionally, as shown in figure 13, topology obtains unit 900d and can comprise: static subelement 900d1, for static configuration ring-network topology; Or dynamic subelement 900d2, for by carrying out the mutual of protocol massages with other nodes in looped network, obtains ring-network topology.Be in easy consideration, in Figure 13, also show above-mentioned two subelements.
Optionally, as shown in figure 14, dynamic subelement 900d2 can comprise:
First process subelement 900d2a, for receiving first kind major diameter APS protocol massages, sends to number of nodes determination subelement 900d2b by the node number of described first kind major diameter APS protocol massages process; Wherein, described first kind major diameter APS protocol massages is from the adjacent node of this network equipment, destination node is this network equipment self, and described first kind major diameter APS protocol massages carries the node number of source node identification, destination node information and this first kind major diameter APS protocol massages process;
Number of nodes determination subelement 900d2b, for the node number of the first kind major diameter APS protocol massages process according to the first process subelement 900d2a transmission, determine the number of nodes in looped network, and the number of nodes in fixed looped network is sent to ring-network topology determination subelement;
Second process subelement 900d2c, for sending and/or receive Equations of The Second Kind major diameter APS protocol massages, the source node identification that record Equations of The Second Kind APS protocol massages carries and destination node information, send to ring-network topology determination subelement 900d2d by the source node identification carried in Equations of The Second Kind major diameter APS protocol massages and destination node information; Wherein, Equations of The Second Kind major diameter APS protocol massages carries the node number of source node identification, destination node information and this Equations of The Second Kind major diameter APS protocol massages process, be different from first kind major diameter APS protocol massages, the destination node of Equations of The Second Kind major diameter APS protocol massages is not the described network equipment;
Ring-network topology determination subelement 900d2d, for according to the number of nodes in the looped network that receives, and the source node identification carried in first kind major diameter APS protocol massages and Equations of The Second Kind major diameter APS protocol massages and destination node information, determine ring-network topology.
Optionally, above-mentioned determination module 901 specifically for: according to unreachable nodal information, in local service information, determine whether there is the business that pressed on ring node and/or lower link point are unreachable node; If exist, then determine that this business is downtrodden business.
Optionally, as shown in figure 15, above-mentioned compression module 902 comprises: the first press unit 902a, for suppressing fixed downtrodden business based on service channel; Or the second press unit 902b, for suppressing fixed downtrodden business based on ring passage.Be in easy consideration, in Figure 15, also show said two units.
Optionally, if the lower link point of business is unreachable, then the first press unit 902a specifically for: forward stratification invalid flag position at downtrodden business incoming interface, abandon downtrodden business; Or, for this downtrodden business setting life span (Time To Live, referred to as: TTL), wherein, described life span is less than or equal to predetermined ttl threshold of router; If the pressed on ring node of business is unreachable, then the first press unit 902a is used for: from the outgoing interface direction of downtrodden business, sends alarm indication information AIS or forward direction defect instruction FDI to downstream.
Optionally, the second press unit 902b specifically for: according to downtrodden business, determine the ring passage that downtrodden business is corresponding, the business by ring channel transfer suppressed.Under a kind of execution mode, the second press unit 902b is by forwarding stratification invalidated identification at ring passage, and the business of mode to ring channel transfer abandoning the business being forwarded to ring passage is suppressed.
The structural representation of the network equipment that Figure 16 provides for one embodiment of the invention, as shown in figure 16, this network equipment comprises processor (processor) 1601.Wherein, processor 1601 for obtaining unreachable nodal information, and determines downtrodden business according to unreachable nodal information in local service information, suppresses fixed downtrodden business.
Optionally, this processor 1601 can obtain unreachable nodal information in the following way: from the network equipment self of processor 1601 place, according to the first direction in looped network, looking up the fault node; After finding Fisrt fault node in a first direction, from Fisrt fault node, according to second direction looking up the fault node, until find the second malfunctioning node in a second direction, second direction is the rightabout of first direction; In a first direction, to the second malfunctioning node from Fisrt fault node, between node be unreachable node.Wherein, Fisrt fault node is the malfunctioning node found first in a first direction, and the second malfunctioning node is the malfunctioning node found first in a second direction.
Optionally, processor 1601 can according to according to ring-network topology and fault point information searching malfunctioning node.
Optionally, as shown in figure 17, this network equipment can also comprise: receiver 1602, the APS APS protocol massages that the adjacent node for receiving fault point sends, and carries fault point information in this APS protocol massages; Accordingly, processor 1601 obtains fault point information according to the APS protocol massages received in receiver 1602.
Optionally, as shown in figure 18, this network equipment can also comprise: transmitter 1603, realizing with the protocol massages of other nodes in looped network mutual, thus obtaining ring-network topology in processor 1601 for coordinating with receiver 1602.
Optionally, as shown in figure 19, this network equipment can also comprise: memory 1604, and the ring-network topology obtained for the ring-network topology that receives receiver 1602 and/or processor 1601 is preserved.
Such as, receiver 1602 receives first kind major diameter APS APS protocol massages, wherein, first kind major diameter APS protocol massages is from the adjacent node of this network equipment, destination node is this network equipment, and first kind major diameter APS protocol massages carries the node number of source node identification, destination node information and this first kind major diameter APS protocol massages process; Processor 1601, according to the node number of first kind major diameter APS protocol massages process, determines the number of nodes in looped network; Receiver 1602 sends and/or receives Equations of The Second Kind major diameter APS protocol massages, the source node identification that record Equations of The Second Kind major diameter APS protocol massages carries and destination node information; Wherein, the destination node of Equations of The Second Kind major diameter APS protocol massages is not the described network equipment; Equations of The Second Kind major diameter APS protocol massages carries the node number of source node identification, destination node information and this Equations of The Second Kind major diameter APS protocol massages process; Processor 1601 is according to the number of nodes in looped network, and the source node identification carried in first kind major diameter APS protocol massages and Equations of The Second Kind major diameter APS protocol massages and destination node information, determines ring-network topology.
Optionally, processor 1601 can according to described unreachable nodal information, determines whether there is the business that pressed on ring node and/or lower link point are unreachable node, if exist, then determine that described business is downtrodden business in local service information.
Optionally, processor 1601 can be suppressed fixed downtrodden business based on service channel, or suppresses fixed downtrodden business based on ring passage.
Such as, carrying out suppressing to fixed downtrodden business based on service channel can be the unreachable nodal information of processor 1601 according to acquisition, and local service information, suppresses downtrodden business.If the lower link point of business is unreachable, processor 1601 forwards stratification invalid flag position at downtrodden business incoming interface, abandons downtrodden business; If the pressed on ring node of business is unreachable, processor 1601, from the outgoing interface direction of downtrodden business, sends alarm indication information AIS or forward direction defect instruction FDI to downstream.
Based on ring passage to fixed downtrodden business carry out compacting can be processor 1601 according to downtrodden business, determine the ring passage that the business that is pressed is corresponding, the business by ring channel transfer suppressed.Such as, processor 1601 can forward stratification invalidated identification at ring passage, abandons the business being forwarded to ring passage.
Last it is noted that above each embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to foregoing embodiments to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.

Claims (12)

1. a method for processing business in looped network, is characterized in that, comprising:
First node in looped network obtains unreachable nodal information;
According to the unreachable nodal information obtained, in local service information, determine downtrodden business;
The downtrodden business determined is suppressed;
Described first node obtains unreachable nodal information, comprising:
Described first node from self, according to the first direction in looped network, looking up the fault node;
After finding Fisrt fault node in a first direction, from described Fisrt fault node, according to second direction looking up the fault node, until find the second malfunctioning node in a second direction, described second direction is the rightabout of described first direction; Described Fisrt fault node is the malfunctioning node found first in a first direction, and described second malfunctioning node is the malfunctioning node found first in a second direction;
In said first direction, to described second malfunctioning node from described Fisrt fault node, between node be unreachable node;
Fixed downtrodden business is suppressed, comprising: based on the compacting of service channel, or based on the compacting of ring passage;
Wherein, the described compacting based on service channel, comprising: described first node, according to the unreachable nodal information obtained and local service information, is suppressed downtrodden business;
If the lower link point of business is unreachable, described downtrodden business to be suppressed, comprising: first node forwards stratification invalid flag position at described downtrodden business incoming interface, abandons described downtrodden business; Or be described downtrodden business setting life span TTL, wherein, described TTL is less than or equal to predetermined ttl threshold of router;
If the pressed on ring node of business is unreachable, described downtrodden business to be suppressed, comprising: first node, from the outgoing interface direction of described downtrodden business, sends alarm indication information AIS or forward direction defect instruction FDI to downstream;
The described compacting based on ring passage, comprising: first node is according to downtrodden business, and the ring passage that the business that is pressed described in determining is corresponding, suppresses the business by described ring channel transfer;
Business by described ring channel transfer is suppressed, comprising: forward stratification invalidated identification at described ring passage, abandon the business being forwarded to described ring passage.
2. method according to claim 1, is characterized in that, described looking up the fault node comprises:
Described first node is malfunctioning node according to ring-network topology and fault point information searching.
3. method according to claim 2, is characterized in that, described fault point information obtains by the following method:
The APS APS protocol massages that the adjacent node that described first node receives described fault point sends, carries described fault point information in described APS protocol massages.
4. method according to claim 2, is characterized in that, described ring-network topology obtains in the following way:
Described first node configures described ring-network topology; Or
Described first node, by carrying out the mutual of protocol massages with other nodes in described looped network, obtains described ring-network topology.
5. method according to claim 4, is characterized in that, described first node, by carrying out the mutual of protocol massages with other nodes in described looped network, obtains described ring-network topology, comprising:
First node receives first kind major diameter APS APS protocol massages, wherein, described first kind major diameter APS protocol massages is from the adjacent node of described first node, destination node is described first node, and described first kind major diameter APS protocol massages carries the node number of source node identification, destination node information and this first kind major diameter APS protocol massages process;
According to the node number of described first kind major diameter APS protocol massages process, determine the number of nodes in looped network;
Described first node sends and/or receives Equations of The Second Kind major diameter APS protocol massages, records source node identification and destination node information that described Equations of The Second Kind major diameter APS protocol massages carries; Wherein, described Equations of The Second Kind major diameter APS protocol massages carries the node number of source node identification, destination node information and this Equations of The Second Kind major diameter APS protocol massages process; The destination node of described Equations of The Second Kind major diameter APS protocol massages is other nodes in looped network except first node;
First node is according to the number of nodes in described looped network, and the source node identification carried in described first kind major diameter APS protocol massages and described Equations of The Second Kind major diameter APS protocol massages and destination node information, determine ring-network topology.
6. the method according to any one of claim 1-5, is characterized in that, the described unreachable nodal information according to obtaining, and determines downtrodden business, comprising in local service information:
Described first node, according to described unreachable nodal information, determines whether there is the business that pressed on ring node and/or lower link point are unreachable node, if exist, then determines that described business is downtrodden business in local service information.
7. a network equipment, is characterized in that, comprising:
Obtaining module, for obtaining unreachable nodal information, and described unreachable nodal information being sent to determination module;
Described determination module, for the unreachable nodal information obtained according to described acquisition module, determines downtrodden business, and fixed downtrodden business is sent to compression module in local service information;
Described compression module, suppresses for the downtrodden business determined described determination module;
Described acquisition module comprises:
First searches unit, for from the network equipment self, according to the first direction in looped network, finds Fisrt fault node, is sent to by described Fisrt fault node second search unit and obtain unit; Wherein, described Fisrt fault node is the malfunctioning node found first in a first direction;
Described second searches unit, for from described Fisrt fault node, according to second direction looking up the fault node, until find the second malfunctioning node in a second direction, described second malfunctioning node is sent to described acquisition unit, and described second direction is the rightabout of described first direction; Wherein, described second malfunctioning node is the malfunctioning node found first in a second direction;
Described acquisition unit, for searching according to first the information that unit and second searches unit transmission, obtain unreachable nodal information, wherein, in a first direction, the node between Fisrt fault node and the second malfunctioning node is unreachable node;
Described compression module comprises:
First press unit, for suppressing fixed downtrodden business based on service channel; Or the second press unit, for suppressing fixed downtrodden business based on ring passage;
Wherein, described first press unit specifically for: according to the unreachable nodal information obtained, and local service information, suppresses downtrodden business;
If the lower link point of business is unreachable, then described first press unit is specifically for forwarding stratification invalid flag position at described downtrodden business incoming interface, abandons described downtrodden business; Or be described downtrodden business setting life span TTL, wherein, described TTL is less than or equal to predetermined ttl threshold of router;
If the pressed on ring node of business is unreachable, then described first press unit is used for the outgoing interface direction from described downtrodden business, sends alarm indication information AIS or forward direction defect instruction FDI to downstream;
Described second press unit, specifically for according to downtrodden business, is determined the ring passage that described downtrodden business is corresponding, is suppressed the business by described ring channel transfer;
Described second press unit is by forwarding stratification invalidated identification at described ring passage, and the business of mode to described ring channel transfer abandoning the business being forwarded to described ring passage is suppressed.
8. the network equipment according to claim 7, is characterized in that, described acquisition module also comprises:
Topology obtains unit, for obtaining ring-network topology; And fault point information obtainment unit, for obtaining fault point information;
Described first searches unit and described second searches unit Fisrt fault node and described second malfunctioning node according to the ring-network topology of described ring-network topology acquisition unit acquisition and the fault point information searching of described fault point information obtainment unit acquisition.
9. the network equipment according to claim 8, is characterized in that, described fault point information obtainment unit comprises:
Receiving subelement, the APS APS protocol massages that the adjacent node for receiving fault point sends, in described APS protocol massages, carrying described fault point information;
Obtain subelement, obtain fault point information in the APS protocol massages that receives from described reception subelement;
Send subelement, the fault point information for being obtained by described acquisition subelement sends to described first to search unit and described second and searches unit.
10. the network equipment according to claim 8, is characterized in that, described topology obtains unit and comprises:
Static subelement, for configuring described ring-network topology; Or,
Dynamic subelement, for by carrying out the mutual of protocol massages with other nodes in looped network, obtains described ring-network topology.
11. network equipments according to claim 10, is characterized in that, described dynamic subelement comprises:
First process subelement, for receiving first kind major diameter APS protocol massages, sends to number of nodes determination subelement by the node number of described first kind major diameter APS protocol massages process; Wherein, described first kind major diameter APS protocol massages is from the adjacent node of the described network equipment, destination node is the described network equipment, and described first kind major diameter APS protocol massages carries the node number of source node identification, destination node information and this first kind major diameter APS protocol massages process;
Number of nodes determination subelement, for the node number of the first kind major diameter APS protocol massages process according to the first process subelement transmission, determines the number of nodes in looped network, and the number of nodes in fixed looped network is sent to ring-network topology determination subelement;
Second process subelement, for sending and/or receive Equations of The Second Kind major diameter APS protocol massages, record source node identification and destination node information that described Equations of The Second Kind APS protocol massages carries, the source node identification carried in described Equations of The Second Kind major diameter APS protocol massages and destination node information are sent to described ring-network topology determination subelement; Wherein, described Equations of The Second Kind major diameter APS protocol massages carries the node number of source node identification, destination node information and described Equations of The Second Kind major diameter APS protocol massages process; The destination node of described Equations of The Second Kind major diameter APS protocol massages is other nodes in looped network except the described network equipment;
Described ring-network topology determination subelement, for according to the number of nodes in the looped network that receives, the source node identification carried in described first kind major diameter APS protocol massages and described Equations of The Second Kind major diameter APS protocol massages and destination node information, determine ring-network topology.
12. network equipments according to any one of claim 7-11, it is characterized in that, described determination module specifically for: according to described unreachable nodal information, in local service information, determine whether there is the business that pressed on ring node and/or lower link point are unreachable node; If exist, then determine that described business is downtrodden business.
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