CN102318273B

CN102318273B - Channel group protection method and system, node device

Info

Publication number: CN102318273B
Application number: CN2011800011335A
Authority: CN
Inventors: 裴玲; 陈亘; 谭伟; 阎君
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2011-07-28
Filing date: 2011-07-28
Publication date: 2013-12-18
Anticipated expiration: 2031-07-28
Also published as: CN102318273A; WO2012167490A1

Abstract

The invention discloses a protection method and system, node device. The method comprises: searching a protection channel group for a working channel by a first node device according to a mapping relation between the working channel and a protection channel when a first node device detects that the working channel of a working channel group breaks down; bridging the protection channel in the protection channel group searched by the first node device with the working channel in the working channel group by a second node device; and the first node device switches in a whole the transaction sent on the working channel in the working channel group to the bridged protection channel for transmission. According to the protection technology, the working channel and protection channel between the first node device and the second node device are grouped such that when the working channel breaks down and needs overall replacement, the protection channel corresponded with the working channel can be rapidly found to perfume the transaction replacement, which can improve the channel replacement frequency and be favor of normal transmission.

Description

The guard method of a kind of passage group and system, node device

Technical field

The present invention relates to communication technical field, relate in particular to the guard method of a kind of passage group, node device and passage group protection system.

Background technology

But to switch be a kind of Survivability technology in protection, but Survivability technology is by providing from the service disruption ability of Resume service to improve the technology of the reliability performance of network.This technology can be applied to all places that service is provided, and for communication network, provides protection to switch the function an of necessity especially.

Protection is switched in communication network and is had a wide range of applications.SDH (Synchronous Digital Hierarchy for example; Synchronous Digital Hierarchy) or SONET (Synchronous Optical Networking; 1+1 protection is provided Synchronous Optical Network); the 1:N protection; two fine ring/four fibre loop multiplying segment protections; SNCP (Sub-network Connection Protection; SNCP) protection and DNI (Dual-node interconnection; dual node interconnection) protection; and the protection of OTN (Optical transport network, optical transfer network) etc.

In communication network; the ability of the anti-inefficacy of protection channel and service aisle is generally identical; therefore the probability that protection channel and service aisle lost efficacy should be also identical; if adopt the protected mode of 1 protection channel protection N bar service aisle (to be called: the 1:N protected mode); in the larger situation of N, the probability of a protection channel of many service aisle contentions is still very large.Now, in network, can not provide the protection for some service aisle, therefore, carrying out the M:N protected mode in communication network is very necessary (1<=M<=N).

The M:N protected mode existed in prior art, be the individual protect type, is also M bar protection channel protection N bar service aisle, and there are problems more as described below in it:

First; for M:N, protect: when a large number of services signal transmits by identical service aisle (service aisle W as shown in Figure 1); adopt individual protect (the protection channel P shown in Fig. 1 is for the protection of service aisle W) can cause the processing time long, the time that business is switched to protection channel P from service aisle W is overtime.

Second, for Ethernet service, FC (Fiber Channel, optical-fibre channel) etc. business when capacity of trunk is very low, requires to adopt Virtual Concatenation in the SDH network, in the OTN network, require to adopt the inverse multiplexing technology to carry out transport service, this is very high to the requirement postponed between transmission line, and business need integral body is switched (as shown in Figure 2, the business on service aisle W1, W2, W3 all needs to switch).Current individual switching technique also can't be supported the requirement that integral body is switched.

Summary of the invention

Embodiment of the present invention technical problem to be solved is can't meet for the individual Switch mode existed in prior art the demand that business is switched; the guard method of a kind of passage group, node device and system are provided; in the time of can effectively guaranteeing that service aisle group that correlation is very strong breaks down; can be switched on qualified protection channel group simultaneously; can also promote the efficiency that the passage group is switched, save the time of channel switching.

The embodiment of the present invention provides the guard method of a kind of passage group, and described passage group is between first node equipment and Section Point equipment, and the method comprises:

When the first node equipment sensing breaks down to the service aisle in the service aisle group, according to the mapping relations between service aisle group and protection channel group, for described service aisle group is searched the protection channel group;

Service aisle in protection channel in the protection channel group that Section Point equipment finds first node equipment and described service aisle group carries out bridge joint; And

First node equipment is switched to the protection channel of bridge joint by the business integral body transmitted on all working passage in this service aisle group and is transmitted.

The embodiment of the present invention provides a kind of node device, comprising:

Memory module, for storing service aisle group between described node device and another node device and the mapping relations between the protection channel group;

Search module, while breaking down for the service aisle that detects described service aisle group, according to the mapping relations between the service aisle group of safeguarding in described memory module and protection channel group, for described service aisle group is searched the protection channel group;

Sending module, for by described search module searches to the protection channel of protection channel group send switching request to another node device, wherein, carry the sign of described service aisle group in this switching request, and the sign of the sign of the sign of service aisle, protection channel group, protection channel is wherein a kind of;

Business is switched module; service aisle in the protection channel of protection channel group and service aisle group is carried out after bridge joint completes to the bridge joint confirmation of sending for receiving described another node device, and respond described bridge joint confirmation and the business integral body transmitted on all working passage in this service aisle group is switched to the protection channel of bridge joint is transmitted.

The embodiment of the present invention also provides a kind of node device, comprising:

Receiver module, for receiving the switching request sent by protection channel from another node device; Wherein, carry the sign of described service aisle group in this switching request, and the sign of the sign of the sign of service aisle, protection channel group, protection channel is wherein a kind of;

Bridge module; for the mapping relations of service aisle and protection channel are carried out to verification; after verification is passed through, the service aisle of the protection channel in described protection channel group and described service aisle group is carried out to bridge joint, and return to the bridge joint confirmation to described another node device.

Correspondingly, the embodiment of the present invention also provides a kind of passage group protection system, comprising: comprise first node equipment and Section Point equipment;

Described first node equipment and Section Point equipment are for storing service aisle group between described first node equipment and Section Point equipment and the mapping relations between the protection channel group;

When described first node equipment also breaks down for the service aisle that detects the service aisle group, according to the mapping relations between service aisle group and protection channel group, for described service aisle group is searched the protection channel group; And send switching request by the protection channel in the protection channel group found to Section Point equipment;

Described Section Point equipment, also for after receiving switching request, carries out verification to the mapping relations of service aisle and protection channel; When verification is passed through, the service aisle of the protection channel in described protection channel group and described service aisle group is carried out to bridge joint;

Described first node equipment also is switched to the protection channel of bridge joint for the business integral body transmitted on all working passage by described service aisle group and is transmitted.

The passage group guard method that the embodiment of the present invention provides, node device and passage group protection system; due to service aisle and protection channel are divided into groups; when the service aisle group breaks down and needs whole switching; can find fast the protection channel corresponding with it and carry out switching of business; promoted the efficiency that the passage group is switched; save the time of channel switching, quick-recovery is normal soon to make the business transmission.

The accompanying drawing explanation

In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, below will the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.

Fig. 1 is the schematic diagram that under individual protect pattern of the prior art, service needed on single service aisle is switched;

Fig. 2 is the schematic diagram that under individual protect pattern of the prior art, service needed on a plurality of service aisles is switched;

Fig. 3 is the composition schematic diagram of a kind of passage group protection system provided by the invention;

Fig. 4 is the schematic diagram of the embodiment that in the present invention, service aisle and protection channel divided into groups;

Fig. 5 is the concrete composition schematic diagram of first node apparatus embodiments one provided by the invention;

Fig. 6 is the schematic diagram of memory module embodiment in first node equipment provided by the invention;

Fig. 7 searches the composition schematic diagram of module embodiment in first node equipment provided by the invention;

Fig. 8 is the schematic diagram that the sending module of first node equipment in the present invention sends switching request embodiment mono-;

Fig. 9 is the schematic diagram that the sending module of first node equipment in the present invention sends switching request embodiment bis-;

Figure 10 is the schematic diagram that the sending module of first node equipment in the present invention sends switching request embodiment tri-;

Figure 11 is the composition schematic diagram that the business of first node equipment provided by the invention is switched module embodiment;

Figure 12 is the composition schematic diagram of first node apparatus embodiments two provided by the invention;

Figure 13 is the composition schematic diagram of Section Point apparatus embodiments one provided by the invention;

Figure 14 is the composition schematic diagram of the memory module embodiment of Section Point equipment provided by the invention;

Figure 15 is the composition schematic diagram of the bridge module embodiment of Section Point equipment provided by the invention;

Figure 16 is the schematic flow sheet of passage group guard method embodiment mono-provided by the invention

Figure 17 is the schematic flow sheet of the embodiment of the method for in passage group provided by the invention guard method, service aisle and protection channel being divided into groups;

Figure 18 searches the schematic flow sheet of the embodiment of the method for protection channel group in passage group provided by the invention guard method;

Figure 19 is the schematic flow sheet that in passage group provided by the invention guard method, first node equipment carries out business reverse method flow implementation example;

Figure 20 is the schematic flow sheet that in passage group provided by the invention guard method, first node equipment carries out passage bridging method embodiment.

Embodiment

Technical problem to be solved by this invention is to provide the guard method of a kind of passage group and system; and corresponding node device; in the time of can effectively guaranteeing that service aisle group that correlation is very strong breaks down; can be switched on qualified protection channel group simultaneously; the efficiency that the passage group is switched can also can be promoted; save the time of channel switching, quick-recovery is normal soon to make the business transmission.

At first it should be noted that, the service aisle in the present invention and protection channel refer to the passage that carries out the business transmission between two network nodes.Laying respectively at the function and efficacy that the node device at service aisle or protection channel two ends possesses is identical in fact; just in as switching request initiator and recipient; its function and efficacy is different; in the embodiment of the present invention for the node device that clearly demonstrates two ends when realizing passage group resist technology provided by the invention; the operation of carrying out separately is different; respectively with first node equipment and Section Point equipment to show differentiation, in order to understand more intuitively the embodiment of the present invention.

On first node equipment in the embodiment of the present invention and Section Point equipment, all safeguard by service aisle group and protection channel group; protection relation between protection channel group and service aisle group is determined; service aisle in the service aisle group breaks down; need to carry out that business is switched and this business is switched exigent to time delay the time, the business transmitted on whole service aisle group can be switched on the protection channel group and carry out.In the embodiment of the present invention, by illustrating first node equipment and Section Point equipment, how service aisle and protection channel are divided into groups and mated the relation between them; When service aisle breaks down, how to judge and need to whether need integral body to switch its place service aisle group; And how for needing whole service aisle group of switching to search corresponding protection channel group; After finding the protection channel group, first node equipment how to send switching request so that Section Point equipment carries out bridge joint to service aisle and protection channel; And how first node equipment switches the business on protection channel and is transmitted.

Below in conjunction with Fig. 3～Figure 15, the concrete composition of passage group protection system provided by the invention and first node equipment wherein and Section Point equipment is described in detail.

Referring to Fig. 3, the composition schematic diagram that Fig. 3 is a kind of passage group protection system provided by the invention.The system that the present embodiment provides comprises first node equipment 1 and Section Point equipment 2.

First node equipment 1 and Section Point equipment 2 are for storing service aisle group between first node equipment 1 and Section Point equipment 2 and the mapping relations between the protection channel group;

When first node equipment 1 also breaks down for the service aisle of work of detection and examination passage group, according to the mapping relations between service aisle group and protection channel group, for described service aisle group is searched the protection channel group; And send switching request by the protection channel in the protection channel group found to Section Point equipment 2.

Section Point equipment 2, also for after receiving switching request, carries out verification to the mapping relations of service aisle and protection channel; When verification is passed through, the service aisle of the protection channel in described protection channel group and described service aisle group is carried out to bridge joint.

First node equipment 1 also is switched to the protection channel of bridge joint for the business integral body transmitted on all working passage by described service aisle group and is transmitted.

First node equipment 1 and Section Point equipment 2 all need the service aisle between them and protection channel are divided into groups respectively; form service aisle group and protection channel group; and safeguard the reserved resource table that stores service aisle group and protection channel group and mapping relations between the two; preferably; first node equipment 1 and Section Point equipment 2 also can be safeguarded the protection channel group state table that means the use state of each protection channel in the protection channel group, the following describes and how service aisle and protection channel are divided into groups.

Referring to Fig. 4, Fig. 4 is to the divided into groups schematic diagram of embodiment of service aisle and protection channel in the present invention.Between first node equipment 1 and Section Point equipment 2, many service aisles are arranged, be respectively W1, W2, W3, W4, W5, W6, W7, W8, W9, W10; Simultaneously, also have many protection channel P1, P2, P3, P4, P5, P6, P7 between first node equipment 1 and Section Point equipment 2.The present invention adopts the pattern of protection channel group Protection passage group; at first service aisle and protection channel are divided into groups; the grouping principle can by first node equipment 1 and Section Point equipment 2 be self-defined or consult to decide; the service aisle that for example will carry same business is divided into a service aisle group, or will be divided into by the service aisle in same services layer path a service aisle group.Specifically as shown in Figure 4, W1, W2, W3 are classified as to the WG1 group, W4, W5, W6 are classified as the WG2 group, and W7, W8, W9 are classified as the WG3 group, and W10 and other service aisle do not have correlation, can oneself become one group of WG4; For protection channel, P1, P2, P3 can be classified as to the PG1 group, P4, P5, P6 are classified as the PG2 group, and P7 can have one group of PG3 of one's own; As shown in Figure 4, the grouping of 2 pairs of service aisles of first node equipment 1 and Section Point equipment and protection channel is consistent.

Preferably; after 2 pairs of service aisles of first node equipment 1 and Section Point equipment and protection channel are divided into groups; each comfortable local maintenance reserved resource table; this reserved resource table is responsible for service aisle in writing task passage group and the mapping relations between the protection channel in the protection channel group, and first node equipment 1 and Section Point equipment 2 need to safeguard identical reserved resource table.

As shown in table 1, be the reserved resource table of safeguarding on first node equipment 1 and Section Point equipment 2.

Table 1: reserved resource table

Protection channel group as shown in table 1, that PG1 is WG1, the while also can be used as the protection channel group of WG2; The protection channel group that PG2 is WG3, the correlation of W10 and other service aisles is little, and therefore can become separately one group is designated as WG4, for its configuration protection passage group PG3, only comprises a protection channel P7 in this PG3.PG4 comprises two protection channel P8 and P9, and it is configured to the protection channel of WG5.For the service aisle in each service aisle group, can set its priority, as shown in table 1, the priority that the priority of W1 is 1, W5 is 6, can certainly its priority be set to " default ", expression can its priority be random.

If the W1 in WG1 and W2 can independently switch, although it has been referred in WG1, but also can be switched as one group separately, with maximum compatibility individual Switch mode of the prior art, be met the needs that some needs carry out the service aisle that individuality switches.

Preferably, first node equipment 1 and Section Point equipment 2 are safeguarded protection channel group state table in addition, so that the service aisle in the service aisle group while breaking down, is searched corresponding protection channel group and switched in this protection channel group state table.

Referring to table 2, it is the protection channel group state table of safeguarding on first node equipment 1 of the present invention and Section Point equipment 2.

Table 2: protection channel group state table

As shown in table 2, protection channel group state table is used for the use state of record protection passage, and the first node equipment 1 and the Section Point equipment 2 that are positioned at the protection channel two ends need to safeguard identical protection channel group state table.

If the state of a protection channel group changes, the state of its inner each protection channel changes simultaneously; If belong to the protection channel of certain protection channel group in fault or disabled state; the state of corresponding protection channel group should be in fault or disabled state; the protection channel P8 in the PG4 in table 2 for example; it is in fault or disabled state; therefore; corresponding PG4 is in fault or disabled state; can not be as the protection channel of WG5; but P9 does not wherein break down; when there being service aisle need to carry out individuality while switching, still can being switched to the enterprising industry business of P9 and transmitting.

In addition; PG1 is due to the protection channel group of while as WG1 and WG2; therefore; when it is taken by WG1; its idle condition is designated N; seizure condition is designated Y; if at this time WG2 has also occurred that integral body switches demand; can carry out the protection channel group according to priority seizes; associative list 1 is known, and the priority of the service aisle in WG3 is less than the priority of service aisle in WG2, therefore; WG2 can seize the PG2 in idle condition this moment, and the business transmitted on the service aisle of WG2 is switched on the protection channel group PG2 that belongs to WG3 originally and is transmitted.

Above-mentioned describing in detail on first node equipment 1 and Section Point equipment 2 needs the reserved resource table safeguarded and the particular content of protection channel group state table, below will illustrate first node equipment 1 and Section Point equipment 2 and how utilize the reserved resource table of its maintenance and service aisle group that protection channel group state table is switched for needs integral body to carry out business to switch.

Referring to Fig. 5, the concrete composition schematic diagram that Fig. 5 is first node apparatus embodiments one provided by the invention.The first node equipment 1 that the present embodiment provides comprises: memory module 10, search module 11, sending module 12, business and switch module 13.

Memory module 10, for storing service aisle group between first node equipment 1 and another node device (being Section Point equipment 2) and the mapping relations between the protection channel group.

Preferably, also store the use state of each protection channel in described protection channel group in this memory module 10.

Search module 11, while breaking down for the service aisle that detects described service aisle group, according to the service aisle group of safeguarding in described memory module 10 and the mapping relations between the protection channel group, for described service aisle group is searched the protection channel group.

Sending module 12, for sending switching request by described protection channel of searching the protection channel group that module 11 finds to another node device; Wherein, carry the sign of described service aisle group in this switching request, and the sign of the sign of the sign of service aisle, protection channel group, protection channel is wherein a kind of.

Business is switched module 13; service aisle in the protection channel of protection channel group and service aisle group is carried out after bridge joint completes to the bridge joint confirmation of sending for receiving described another node device, and respond described bridge joint confirmation and the business integral body transmitted on all working passage in this service aisle group is switched to described protection channel is transmitted.

Alternatively, described first node equipment 1 also comprises:

Grouping module 14, be divided into a service aisle group for the service aisle that will carry same business, maybe will be divided into by the service aisle in same services layer path a service aisle group, and put at least one protection channel group for each service aisle assembly.

Referring to Fig. 6, the schematic diagram that Fig. 6 is memory module 10 embodiment in first node equipment 1 provided by the invention.In the present embodiment, memory module 10 comprises: reserved resource maintenance unit 100, state-maintenance unit 101.

Reserved resource maintenance unit 100, for storing the mapping relations between service aisle group and protection channel group.

State-maintenance unit 101, for the use state of each protection channel of storage protection passage group.

Service aisle and the mapping relations between protection channel of reserved resource maintenance unit 100 storages of memory module 10 are as shown in table 1; the use state of protection channel in state-maintenance unit 101 in the protection channel group of storage as the free time in table 2, take, as shown in disabled status, do not repeat them here.

Search module 11 according to the protection channel group state table of safeguarding in this state-maintenance unit 101; for the service aisle group is searched suitable protection channel group; but before it searches the protection channel group; also need to judge whether this service aisle group is to need integral body to switch; below just will introduce how to judge whether the service aisle group needs integral body to switch, and search the implementation procedure of protection channel for it.

Referring to Fig. 7, the composition schematic diagram that Fig. 7 is first node apparatus embodiments two provided by the invention.As shown in Figure 7, the modules of first node equipment 1 in comprising embodiment mono-that this enforcement provides, also comprise:

Whether detecting fault module 15 is, while carrying the service aisle of same business, to detect arbitrary service aisle in described service aisle group to break down for the service aisle in described service aisle group; Concrete, when arbitrary service aisle breaks down in described service aisle group, confirm that this service aisle group needs integral body to switch; Or be while passing through the service aisle in same services layer path for the service aisle in described service aisle group, whether the quantity of detecting the service aisle broken down in described service aisle group surpasses a predetermined value; Particularly, when the quantity of the service aisle broken down surpasses a predetermined value, confirm that this service aisle group needs integral body to switch in described service aisle group.

It should be noted that, a service aisle in the service aisle group its local terminal detected or there is fault in far-end, or local terminal or far-end think that this service aisle is the fail operation passage while having the switching request order.

When confirming that the service aisle group needs integral body to switch, first node equipment 1 search module 11 according in reserved resource maintenance unit 100 storage the protection channel group and the mapping relations between the service aisle group, search idle protection channel group in state storage unit 101; When there is no idle protection channel group, the protection channel group of the service aisle group that the protection channel group of selection low service aisle group than the priority that needs the whole service aisle group that switch is switched as needs integral body.Then send switching request by the protection channel in this protection channel group to Section Point equipment 2.

Associative list 1 and table 2 illustrate, known in table 1, PG1 is due to the protection channel group of while as WG1 and WG2, therefore, when it is taken by WG1, its idle condition is designated N, seizure condition is designated Y, if at this time WG2 has also occurred that integral body switches demand, can carry out the protection channel group according to priority seizes, the priority of the service aisle in WG3 is less than the priority of service aisle in WG2, therefore, WG2 can seize the PG2 in idle condition this moment, protection channel using PG2 as WG2, in order to further the business transmitted on the service aisle of WG2 is switched on the protection channel group PG2 that belongs to WG3 and is transmitted.

After once first node equipment 1 is determined the protection channel group of selecting, a kind of Section Point equipment 2 that sends to that is carried in switching request in the sign of the sign of the service aisle group that it can be switched needs integral body and the sign of service aisle, protection channel group, the sign of protection channel.In the present embodiment, APS (Automatic Protection Switching, APS) message mechanism has been expanded to the switching request transmission.

Particularly, the sending module 12 in Fig. 5 can send to Section Point equipment 2 by switching request by following three kinds of modes, and correspondingly, Section Point equipment 2 also has three kinds of modes to carry out the relation between verifying work passage and protection channel, specific as follows:

Mode 1: described first node equipment 1 sends APS message on each protection channel of protection channel group, the sign that carries described service aisle group of the APS message sent on described single protection channel, and the sign that sends service aisle corresponding to the protection channel of this APS message, Section Point equipment receives respectively described APS message on each protection channel, identify the sign of the service aisle group of carrying in described APS message and the sign of service aisle, receive service aisle group corresponding to the protection channel of described APS message and the sign of service aisle according to service aisle group and mapping relationship searching between the protection channel group, whether the sign of the described service aisle group that verification finds is identical with the sign of the described service aisle group identified, and whether the sign of the described service aisle that verification finds is identical with the sign of the described service aisle identified, if above-mentioned two check results are all identical, verification is passed through

Specifically refer to Fig. 8, Fig. 8 is the schematic diagram that the sending module 12 of first node equipment 1 in the present invention sends switching request embodiment mono-.

As shown in Figure 8; when the W1 in WG1 and W2 break down; the sending module of first node equipment 1 is by the ID of fault WG (WG1); and in this WG1, the ID (W1 or W2) of each service aisle is inserted in the reserve bytes of APS message; then send APS message on the protection channel of each in PG1; alternatively, carry the same fault request type in this APS message.After Section Point equipment 2 receives corresponding A PS information respectively on each protection channel of protection channel group, the ID (WG1) of identification WG and the ID (W1 and W2) of service aisle from APS message, then according to the service aisle group in the table 1 of its local storage and the mapping relations between the protection channel group, search WG that the protection channel P1 that receives described APS message and P2 are corresponding and the ID of WG, whether the ID of the described WG that verification finds is identical with the ID (WG1) of the described WG identified, and whether the ID of the described service aisle that verification finds is identical with the ID (W1 and W2) of the described service aisle identified, if above-mentioned two check results are all identical, verification is passed through.

Wherein, as follows to the APS extension of message:

Mode 2: first node equipment 1 selects a protection channel to send APS message according to the order of sequence from described protection channel group, carries the sign of all protection channels in the sign of described service aisle group and described protection channel group in this APS message;

Receive this APS message on the protection channel that Section Point equipment 2 is selected at first node equipment 1, identify the sign of the service aisle group of carrying in this APS message and the sign of all protection channels, according to the mapping relations between service aisle group and protection channel group, search the sign of service aisle group corresponding to the protection channel group at the protection channel place that first node equipment 1 selects and the sign of all protection channels that the described protection channel group found comprises, whether the sign of the described service aisle group found of verification is identical with the sign of the described service aisle group identified, and whether the sign of the described all protection channels that find of verification is identical with the sign of the described all protection channels that identify, if above-mentioned two check results are all identical, verification is passed through.

Specifically refer to Fig. 9, shown in Fig. 9 is the schematic diagram that in the present invention, sending module 12 sends switching request embodiment bis-.

As shown in Figure 9, when the W1 in WG1 and W2 break down, the sending module of first node equipment 1 is selected a protection channel P1 in PG1, inserts the ID (WG1) of WG and the ID (P1 and P2) of all protection channels that PG1 comprises in APS message.Receive this APS message on the protection channel P2 that Section Point equipment 2 is selected at first node equipment 1, identify the ID (WG1) of the WG carried in this APS message and the ID (P1 and P2) of all protection channels, according to the service aisle group in the table 1 of its local storage and the mapping relations between the protection channel group, search the ID of the WG that the PG1 at the protection channel P1 place that first node equipment 1 selects is corresponding and the ID of all protection channels that the described PG1 found comprises, whether the ID of the described WG found of verification is identical with the ID (WG1) of the described WG identified, and whether the ID of the described all protection channels that find of verification is identical with the ID of the described all protection channels that identify (P1 and P2), if above-mentioned two check results are all identical, verification is passed through.

Wherein, as follows to the APS extension of message:

Mode 3: in the mapping relations between described protection channel and service aisle, protection channel equates with the quantity of service aisle and corresponding relation is fixed, and the corresponding relation of protection channel group and service aisle group is fixed; First node equipment 1 selects a protection channel to send APS message from described protection channel group, carries the sign of described service aisle group and the sign of described protection channel group in this APS message;

Receive this APS message on the protection channel that Section Point equipment 2 is selected at first node equipment 1, identify the service aisle group sign of carrying in this APS message and the sign of protection channel group, according to the mapping relations between service aisle group and protection channel group, search the sign of service aisle group corresponding to the sign of protection channel group at the protection channel place that first node equipment selects and protection channel group that this finds, whether the sign of the described service aisle group found of verification is identical with the sign of the described service aisle group identified, and whether the sign of the described protection channel group found of verification is identical with the sign of the described protection channel group identified, if above-mentioned two check results are all identical, verification is passed through.

Specifically refer to Figure 10, in the present invention of Figure 10 institute, sending module 12 sends the schematic diagram of switching request embodiment tri-.

As shown in figure 10, when the W1 in WG1 and W2 break down, the sending module of first node equipment 1 is selected a protection channel in PG1, inserts the ID (WG1) of WG and the ID (PG1) of PG in APS message.After Section Point equipment 2 receives APS message, identify the ID (WG1) of the WG carried in this APS message, and the ID of protection channel group (WG2).In this programme, the service aisle in WG1 and the mapping relations between the protection channel in PG1 are fixed.Therefore; Section Point equipment 2 is according to the service aisle group in the table 1 of its local storage and the mapping relations between the protection channel group; search the ID of the WG that the ID of PG at the protection channel P1 place that first node equipment 1 selects and PG that this finds are corresponding; whether the ID of the described WG found of verification is identical with the ID (WG1) of the described WG identified; and whether the ID of the described PG found of verification is identical with the ID (PG1) of the described PG identified; if above-mentioned two check results are all identical, verification is passed through.

Wherein, as follows to the APS extension of message:

After mapping relations between 2 pairs of service aisles of Section Point equipment and protection channel are carried out verification; determine whether each service aisle in the service aisle group and each protection channel in the protection channel group are carried out to bridge joint; bridge joint completes; to first node equipment 1, return to corresponding bridge joint acknowledge message; bridge joint does not complete, and to first node equipment 1, returns to new switching request.

Below will describe first node equipment 1 in detail when receiving bridge joint acknowledge message that Section Point equipment 2 returns or new switching request, the business that how to realize is switched.

Referring to Figure 11, Figure 11 is the composition schematic diagram that business provided by the invention is switched module 13 embodiment.The business that the present embodiment provides is switched module 13 and is specifically comprised: receiving element 130, business switch unit 131,

Receiving element 130, carry out the service aisle in the protection channel of protection channel group and service aisle group from Section Point equipment 2 for receiving the bridge joint acknowledge message of returning after bridge joint.

Business switch unit 131, for receive the bridge joint acknowledge message that Section Point equipment 2 returns at receiving element 130 after, be switched to the business transmitted on service aisle in the protection channel in the protection channel group found and transmitted.Optionally, first node equipment 1 also, after finishing service is switched, sends the local message that finishing service has been switched to Section Point equipment 2.

Alternatively, if Section Point equipment 2 does not complete bridge joint, can send new switching request to first node equipment 1, first node equipment 1 also needs to process this new switching request.

Referring to Figure 12, the composition schematic diagram that Figure 12 is first node equipment 1 embodiment bis-provided by the invention.As shown in figure 12, the first node equipment 1 provided in embodiment bis-, except comprising above-mentioned memory module 10, search module 11, sending module 12, business switch module 13, grouping module 14, detecting fault module 15, also comprise: receiver module 16, bridge module 17.

Receiver module 16; for receiving the switching request from Section Point equipment 2, carry service aisle in its indication information that service aisle and protection channel is not carried out to bridge joint and new service aisle group and the mapping relations between the protection channel in the protection channel group in this switching request.

Bridge module 17, its for the switching request receiving from Section Point equipment 2 after, the mapping relations of service aisle and protection channel are carried out to verification; Being verified as while being, the protection channel in the service aisle of service aisle group and protection channel group is carried out to bridge joint.

When the receiver module 14 of first node equipment 1 receives new switching request, the concrete operations of its bridge module 15 are identical with the operation that Section Point equipment 2 receives switching request, therefore following concrete function and the structure that will describe Section Point equipment 2 in detail.

Referring to Figure 13, the composition schematic diagram that Figure 13 is Section Point equipment 2 embodiment mono-provided by the invention.Section Point equipment 2 in the present embodiment comprises: memory module 20, receiver module 21, bridge module 22.

Memory module 20, for storing service aisle group between first node equipment 1 and Section Point equipment 2 and the mapping relations between the protection channel group; Alternatively, described memory module 20 also stores the use state of each protection channel in described protection channel group.

Receiver module 21; for receiving the switching request sent by protection channel from first node equipment 1; wherein, carry the sign of described service aisle group in this switching request, and the sign of the sign of the sign of service aisle, protection channel group, protection channel is wherein a kind of.

Concrete, first node equipment 1 is by above-mentioned APS message, by three kinds of modes, sends switching request, correspondingly, the mode that the receiver module 21 of Section Point equipment 2 receives switching request has two kinds, as follows respectively:

For receive APS message on each protection channel of protection channel group; Or

For receiving APS message on the protection channel of selecting according to the order of sequence at first node equipment 1.

Section Point equipment 2 also comprises bridge module 22; for after described receiver module 21 receives the switching request from first node equipment 1; mapping relations to service aisle and protection channel are carried out verification; after verification is passed through; the service aisle of the protection channel in described protection channel group and described service aisle group is carried out to bridge joint, and return to the bridge joint confirmation to described first node equipment.

Alternatively, Section Point equipment 2 also comprises:

Grouping module 23, be divided into a service aisle group for the service aisle that will carry same business, maybe will be divided into by the service aisle in same services layer path a service aisle group, and put at least one protection channel group for each service aisle assembly.

Sending module 24; carry out verification for the mapping relations between 22 pairs of service aisles of described bridge module and protection channel; and when verification is not passed through; send switching request by the protection channel in the protection channel group to described Section Point equipment 2, carry service aisle in its indication information that service aisle and protection channel is not carried out to bridge joint and new service aisle group and the mapping relations between the protection channel in the protection channel group in this switching request.

Referring to Figure 14, the composition schematic diagram of memory module 20 embodiment that Figure 14 is Section Point equipment 2 provided by the invention.

In the present embodiment, the memory module 20 of Section Point equipment 2 is identical with the memory module 10 in first node equipment 1, also comprises: reserved resource maintenance unit 200 and state-maintenance unit 201.

Reserved resource maintenance unit 200, for storing the mapping relations between service aisle group and protection channel group.

State-maintenance unit 201, for the use state of storage protection passage group protection channel.

The concrete function of the memory module 20 of Section Point equipment 2 and effect are identical with the memory module 10 in first node equipment 1, do not repeat them here.

Referring to Figure 15, the composition schematic diagram of bridge module 22 embodiment that Figure 15 is Section Point equipment 2 provided by the invention.The bridge module 22 that the present embodiment provides specifically comprises: verification unit 220 and bridge-jointing unit 221.

Verification unit 220, after at receiver module 21, receiving switching request, for the switching request received according to described receiver module, carry out verification to the mapping relations of service aisle and protection channel.

Bridge-jointing unit 221, for when verification unit 220 verifications are passed through, carry out bridge joint by the protection channel in the service aisle of service aisle group and protection channel group, to first node equipment 1, returns to the bridge joint acknowledge message.

Mapping relations between 220 pairs of service aisles of verification unit and protection channel are carried out verification three kinds of modes, as follows:

1) identify the sign of the service aisle group of carrying in the APS message that described receiver module 21 receives on each protection channel and the sign of service aisle, according to the mapping relations between the service aisle group of storing in described memory module and protection channel group, search service aisle group corresponding to the protection channel that receives described APS message and the sign of service aisle, whether the sign of the described service aisle group that verification finds is identical with the sign of the described service aisle group identified, and whether the sign of the described service aisle that verification finds is identical with the sign of the described service aisle identified, if above-mentioned two check results are all identical, verification is passed through.

The embodiment that the visible Fig. 8 of specific implementation process is corresponding, do not repeat them here;

The sign of the service aisle group of carrying in the APS message sent on the protection channel that 2) identification receiver module 22 is selected at first node equipment 1 and the sign of all protection channels, according to the mapping relations between service aisle group and protection channel group, search the sign of service aisle group corresponding to the protection channel group at the protection channel place that another node device selects and the sign of all protection channels that the described protection channel group found comprises, whether the sign of the described service aisle group found of verification is identical with the sign of the described service aisle group identified, and whether the sign of the described all protection channels that find of verification is identical with the described all protection channels that identify, if above-mentioned two check results are all identical, verification is passed through.

The embodiment that the visible Fig. 9 of specific implementation process is corresponding, do not repeat them here;

3) identify the service aisle group sign of carrying in the APS message sent on the protection channel that described receiver module 22 selects at first node equipment 1 and the sign of protection channel group, according to the mapping relations between service aisle group and protection channel group, search the sign of service aisle group corresponding to the sign of protection channel group at the protection channel place that another node device selects and protection channel group that this finds, whether the sign of the described service aisle group found of verification is identical with the sign of the described service aisle group identified, and whether the sign of the described protection channel group found of verification is identical with the sign of the described protection channel group identified, if above-mentioned two check results are all identical, verification is passed through.

The Section Point equipment that the embodiment of the present invention provides and service aisle and the protection channel between first node equipment are divided into groups; when the service aisle group breaks down and needs whole switching; can find fast the protection channel corresponding with it and carry out switching of business; can promote the efficiency that the passage group is switched; save the time of channel switching, quick-recovery is normal soon to make the business transmission.Passage group resist technology provided by the invention; be not limited to concrete network technology and resist technology; be applicable to SDH (Synchronous Digital Hierarchy; synchronous digital hierarchy), OTN (Optic Transmission Network; optical transport network), MPLS-TP (Multi-Protocol Label Switch_Transport Profile; multiprotocol label switching-transmission territory), the tranmission techniques field such as ETN (ETHERNET, Ethernet).

Above-described embodiment has been described passage group protection system provided by the invention and first node equipment wherein and the specific implementation of Section Point equipment, describes the embodiment of passage group provided by the invention guard method below with reference to Figure 16～Figure 20.

Referring to Figure 16, the schematic flow sheet that Figure 16 is passage group guard method embodiment mono-provided by the invention.The passage group of the present embodiment is between first node equipment and Section Point equipment, and described method comprises:

Step 100, when the first node equipment sensing breaks down to the service aisle in the service aisle group, according to the mapping relations between service aisle group and protection channel group, for this service aisle group is searched the protection channel group.

Step 101, the service aisle in the protection channel in the protection channel group that Section Point equipment finds first node equipment and described service aisle group carries out bridge joint.

Step 102, be switched to the protection channel of bridge joint by the business integral body transmitted on all working passage in this service aisle group and transmitted.

The method that the present embodiment provides can be implemented in the passage group protection system shown in Fig. 4.

Above-mentioned service aisle and protection channel refer to the passage that carries out the business transmission between two network nodes.Below illustrate 2 pairs of service aisles of first node equipment 1 and Section Point equipment and protection channel and divided into groups respectively, and on first node equipment 1 and Section Point equipment 2 flow process of the mapping relations between preset service aisle group and protection channel group.

Referring to Figure 17, the schematic flow sheet that Figure 17 is the embodiment of the method for in passage group provided by the invention guard method, service aisle and protection channel being divided into groups.The method that the present embodiment provides comprises:

Step 200, be divided into the service aisle of the same business of carrying between node device a service aisle group or the service aisle by same services layer path between node device be divided into to a service aisle group.

Step 201, at least one protection channel group is put in each service aisle assembly; Wherein, the quantity of the protection channel in described protection channel group is more than or equal to the quantity of the service aisle in the service aisle group of its protection.

Particularly service aisle and protection channel are divided into groups as shown in Figure 4, and, after grouping completes, need on first node equipment 1 and Section Point equipment 2, be safeguarded reserved resource table and protection channel group state table, specifically as shown in Table 1 and Table 2 simultaneously; This method embodiment can be realized by the first node equipment 1 as shown in Fig. 5～Fig. 6, not repeat them here.

Below just will introduce first node equipment 1 and how judge that the service aisle group needs integral body to switch because service aisle wherein breaks down, and for needing the whole service aisle group that switch to search the implementation procedure of protection channel.

Particularly, during the service aisle group that is the same business of carrying for service aisle in the service aisle group, the arbitrary service aisle detected in this service aisle group breaks down, and confirming that this service aisle group breaks down needs integral body to switch; For the service aisle in the service aisle group, during for the service aisle group by same services layer path, the quantity of the service aisle broken down in this service aisle group surpasses a predetermined value, and confirming that this service aisle group breaks down needs integral body to switch.

The above-mentioned situation that judges whether the service aisle group need integral body to switch is specific as follows:

When 1) arbitrary service aisle breaks down in the service aisle group of the same business of carrying, adopt the G.808.1 algorithm of the arithmetic logic 1 of standard 11.1.2 chapters and sections definition to judge whether this service aisle group needs integral body to switch:

W-SFG＝W1-TSF?or?W2-TSF?or?W3-TSF

P-SFG＝P1-TSF?or?P2-TSF?or?P3-TSF。

Wherein, SFG means service aisle group Signal Fail (Signal Fail Group); TSF means path signal inefficacy (Trail Signal Fail);

The meaning of above-mentioned expression formula is, in the service aisles such as W1 or W2 or W3, any one path signal lost efficacy and (was designated as: W1-TSF or W2-TSF or W3-TSF), cause whole service aisle group Signal Fail (to be designated as: W-SFG), need integral body to switch.In like manner, any one path signal inefficacy in the protection channels such as P1 or P2 or P3 (is designated as: P1-TSF or P2-TSF or P3-TSF), cause whole protection channel group path signal to lose efficacy and (be designated as: P-SFG), need integral body to switch.

When the quantity of the service aisle 2) broken down in the service aisle group by same services layer path surpasses a predetermined value, adopt the G.808.1 algorithm of the arithmetic logic 3 of standard 11.1.2 chapters and sections definition to judge whether this working group needs integral body to switch:

W-SFG＝X％?of?the?Wi-TSF

P-SFG＝X％?of?the?Pi-TSF

Wherein, X% of the Wi-TSF refers to that the service aisle that the TSF indication occurs accounts for the percentage of all working number of channels in whole service aisle group; if the value of X% reaches predetermined value; for example 60%; judge this service aisle group path signal inefficacy (being designated as W-SFG); in like manner; X% ofthe Pi-TSF refers to that the protection channel that the TSF indication occurs accounts for the percentage of all protection channel quantity in whole protection channel group; if the value of X% reaches predetermined value, judge this protection channel group path signal inefficacy (being designated as P-SFG).

Be more than take service aisle (protection channel) occur path signal lost efficacy (TSF) how to judge that for example explanation service aisle group (protection channel group) needs integral body to switch; with meaning that Trail Signal Degrade (Trail Signal Degrade appears in service aisle or protection channel road; TSD) index signal, can judge according to identical principle whether whole service aisle group or protection channel group need integral body to switch.

In the time of below describing service aisle in the service aisle group and break down, for this service aisle group is searched the method flow of protection channel group.

Referring to Figure 18, Figure 18 searches the schematic flow sheet of the embodiment of the method for protection channel group in passage group provided by the invention guard method.The method that the present embodiment provides comprises:

Step 300 is searched idle protection channel group in the service aisle group, being at least one protection channel groups of mapping relations.

Step 301, when there is no idle protection channel group, the protection channel group of the service aisle group that the protection channel group of selection low service aisle group than the described service aisle group priority that needs integral body switch is switched as needs integral body.

It should be noted that; when there is no idle protection channel group; can select the protection channel group of the service aisle group that the protection channel group of the service aisle group of lowest priority switches as needs integral body, also can select the protection channel group of the service aisle group that the protection channel group of the service aisle group that the priority of other service aisle groups of switching than needs integral body is low switches as needs integral body.Associative list 1 and table 2 illustrate, known in table 1, PG1 is due to the protection channel group of while as WG1 and WG2, therefore, when it is taken by WG1, its idle condition is designated N, seizure condition is designated Y, if at this time WG2 has also occurred that integral body switches demand, can carry out the protection channel group according to priority seizes, the priority of the service aisle in WG3 is less than the priority of service aisle in WG2, therefore, WG2 can seize the PG2 in idle condition this moment, protection channel using PG2 as WG2, in order to further the business transmitted on the service aisle of WG2 is switched on the protection channel group PG2 that belongs to WG3 and is transmitted.

Once, after determining the protection channel group of selecting, the first node equipment 1 of service aisle group one end that need to whole switch is the Section Point equipment 2 transmission switching request to the other end by the protection channel in the protection channel group found; Carry the sign of described service aisle group in this switching request, or further carry sign or the sign of protection channel group or the sign of protection channel of service aisle.

Expanded the switching request transmission on APS (Automatic Protection Switching, APS) message mechanism to the existing standard definition in the present embodiment.

First node equipment 1 transmission APS message and Section Point equipment 2 carry out verification according to this APS to the mapping relations between service aisle and protection channel and specifically comprises following three kinds of modes: mode 1: first node equipment 1 sends APS message on each protection channel of protection channel group, described APS message carries the sign of described service aisle group, and the sign that sends service aisle corresponding to the protection channel of this APS message;

Section Point equipment 2 receives respectively described APS message on each protection channel, identify the sign of the service aisle group of carrying in described APS message and the sign of service aisle, according to the mapping relations between service aisle group and protection channel group, search service aisle group corresponding to the protection channel that receives described APS message and the sign of service aisle, whether the sign of the described service aisle group that verification finds is identical with the sign of the described service aisle group identified, and whether the sign of the described service aisle that verification finds is identical with the sign of the described service aisle identified, if above-mentioned two check results are all identical, verification is passed through.

Its specific implementation process as shown in Figure 8, does not repeat them here.

When verification is passed through, described Section Point equipment 2 carries out bridge joint by the protection channel in the service aisle of described service aisle group and protection channel group, return to the bridge joint acknowledge message to described first node equipment 1, described first node equipment 1 is switched to the business integral body transmitted on service aisle in the protection channel in the protection channel group found and is transmitted after receiving the bridge joint acknowledge message that described Section Point equipment 2 returns;

When verification is not passed through; described Section Point equipment 2 sends switching request by the protection channel in the protection channel group to described first node equipment 1, carries service aisle in its indication information that service aisle and protection channel is not carried out to bridge joint and new service aisle group and the mapping relations between the protection channel in the protection channel group in this switching request.

Mode 2: first node equipment 1 selects protection channel to send APS message from described protection channel group, carries the sign of all protection channels in the sign of described service aisle group and described protection channel group in this APS message;

Receive this APS message on the protection channel that described Section Point equipment 2 is selected at first node equipment 1, identify the sign of the service aisle group of carrying in this APS message and the sign of all protection channels, according to the mapping relations between service aisle group and protection channel group, search the sign of service aisle group corresponding to the protection channel group at the protection channel place that first node equipment 1 selects and the sign of all protection channels that the described protection channel group found comprises, whether the sign of the described service aisle group found of verification is identical with the sign of the described service aisle group identified, and whether the sign of the described all protection channels that find of verification is identical with the sign of the described all protection channels that identify, if above-mentioned two check results are all identical, verification is passed through.

Its specific implementation process as shown in Figure 9, does not repeat them here.

Receive this APS message on the protection channel that described Section Point equipment 2 is selected at first node equipment 1, identify the service aisle group sign of carrying in this APS message and the sign of protection channel group, according to the mapping relations between service aisle group and protection channel group, search the sign of service aisle group corresponding to the sign of protection channel group at the protection channel place that first node equipment 1 selects and protection channel group that this finds, whether the sign of the described service aisle group found of verification is identical with the sign of the described service aisle group identified, and whether the sign of the described protection channel group found of verification is identical with the sign of the described protection channel group identified, if above-mentioned two check results are all identical, verification is passed through.

Its specific implementation process as shown in figure 10, does not repeat them here.

Below will describe first node equipment 1 provided by the invention in detail when receiving bridge joint acknowledge message that Section Point equipment 2 returns or new switching request, carry out the flow process that business is switched.

Referring to Figure 19, Figure 19 is the schematic flow sheet that in passage group provided by the invention guard method, first node equipment 1 carries out business reverse method flow implementation example.The method that the present embodiment provides comprises:

Step 400, first node equipment 1 is received the bridge joint acknowledge message that Section Point equipment 2 returns.

Step 401, first node equipment 1 is switched to the business integral body transmitted on service aisle in the protection channel in the protection channel group of bridge joint and is transmitted.

Optionally, the method also comprises:

Step 402, first node equipment 1, after finishing service is switched, sends the local message that finishing service has been switched to Section Point equipment 2.

Do not complete the bridge joint to protection channel and service aisle if below will describe Section Point equipment 2, to first node equipment 1, send new switching request, first node equipment 1 also needs to process this new switching request.

Referring to Figure 20, Figure 20 is the schematic flow sheet that in passage group provided by the invention guard method, first node equipment 1 carries out passage bridging method embodiment.

The method of the present embodiment comprises:

Step 500, first node equipment 1 is received the switching request that Section Point equipment 2 returns.

Step 501, the mapping relations between 1 pair of service aisle of first node equipment and protection channel are carried out verification; The process that mapping relations between 1 pair of service aisle of first node equipment and protection channel are carried out verification is consistent with Section Point equipment 2, does not repeat them here.

Step 502, be verified as while being, first node equipment 1 carries out bridge joint by the protection channel in the service aisle of service aisle group and protection channel group, to Section Point equipment 2, returns to the bridge joint acknowledge message.

The guard method of embodiment passage group provided by the invention, because service aisle and protection channel by between Section Point equipment 2 and first node equipment 1 are divided into groups; when the service aisle group breaks down and needs whole switching; can find fast the protection channel corresponding with it and carry out switching of business; can promote the efficiency that the passage group is switched; save the time of channel switching, quick-recovery is normal soon to make the business transmission.Be applicable to SDH (Synchronous Digital Hierarchy, synchronous digital hierarchy), OTN (Optic Transmission Network, optical transport network), MPLS-TP (Multi-Protocol Label Switch _ Transport Profile, multiprotocol label switching-transmission territory), the tranmission techniques field such as ETN (ETHERNET, Ethernet).

One of ordinary skill in the art will appreciate that all or part of flow process realized in above-described embodiment method, to come the hardware that instruction is relevant to complete by computer program, described program can be stored in a computer read/write memory medium, this program, when carrying out, can comprise the flow process as the embodiment of above-mentioned each side method.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-Only Memory, ROM) or random store-memory body (Random Access Memory, RAM) etc.

The above is preferred Implementation Modes of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also are considered as protection scope of the present invention.

Claims

1. passage group guard method, described passage group between first node equipment and Section Point equipment, is characterized in that, comprising:

When the first node equipment sensing breaks down to the service aisle in the service aisle group, according to the mapping relations between service aisle group and protection channel group, for described service aisle group is searched the protection channel group, wherein, described service aisle group comprises at least two service aisles, and the quantity of the protection channel in described protection channel group is more than or equal to the quantity of the service aisle in described service aisle group;

The protection channel that first node equipment passes through in found protection channel group sends switching request to Section Point equipment, and receives the bridge joint confirmation of Section Point device responds;

After receiving described bridge joint confirmation, first node equipment is switched to the protection channel of bridge joint by the business integral body transmitted on all working passage in this service aisle group and is transmitted.

2. passage group as claimed in claim 1 guard method, is characterized in that, also comprises: the service aisle that will carry same business is divided into a service aisle group; For at least one protection channel group is put in each service aisle assembly; The described service aisle detected in the service aisle group breaks down and comprises: the arbitrary service aisle detected in the service aisle group breaks down.

3. passage group as claimed in claim 1 guard method, is characterized in that, also comprises: will be divided into by the service aisle in same services layer path a service aisle group; For at least one protection channel group is put in each service aisle assembly;

The described service aisle detected in the service aisle group breaks down and comprises: the quantity of the service aisle broken down in described service aisle group surpasses a predetermined value.

4. passage group guard method as claimed any one in claims 1 to 3, is characterized in that, the protection channel that first node equipment passes through in found protection channel group specifically comprises to Section Point equipment transmission switching request:

First node equipment sends switching request by the protection channel in the protection channel group found to Section Point equipment, wherein, carry the sign of described service aisle group in this switching request, and the sign of the sign of the sign of service aisle, protection channel group, protection channel is wherein a kind of;

The guard method of described passage group also comprises: Section Point equipment carries out verification according to the described switching request received to the mapping relations of service aisle and protection channel; after verification is passed through, the service aisle of the protection channel in described protection channel group and described service aisle group is carried out to bridge joint.

5. passage group as claimed in claim 4 guard method, is characterized in that, described switching request is APS APS message; First node equipment sends the step that described APS message and Section Point equipment carries out verification and comprises:

Described first node equipment sends APS message on each protection channel of protection channel group, and described APS message carries the sign of described service aisle group, and the sign that sends service aisle corresponding to the protection channel of this APS message;

Described Section Point equipment receives respectively described APS message on each protection channel, identify the sign of the service aisle group of carrying in described APS message and the sign of service aisle, according to the mapping relations between service aisle group and protection channel group, search service aisle group corresponding to the protection channel that receives described APS message and the sign of service aisle, whether the sign of the described service aisle group that verification finds is identical with the sign of the described service aisle group identified, and whether the sign of the described service aisle that verification finds is identical with the sign of the described service aisle identified, if above-mentioned two check results are all identical, verification is passed through.

6. passage group as claimed in claim 4 guard method, is characterized in that, described switching request is APS APS message; First node equipment sends the step that described APS message and Section Point equipment carries out verification and comprises:

First node equipment selects a protection channel to send described APS message from described protection channel group, carries the sign of all protection channels in the sign of described service aisle group and described protection channel group in this APS message;

Receive this APS message on the protection channel that described Section Point equipment is selected at first node equipment, identify the sign of the service aisle group of carrying in this APS message and the sign of all protection channels, according to the mapping relations between service aisle group and protection channel group, search the sign of service aisle group corresponding to the protection channel group at the protection channel place that first node equipment selects and the sign of all protection channels that the described protection channel group found comprises, whether the sign of the described service aisle group found of verification is identical with the sign of the described service aisle group identified, and whether the sign of the described all protection channels that find of verification is identical with the sign of the described all protection channels that identify, if above-mentioned two check results are all identical, verification is passed through.

7. passage group as claimed in claim 4 guard method, it is characterized in that, in mapping relations between described protection channel and service aisle, protection channel equates with the quantity of service aisle and corresponding relation is fixed, and the corresponding relation of protection channel group and service aisle group is fixed; Described switching request is APS APS message; First node equipment sends the step that described APS message and Section Point equipment carries out verification and comprises:

First node equipment selects a protection channel to send this APS message from described protection channel group, carries the sign of described service aisle group and the sign of described protection channel group in this APS message;

Receive this APS message on the protection channel that described Section Point equipment is selected at first node equipment, identify the service aisle group sign of carrying in this APS message and the sign of protection channel group, according to the mapping relations between service aisle group and protection channel group, search the sign of service aisle group corresponding to the sign of protection channel group at the protection channel place that first node equipment selects and protection channel group that this finds, whether the sign of the described service aisle group found of verification is identical with the sign of the described service aisle group identified, and whether the sign of the described protection channel group found of verification is identical with the sign of the described protection channel group identified, if above-mentioned two check results are all identical, verification is passed through.

8. a node device, is characterized in that, comprising:

Memory module, for storing service aisle group between described node device and another node device and the mapping relations between the protection channel group, wherein, described service aisle group comprises at least two service aisles, and the quantity of the protection channel in described protection channel group is more than or equal to the quantity of the service aisle in described service aisle group;

Sending module, for by described search module searches to the protection channel of protection channel group send switching request to another node device;

Business is switched module; according to described switching request, the service aisle in the protection channel of protection channel group and service aisle group is carried out after bridge joint completes to the bridge joint confirmation of sending for receiving described another node device, and respond described bridge joint confirmation and the business integral body transmitted on all working passage in this service aisle group is switched to the protection channel of bridge joint is transmitted.

9. node device as claimed in claim 8, is characterized in that, described node device also comprises:

Grouping module, be divided into a service aisle group for the service aisle that will carry same business, and put at least one protection channel group for each service aisle assembly;

Whether the detecting fault module is, while carrying the service aisle of same business, to detect arbitrary service aisle in described service aisle group and break down for the service aisle in described service aisle group.

10. node device as claimed in claim 8, is characterized in that, described node device also comprises:

Grouping module, for being divided into by the service aisle in same services layer path a service aisle group, and put at least one protection channel group for each service aisle assembly;

The detecting fault module, be while passing through the service aisle in same services layer path for the service aisle in described service aisle group, and whether the quantity of detecting the service aisle broken down in described service aisle group surpasses a predetermined value.

11. node device as described as any one in claim 8 to 10, it is characterized in that, described switching request is APS APS message, described sending module for sending APS message on each protection channel of protection channel group, described APS message carries the sign of described service aisle group, and the sign that sends service aisle corresponding to the protection channel of this APS message; Or

For from described protection channel group, selecting a protection channel to send described APS message, carry the sign of all protection channels in the sign of described service aisle group and described protection channel group in this APS message; Or

For from described protection channel group, selecting a protection channel to send this APS message, carry the sign of described service aisle group and the sign of described protection channel group in this APS message.

12. a node device, is characterized in that, comprising:

13. node device as claimed in claim 12, is characterized in that, described node device also comprises:

Grouping module, be divided into a service aisle group for the service aisle that will carry same business, and put at least one protection channel group for each service aisle assembly.

14. node device as claimed in claim 12, is characterized in that, described node device also comprises:

Grouping module, for being divided into by the service aisle in same services layer path a service aisle group, and put at least one protection channel group for each service aisle assembly.

15. node device as described as any one in claim 12 to 14, is characterized in that, described bridge module comprises:

Verification unit, for the switching request received according to described receiver module, carry out verification to the mapping relations of service aisle and protection channel;

Bridge-jointing unit, after passing through in described verification unit verification, carry out bridge joint by the service aisle of the protection channel in described protection channel group and described service aisle group.

16. node device as claimed in claim 15, is characterized in that, described switching request is APS APS message;

Described receiver module for receiving respectively described APS message on each protection channel, and described APS message carries the sign of described service aisle group, and the sign that sends service aisle corresponding to the protection channel of this APS message;

The verification unit of described bridge module is for the sign of identifying the service aisle group that described APS message carries and the sign of service aisle, according to the mapping relations between the service aisle group of storing in described memory module and protection channel group, search service aisle group corresponding to the protection channel that receives described APS message and the sign of service aisle, whether the sign of the described service aisle group that verification finds is identical with the sign of the described service aisle group identified, and whether the sign of the described service aisle that verification finds is identical with the sign of the described service aisle identified, if above-mentioned two check results are all identical, verification is passed through.

17. node device as claimed in claim 15, is characterized in that, described switching request is APS APS message;

Described receiver module is for receiving described APS message on the protection channel of selecting at described another node device; Carry the sign of all protection channels in the sign of described service aisle group and described protection channel group in this APS message;

The verification unit of described bridge module is for the sign of identifying the service aisle group that this APS message carries and the sign of all protection channels, according to the mapping relations between service aisle group and protection channel group, search the sign of service aisle group corresponding to the protection channel group at the protection channel place that another node device selects and the sign of all protection channels that the described protection channel group found comprises, whether the sign of the described service aisle group found of verification is identical with the sign of the described service aisle group identified, and whether the sign of the described all protection channels that find of verification is identical with the described all protection channels that identify, if above-mentioned two check results are all identical, verification is passed through.

18. node device as claimed in claim 15, is characterized in that, described switching request is APS APS message;

Described receiver module is for receiving described APS message on the protection channel of selecting at another node device;

The verification unit in described bridge module is for identifying service aisle group sign that this APS message carries and the sign of protection channel group, according to the mapping relations between service aisle group and protection channel group, search the sign of service aisle group corresponding to the sign of protection channel group at the protection channel place that another node device selects and protection channel group that this finds, whether the sign of the described service aisle group found of verification is identical with the sign of the described service aisle group identified, and whether the sign of the described protection channel group found of verification is identical with the sign of the described protection channel group identified, if above-mentioned two check results are all identical, verification is passed through.

19. a passage group protection system, is characterized in that, comprising: comprise first node equipment and Section Point equipment;

Described first node equipment and Section Point equipment are for storing service aisle group between described first node equipment and Section Point equipment and the mapping relations between the protection channel group, wherein, described service aisle group comprises at least two service aisles, and the quantity of the protection channel in described protection channel group is more than or equal to the quantity of the service aisle in described service aisle group;

20. system as claimed in claim 19, is characterized in that, described first node equipment comprises:

Memory module, for storing service aisle group between described node device and Section Point equipment and the mapping relations between the protection channel group;

Sending module, for by described search module searches to the protection channel of protection channel group send switching request to Section Point equipment, wherein, carry the sign of described service aisle group in this switching request, and the sign of the sign of the sign of service aisle, protection channel group, protection channel is wherein a kind of;

Business is switched module; service aisle in the protection channel of protection channel group and service aisle group is carried out after bridge joint completes to the bridge joint confirmation of sending for receiving described Section Point equipment, and respond described bridge joint confirmation and the business integral body transmitted on all working passage in this service aisle group is switched to the protection channel of bridge joint is transmitted.

21. system as described as claim 19 or 20, is characterized in that, described Section Point equipment comprises:

Memory module, for storing service aisle group between described node device and first node equipment and the mapping relations between the protection channel group;

Receiver module, for receiving the switching request sent by protection channel from first node equipment; Wherein, carry the sign of described service aisle group in this switching request, and the sign of the sign of the sign of service aisle, protection channel group, protection channel is wherein a kind of;

Bridge module; for the mapping relations of service aisle and protection channel are carried out to verification; after verification is passed through, the service aisle of the protection channel in described protection channel group and described service aisle group is carried out to bridge joint, and return to the bridge joint confirmation to described first node equipment.