CN100502398C - Method and system for implementing multiplex fragment neighbor discovering by regeneration fragment trace byte - Google Patents
Method and system for implementing multiplex fragment neighbor discovering by regeneration fragment trace byte Download PDFInfo
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- CN100502398C CN100502398C CNB2005100682957A CN200510068295A CN100502398C CN 100502398 C CN100502398 C CN 100502398C CN B2005100682957 A CNB2005100682957 A CN B2005100682957A CN 200510068295 A CN200510068295 A CN 200510068295A CN 100502398 C CN100502398 C CN 100502398C
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Abstract
The invention discloses a method and system for finding multiplex section neighbors by regenerator section trace byte, and the method comprises: 1) source node and destination node determine to start neighbor finding course by signaling; 2) the source node writes the information about neighbor finding identification, finding course type and multiplex section resource identification into regenerator section trace byte, and send the information through transfer plane link to the destination node, and the destination node extracts the resource information from the regenerator section trace byte and finds the resources; 3) the destination node sends finding success signaling to the source node, and the source node confirms to end the finding course. And the system comprises regenerator section trace byte processor, which comprises time gap/space cross-linking device, finding proxy, protocol controller, management proxy, overhead processor, overhead reading circuit and overhead writing circuit. And it can find multiplex sections by regenerator section trace byte (J0) and raise finding efficiency.
Description
Technical field
The present invention relates to the method and system that a kind of multiplex section neighbours find, relate in particular to a kind of Regeneration Section Trace Message (J0) that utilizes and realize the method and system that the multiplex section neighbours find.
Background technology
Current network is the network of an information blast, surge along with the data, services amount, transmission guipure in the reality has also been given in this development when bringing huge effect heavy pressure, this pressure transmits network for tradition and has proposed the clear and definite innovation and the requirement of development.Actual demand forces legacy network can support multichannel, high power capacity, configurable, intelligent network evolution to the next generation.In this evolution process, the wdm system of point-to-point has stepped the first step of dealing with problems.After having possessed WDM (Wavelength Division Multiplex, wavelength division multiplexing) ability, optical transport network has had for the first time at photosphere and has directly intersected the ability of networking.And the development of modern optical networks technology is at a tremendous pace, various new technologies are come thick and fast, these new technologies make in design and realize possessing unprecedented ability and space in the brand-new transmission network, under the dual promotion of network current demand and emerging technology, ASON, the appearance that is to say ASON (Automatic Switched Optical Network) network just becomes trend of the times, and is natural.Why the ASON network is called ASON, and it is intelligent just to be that itself possesses, and this intelligent ASON of being embodied in network has realized that optical channel is set up for the first time in optical-fiber network intelligent.That is to say the ASON network under the effect that does not need behavior adjustment management and control, can set up an optical channel that meets user's request by user's request according to the function of chain of command.This unprecedented revolutionary advancement is that optical-fiber network has brought qualitative leap.ASON is to finish automatic exchange and the optical transfer network that is connected control with control plane, it is to be the physical transfer medium with optical fiber, with SDH (SynchronousDigital Hierarchy, synchronous digital hierarchy) and OTN optical transmission systems such as (Optical Transmission Network, optical transfer networks) constitute have an intelligent optical transfer network.The ASON server is a network intelligence, comprises that signaling, route and automatic discovery etc. are to realize the intelligent network controlled function.
Abide by International Telecommunications Union (ITU-T) standard G.8080, the ASON structure can be divided into three planes according to function: transmit plane, control plane and management plane.Different functions is finished on three planes respectively.With traditional network class seemingly, transport layer still is responsible for professional transmission, but the action of transport layer at this moment is to carry out under the effect of chain of command and chain of command.Chain of command and chain of command can both be operated the resource of transport layer.These operational motions are to finish by the interface between transmission plane and chain of command and the chain of command.Simultaneously chain of command is that effect as corporate executive occurs in structure, in chain of command, exist three managers, be respectively chain of command manager, transmission plane manager and explorer, these three managers are to realize that chain of command is with the agency who realizes management function between other plane.In addition, between chain of command and other aspect, also exist different interfaces,, can realize coordination, can realize management activities the transmission plane resource with function between the chain of command by these interfaces.Also comprise the data communication network that is used to control with supervisory communications in addition.The control plane of ASON is made of one group of control assembly that specific functions such as route and signaling are provided, and is supported by a signaling network.The major function of control plane comprises: set up, remove and safeguard the end-to-end ability that is connected by the signaling support, select suitable route by route for connecting; Automatically find syntople and link information, the issue Link State; During network failure, execute protection and restore funcitons.Transmitting the plane provides the two-way or unidirectional information from an end points to another end points to transmit, its can finish optical signal transmission, multiplexing, configuration protection is switched and function such as interconnection, and guarantees the reliability of the light signal that passes.Management plane is implemented transmitting the management function of plane, control plane and system.Data communication network (DCN, Digital Communication Network) provide drive access for the intercommunication mutually between management plane, control plane and the transmission plane.
G.7714.x, the ITU-T standard has illustrated the operating process that neighbours find: at source node, control plane will find that by itself and the interface (CCI interface) that transmits the plane instruction sends to the transmission plane.Transmission plane signaling is carried and is found that message (for example port numbers, device address etc.) sends to neighbor node through transmission link; Neighbor node is received and is found to be reported to control plane after the message.Neighbor node returns acknowledge message to source node after realizing resource discovering.The discovery procedure that the LMP agreement of the IETF of another International Standards Organization realizes is slightly different with it, initiates node and destination node at first in control plane foundation contact, and then sends discovery message by transmitting the plane.The two about transmit the plane send find message and behind resource discovering neighbor node to return acknowledge message be consistent to this basic process of source node.
And Regeneration Section Trace Message (J0) is used for SDH signal traces when indication, is generally handled by the regenerator section node.G.707, the ITU-T standard has illustrated the basic structure and the related application demand of J0 byte.
The ITU-T standard G.7714.1 in, illustrated the J0 byte and can be used for realizing the regenerator section resource discovering, relate to initiate form and implication, realization signaling that node writes J0 send and receive, in processes such as destination node and control plane realization are mutual.When the J0 byte is used for finding automatically, should use ASCII character "+" to indicate in J0 the 2nd byte; Use the 3rd to 16 byte to carry and find message (based on G.7714 the 7th saving).Neighbor discovery process is an of short duration process, and when realizing neighbours' discovery feature, above-mentioned byte is used, and discovery procedure recovers original relay function (G.7714.1) after finishing.
Clearly, prior art does not support to use the J0 byte to realize multiplex section neighbours discovery feature.Terminate in the regenerator section node because the transmission of J0 byte in system rises, the regenerator section node can make the J0 byte be used for the purpose failure of multiplex section discovery feature to the processing of J0 byte.This has directly caused prior art to find the low of efficient.
Summary of the invention
Find existing problem and shortage at above-mentioned existing multiplex section neighbours, the purpose of this invention is to provide a kind of method and system that utilizes Regeneration Section Trace Message realization multiplex section neighbours to find simple, that efficient is higher of realizing.
The present invention is achieved in that a kind of method of utilizing Regeneration Section Trace Message to realize multiplex section neighbours discovery, may further comprise the steps:
1) opens the beginning signaling by discovery between multiplex section source node and the destination node and confirm that neighbor discovery process begins;
2) source node to Regeneration Section Trace Message write that neighbours find to indicate, the information of discovery procedure type and multiplex section resource label, be sent to destination node through transmitting the plane link, this destination node is extracted the resource information in the Regeneration Section Trace Message, realizes resource discovering;
3) destination node sends and finds successful signaling to source node, and source node is removed the discovery sign in the Regeneration Section Trace Message and sent acknowledge message, and discovery procedure finishes.
Preferably, this method also comprises:
If between source node and the destination node via node is arranged, then this via node is when receiving Regeneration Section Trace Message, at first determine whether it is neighbor discovery messages, whether the network management configuration function of then judging this Regeneration Section Trace Message if not shields, if shielding, then handle by traditional trace byte processing mode after the screen unlocking, if shielding is not then directly handled by traditional trace byte processing mode; If neighbor discovery messages then in discovery procedure to the Regeneration Section Trace Message transparent transmission.
Preferably, described via node is specially the Regeneration Section Trace Message transparent transmission: the discovery type in the identification Regeneration Section Trace Message, if be in the multiplex section discovery procedure, then transparent being sent to failed it, shields Regeneration Section Trace Message network management configuration function simultaneously; If be in the regenerator section discovery procedure, then the content of Regeneration Section Trace Message is sent to the control plane of this via node, and the network management configuration function of open Regeneration Section Trace Message.
Preferably, the structure of described Regeneration Section Trace Message is:
Back 7 bits of the 2nd byte are as the sign of neighbor discovery process; In the 3rd byte to the 16 bytes one or more bits as a token of the position, write the discovery procedure type; Bit except that being used as the discovery procedure type in the 2nd to the 8th bit in the 3rd byte to the 16 bytes is used for carrying discovery message; Remaining bit is as common sparing.
Preferably, described discovery procedure type comprises that the multiplex section neighbours find and the regenerator section neighbours find.
Preferably, the discovery sign in the described removing Regeneration Section Trace Message be meant after find finishing neighbours are found indicate, the information of discovery procedure type and multiplex section resource label removes.
A kind of Regeneration Section Trace Message that utilizes is realized the system that the multiplex section neighbours find, include the Regeneration Section Trace Message processor, this processor comprises time slot/space crossed jockey, find the agency, protocol controller, administration agent, overhead processor, expense reading circuit and expense write circuit, overhead processor is connected on time slot/space crossed jockey, and be connected by the expense reading circuit on each signal of overhead byte reading signal lines and time slot/space crossed jockey input, be connected by the expense write circuit on each signal of overhead byte write signal line and time slot/space crossed jockey output; Find that the agency is connected with protocol controller, and be connected on the overhead processor that administration agent is connected on the overhead processor by the management interface on it by the control interface on the protocol controller.
Preferably, this system also comprises the relaying Regeneration Section Trace Message processor that is connected between the Regeneration Section Trace Message processor, this processor includes regenerator, finds agency, protocol controller, administration agent, overhead processor, expense reading circuit and expense write circuit, transmission signals is output after regenerator is handled, be connected with expense reading circuit and expense write circuit on this output signal, it is connected with overhead processor with the write signal line by the read output signal line respectively; Find that the agency is connected with protocol controller, and be connected on the overhead processor that administration agent is connected on the overhead processor by the management interface on it by the control interface on the protocol controller.
Preferably, described overhead processor is made of cpu system or SDH signal processing chip, can read and write Regeneration Section Trace Message in the signal.
Preferably, described regenerator contains photoelectric conversion module, amplifier and filter, and it connects successively, can carry out opto-electronic conversion to signal, amplifies, when resetting and shaping.
The present invention has defined the J0 byte and has been used for the flag bit that multiplex section is found, the technical measures the J0 byte handled at via node and crossover node have been taked, obtained the progress of ability of discovery automatically in the ASON, reach use Regeneration Section Trace Message (J0) and realized multiplex section discovery effect, improved the efficient of finding.
Description of drawings
Below in conjunction with accompanying drawing the present invention is illustrated in further detail:
Fig. 1 is the structural representation of crossover node J0 byte processor of the present invention;
Fig. 2 is the structural representation of via node J0 byte processor of the present invention;
Fig. 3 is a structural representation of the present invention;
Fig. 4 is the process chart of via node of the present invention to J0.
The figure number explanation:
11,12 ..., 1N: overhead byte reads circuit; 21,22 ..., 2N: overhead byte write circuit;
G: regenerative repeating; X: switch; C1: via node overhead processor;
C: switching node processor; CTR: exchange control signal wire;
R, R1, R2 ..., RN:J0 read output signal line;
W, W1, W2 ..., WN:J0 write signal line;
CCI: transmit plane node processor and control plane interface;
TMI: transmit plane node processor and management plane interface; MA: management system agent server;
PC: protocol processor; DA: find acting server; DCN: data communication network;
Common sparing in the #:J0 byte; ##: discovery procedure type indication; ###: find message;
+: as the ASCII character of neighbor discovery process sign.
Embodiment
As shown in Figure 1, the present invention includes two adjacent crossover node J0 byte processors.This crossover node J0 byte processor comprises time slot/space crossed jockey (X), overhead processor (C), finds agency (DA), protocol controller (PC) and administration agent (MA), overhead processor (C) is connected with time slot/space crossed jockey, expense reading circuit on each signal of the overhead byte reading signal lines of overhead processor (C) (R1, R2...RN) and time slot/space crossed jockey (X) input (11,1...1N) is connected, and reads with the overhead byte that carries out J0; Expense write circuit on each signal of the overhead byte write signal line (W1, W2...WN) of overhead processor (C) and time slot/space crossed jockey (X) output (21,22...2N) is connected, and writes with the overhead byte that carries out output channel.Find that agency (DA) is connected with protocol controller (PC), overhead processor (C) is mutual with administration agent (MA) by the interface (TMI) that transmits plane and management plane, and is mutual with the discovery agency (DA) and the protocol controller (PC) of control plane by the interface (CCI) that transmits plane and control plane.Here, the overhead byte function that reads and write can use the SDH signal processing chip to realize; Overhead processor (C) generally is made of cpu system (or a part of software module of moving in the cpu system), so that J0 is carried out overhead processing.Administration agent (MA) is a part of element of management plane function executing, is connected with the transmission plane.Find that agency and protocol controller are a part of elements of control plane function executing.The administration agent (MA), discovery agency (DA) and the protocol controller (PC) that are positioned at an intra-node can be made of independent cpu system or relevant chip respectively.Skewing mechanism in the present embodiment (X) can be the channel level skewing mechanism, and its input/output port granularity is not limit.If the port particle generally divides transposition circuit (TST chip) to make up by space-time greater than intersecting particle, can realize the multiplex section signal output of a plurality of light directions; If the port particle equals to intersect particle, generally make up by the space division cross connecting circuit, if will realize multiplex section output, then need after belonging to the signal multiplexing of same optical transmission direction, to export optical fiber again to.Here, when signal is input to this equipment and outputs to the circuit transmission, should be respectively through opto-electronic conversion and electric light conversion.
As shown in Figure 2, if when two adjacent crossover node J0 byte processor physical distances are far away, the reliable transmission that via node J0 byte processor is realized signal need be set betwixt.Via node J0 byte processor of the present invention comprises regenerator (G), overhead processor (C1), finds agency (DA), protocol controller (PC) and administration agent (MA), signal is output after regenerator (G) is handled, be connected with expense reading circuit (11) and expense write circuit (21) on this output signal, it is connected with overhead processor (C1) with write signal line (W) by read output signal line (R) respectively, reads and writes with the overhead byte that carries out J0.Here, signal can be multichannel, and regenerator (G), expense reading circuit (11) and expense write circuit (21) are corresponding with signal line respectively.Overhead processor (C1) is mutual with administration agent (MA) by the interface (TMI) that transmits plane and management plane, and is mutual with the discovery agency (DA) and the protocol controller (PC) of control plane by the interface (CCI) that transmits plane and control plane.Regenerator (G) comprises photoelectric conversion module, amplifier and filter etc., can realize opto-electronic conversion, amplify, when resetting, function such as shaping.Other component structures are identical with respective element structure in the aforementioned crossover node J0 byte processor.This embodiment has expressed the regeneration function of an optical transmission direction in the regenerator section node, and same domain technical staff should remove, and the regeneration function of a plurality of optical transmission direction is the combination of a direction regeneration function device on principle.
As shown in Figure 3, the discovery procedure with an one way link between the multiplex section neighbor node describes the present invention in detail.The first step: confirm that by signaling procedure discovery procedure begins between the multiplex section adjacent node.Relate to two time slot/space crossed connected node A, Z in the intelligent switched optical network, in the transmission plane link (link is masked as 1) that connects between A and the Z, comprise at least one regeneration node B.There is protocol controller (PC) in the control plane functional module of node A, when discovery procedure begins, send such as the discovery procedure of Begin_Verify (＜LOCAL_LINK_ID=1 〉) to node Z by data communication network (DCN) by the protocol controller (PC) of node A and to open beginning message, this message carries link flag information LOCAL_LINK_ID=1, after the multiplex section adjacent node Z that is in link 1 receives this message, its protocol controller (PC) is found requirement through resolving identification, return the affirmation message that opens the beginning such as the discovery procedure of Begin_Verify_Ack (Verify_ID) to node A by data communication network (DCN), after node A receives message, show that discovery procedure sets up.
Second step: discovery procedure Message Processing.Write neighbor discovery process sign (+), discovery procedure type code (##) at source node (A) to the J0 byte, multiplex section resource label (###) outwards sends through transmitting the plane link, extracts related news by adjacent node (the node Z of feeling the pulse with the finger-tip here).Here, the structure such as the following table of the J0 byte after the processing:
This table comprises following a few part:
Common sparing (# zone): the 1st bit of the 1st byte is " 1 ", and back 7 bits are as check code (CRC-7), and the 1st bit of all the other 15 bytes is " 0 ".So-called common sparing is meant whether these bits and J0 byte are used for finding irrelevant.
The tradition trace byte uses part (remove # partly all bits): totally 15 * 7 bits.This comprising:
Neighbours find sign: when finding as neighbours, back 7 bits of the 2nd byte are as the sign of neighbor discovery process, and content is "+"; Neighbours find that sign is written into, and is eliminated after discovery procedure finishes after the beginning is opened in discovery procedure.
Discovery procedure type indication (##): when being in discovery procedure, utilize N (N=2,3,4 of arbitrary byte in the 3rd byte to the 16 bytes, 5,6,7,8) bit as a token of the position, for example use " 0 " expression regenerator section neighbours to find, " 1 " expression multiplex section neighbours find, perhaps use " 1 " expression regenerator section neighbours to find, " 0 " expression multiplex section neighbours find.In this embodiment, use in the 3rd byte to the 16 bytes the 2nd bit position as a token of.The indication of discovery procedure type is written into after the beginning is opened in discovery procedure, is eliminated after discovery procedure finishes.Resource label: back 6 bits carrying neighbor discovery messages content (the ### part is totally 84 bits) of the 3rd byte to the 16 bytes.When being used for the multiplex section discovery, the content (###) of carrying discovery message is inserted destination node multiplex section resource information by source node.After finishing, discovery procedure is eliminated.
As shown in Figure 3, node A sends the requirement of writing J0 by the CCI interface to transmitting plane output port 1, drive expense write circuit (21) by overhead processor (C) by holding wire (W1) and write following information: back 7 bits of the 2nd byte are as the sign of neighbor discovery process, and content is "+"; The 2nd bit position as a token of in the 3rd byte to the 16 bytes, write multiplex section and find sign, for example be " 1 ", the 3rd to 8 bit writes resource label information in the 3rd byte to the 16 bytes, as Test (＜Local_Interface_ID=100〉＜Verify_ID 〉).The J0 byte is through the transparent node Z that is sent to of Node B, be input to the port one of node Z, the expense reading circuit (11) that is positioned at the input port 1 of node Z reads out J0, reading signal lines through being positioned at node Z (R1) is input to the overhead processor (C) that is positioned at node Z, confirm that J0 is used for multiplex section and finds, the resource information of carrying in the J0 is delivered to it through the control plane interface (CCI) that is positioned at node Z find agency (DA), confirm that multiplex section is communicated with, and realizes resource discovering.
The 3rd step: discovery procedure finishes.After destination node is finished message extraction, confirm to find successfully by signaling procedure and source node.Source node is removed the correlating markings in the J0 byte when the multiplex section discovery procedure finishes.After transmitting the panel data extraction, the protocol processor of node Z (PC) sends success message by data communication network (DCN) to node A, as Test_Status_Success (＜Local_Link_ID=1〉＜Local_Interface_ID=1＜Remote_Interface_ID=1＜Verify_ID), this message comprises link information and port information.After the protocol processor of node A was received signaling, (DCN) sent acknowledge message to node Z by data communication network, as Test_Statue_Ack (＜Verify_ID 〉).Discovery procedure is finished.
If do not have via node between the multiplex section neighbor node, then without the transparent transmission of via node, two nodes are directly mutual.Identical with above-mentioned processing procedure.
For the discovery procedure of two-way link, the discovery procedure of another direction is identical with said process.
As shown in Figure 4, via node is by the following method the J0 byte to be carried out transparent transmission:
1, overhead processor (C1) is discerned the J0 byte of extracting from expense reading circuit (11), according to finding that sign judges whether to exist neighbor discovery messages.If, then enter step 2 step, if not, then entered for the 4th step;
2, judge whether to the multiplex section neighbours find according to the discovery type code, if, then entered for the 3rd step, if not, then entered for the 7th step, be the regenerator section discovery procedure;
3, the function of shielding webmaster change J0 configuration is sent to output port with the J0 byte transparent; Return step 1, continue J0 is discerned;
4, judge whether the J0 configuration feature shields, if, then entered for the 5th step, if not, then entered for the 6th step;
5, remove shielding, entered for the 6th step;
6, handle according to traditional trace byte, for example whether identification has the J0 configuration change requirement that from management plane modify instruction or other forms of J0 byte is obtained by webmaster plane TMI interface.If the J0 of modification demand is arranged, then writes new data by expense write circuit (21).Return step 1, continue J0 is discerned;
7, judge whether the J0 configuration feature shields, if, then entered for the 8th step, if not, then entered for the 9th step;
8, remove shielding, entered for the 9th step;
9, be the regenerator section discovery procedure at this moment, handle according to the regenerator section discovery procedure.Return step 1, continue J0 is discerned.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those skilled in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (10)
1. one kind is utilized Regeneration Section Trace Message to realize the method that the multiplex section neighbours find, it is characterized in that this method may further comprise the steps:
1) opens the beginning signaling by discovery between multiplex section source node and the destination node and confirm that neighbor discovery process begins;
2) source node to the Regeneration Section Trace Message of SDH signal write that neighbours find to indicate, the information of discovery procedure type and multiplex section resource label, be sent to destination node through transmitting the plane link, this destination node is extracted the resource information in the Regeneration Section Trace Message, realizes resource discovering;
3) destination node sends and finds successful signaling to source node, and source node is removed the discovery sign in the Regeneration Section Trace Message and sent acknowledge message, and discovery procedure finishes.
2. the Regeneration Section Trace Message that utilizes according to claim 1 is realized the method that the multiplex section neighbours find, it is characterized in that this method also comprises:
If between source node and the destination node via node is arranged, then this via node is when receiving Regeneration Section Trace Message, at first determine whether it is neighbor discovery messages, whether the network management configuration function of then judging this Regeneration Section Trace Message if not shields, if shielding, then handle by traditional trace byte processing mode after the screen unlocking, if shielding is not then directly handled by traditional trace byte processing mode; If neighbor discovery messages then in discovery procedure to the Regeneration Section Trace Message transparent transmission.
3. the Regeneration Section Trace Message that utilizes according to claim 2 is realized the method that the multiplex section neighbours find, it is characterized in that, described via node is specially the Regeneration Section Trace Message transparent transmission: the discovery type in the identification Regeneration Section Trace Message, if be in the multiplex section discovery procedure, the then transparent output port that is sent to shields Regeneration Section Trace Message network management configuration function simultaneously; If be in the regenerator section discovery procedure, then the content of Regeneration Section Trace Message is sent to the control plane of this via node, and the network management configuration function of open Regeneration Section Trace Message.
4. realize the method that the multiplex section neighbours find according to the described Regeneration Section Trace Message that utilizes of arbitrary claim in the claim 1 to 3, it is characterized in that the structure of described Regeneration Section Trace Message is:
Back 7 bits of the 2nd byte are as the sign of neighbor discovery process; In the 3rd byte to the 16 bytes one or more bits as a token of the position, write the discovery procedure type; Bit except that being used as the discovery procedure type in the 2nd to the 8th bit in the 3rd byte to the 16 bytes is used for carrying discovery message; Remaining bit is as common sparing.
5. the Regeneration Section Trace Message that utilizes according to claim 4 is realized the method that the multiplex section neighbours find, it is characterized in that, described discovery procedure type comprises that the multiplex section neighbours find and the regenerator section neighbours find.
6. the Regeneration Section Trace Message that utilizes according to claim 1 is realized the method that the multiplex section neighbours find, it is characterized in that the discovery sign in the described removing Regeneration Section Trace Message is meant after find finishing and neighbours is found indicate, the information of discovery procedure type and multiplex section resource label is removed.
7. one kind is utilized Regeneration Section Trace Message to realize the system that the multiplex section neighbours find, it is characterized in that, this system includes the Regeneration Section Trace Message processor, this processor comprises time slot/space crossed jockey, find the agency, protocol controller, administration agent, overhead processor, expense reading circuit and expense write circuit, overhead processor is connected on time slot/space crossed jockey, and be connected by the expense reading circuit on each signal of overhead byte reading signal lines and time slot/space crossed jockey input, be connected by the expense write circuit on each signal of overhead byte write signal line and time slot/space crossed jockey output; Find that the agency is connected with protocol controller, and be connected on the overhead processor that administration agent is connected on the overhead processor by the management interface on it by the control interface on the protocol controller.
8. the Regeneration Section Trace Message that utilizes according to claim 7 is realized the system that the multiplex section neighbours find, it is characterized in that, this system also comprises the relaying Regeneration Section Trace Message processor that is connected between the Regeneration Section Trace Message processor, this processor includes regenerator, find the agency, protocol controller, administration agent, overhead processor, expense reading circuit and expense write circuit, transmission signals is output after regenerator is handled, be connected with expense reading circuit and expense write circuit on this output signal, it is connected with overhead processor with the write signal line by the read output signal line respectively; Find that the agency is connected with protocol controller, and be connected on the overhead processor that administration agent is connected on the overhead processor by the management interface on it by the control interface on the protocol controller.
9. realize the system that the multiplex section neighbours find according to claim 7 or the 8 described Regeneration Section Trace Message that utilize, it is characterized in that, described overhead processor is made of cpu system or SDH signal processing chip, can read and write Regeneration Section Trace Message in the signal.
10. the Regeneration Section Trace Message that utilizes according to claim 8 is realized the system that the multiplex section neighbours find, it is characterized in that, described regenerator contains photoelectric conversion module, amplifier and filter, and it connects successively, can carry out opto-electronic conversion to signal, amplifies, when resetting and shaping.
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