CN100531221C - Adaptation method in sue for syncretizing Internet and plesiochronous digital hierarchy - Google Patents

Abstract

New layer of data link layer protocol - data link procedure (DLP) is introduced between IP of network layer and PDH in physical layer in the invention to realize syncretizing adaptation between Internet and PDH in order to overcome shortage of current adaptation technique. The method possesses features are: high efficiency of forwarding IP packets, safety and reliability, flux engineering capability, 50 ms protected rearrangement function, realizing exchange between PDH circuit and optical wavelength directly, and realizing compatibility between 1Pv4 and IPv6 networks and compatibility to packet voice network. Using safety mechanism, network control management mechanism, flow management mechanism provided by DLP realizes safety management, control management and flow management for IP network. The method makes current IP network transits to united telecom public network in next generation smoothly.

Description

A kind of adaptation method that is used for internet and PDH (Pseudo-synchronous Digital Hierarchy) fusion

Technical field

The data that the present invention relates to the internet transmit the field, it is a kind of adaptation method that is used for Internet Protocol (english abbreviation is IP) and PDH (Pseudo-synchronous Digital Hierarchy) (english abbreviation is PDH) fusion, be mainly used in various routers (core or high-end switch router, edge or converge switch router, insert switch router), the various high/medium/low end Ethernet switch, multi-service transport platform (english abbreviation is MSTP), user side integrated access equipment and any the interconnect equipment relevant that exchange based on grouping (bag) with the internet.

Background technology

According to interrelated data, that realizes at present internet and PDH (Pseudo-synchronous Digital Hierarchy) does not adaptively have definite international standard, mainly adopt the adaptation method of internet and SDH (Synchronous Digital Hierarchy) to realize the adaptive of internet and PDH (Pseudo-synchronous Digital Hierarchy) when reality is implemented, concrete method has following several:

(1) adopt " peer-peer protocol " (english abbreviation is PPP) to add " high-level data link rules " (english abbreviation is HDLC);

(2) adopt SDH Link Access Procedure (english abbreviation is LAPS);

(3) mode of employing Generic Framing Procedure (english abbreviation is GFP).

Wherein first kind of adaptation method (adopting PPP+HDLC) is a kind of method that is used for realizing IP and SDH/SONET fusion of internet engineering task group (english abbreviation is IETF) definition, this scheme is by RFC2615, RFC1662, the RFC1661 definition of IETF, and RFC is request comment (English is Request For Comments).Second kind of adaptation method (adopting LAPS) is the ITU-T a kind of IP that X.85 advises determining and the adaptation method of SDH, it be a kind of to first method (with PPP+HDLC as adaptation layer protocol) simplify, the method for correcting process, it adopts key element of LAPS to replace two key elements of PPP+HDLC; The adaptation method of the third adaptation method (employing Generic Framing Procedure) is G.7041/Y.1303 a kind of adaptation method of proposed specifications of ITU-T, in this adaptation method, use GFP as data link layer protocol, it can realize the adaptive of IP and SDH, IP and optical transfer network (english abbreviation is OTN), this adaptation method still is that a kind of point-to-point connects the adaptation processing scheme in essence, above three kinds of schemes itself all be for realizing the adaptation method of IP and SDH fusion, but also can be used for the adaptive of IP and PDH.

In recent years, along with popularizing of computer technology, computer network is that the application of internet just progressively is penetrated into all trades and professions, the mankind are entering informationized society, the internet in the application of modern society life various aspects more and more widely, the internet is also changing people's the life and the mode of thinking in very big convenient people.Unspecial during the initial design internet for designing a kind of transmission technology in the internet, on the contrary, one of its target is to shield various physical layer details, on network layer (IP), can realize the interconnected of different physical networks, the initial main purpose of internet designer is a kind of network that can transmit data such as text rather than real time business such as speech of design in addition, this network using be the load mode of doing one's best, therefore this network does not have service quality to guarantee, and the internet must rely on other networks particularly telecommunications network could form a global network.On the other hand, people are in order to satisfy the requirement of Speech Communication, in worldwide, set up the transmission optical-fiber network that can interconnect, the technology that this transmission network is adopted mainly is that (English abbreviates SDH as to SDH (Synchronous Digital Hierarchy), corresponding with SDH in the North America is Synchronous Optical Network SONET) and PDH (Pseudo-synchronous Digital Hierarchy), wherein SDH is the technology that backbone network adopts, because the minimum speed limit of SDH is 155Mbps, and PDH conduct Fibre Optical Communication Technology the earliest also has certain application aspect access, therefore when the development internet, the very important point is the problem that how to transmit IP on PDH naturally, promptly how to realize IP over PDH, the adaptation method that above-mentioned three kinds of internets and PDH merge is exactly three kinds of adaptation technique schemes that successively propose in this case.

But, because internet and PDH network itself are a kind of networks of different nature, its main distinction is: the internet adopts packet switching, towards connectionless technology, it is divided into packets of information different in size one by one to information, this packets of information is referred to as IP datagram, and each IP network node utilizes Routing Protocol to realize the forwarding of IP bag according to the purpose IP address in the IP header in the IP datagram; And PDH itself is promptly to be a kind of tranmission techniques in order to make a phone call to design for transmit adopting time division multiplexing, circuit switching and connection-oriented traditional voice transmission, and PDH itself also is a kind of time-division multiplex technology.The problem that above-mentioned three kinds of adaptation methods have mainly solved is how to utilize the PDH point-to-point to transmit the problem of IP, but from the fusion aspect of IP network and PDH two macroreticulars, these three kinds of adaptation methods all come with some shortcomings and defective, mainly show:

(1) point-to-point that all belongs to of above-mentioned three kinds of adaptation methods connects solution, main benefit is that the point-to-point that has solved the IP bag transmits problem, but it is very complicated that these adaptation methods are handled, poor efficiency, when the IP bag being shone upon processing by these three kinds of modes as each node at network, each node all must carry out a series of complex process to each IP bag, it is every through a node to be specially the IP bag, so just must carry out each IP bag once from one deck to three layer, a series of processing from three layers to one deck again, promptly from physical frame (PDH frame) signal, extract data link layer protocol frame (being respectively PPP+HDLC or LAPS or gfp frame), extract the IP bag from data link layer protocol frame (PPP+HDLC or LAPS or gfp frame) again, then according to the purpose IP address in the IP header in the IP bag, by Routing Protocol each IP bag is transmitted processing, promptly be forwarded to different ports; During forwarding at first the IP three layers seal the data link layer protocol (data link layer protocol of above three kinds of packaged types that installs to two layers, be respectively PPP+HDLC, LAPS or GFP), again the data link layer protocol frame that has encapsulated the IP bag is being encapsulated on the payload that the ground floor physical layer is the PDH frame then, just encapsulate PPP+HDLC or LAPS or gfp frame in the payload field of PDH frame, the not only very complicated but also poor efficiency of this processing, especially core node, the data volume of handling is very huge, actual showing, this has become a key factor that has a strong impact on the IP network quality.

(2) there is not the network protection switch function; because what IP network adopted is according to the purpose IP address in the IP bag IP bag to be transmitted processing by Routing Protocol; when physical link breaks down; adopt the IP network of above-mentioned three kinds of adaptation methods must recomputate route; this may cause packet loss on the one hand; be if with important business such as the real-time business of IP carrying on the other hand,, therefore be difficult to satisfy the requirement of real time business because the switching time reality of IP network in seconds.

(3) because IP network adopts is that two big class Routing Protocols are that Interior Gateway Protocol and Exterior Gateway Protocol realize the Route Selection that IP wraps, this mode does not have the traffic engineering ability, even may cause having between two nodes many to connect link, but IP network may all be forwarded to the IP bag on the link, transmit by a link, it is congested to cause this link to produce, thereby causes packet loss, and this moment, other link was in idle condition.

(4) because above-mentioned three kinds of adaptation methods do not carry out any professional classification to the data business, and everybody is the same, all has identical priority, cause this IP network not have service quality to guarantee.

(5) because these three kinds of adaptation methods adopt is the point-to-point connection processing, must handle each packet at each node, if network is an all-optical network, must carry out a series of light-electrical-optical conversion process so, can not realize full light exchange, particularly, the optical wavelength exchange can not be realized, nor the direct exchange of virtual container or Synchronous Transfer Mode particle PDH circuit can be realized for the dense wavelength division multiplexing system that adopts the SDH frame structure.

(6) promptly adopt the adaptive mode of PPP+HDLC and LAPS for first and second kind, because what HDLC frame and LAPS frame adopted is that specified byte (0X7E) achieve frame is delimited, need carry out transparent processing to the IP bag, this mode has two defectives, the one, network security problem, if those spiteful people all are set to those specific two bytes (0X7D, 0X7E) to payload information, this doubles with regard to the flow that causes network so, gang up against if adopt, may cause network congestion; In addition, because these two kinds of adaptive modes all do not have error correction, if the frame delimiter byte occurs that wrong (theoretical probability that mistake occurs is 1/2 like this ⁸=1/256=0.00390625 promptly is about 3.9/1000ths), just may cause packet loss.

(7) adopt the IP network of above-mentioned three kinds of adaptation methods can say without any safety.As everyone knows, present IP network is without any fail safe, and the IP packet can be by intercepting, replace because above-mentioned adaptation method only is that the IP bag is mapped in the PDH payload field, these adaptation methods to the safety that improves IP network without any help.

(8) adaptation method of above-mentioned three kinds of IP and PDH can be used for IPv4 and IPv6, can realize that promptly adaptive the and IPv6 of IPv4 and PDH and PDH's is adaptive, but because IPv4 and IPv6 are incompatible, and owing to above-mentioned three kinds of adaptive modes all need be handled each IP bag in network layer, adopt three kinds of above-mentioned adaptation methods, make that IPv4 and IPv6 network can not be compatible.

(9) adopt in the network of above-mentioned adaptation method, traditional voice service is what to be separated with the IP network business, and generally believe that now following unified public network will adopt packet-switch technology, how these several adaptation methods are for realizing the voice service packetizing, and the aspects such as fusion that make packetized voice business and IP network are without any help.

Summary of the invention

A kind of novel IP that the objective of the invention is the deficiency of the adaptation method that merges at existing IP and PDH (Pseudo-synchronous Digital Hierarchy) and defective and design and the adaptation method of PDH fusion; can realize on the one hand being positioned at directly adaptive between the PDH of the IP of network layer and physical layer; make the PDH network can directly transmit IP; can solve the defective and the deficiency of IP network in existing three kinds of IP and the PDH adaptation method on the other hand again; for IP network provides a kind of high speed; the efficient mechanism of transmitting the IP bag; for IP network provides the quick protective switch function; the traffic engineering ability is provided; network security capability is provided; make IPv4 and the intercommunication of IPv6 Web-compatible; can support the whole speed ranges from the low rate to the two-forty; also be particularly suitable for using the packet switch interface of light; can realize based on the direct circuit exchange of various speed particles and the direct wavelength exchange of all-optical network; for existing telecommunication transmission resource finds a good outlet; can realize transmitting the compatibility of network with following packet voice; make present networks and existing voice network be smoothly transitted into the unified carrier class public network that adopts packet-switch technology of future generation; realize the unification of telecommunication transmission and exchange, so great reduction network struction cost.

The objective of the invention is to reach: by between the IP of network layer and PDH, introducing the novel data link layer protocol of one deck---data link rules (english abbreviation is DLP) in physical layer by following measure; utilize this novel data link layer protocol to realize the fusion of internet and PDH on the one hand; solve the deficiency and the defective of the network existence of existing internet and PDH fusion; utilize this agreement to realize the directly adaptive of internet and other various physical layer facilities on the other hand; and packet voice business and packet video business and various physical layer facilities is directly adaptive; thereby realization telephone network; the integration of three networks of internet and TV network; in the unified whole communication network of data link layer; make present networks be smoothly transitted into unified carrier class public network of future generation; IP operation only is the part of the upper-layer service of this new types of data link layer protocol (DLP) carrying; realize Internet Protocol (english abbreviation is IP) and the fusion of PDH (Pseudo-synchronous Digital Hierarchy) (PDH) and adaptive data link layer protocol with this new types of data link layer protocol (DLP) conduct; between data link layer and network layer communicate by letter and physical layer (PDH) all realizes by primitive with communicating by letter of data link interlayer; utilize the classification of this new types of data link layer protocol (DLP) definition; the destination address sign indicating number of compatible existing telephone number system and source address sign indicating number are represented the purpose IP address of IP bag and the forwarding equivalence class of source IP address; the forwarding equivalence class that utilizes IP bag promptly replaces the three layers of IP address to realize the two layers of forwarding and the exchange of IP bag as the destination address sign indicating number of described new types of data link layer protocol frame and source address sign indicating number as two layers data-link layer address; the security mechanism of utilizing this new types of data link layer protocol to provide guarantees that IP (IPv4 or IPv6) wraps in the safety in the network transport process; send miscellaneous service data with the Frame that defines in the described new types of data link layer protocol from the upper strata; the control frame of definition is realized the Topology Discovery that comprises of network; 2 layers of protection are switched; fault management; configuration management and performance management etc. are in interior network control management, and the traffic management frame of definition is realized the traffic engineering management of network.

According to method provided by the invention; it is characterized in that; by defining a novel data link layer protocol---data link rules (english abbreviation is DLP) realize existing telephone network; the integration of three networks of data communication network and video (TV) network; in the unified whole communication network of data link layer; make existing telephone network; data communication network (IP network) and video (TV) network are smoothly transitted into unified carrier class public network of future generation; IP operation is as just the part of the upper-layer service of this new types of data link layer protocol (DLP) carrying; the IP that realizes network layer with this new types of data link layer protocol (DLP) is directly adaptive with the various physical layer facilities that comprise PDH; the service that data link layer provides for network layer is adopted and is not confirmed formula information transfer service pattern; the data that send are not done any affirmation formula operation; data link layer is passed through " data link-data-request (the English DL_DATA.request of being) " for the service that network layer provides; " data link-data-indication (English is DL_DATA.indication) "; " data link-control-request (English is DL_CONTROL.request) "; 4 primitive such as " data link-control-indication (English are DL_CONTROL.indication) " are realized; physical layer is that two primitive are passed through in the service that data link layer (DLP) provides: " physical link-data-request (the English PL_DATA.request of being) "; " physical link-data-indication (English is PL_DATA.indication) " realizes; at transmitting terminal; when the IP bag needs to send; call DL_DATA.request (data link-data-request) primitive; this primitive comprises series of parameters; these parameters are used for determining the value of each field of DLP frame header and payload field; at receiving terminal; when the DLP client entity will receive data; the DLP entity activates DL_DATA.indication primitive; the value of the accepting state of this primitive indication incoming frame and each field of input DLP frame; if network layer needs DLP that network control function is provided; call data link-control primitive: " data link-control-request (DL_CONTROL.request) " and " data link-control-indication (DL_CONTROL.indication) " primitive; these two primitive comprise a series of command code and parameter; can provide network control function by these two primitive; as discovering network topology; 2 layers of protection are switched; configuration management; fault management; performance management etc.; at transmitting terminal; need be when data link layer sends to physical entity as data; the DLP entity activates PL_DATA.request primitive; will be when physical entity sends the DLP entity at receiving terminal as data; activate PL_DATA.indication primitive, each primitive semantic as follows:

(1)DL_DATA.request (

DestinationAddressCode，

SourceAddressCode，

DLPServiceData，

FrameLength，

ServiceType，

NetworkTopology，

Security，

FrameSequenceNumber，

SPI)

DL_DATA.request primitive contains 9 parameters, the connotation of each parameter is respectively: DestinationAddressCode represents the destination address sign indicating number, this parameter is determined the forwarding equivalence class that IP wraps according to the purpose IP address that sends in the IP packet head, with generating the destination address code word segment value that sends in the DLP frame header, SourceAddressCode represents the source address sign indicating number, this parameter is used for determining the forwarding equivalence class that IP wraps according to the source IP address that sends in the IP packet head, with generating the source address code word segment value that sends in the DLP frame header, the client signal that DLPServiceData indicates to send is an entire I P bag (grouping), send payload word segment value in the DLP frame with generating, the total length of the definite DLP frame that will send of FrameLength parameter, the type of service of ServiceType parameter indication DLP client layer signal, it sends business type field value in the DLP frame header with generating, the Security parameter indicates whether the DLP client signal is encrypted, authentication processing, the DLP entity determines to send security word segment value in the DLP frame header with it, the indication of FrameSequenceNumber parameter sends the number of frames (FSN) of data link layer protocol frame, the DLP entity determines to send FSN field value in the DLP frame header with it, the network topology of NetworkTopology parameter indication DLP network node, the DLP entity sends with it determines topological field value in the DLP frame header, SPI (SPI is the english abbreviation of Security Parameter Index) parameter is an option, if be used for determining the IP bag is encrypted, the security association of setting up at the communication two ends during authentication processing, be used for determining Security Parameter Index (SPI) field value in the DLP frame

(2)DL_DATA.indication(

DestinationAddressCode，

SourceAddressCode，

DLPServiceData，

ServiceType，

FrameLength，

ReceptionStatus，

NetworkTopology，

Security，

FrameSequenceNumber，

SPI)

DL_DATDA.indication primitive parameter semantic as follows: DestinationAddressCode represents the destination address sign indicating number, this parameter is determined the destination address code word segment value in the input DLP frame header, SourceAddressCode represents the source address sign indicating number, this parameter is determined the source address code word segment value in the input DLP frame header, DLPServiceData determines input DLP frame payload word segment value, the accepting state of ReceptionStatus indication incoming frame, if the FCS of incoming frame (Frame Check Sequence) field does not make a mistake, the value of ReceptionStatus is FCS_ERROR FREE, otherwise, if incoming frame makes a mistake, then the ReceptionStatus value is FCS_ERROR, the business type field value of ServiceType parameter indication input DLP frame, the FrameLength parameter is determined the total length of input DLP frame, whether Security parameter indication input DLP frame is encrypted, authentication processing, the Security field value of its indication input DLP frame, the FrameSequenceNumber parameter is indicated the FSN of described incoming frame, topological field value in the NetworkTopology parameter indication input DLP frame, the SPI parameter is used to refer to the Security Parameter Index field value of described incoming frame

(3) data link-control-request (DL_CONTROL.request) primitive

The form of data link-control-request (DL_CONTROL.request) primitive is a DL_CONTROL.request (command code; solicit operation ordered series of numbers table); wherein command code comprises Topology Discovery request (the English TOPOLOGY_DISCOVERY_REQ of being); 2 layers of protection switching request (English is L2PS_REQ); configuring request (English is CONFIGURATION_REQ); fault inquiry request (English is FAULT_INQUIRY_REQ); performance queries request (English is PERFORMANCE_INQUIRY_REQ) etc.; the concrete operations ordered series of numbers table of each command code is as follows: the solicit operation number of Topology Discovery request (TOPOLOGY_DISCOVERY_REQ) command code comprises the destination address sign indicating number; the source address sign indicating number; type of service; number of frames; 5 of Topology Discovery claim frame payload datas etc.; the solicit operation number of 2 layers of protection switching request (L2PS_REQ) command code comprises the destination address sign indicating number; the source address sign indicating number; type of service; number of frames; 5 of 2 layers of protection switching request frame payload datas etc.; the solicit operation number of configuring request (CONFIGURATION_REQ) command code comprises the destination address sign indicating number; the source address sign indicating number; type of service; number of frames; 5 of configuring request frame payload datas etc.; the solicit operation number of fault inquiry request (FAULT_INQUIRY_REQ) command code comprises the destination address sign indicating number; the source address sign indicating number; type of service; number of frames; 5 of fault inquiry claim frame payload datas etc.; the solicit operation number of performance queries request (PERFORMANCE_INQUIRY_REQ) command code comprises the destination address sign indicating number; the source address sign indicating number; type of service; number of frames; 5 of performance queries claim frame payload datas etc.; destination address sign indicating number in each operand; the source address sign indicating number; type of service; the isoparametric implication of number of frames is the same with data link-data-request primitive corresponding parameters implication

(4) data link-control-indication (DL_CONTROL.indication)

The form of data link-control-indication (DL_CONTROL.indication) primitive is a DL_CONTROL.indication (command code; the tabulation of indication operand); wherein command code comprises Topology Discovery response indication (the English TOPOLOGY_DISCOVERY_RESPONSE_IND of being); response indication (the English L2PS_RESPONSE_IND of being) is switched in 2 layers of protection; configuration response indication (English is CONFIGURATION_RESPONSE_IND); fault inquiry response indication (English is FAULT_INQUIRY_RESPONSE_IND); performance queries response indication (English is PERFORMANCE_INQUIRY_RESPONSE_IND) etc.; the concrete operations ordered series of numbers table of each command code is as follows: the indication operand of Topology Discovery response indication (TOPOLOGY_DISCOVERY_RESPONSE_IND) command code comprises the destination address sign indicating number; the source address sign indicating number; type of service; number of frames; 5 of Topology Discovery response frame payload datas etc.; 2 layers of protection are switched response and are indicated the indication operand of (L2PS_RESPONSE_IND) command code to comprise the destination address sign indicating number; the source address sign indicating number; type of service; number of frames; 5 of response frame payload datas etc. are switched in 2 layers of protection; the indication operand of configuration response indication (CONFIGURATION_RESPONSE_IND) command code comprises the destination address sign indicating number; the source address sign indicating number; type of service; number of frames; 5 of the savage lotus data of configuration response frame etc.; the indication operand of fault inquiry response indication (FAULT_INQUIRY_RESPONSE_IND) command code comprises the destination address sign indicating number; the source address sign indicating number; type of service; number of frames; 5 of fault inquiry response frame payload datas etc.; the indication operand of performance queries response indication (PERFORMANCE_INQUIRY_RESPONSE_IND) command code comprises the destination address sign indicating number; the source address sign indicating number; type of service; number of frames; 5 of performance queries response frame payload datas etc.; destination address sign indicating number in each operand; the source address sign indicating number; type of service; the isoparametric implication of number of frames is the same with data link one data one indication corresponding parameters implication

(5) physical link-request of data (PL_DATA.request)

PL_DATA.request (Userdata), this primitive have only a parameter, and this parameter is a user data, and English is Userdata,

(6) physical link-data indications (PL_DATA.indication)

PL_DATA.indication (Userdata), this primitive have only a parameter, and this parameter is a user data, and English is Userdata.

According to method provided by the invention, it is characterized in that, it is adaptive to realize that with described new types of data link layer protocol (DLP) internet and PDH (Pseudo-synchronous Digital Hierarchy) merge, physical layer is the pdh physical interface of existing whole speed ranges, can realize the direct exchange based on the circuit of PDH interface rate particle, wherein all kinds of speed grade of PDH (Pseudo-synchronous Digital Hierarchy) are: 1544 kilobits/second, 2048 kilobits/second, 6312 kilobits/second, 8448 kilobits/second, 34368 kilobits/second, 44736 kilobits/second, 139264 kilobits/second.

According to method provided by the invention; it is characterized in that defining a kind of novel data link layer protocol---data link rules (DLP) realize speech; the integration of three networks of data (IP) and video; it is that the specific phase mutual correlation relation (constituting certain specific coding relation) that relies on this data link layer protocol frame (DLP frame) to begin the bit information formation in the certain-length most realizes that the frame of described new types of data link layer protocol frame (DLP frame) is delimited; (English is Frame Length to frame length of definition in described data link layer protocol (DLP); FL) field is used for identifying with the byte form total length of this data link layer protocol (DLP) frame; (English is Frame Length Check to define a frame length verification; FLC) field is used for frame length field is carried out verification and carried out single-bit error or this particular verified encoding relation that 2 bit mistake correction process utilize these two field bit to constitute simultaneously realizes that the frame of described new types of data link layer protocol (DLP) frame delimits; (English is Service Type to define a type of service; ST) field is used for identifying the type of service of payload field encapsulation; thereby realize multiple services encapsulation; the type of service that regulation is different has different priority simultaneously; (English is Networks Topology to define a topological field; NT) come the topological classification of marked network node; whether define a safety (English for Security) field is used for identifying and the payload of encapsulation is encrypted; authentication processing; (English is Destination Address Code to the destination address sign indicating number of a classification of definition; DAC) and the source address sign indicating number (English is Source Address Code; SAC) identify the two layers of destination address and the source address of encapsulation business data packet; (English is Frame SequenceNumber to define a number of frames; FSN) field is used for the transmission sequence of identification data link layer protocol frame; (English is Extension Header to define an extension header; EH) field identifies and whether payload is carried out extension process; defining a filling length field is used for representing to fill if desired processing as payload is authenticated with the byte form; the length of filling during encryption; (English is Security Parameter Index to define a Security Parameter Index; SPI) identify the security association that the communication two ends were set up when the data authenticated encryption handled; define a payload (the English Payload of being) field and encapsulate miscellaneous service from the upper strata; (English is Frame Check Sequence to define a Frame Check Sequence; FCS) field comes described new types of data link layer protocol (DLP) frame is carried out verification; definition one class Frame sends the miscellaneous service data from the upper strata in described new types of data link layer protocol frame; definition traffic management frame is realized the traffic engineering management of network; the definition control frame is realized the Topology Discovery that comprises of network; 2 layers of protection are switched; fault management; configuration management and performance management etc. are in interior network control management; these three kinds of dissimilar frames are identified by the type field in the described new types of data link layer protocol frame; specific as follows: definition frame length (english abbreviation is FL) field length is 16 bits; definition frame length check field (english abbreviation is FLC) length is 15 bits; make FL and FLC field bit constitute BCH (31; 16) sign indicating number (BCH is the english abbreviation of BCH Bose-Chadhuri-Hocquengham's sign indicating number); this relation of utilizing the DLP frame realizes the frame demarcation of DLP frame and single-bit or 2 bit mistakes that FL occurs is carried out correction process; the generator polynomial of BCH (31,16) sign indicating number is G (x)=x ¹⁵+ x ¹¹+ x ¹⁰+ x ⁹+ x ⁸+ x ⁷+ x ⁵+ x ³+ x ²+ x+1, initialization value are 0, here x ¹⁵Corresponding highest significant position (english abbreviation is MSB), x ⁰Corresponding least significant bit (english abbreviation is LSB), the specific coding that the DLP frame utilizes its 31 bits that begin most (FL field and FLC field) to constitute concerns the demarcation that realizes the DLP frame, the DLP frame is delimited process and is realized according to finite state machine, finite state machine comprises three states: search (English is HUNT) attitude, presynchronization (English is PRESYNC) attitude, (English is SYNC) attitude synchronously, the finite state machine workflow diagram is as follows: (1) is in the search attitude, DLP handles 31 bits that receive is pursued FL and the FLC relation that correct format is sought in the bit search, in this state, BCH code does not have the single-bit error of FL field and FLC field or 2 bit error correction functions, in case in 31 bits that receive, find correct candidate FL and FLC matching relationship value, can suppose and determine a correct DLP frame, receive presynchronization (the English PRESYNC of the being) state that enters of handling, (2) in the PRESYNC attitude, DLP handles by searching for frame by frame to handle and realizes the demarcation of DLP frame, pursue FL and the correct matching value of FLC that the bit search is found according to previous step, can suppose and search a correct DLP frame, can determine the FL and the FLC field value of next frame then according to each field relation of this frame, and determine according to their relation whether they mate, and then next frame, in case determine that continuously (DELTA is a parameter to DELTA, it be one greater than 0 positive integer) individual correct DLP frame, DLP receives to handle and enters synchronous state, otherwise, if the FL of a frame and FLC field value do not match subsequently, enter the search attitude, at this moment, BCH code does not have the single-bit error of FL field and FLC field or 2 bit mistake error corrections, enter synchronous state from the search attitude and need search DELTA+1 correct DLP frame continuously, (3) at synchronous state, DLP handles the beginning that can determine next DLP frame by the FL of a frame and FLC field relation, can realize the parsing of a frame one frame then, FLC has single-bit error or 2 bit mistake error corrections in this state, if a plurality of bits (surpassing 2 bit mistakes) mistake takes place, then frame is delimited and was lost efficacy, framing is handled and is entered the search attitude, and send client server Signal Fail (english abbreviation is SSF) indication for client's adaptation processing, (4) the empty frame of DLP participates in frame and delimits processing, and abandon the sky frame subsequently, it is relevant with the DELTA value that the DLP frame is delimited the robustness of handling, the present invention advises that the DELTA value is 1, the reserved field that length of definition is 1 bit behind FLC gives over to and uses (being set to 0) in the future always, definition business type field length is 8 bits, can discern 2 altogether ⁸=256 kinds of types of service, wherein highest significant position is that what represented in 0 o'clock to encapsulate is the general data business (as common IP data service) of low priority, highest significant position is that the business of representing the encapsulation of DLP payload field at 1 o'clock is that the real time business of high priority is (as phone, real-time video traffic), the priority of DLP Business Processing order from high to low is followed successively by: control frame＞traffic management frame＞real time business (real-time speech, video or other real time business)＞data service (IP v4/IP v6), the business of high priority is at first handled in the formation of DLP network processes, the usage of business type field is as shown in table 1

The usage of table 1. business type field

The binary value of business type field	Usage
		00000000～00000011	Keep
00000100	IP v4 data
		00000101	Mobile IP v4 data
00000110	IP v6 data
		00000111	Mobile IP v6 data
00001000～00111111	Keep and give other data, services
		01000000	The 10Mbps Ethernet
01000001	The 100Mbps Ethernet
		01000010	The 10/100Mbps Ethernet
01000011	Gigabit Ethernet
		01000100～01111111	Keep
10000001	Control frame
		10000010	The traffic management frame
10000011	Real-time fixedly local call (local telephone) business
		10000100	Real-time fixedly National calls business
10000101	Real-time fixedly international long-distance telephone business
		10000110	In real time fixing local video telephone (local telephone) business
10000111	Real-time fixedly national distance visual telephone service
		10001000	Real-time fixedly international long-distance visual telephone service
10001001	Landline telephone is called out local (local telephone) business that moves in real time
		10001010	Landline telephone is called out mobile National calls business in real time
10001011	Landline telephone is called out international mobile long-distance telecommunications service in real time
		10001100	Landline telephone is called out local mobile video telephone business in real time

10001101	Landline telephone is called out mobile national distance visual telephone service in real time
		10001110	Landline telephone is called out the international long-distance visual telephone service that moves in real time
10001111	Move domestic voice service in real time
		10010000	Move international voice service in real time
10010001	Move domestic visual voice service in real time
		10010010	Move international visual voice service in real time
10010011	Real-time video traffic (broadcast type TV)
		10010100	Real-time video traffic (unicast type TV)
10010101	Real time business based on IP v4
		10010110	Real time business based on IP v6
10010111	Real time business based on mobile IP v4
		10011000	Real time business based on mobile IP v6
10011001	G.702PDH circuit emulation service: asynchronous circuit 1544 kilobits/second
		10011010	G.702PDH circuit emulation service: asynchronous circuit 2048 kilobits/second
10011011	G.702PDH circuit emulation service: asynchronous circuit 6312 kilobits/second
		10011100	G.702PDH circuit emulation service: asynchronous circuit 8448 kilobits/second
10011101	G.702PDH circuit emulation service: asynchronous circuit 34368 kilobits/second
		10011110	G.702PDH circuit emulation service: asynchronous circuit 44736 kilobits/second
10011111	G.702PDH circuit emulation service: synchronous circuit 1544 kilobits/second
		10100000	G.702PDH circuit emulation service: synchronous circuit 2048 kilobits/second
10100001	G.702PDH circuit emulation service: synchronous circuit 6312 kilobits/second
		10100010	G.702PDH circuit emulation service: synchronous circuit 8448 kilobits/second
10100011	G.702PDH circuit emulation service: synchronous circuit 34368 kilobits/second
		10100100	G.702PDH circuit emulation service: synchronous circuit 44736 kilobits/second
10100101	G.702PDH circuit emulation service: 139264 kilobits/second
		10100111	G.707SDH circuit emulation service: C-11,1648 kilobits/second
10101000	G.707SDH circuit emulation service: C-12,2224 kilobits/second
		10101001	G.707SDH circuit emulation service: C-2,6832 kilobits/second
10101010	G.707SDH circuit emulation service: C-3,48384 kilobits per seconds
		10101011	G.707SDH circuit emulation service: C-4,149760 kilobits per seconds
10101100	G.707SDH circuit emulation service: VC-11,1664 kilobits per seconds
		10101101	G.707SDH circuit emulation service: VC-12,2240 kilobits/second
10101110	G.707SDH circuit emulation service: VC-2,6848 kilobits/second
		10101111	G.707SDH circuit emulation service: VC-3,48960 kilobits/second
10110000	G.707SDH circuit emulation service: VC-4,150336 kilobits/second
		10110001	G.707SDH circuit emulation service: TU-11,1728 kilobits per seconds
10110010	G.707SDH circuit emulation service: TU-12,2304 kilobits per seconds
		10110011	G.707SDH circuit emulation service: TU-2,6912 kilobits per seconds
10110100	G.707SDH circuit emulation service: TU-3,49152 kilobits per seconds
		10110101	G.707SDH circuit emulation service: AU-3,50304 kilobits per seconds
10110110	G.707SDH circuit emulation service: AU-4,150912 kilobits per seconds
		10110111	G.707SDH circuit emulation service: STM-0,51480 kilobits/second
10111001	G.707SDH circuit emulation service: STM-1/OC-3c, 155520 kilobits/second
		10111010	G.707SDH circuit emulation service: STM-4OC-12c, 600080 kilobits/second
10111011	G.707SDH circuit emulation service: STM-16 ,/OC-48c 2488320 kilobits/second

10111100	DVB, MPEG-1 transmits bit stream
		10111101	DVB, MPEG-2 transmits bit stream
10111110	DVB, MPEG-4 transmits bit stream
		10111111～11111111	Keep and give other real time business

Defining topological field length is 4 bits; wherein binary value " 0001 " is represented bus structures; binary value " 0010 " expression star structure; binary value " 0011 " expression tree topology; binary value " 0100 " expression ring topology; binary value " 0101 " expression grid (Mesh) topological structure; other values keep to give in the future to be used; for ring topology and network topology; the invention provides 50 milliseconds of protection switch functions; definition secure fields length is 4 bits; wherein binary value " 0000 " expression is not carried out any encryption to upper-layer service; authentication processing; binary value is represented carry out encryption from the business datum on upper strata for " 0001 "; binary value " 0010 " expression is carried out authentication processing to the business datum from the upper strata; binary value " 0100 " expression is to encrypting and authentication processing from the business datum on upper strata; other values keep in the future to be used; definition destination address code length is 64 bits; definition source address code field length is 64 bits; the destination address sign indicating number adopts identical hierarchy with the source address sign indicating number; all (English is Country Code by national code; CC); (English is National Region Code to domestic area code; NRC); (English is Node Area Code to station code; NAC) and personal code work (English is User Code; UC) 4 fields are formed; each field length is 16 bits; wherein national code is represented the first order forwarding label of upper-layer service; domestic area code is represented the second level forwarding label of upper-layer service; station code is represented the third level forwarding label of upper-layer service; personal code work is represented the fourth stage forwarding label of upper-layer service; definition header field length is 8 bits; wherein binary value does not have extension header for " 00000000 " expression; other values keep in the future to be used; it is 8 bits that length field length is filled in definition; be used for filling the length that the DLP payload field is filled when handling with byte form sign; definition frame sequence-number field length is 16 bits; be used for the DLP frame that sends is carried out sequence mark; this field value carries out sequence mark since 0 to the DLP frame that sends; up to maximum,, send the value that processor is removed register if FSN reaches maximum; and count again since 0; send to guarantee that the DLP frame can be transmitted according to correct order; receive and handle, FSN also provides anti-playback simultaneously, and definition Security Parameter Index field length is 16 bits; this field is optional; its value is arbitrarily, and be used in combination the security association that identifies this DLP frame uniquely (English is SecurityAssociation, SA) with DLP destination address sign indicating number; wherein the SPI value is that 0 reservation is given local; specific implementation is used; metric 1～255 is kept to using in the future by IANA (IANA is the english abbreviation of InternetAssigned Numbers Authority), and other values are determined according to the encrypting and authenticating algorithm that adopts that by communicating pair defining payload field length is 0～65535 byte; be used for encapsulating entire I P bag from network layer; definition padding data (this field is optional) field length is 0～255 byte, and occurrence is relevant with the encrypting and authenticating algorithm of employing, and its value is determined by the encrypting and authenticating algorithm; define the verify data that an authentication data field (this field is optional) generates when depositing authentication processing; the authentication data field value is relevant with the identifying algorithm of employing, and its value is determined (generation), definition frame verification sequence (Frame Check Sequence by concrete identifying algorithm; FCS) field length is 32 bits; be used for the payload of part header fields content in the data link layer protocol frame (DLP frame) and encapsulation is carried out verification, FCS verification scope comprises: first bit of business type field begins from the DLP frame, until the ending of DLP frame; specifically comprise business type field; the topology field; secure fields; the destination address sign indicating number; the source address sign indicating number; extension header; fill length field; number of frames; the Security Parameter Index (if there is); payload; the padding data (if there is); field bit streams such as verify data (if there is) carry out checking treatment, and checking algorithm adopts the CRC-32 of IEEE802.32002 version definition: generator polynomial is G (x)=x ³²+ x ²⁶+ x ²⁶+ x ²³+ x ²²+ x ¹⁶+ x ¹²+ x ¹¹+ x ¹⁰+ x ⁸+ x ⁷+ x ⁵+ x ⁴+ x ²+ x ¹+ 1, here, x ³²Corresponding MSB position, and x ⁰Corresponding LSB position is if DLP frame generation fcs error abandons the DLP frame that makes a mistake, if some field value can not be discerned, fcs error perhaps occurs, then think invalid data link layer protocol frame, invalid frame will be dropped, do not notify transmit leg, also do not produce any action, invalid frame comprises:

(1) the DLP frame of received frame generation fcs error (FCS does not match),

(2) received frame length is less than the frame of 30 bytes,

(3) frame that can not discern of business type field,

(4) frame that can not discern of other fields of header,

If network layer does not have the IP bag to need to send, need fill processing at the DLP frame gap, promptly send empty frame, the purpose that sends empty frame is in order to regulate two internodal speed, empty frame sends to its adjacent nearest node from a node, neighbor node is not forwarded to any other place to it after receiving the sky frame, directly it is abandoned, do not notify transmit leg yet, the content of the empty frame of filling that sends at frame gap comprises frame length field, the frame length check field, length is the reserved field (always being set to 0) and the source address sign indicating number (station code and the personal code work field that include only in the source address sign indicating number amount to 4 bytes) of 1 bit, at transmitting terminal, the payload field that the DLP frame that has encapsulated the IP bag is encapsulated into the PDH frame must be carried out scrambler before, before receiving terminal is to any processing of data link layer protocol frame, at first carry out descrambling code, could be for further processing to the DLP frame behind the descrambling code, scrambler and descrambling code adopt motor synchronizing scrambler/descrambler, and its generator polynomial is G (X)=X ⁴³+ 1.

According to method provided by the invention, it is characterized in that, comprise a destination address sign indicating number (the English Destination Address Code of being in the described new types of data link layer protocol frame, DAC) and source address (English is Source Address Code, SAC) code field, for IP data service (IPv4/IPv6), destination address sign indicating number in the described new types of data link layer protocol and source address sign indicating number are represented the purpose IP address of IP bag and the forwarding equivalence class of source IP address respectively, forwarding equivalence class with the IP bag is promptly realized forwarding and the exchange that IP wraps as the destination address sign indicating number and the source address sign indicating number replacement three layers of IP address of described new types of data link layer protocol frame as two layers data-link layer address, for the packet voice business, the destination address sign indicating number of described new types of data link layer protocol and source address sign indicating number are represented the interim identity card (number) of the expression user identity of the telephone number of both call sides or the appointment of network authentication center respectively, the destination address sign indicating number adopts identical hierarchy with the source address sign indicating number, all (English is Country Code by national code for complete destination address sign indicating number and source address sign indicating number, CC), (English is National Region Code to domestic area code, NRC), (English is NodeArea Code to station code, NAC) and personal code work (English is User Code, UC) four parts are formed, the present invention defines the destination address sign indicating number and source address code field length is 64 bits (8 eight hytes), wherein the national code field length is 16 bits (2 eight hytes), be used for identifying certain service code of some countries or specific geographical area, CC is the first order forwarding label of corresponding IP bag, can there be one or more service code country or geographic area, as the voice service code, the video traffic code, IP operation code (IPv4 service code or IP v6 service code), the concrete national code value of related service is specified by relevant international standard mechanism such as ITU, the international area code of the IP operation national code that proposes for the present invention in can the existing telephone coding system also can be other values of other appointment, domestic area code field length is 16 bits, certain regional service code in the indication a state, NRC is the second level forwarding label of IP bag, concrete NRC value is distributed by the communication highest administration mechanism of this state, for IP operation, this value can be that the national distance area code in the present phone number system also can be other values of other appointment, the station code field is 16 bits, identify the service code of certain network node, this yard is the third level forwarding label of IP bag, occurrence is specified by Virtual network operator or Internet service provider, the personal code work field length is 16 bits, indicate certain user's service code, this yard is the fourth stage forwarding label of IP bag, concrete personal code work value is specified by Virtual network operator or Internet service provider, adopting described new types of data link layer protocol (DLP) to realize which country the Network Access Point of IP over PDH or convergent point belong to according to the purpose IP address that IP wraps, which area of this state, which node and which user's quaternary structure is determined the forwarding equivalence class of IP bag, and the destination address sign indicating number of this value as described new types of data link layer protocol (DLP) frame, the forwarding that wraps in the network of IP is subsequently determined by the destination address sign indicating number of described new types of data link layer protocol (DLP) frame, the high speed that substitutes three layers of purpose IP addresses realization IP packet in the IP network with two layers destination address sign indicating numbers is transmitted, during forwarded DLP frame, at first search the business type field in the DLP frame, determine professional priority by concrete type of service, be the national code in the destination address sign indicating number of searching in the DLP frame then, next is domestic area code, be station code once more, be personal code work at last, in case a certain item code of discovery DLP frame is different with local node, the DLP node is no longer handled DAC back field in the DLP frame, directly be forwarded to next node, the principle that the DIP frame is transmitted is to adopt longest match principle, described can be to utilize IP routing protocol such as OSPF (the English Open Shortest Path First of being according to destination address sign indicating number decision route, OSPF) or Border Gateway Protocol (English is Border Gateway Protocol, BGP) dynamic routing table of Chan Shenging also can be that the traffic engineering of utilizing DLP to provide is come explicit configuration route.

According to method provided by the invention, it is characterized in that, described new types of data link layer protocol comprises that a cover security mechanism guarantees the safety of upper-layer service in the network transport process, concrete grammar is: (1) utilizes the forwarding equivalence class of IP bag (IPv4 or IPv6) to replace IP (IPv4 or IPv6) address to realize IP (IPv4 or IPv6) thereby the forwarding and the exchange of bag shield real IP (IPv4 or IPv6) address, (2) upper-layer service is encrypted and authentication processing, if desired the IP bag being carried out encrypting and authenticating handles, by a series of negotiation of two ends process of communicating by letter at needs, determine the cryptographic algorithm of employing, identifying algorithm, be provided with or exchange initialization password etc., consulting the operations such as exchange initialization password of encrypting and authenticating algorithm can adopt the internet security internet key exchange (english abbreviation is IKE) related and IKMP (english abbreviation is ISAKMP) and RFC2409 definition of RFC2408 definition to realize, set up two security associations (English SecurityAssociation of being then, SA), and according to purpose IP address, the algorithms that adopt etc. are determined a Security Parameter Index (english abbreviation is SPI), this index value is added in the Security Parameter Index field in described new types of data link layer protocol frame (DLP frame) header, SPI is used for identifying the IP bag is encrypted, security association during authentication processing, the encrypting and authenticating algorithm that Security Parameter Index identifies security association uniquely and adopted with the destination address sign indicating number, simultaneously relevant parameter such as destination address sign indicating number, the cryptographic algorithm that adopts, identifying algorithm, the initialization password, Security Parameter Indexs etc. add in the security association database, security association database has write down and security-related various data, it is 32 bits that the present invention defines the SPI field length, wherein decimal value " 0 " is used for node this locality, specific implementation is used, decimal value 1～255 is kept to using in the future by IANA, other values are used to identify security association, owing to encrypt, the different needs of identifying algorithm carries out some data and fills, the data of filling are positioned at after the payload field, and a length value of filling adds in the filling length field value, the verify data that authentication processing generates is positioned at after the padding data field, before the frame check field, utilize the number of frames field value in the described new types of data link layer protocol (DLP) that anti-reproducing function is provided, when carrying out encryption, the scope of encrypting comprises coming the entire I P bag of order network layer, field contents such as padding data, the scope that authenticates when carrying out authentication processing comprises the filling length field, the number of frames field, the Security Parameter Index field, payload data (entire I P bag), field contents such as padding data.

According to method provided by the invention; it is characterized in that; described new types of data link layer protocol comprises that the perfect network control administrative mechanism of a cover realizes the Topology Discovery that comprises of IP (IPv4 or IPv6) network; 2 layers of protection are switched; the Link State indication; fault management; performance management; configuration managements etc. are in interior control and management; described network control management realizes by control frame; the present invention's definition represents that when the binary value of the business type field of described new types of data link layer protocol frame is " 10000001 " content that the encapsulation of data link layer protocol frame (DLP frame) payload field is carried is a network control management information; corresponding data link layer protocol frame is a control frame; control frame is realized Topology Discovery; the Link State indication; fault management; performance management; network control and management functions such as configuration management; for annular and network topology; control frame also provides a kind of mechanism that realizes 50 milliseconds of protection switch functions; control frame adopts TLV (Type-Length-Value; type-length-value) structure; type field length is 8 bits; be used for identifying the type of control frame; length field length is 8 bits; be used for representing the length of value field in the TLV structure (English is Value) with the byte form; what value field comprised control frame has particular contents such as related parameter; it is as shown in table 2 that the present invention defines in the control frame in the TLV structure usage of type field; what represent when wherein type field value is binary " 00010001 " that control frame carries is OSPF (OSPF; english abbreviation is OSPF) Routing Protocol information; control frame carries the type field binary value is BGP (BGP is the english abbreviation of Border Gateway Protocol) Routing Protocol information for " 00010010 " expression; control frame carries the type field binary value is Signaling System 7(SS-7) (english abbreviation is SS7) information for " 00010011 " expression; what the type field binary value carried for " 00010100 " expression control frame is signaling information H.323; control frame carries the type field binary value is conversation initialized protocol (english abbreviation is SIP) signaling information for " 00010101 " expression; control frame carries the type field binary value is Media Gateway Control Protocol (english abbreviation is MGCP) signaling information for " 00010110 " expression; when being binary " 11111111 ", type field represents that control frame is the self-defining management control frame of manufacturer; the self-defining management function of manufacturer comprises that equipment manufacturers are the self-defining network management control function of network management control function and operator that home built relevant devices is added; its management data content is self-defined by manufacturer; but need to adopt the TLV structure; the number of frames value of DLP control frame is used for identifying the sequencing that control frame sends; realize that sign DLP control information sends the function of sequence successively; the payload information field of DLP control frame can comprise a plurality of control TLV information; the realization of chip of the present invention for convenience (is generally adopted 32 as present chip; requiring the control frame total length like this is the integral multiple of 32 bits); requiring the length of The whole control frame is the integral multiple of 32 bits; if originally DLP control frame length is not the integral multiple of 32 bits; then fill processing with the byte that is 0 entirely behind control TLV, the length of filling identifies with the byte form with the filling length field of DLP control frame.

The usage of type field value in table 2. control frame (binary value)

The binary value of type field	Usage
		00000000	Keep
00000001	The Topology Discovery claim frame
		00000010	The Topology Discovery response frame
00000011	Topology report frame
		00000100	2 layers of protection switching request frame
00000101	Response frame is switched in 2 layers of protection
		00000110	2 layers of protection switch status report frame
00000111	The configuring request frame
		00001000	The configuration response frame
00001001	The configuration report frame
		00001010	The fault inquiry claim frame
00001011	The fault inquiry response frame
		00001100	The Trouble Report frame
00001101	The performance queries claim frame
		00001110	The performance queries response frame
00001111	The performance report frame
		00010000	WTR_Request (Wait-to-Restore claim frame)
00010001	Routing Protocol---OSPF
		00010010	Routing Protocol---BGP
00010011	Signaling---Signaling System 7(SS-7) (english abbreviation is SS7)

00010100	Signaling---H.323
		00010101	Signaling---conversation initialized protocol (SIP)
00010110	Signaling---Media Gateway Control Protocol (MGCP)
		00010111～11111110	Keep
11111111	Manufacturer's self-defining dedicated network control and management frame

According to method provided by the invention; it is characterized in that; the network control administrative mechanism that described new types of data link layer protocol provides comprises Topology Discovery mechanism; whom Topology Discovery is used for finding out is the neighbor node of network node (DLP node) and the state of neighbor node; can find have what nodes to work on the ring with it for annular and network topology network node (DLP node); the realization of topology discovery function mainly is to rely on Topology Discovery claim frame (Topology_Discovery_Requestframe); Topology Discovery response frame (Topology_Discovery_Responseframe) and topology report frame (Topology_State_Report_frame) are realized; during installation of project stage or engineering operation; network node (DLP node; as node A) with the L2 address sign indicating number of this node as destination address periodically broadcast topology find that claim frame (Topology_Discovery_Request_frame) is to other nodes (claiming that one of them is a Node B); the transmission cycle is by Topology Discovery timer (Timer_Topology_Discovery; it is programmable sending timing; default to 2 seconds) determine; all nodes (as Node B) that receive the Topology Discovery claim frame respond for node A by the Topology Discovery response frame; give node A the existence of Node B and state feedback thereof; node A adds contents such as other address of node sign indicating numbers that receive and corresponding work state in the topological address database of node A to; for annular and network topology; station code (NAC) the field value content that has artis to go up in each address of node sign indicating number according to ring is determined to encircle upward or the node sequence in the grid; if node A receives the identical operations content from Node B continuous 3 times; then think the Topology Discovery frame efficient in operation of node; relevant topological state content is write the topological database of ingress; network node (DLP node) is reported the state of this node to other nodes (especially network management entity) with topology report frame; particularly for bus topology; star and tree-like this three class are not protected its topological state of node report of the topological structure of switch function owing to the topological structure reason; the present invention defines and represents when type field value is binary value " 00000001 " among the control frame TLV that control frame is the Topology Discovery claim frame; be the Topology Discovery response frame during binary value " 00000010 "; represent during binary value " 00000011 " that control frame is a topology report frame; the Topology Discovery claim frame; the value (Value field value) of Topology Discovery response frame and topology report frame all is two parameters; first is a node address; length is 8 bytes; second is the node operating state; length is 1 byte, and the node operating conditions is as shown in table 3.

Second parameter of table 3. Topology Discovery frame

According to method provided by the invention; it is characterized in that; the network control administrative mechanism that described new types of data link layer protocol provides comprises 2 layers of wrap protection; 2 layers of protection switched to refer to when the network physical link and broken down (as fibercuts) or the permission of the node device K1/K2 protocol that similar SDH ring adopts when breaking down realizes the power of self-healing recovery in 50 milliseconds; 50 milliseconds of protection switch functions provided by the invention are mainly used in annular or network topology etc. and can realize protecting on the link of switching; with two fine rings is example; if certain node (DLP node on the ring; be assumed to node 2) go up in certain direction (be assumed to from node 1 to node 2 direction) that (its value is programmable 20 milliseconds of times; the default value of the present invention definition is 20 milliseconds) in do not receive any data message and (comprise business data frame; control frame; traffic management frame or empty frame etc.) or physical link breaks down (as the fracture of optical fiber facility) or node breaks down (losing efficacy or the physical signalling degeneration as physical signalling); this node enters 2 layers of protection switch status; sending 2 layers of guard mode claim frame (L2PS_Request frame) goes up coupled node (as node 1) for network (ring or network topology); node 1 also enters 2 layers of protection switch status (english abbreviation is L2PS) after receiving these 2 layers of guard mode claim frames; and send 2 layers of protection switch status report frame (L2PS_State_Report frame) and give the node that connects network management entity or be broadcast to all nodes that are in normal state on the ring; in the L2PS attitude; all packets of 2 are switched on the standby path from node 1 to node; if the fault clearance on the node 2; node 2 enters normal state; start WTR (Wait-to-Restore) timer (Timer_WTR; its value is programmable; scope is 0～1800 second; default value is 10 seconds); in case the WTR timer stops; node 2 sends WTR claim frame (WTR_Request frame) along the path before and after switching and gives node 1; node 1 returns normal state from node L2PS attitude after receiving this frame; when being binary " 00000100 ", the type field value that the present invention defines control frame represents that control frame is 2 layers of protection switching request frame; when being binary " 00000101 ", the type field value of control frame represents that control frame is that response frame is switched in 2 layers of protection; when being binary " 00000110 ", the type field value of control frame represents that control frame is that the report frame is switched in 2 layers of protection; 2 layers of protection switching request frame TLV structure intermediate value (Value; V) parameter of field has 2; first is this address of node sign indicating number; length is 8 bytes; second operating state (Forced Switch FS that parameter is this node; physical signalling inefficacy PSF; physical signalling degeneration PSD and Manual Switch); length is 1 byte; the binary value of each state is as shown in table 4; other values of this byte keep to be done to use in the future; the parameter that value field in the response frame TLV structure is switched in 2 layers of protection has two; first is this address of node sign indicating number; length is 8 bytes; second parameter length is 1 byte; its binary value is successfully realized switching for " 00000000 " is represented; binary value is switched unsuccessful for " 11111111 " expression; other binary values keep; 2 layers of protection are switched and are reported that value field has three parameters in the frame TLV structure; first parameter is the address of node sign indicating number; length is 8 bytes; second parameter is the reason of switching of node; length is 1 byte; the binary value of each attitude is as shown in table 4; whether the 3rd parametric representation node is in 2 layers of guard mode; wherein binary value is in 2 layers of protection switch status for " 11111111 " expression; binary value is in normal state for " 00000000 " expression; other are worth reservation; when control frame TLV type field value is binary " 00010000 "; the expression control frame is the WTR_Request frame; the WTR_Request frame has only a parameter; length is 8 bits; value is represented successful Wait-to-Restore for binary " 11111111 ", and other are worth reservation.

The 2nd parameter type of table 4.L2PS claim frame and L2PS report frame

Value	State
		10000000	Forced Switch (Forced Switch, FS)
00100000	The physical signalling inefficacy (Physical Signal Fail, PSF)
		00001000	The physical signalling degeneration (Physical Signal Degrade, PSD)
00000010	Manual Switch (Manual Switch, MS)
		Other	Keep

According to method provided by the invention, it is characterized in that, the network control administrative mechanism that described new types of data link layer protocol provides comprises deployment management mechanism, deployment management mechanism is used for realizing to the relevant configuring ports management of network node (DLP node) equipment, the port address of network node (DLP node) equipment must dispose one two layers address as the source address sign indicating number (SAC) of this port in the installation of project stage, the configuration management frame comprises three kinds: configuring request frame (Configuration_Request frame), configuration response frame (Configuration_Response Frame), configuration report frame (Configuration_Report frame), during installation of project stage or engineering operation, network management entity is sent the configuring request frame by network management interface to each link (port) of network node (DLP node) equipment and is configured, the DLP node responds to network management entity by configuration response frame or configuration report frame, the present invention defines when type field value is binary system " 00000111 " value among the control frame TLV and represents that control frame is the configuring request frame, be the configuration response frame during binary system " 00001000 ", represent during binary system " 00001001 " that control frame is the configuration report frame, the configuring request frame comprises two parameters, first is origin node address (length is 8 bytes), second is new node address sign indicating number (length is 8 bytes), the value of configuration response frame (Value field value) comprises three parameters: first is origin node address (length is 8 bytes), second parameter is new node address sign indicating number (length is 8 bytes), the 3rd parameter length is 1 byte, its binary value be " 00000000;; expression configuration successful; binary value " 11111111 " expression configuration is unsuccessful; other values keep to give in the future to be used; the configuration report frame comprises two parameters: first is a node address (length is 8 bytes), second parameter length is 8 bytes, represents the configuration address of this node.

According to method provided by the invention, it is characterized in that, the network control administrative mechanism that described new types of data link layer protocol provides comprises fault management mechanism, fault management mechanism is used for realizing the fault management to network node (DLP node), fault management is realized by the fault management frame, the fault management frame comprises three: fault inquiry claim frame (Fault_Inquiry_Request frame), fault inquiry response frame (Fault_Inquiry_Response frame) and Trouble Report frame (Fault_Report frame), the present invention defines and represents when type field value is binary value " 00001010 " among the control frame TLV that control frame is the fault inquiry claim frame, be the fault inquiry response frame during binary value " 00001011 ", represent during binary value " 00001100 " that control frame is the Trouble Report frame, the fault inquiry claim frame comprises 1 parameter, this parameter is node address (length is 8 bytes), the value of fault inquiry response frame (Value field value) comprises two parameters: first is a node address (length is 8 bytes), second parameter length is that 1 byte is used for representing fault type, wherein binary value is physical signalling inefficacy (PSF) for " 00000000 " expression fault, binary value " 11111111 " expression fault is physical signalling degeneration (PSD), binary value is the normal fault-free of " 00001111 " expression node, other values keep to give in the future to be used, the value field of Trouble Report frame comprises two parameters: first is a node address (length is 8 bytes), second parameter length is that 1 byte is used for representing fault type, wherein binary value is physical signalling inefficacy (PSF) for " 00000000 " expression fault, binary value " 11111111 " expression fault is that physical signalling is degenerated (PSD), and other values keep to give in the future to be used.

According to method provided by the invention, it is characterized in that, the network control administrative mechanism that described new types of data link layer protocol provides comprises performance management mechanism, performance management mechanism is used for realizing the performance management to network node (DLP node), performance management through performance management frames realizes, the performance management frame comprises three kinds of frames: performance queries claim frame (Performance_Inquiry_Request frame), performance queries response frame (Performance_Inquiry_Response frame) and performance report frame (Performance_Report frame), when the control frame type field value is binary " 00001101 ", the expression control frame is the performance queries claim frame, the performance queries claim frame is used for asking certain performance index of certain network node of inquiry (DLP node), when the control frame type field value is binary " 00001110 ", the expression control frame is the performance queries response frame, the performance queries response frame is used for certain performance index of certain node that response performance query requests frame proposes, when the control frame type field value is binary " 00001111 ", the expression control frame is the performance report frame, the performance report frame is used for reporting to network management entity every performance index of certain node, the value of performance queries claim frame (Value) field comprises three parameters, first parameter is for asking the node address sign indicating number of query performance, length is 8 bytes, second parameter is the time measurement unit that is used for identifying calculation of performance indicators, length is 4 bits, wherein binary " 0001 " expression unit of measurement is second, binary " 0010 " expression unit of measurement is minute, binary " 0011 " expression unit of measurement is hour, binary " 0100 " expression unit of measurement is the sky, other field values keep to using in the future, the 3rd parameter is the performance index type, length is 4 bits, wherein binary " 0001 " expression performance index are Frame Check Sequence mistake number, binary " 0010 " expression number of dropped packets, binary " 0011 " expression packet loss, the time delay (time delay) of binary " 0100 " expression bag, other values keep to give in the future to be used, the value of performance queries response frame (Value) field comprises 4 parameters, first parameter length is 8 bytes, be used for representing node address that the performance queries claim frame is responded, second parameter length is 4 bits, be used for identifying the time measurement unit of calculation of performance indicators, the 3rd parameter length is that 4 bits are used for identifying the performance index type, the 4th parameter length is 3 bytes, be used for representing the performance index value that specifically will inquire about, the value of performance queries response frame (Value) field second the same with the usage of second and the 3rd parameter of value (Value) field of performance queries claim frame with the usage of the 3rd parameter (time measurement unit and performance index type), the value of performance report frame (Value) field comprises 4 parameters, first parameter length is 8 bytes, be used for representing to send the node address of performance report to network management entity, second parameter length is 4 bits, be used for identifying the time measurement unit of calculation of performance indicators, the 3rd parameter length is that 4 bits are used for identifying the performance index type, the 4th parameter length is 3 bytes, be used for representing the performance index value that specifically will report, the value of performance report frame (Value) field second the same with the usage of second and the 3rd parameter of value (Value) field of performance queries claim frame with the usage of the 3rd parameter (time measurement unit and performance index type).

According to method provided by the invention, it is characterized in that the traffic engineering that described new types of data link layer protocol provides powerful traffic management mechanism to realize network, method are that at first convection current is classified through all business of network, promptly to miscellaneous service (speech from the upper strata, the IP data, Digital Television, the ethernet mac frame, TDM circuit simulation signals etc.) carrying out priority classification is divided into the business of high priority and the business of low priority, with classification be positioned at two layers data-link layer address (source address sign indicating number and destination address sign indicating number) expression upper-layer service address (destination address and source address) simultaneously to business according to belonging to which country or geographic area, which area of certain country or geographic area, certain node in certain area, certain user of certain node carries out the classification of countries, thereby represents that with the L2 address of classification physical link port L2 address carries out the classification of countries to physical resource, distribute different band width in physical links to be used to transmit dissimilar business simultaneously, the miscellaneous service of the whole network of flowing through is mapped on the actual physical link according to different priority type and region classification, realizes the flow and the bandwidth resources of whole network are unified dispatching management and monitoring by the traffic management frame, specific as follows: at first to from data link layer---all business of the above level of DLP layer are classified, be divided into the business of high priority and the business of low priority, the business packet includes network managing control information (control frame) of high priority, traffic management information (traffic management frame), various real-time voice services (comprising fixing or mobile voice or video telephone), various real-time videos (Digital Television), real time business based on IP (IPv4/IPv6), PDH and SDH/SONET circuit simulation signal, the business of low priority are general IP data service, identify concrete various types of traffic with the business type field value in the DLP frame, the destination address sign indicating number and the source address sign indicating number of a classification in described new types of data link layer protocol (DLP) frame, have been defined, the destination address sign indicating number adopts identical structure with the source address sign indicating number, all by national code, domestic area code, station code and personal code work four parts are formed, and are used for identification service respectively to belong to which country or geographic area, which area in certain country or the geographic area, which node in certain area, which user of which intranodal, for IP operation, destination address sign indicating number and source address sign indicating number are represented the purpose IP address in the IP packet head and the forwarding equivalence class of source IP address respectively, the telephone number of representing both call sides for voice service destination address sign indicating number and source address sign indicating number respectively, represent the address of digital television signal transmitting terminal and receiving terminal respectively for Digital Television (digital video) business purpose address code and source address sign indicating number, for the ethernet mac frame, adopt the circuit such as the PDH of Time Division Multiplexing technology, business purpose address codes such as the circuit simulation signal of SDH/SONET and source address sign indicating number are represented the address of signal sending end and receiving terminal respectively, like this by data-link layer address to miscellaneous service (speech from the upper strata, data, video, Ethernet and TDM circuit simulation signal) carried out the classification of region, miscellaneous service according to different countries or geographic area, certain area in particular country or the geographic area, certain node in the area, certain user of certain node classifies, simultaneously whole physics is transmitted the data-link layer address (the source address sign indicating number of DLP frame) of one two layers of each node port (each light wave that comprises wavelength-division multiplex system) signs of network, and the different link of regulation is used to transmit business dissimilar and that lead to different regions, the bandwidth resources that whole physics is transmitted network are classified like this, some bandwidth is used to transmit important real time business such as speech and real-time video, some is used to transmit general IP data service, and some bandwidth link is used to transmit international business, and some bandwidth link is used to transmit business transprovincially, some bandwidth link is used to transmit local service, if and network break down allow to transmit the IP data link by the service occupation of high priority, by the traffic management frame of the present invention's definition the flow and the physical network bandwidth resources of whole network are monitored processing, network management system comprises a traffic engineering database, this data-base recording the link circuit resource distribution situation of whole network, flow through the type of service of network, the overall budget number, total flow, physical link speed, allow parameters such as maximum transfer rate, the present invention defines when the business type field value is set to binary value " 10000010 " in described new types of data link layer protocol frame (DLP frame) header, and what expression DLP frame encapsulated is traffic management information, corresponding data link layer protocol frame is the traffic management frame, the traffic management information employing type-length-value of traffic management frame (English is Type-Length-Value, TLV) structure, wherein, type field length is 8 bits, be used to refer to the type of traffic management frame, length field length is 8 bits, is used for length with byte form indicated value (Value) field, value (Value) field comprises concrete traffic management content frame, the usage of network management frame type field is as shown in table 5, and what represent when wherein type field value is binary " 00000001 " among the traffic management frame TLV that traffic management frame payload carries is link traffic flow attribution information, and its value (Value) field contents comprises four parameters, first parameter is a node address, length is 8 bytes, and second parameter is type of service, is used for expression through the type of service under certain node flow bag (grouping), length is 1 byte, the service class offset of dissimilar business determines that by table 1 the 3rd parameter length is that 1 byte is used for identifying the measuring parameter type that flows through certain node link flow, and wherein binary value is peak rate (unit is a bits per second) for " 00000001 " expression flow measurement parameter type, binary value is Mean Speed (unit is a bits per second) for " 00000010 " expression flow measurement parameter type, binary value is that " 00000011 " expression flow measurement parameter type is maximum bag (grouping) number (unit is the bag per second), and binary value is average packet (grouping) number (unit is the bag per second) for " 00000100 " expression flow measurement parameter type, and binary value is peak value burst length (unit is a byte) for " 00000101 " expression flow measurement parameter type, binary value is agreement burst length (unit is a byte) for " 00000110 " expression flow measurement parameter type, binary value is burst excess length (unit is a byte) for " 00000111 " expression flow measurement parameter type, and other values keep to give in the future to be used, and the 4th parameter length is the value that 4 bytes are used for identifying concrete various flows, the Resource Properties of representing various physical links when type field value is binary system " 00000100～00100111 " among the traffic management frame TLV, the types value of various concrete links is as shown in table 5, and the source attribute values of various physical links includes four parameters, and first parameter is a node address, length is 8 bytes, second parameter is type of service, is used for expression through the type of service under certain node flow bag (grouping), and length is 1 byte, the service class offset of dissimilar business is determined by table 1, the 3rd parameter length is that 1 byte is used for identifying the measuring parameter type that flows through certain node link flow, and wherein binary value is peak rate (unit is a bits per second) for " 00000001 " expression flow measurement parameter type, and binary value is Mean Speed (unit is a bits per second) for " 00000010 " expression flow measurement parameter type, binary value is that " 00000011 " expression flow measurement parameter type is maximum bag (grouping) number (unit is the bag per second), binary value is average packet (grouping) number (unit is the bag per second) for " 00000100 " expression flow measurement parameter type, and binary value is peak value burst length (unit is a byte) for " 00000101 " expression flow measurement parameter type, and binary value is agreement burst length (unit is a byte) for " 00000110 " expression flow measurement parameter type, binary value is burst excess length (unit is a byte) for " 00000111 " expression flow measurement parameter type, other values keep to give in the future to be used, and the 4th parameter length is the value that 4 bytes are used for identifying concrete various flows, and the number of frames value of DLP traffic management frame is used for identifying the sequencing that the traffic management frame sends, realize that sign DLP flow control management information sends the function of sequencing, the payload information field of DLP traffic management frame can comprise a plurality of traffic management TLV information, for convenience the realization (generally adopt 32 as present chip, requiring traffic management frame total length like this is the integral multiple of 32 bits) of chip of the present invention, the length that requires whole traffic management frame is the integral multiple of 32 bits, if originally DLP traffic management frame length is not the integral multiple of 32 bits, then behind traffic management TLV, fill processing with the byte that is 0 entirely, the length of filling identifies with the byte form with the filling length field of DLP traffic management frame.

The usage of table 5. traffic management frame type field

The binary value of type field	Usage
		00000000	Keep
00000001	The link traffic flow attribution

00000010	10Mbps ethernet link attribute
		00000011	100Mbps ethernet link attribute
00000100	10/100Mbps ethernet link attribute
		00000101	The gigabit ethernet link attribute
00000110	10Gb/s ethernet link attribute
		00000111	STM-0 SDH link attribute
00001000	STM-1/OC-3c SDH link attribute
		00001001	STM-4/OC-12c SDH link attribute
00001010	STM-16/OC-48c SDH link attribute
		00001011	STM-64/OC-192c SDH link attribute
00001100	STM-256/OC-768c SDH link attribute
		00001101	64 kilobits/second physical link attributes
00001110	1544 kilobits/second PDH link attributes
		00001111	2048 kilobits/second PDH link attributes
00010000	6312 kilobits/second PDH link attributes
		00010001	8448 kilobits/second PDH link attributes
00010010	34368 kilobits/second PDH link attributes
		00010011	44736 kilobits/second PDH link attributes
00010100	139264 kilobits/second PDH link attributes
		00010101	IEEE 802.11a link attribute
00010110	IEEE 802.11b link attribute
		00010111	IEEE 802.11g link attribute
00011000	IEEE 802.11h link attribute
		00011001	The GSM link attribute
00011010	IEEE 802.16a (2-11GHz) link attribute
		00011011	IEEE 802.16c (10-66GHz) link attribute
00011100	The WCDMA link attribute
		00011101	The TD-SCDMA link attribute
00011110	The CDMA2000 link attribute
		00011111	The DVB link attribute
00100000	The MPEG-1 link attribute
		00100001	The MPEG-2 link attribute
00100010	The MPEG-3 link attribute
		00100011	The isdn link attribute
00100100	The adsl link attribute
		00100101	The VDSL link attribute
00100110	Other xDSL link attributes
		00100111～11111111	Keep

With respect to the adaptation method of existing IP and PDH fusion, the present invention has following innovation:

(1) processing is simple, efficient.Existing three kinds of IP are connected solution with the point-to-point that belongs to of the adaptation method of PDH, in this network, each node all need be through a series of from three layers of ground floors to the, a series of complex process from the 3rd layer to ground floor again, at first extract the HDLC frame from the PDH frame that is arranged in physical layer, perhaps LAPS frame or gfp frame, and then from HDLC frame extraction PPP frame, extract the IP bag from the PPP frame, perhaps extract the IP bag from the LAPS frame or from gfp frame, utilize Routing Protocol each IP bag to be transmitted processing then according to the purpose IP address in the IP packet head, according to different routes the IP bag is forwarded on the different links again after handling, determine the IP bag is forwarded to behind certain bar link the IP bag to be encapsulated into respectively that PPP is encapsulated into the HDLC frame then or IP sealed to install to LAPS or IP sealed again to install in the gfp frame according to Routing Protocol, again corresponding HDLC frame or LAPS frame or gfp frame are encapsulated in the PDH frame payload field, this processing is obviously very complicated, and poor efficiency.In contrast, adopt method provided by the invention, can simplify processing greatly, realizing with DLP in the network of IP and the adaptive fusion of PDH, only need at the edge of network access point, classify in IP address (normally purpose IP address) according to the IP bag, form a forwarding equivalence class, then the forwarding equivalence class of IP bag is mapped in the destination address code field of DLP frame, the principle of classification of IP forwarding equivalence class is to be divided into level Four, be respectively national code, domestic area code, station code and personal code work, so only need in the access point single treatment, IP wraps in the network of the whole IP that realizes with DLP and the adaptive fusion of PDH subsequently only needs can realize the forwarding that IP wraps according to the destination address sign indicating number in the DLP frame header, and when handling according to national code, domestic area code, the sequential processes of station code and personal code work as long as one of discovery and this network node corresponding address sign indicating number are not inconsistent, stops to handle, directly transmit the great like this computational processing of simplifying network.

(2) provide particularly 50 milliseconds of protection switch functions of quick protective switch function.What IP network adopted because the PDH network does not have the network protection function yet is that Routing Protocol is transmitted processing to the IP bag; if the PDH network breaks down; must rely on IP oneself to recomputate route; the adaptation method of existing IP and PDH can not provide the quick protective switch function; this may cause packet loss on the one hand; be if with important business such as the real-time business of IP carrying on the other hand,, therefore be difficult to satisfy the requirement of real time business because the switching time reality of IP network in seconds.Adopt quick protective switch that method provided by the invention can realize IP network particularly 50 milliseconds of protections switch; because one aspect of the present invention provides Topology Discovery and 50 milliseconds of protection switch functions at 2 layers; the forwarding of the IP bag among one side the present invention is the high speed classification transmission that realizes according to forwarding equivalence class in addition; need not each IP bag is handled, thereby adopt the present invention to switch ability for IP network provides the carrier-class network protection.

(3) provide the traffic management function, the traffic engineering ability particularly is provided.Because what IP network adopted is that two big class Routing Protocols are the Route Selection that Interior Gateway Protocol and Exterior Gateway Protocol realize the IP bag, the adaptive mode of existing IP and PDH does not have the traffic engineering ability, even may cause having between two nodes many to connect link, but IP network may all transmit the IP bag by a link, it is congested to cause this link to produce, thereby cause packet loss, and this moment, other link was in idle condition.The invention provides the traffic engineering ability, the forwarding of IP bag is to transmit according to the IP forwarding equivalence class realization just of the destination address sign indicating number in the DLP frame, it is exactly the frame that is specifically designed to traffic management that DLP frame of the present invention has a kind of management frames, it can provide powerful traffic engineering ability, the generation of above-mentioned situation can not occur.

(4) business is carried out classification, have service quality to guarantee.Because the adaptation method of existing IP and PDH does not carry out any professional classification to the data business, everybody is the same, all has identical priority, causes this IP network not have service quality to guarantee.The present invention has carried out the classification of science to the business of network, one class is the important real time business that quality of service requirement is arranged, one class is the business of doing one's best, priority treatment real time business during processing, and the flow of this processing also need rely on traffic engineering to monitor, thereby guaranteed the service quality of network.

(5) can realize that all-optical wave-length exchanges or the circuit switching of virtual container level or PDH (Pseudo-synchronous Digital Hierarchy) interface particle level.Because what the adaptation method of existing IP and PDH adopted is the point-to-point connection processing, and must handle each packet, if network is an all-optical network, must carry out a series of light-electrical-optical conversion process so, can not realize full light exchange, the present invention is directed to the IP bag classifies, utilize forwarding equivalence class that the IP bag is transmitted processing, can be appointed as a class business (being the IP bag) for each wavelength and need not to carry out complicated light one an electric optical processing like this, different light waves can be appointed as different destination address sign indicating numbers or source address sign indicating number, specify an IP address class seemingly in this and the internet each grid interface, can directly realize full light exchange like this, in addition because to the affiliated country of IP bag foundation, the area, network node and particular user quaternary structure are classified, can arrange the distinct interface speed dissimilar business (packet) of carrying of PDH according to the flow of network like this thus realize direct circuit exchange according to traffic engineering based on different physical interface circuit particles.

(6) improve the robustness of network, reduced packet loss.For first kind of adaptive mode that promptly adopts PPP+HDLC and adopt LAPS, because what HDLC frame and LAPS frame adopted is that specified byte (0X7E) achieve frame is delimited, need carry out transparent processing to the IP bag, this mode has two defectives, the one, network security problem, those spiteful people only need payload information all is set to those specific two bytes (0X7D, 0X7E), and the flow of network will double so, gang up against if adopt, may cause network congestion; In addition, because these two kinds of adaptive modes all do not have error correction, if the frame delimiter byte occurs that wrong (theoretical probability that mistake occurs is 1/2 like this ⁸=1/256=0.00390625 promptly is about 3.9/1000ths), just may cause packet loss.The present invention has adopted BCH (31,16) sign indicating number is realized the demarcation of DLP frame, what adopt is the matching relationship achieve frame demarcation of frame length field and frame length check field, the actual use is that the frame length value changes, need not to carry out transparent processing, and when the upper strata does not have data to send, the filling usefulness of frame gap be special idle frame, the potential safety hazard of having avoided PPP+HDLC or LAPS adaptation method to bring like this.In addition, BCH (31,16) sign indicating number provides powerful error correcting capability, can entangle 3 random errors at most, the present invention recommends to carry out the correction process of 2 random errors, same under the situation of no correction process, it is 1/2 that PPP+HDLC and the frame of adopting the adaptive mode of LAPS are delimited the theoretical probability that mistake occurs ⁸=1/256=0.00390625 promptly is about 3.9/1000ths, is 1/2 and adopt the theoretical probability of makeing mistakes of the present invention ³⁰=1/1073741824=0.000000000931 is about 9.3/10000000000ths, great like this minimizing because frame is delimited the wrong packet loss that may bring.

(7) security performance of raising network.Adopt the IP network of existing three kinds of IP and PDH adaptation method can say without any safety.As everyone knows, present IP network is without any fail safe, and the IP packet can be by intercepting, replace because above-mentioned adaptation method only is that the IP bag is mapped in the PDH payload field, these adaptation methods to the safety that improves IP network without any help.The present invention provides powerful safety function from three aspects for IP network: the one, and utilize forwarding equivalence class to replace the IP address to realize the forwarding of IP bag, just utilize the IP address to its processing of classifying during processing, shielded real IP address like this at the edge access point; Two have provided a kind of encryption mechanism, can carry out encryption to the entire I P bag that comprises the IP address; Three have provided a kind of data authentication mechanism, can carry out authentication processing to original IP bag, generate a summary (being equivalent to a fingerprint) in company with sending, and can judge by the finger print information of identification IP bag whether the IP bag is revised by the people.Cryptographic algorithm and identifying algorithm can be to select flexibly in addition, determine by user's actual needs, and both can be the algorithm of standard, also can be the tailor-made algorithm of the tailor-made algorithm such as the military, financial institution, can reach the desirable security performance of user like this.

(8) realize the interconnected of IPv4 and IPv6 network.The adaptation method of above-mentioned three kinds of IP and PDH can be used for IPv4 and IPv6, can realize that promptly adaptive the and IPv6 of IPv4 and PDH and PDH's is adaptive, but because IPv4 and IPv6 are incompatible, and owing to above-mentioned three kinds of adaptive modes all need be handled each IP bag in network layer, adopt three kinds of above-mentioned adaptation methods, make that IPv4 and IPv6 network can not be compatible.Because what the present invention adopted is that forwarding equivalence class replaces the forwarding of IP address to the IP bag, only need to realize the forwarding of IP bag according to DLP destination address sign indicating number in network intermediate link, to IPv4 address and IPv6 address all is at the processing of classifying of different addresses, therefore can realize the compatibility of IPv4 and IPv6 network.

(9) integration of three networks of realization speech, data and video network.Adopt in the network of above-mentioned adaptation method, traditional voice service is what to be separated with the IP network business, and generally believe that now following unified public network will adopt packet-switch technology, these adaptation methods are for how realizing meeting in group and voice service, the aspects such as fusion that make packetized voice business and IP network are without any help, adopt method provided by the invention can realize the fusion of packet voice network and IP network, method is that the destination address sign indicating number or the source address sign indicating number of DLP frame represented the purpose IP address of IP bag and the forwarding equivalence class of source IP address respectively for the destination address sign indicating number or the source address sign indicating number of IP operation DLP frame, for voice service, this code is exactly the telephone number of calling both sides, by the voice signal digitlization, thereby the digital signal of periodic output certain-length realizes the packetizing of voice service in the DLP frame, numbers of calling and called parties in the destination address sign indicating number of DLP frame and the source address representation voice service is (for the calling party, the corresponding called phone number of destination address sign indicating number in the DLP frame, the corresponding calling telephone number of source address sign indicating number, packet for the callee, situation just conversely), realized the fusion of IP network and voice network so on the one hand, and this fusion is not that voice network is superimposed upon on the IP network, the strong point of two networks has been brought into play in this fusion, has abandoned some shortcomings of two networks simultaneously.

Description of drawings

Further specify characteristics of the present invention below in conjunction with accompanying drawing and example.

Fig. 1 is adopted service model (conception schematic diagram) by the present invention

Fig. 2 is used for the protocol stack structure schematic diagram that PDH (Pseudo-synchronous Digital Hierarchy) is transmitted the Internet data packets for the present invention

Fig. 3 is the protocol stack arrangement example schematic of networking of the present invention

The DLP data frame structure that is used to transmit the IP bag that Fig. 4 adopts for the present invention

The DLP control frame structure that Fig. 5 adopts for the present invention

The DLP traffic management frame structure that Fig. 6 adopts for the present invention

Fig. 7 delimits the finite state machine figure that mode adopted for the frame of DLP frame of the present invention

Destination address sign indicating number and source address code structure that Fig. 8 adopts for the present invention

The empty frame structure of DLP that Fig. 9 adopts for the present invention

Figure 10 is usefulness (X proposed by the invention ⁴³+ 1) schematic diagram of multinomial scrambler and descrambling code

Figure 11 is that IP bag of the present invention transmits network diagram

Figure 12 shows that traffic engineering schematic diagram of the present invention

Figure 13 is an exemplifying embodiment of the present invention

Figure 14 shows that and on the SDH ring, implement example of the present invention

The order of communication is first from left to right in all DLP frame block diagrams of the present invention's definition, then from top to bottom, at first transmit highest significant position in each byte, leftmost bit is highest significant position (MSB) in all block diagrams, rightmost bit is least significant bit (LSB), and the reserved word segment value is 0 in all block diagrams.

Figure 1 shows that service model that the present invention adopts (conception schematic diagram), in this framework, Physical layer is PDH, mainly comprise all kinds of high-orders and low order PDH passage, data link layer is the data link rules (english abbreviation is DLP) that the present invention defines, Internet is IP (comprising the 4th edition IPv4 of Internet Protocol and the 6th edition IPv6 of Internet Protocol), the present invention is not to existing physical-layer techniques, Internet and make any modification with the technology on upper strata, data link layer (DLP) is passed through four primitive to the service that Internet provides: data link-data-request (the English DL_DATA.request of being), data link-data-indication (English is DL_DATA.indication), data link-control-request (English is DL_CONTROL.request), data link-control-indication (English is DL_CONTROL.indication) realizes, wherein data link-data primitive provides the network control service for Internet provides data delivery service data link-control primitive, at transmitting terminal, if Internet has the IP bag to need to send, then call DL_DATA.request primitive, this primitive comprises a series of parameter, determined the value of the relevant field of DLP frame by the parameter of this primitive, at receiving terminal, when packet (IP bag) being arranged in the time of to be sent to Internet, call DL_DATA.indication primitive, utilize the parametric solution of this primitive to separate out each field value of DLP frame, if Internet needs data link layer that the control service is provided, call DL_CONTROL.request and DL_CONTROL.indication primitive, communicating by letter by two primitive between data link layer and Physical layer: physical link-request of data (PL_DATA.request) and physical link-indication (PL_DATA.indication) realize.

Figure 2 shows that the present invention is used for the protocol stack structure schematic diagram that PDH transmits the Internet data packets, wherein Fig. 2 (a) is depicted as the schematic diagram with PDH photoelectricity transmission section transmission PDH passage, two kinds of methods of putting into the PDH passage are arranged below DLP, a kind of is that the DLP frame is put into the PDH low order channel, the mode that again low order channel is interleave with byte is advanced higher order path by the pattern of PDH is multiplexing, order by the photoelectricity transmission section transmits again, then extract the DLP frame by opposite order at receiving terminal, another kind is that the DLP frame is directly shone upon higher order path, order according to the photoelectricity transmission section transmits again, then extracts the DLP frame by opposite order at receiving terminal. Fig. 2 (b) is depicted as the schematic diagram with SDH photoelectricity transmission section transmission PDH passage, the DLP frame is put into the PDH passage, again the PDH passage is shone upon into Lower Order Virtual Container or higher order virtual container, order according to SDH multiplexing section, regenerator section and photoelectricity transmission section transmits again, then extracts the DLP frame by opposite order at receiving terminal.

Fig. 3 is the protocol stack arrangement example schematic of networking of the present invention, be divided into two kinds of situations, in the situation shown in Fig. 3 (a), the inlet side and the protocol stack arrangement that goes out to hold each node of gateway of the LAN access IPoverPDH net of DLP agreement do not supported in its expression, wherein DLP represents the data link rules, EthernetPHY and EtherPHY represent ethernet physical layer, LLC presentation logic link control sublayer, MAC represents MAC sublayer, PDH represents PDH, LAN represents LAN, IPv4 represents Internet Protocol the 4th edition, IPv6 represents the Internet Protocol sixth version, TCP represents transmission control protocol, UDP represents UDP, IP represents Internet Protocol (general address), the fusion of " IP over PDH " expression Internet Protocol and PDH, at gateway, are furnished with simultaneously PDH and MAC two class physical interfaces, and that Internet remains IPv4/IPv6 is constant, but need not each IP bag is processed in the whole network subsequently, and at this moment the PDH link is classified, the PDH link of different rates is used for transmitting dissimilar IP bags, the IP that is used for such as the E1 link wraps with being sent to first, and the E3 link is used for being sent to the IP bag on second ground; For Fig. 3 (b) if shown in the situation LAN support the DLP agreement, between Internet (IP layer) or LLC and media access control sublayer, insert one deck DLP agreement, on LAN outlet gateway, can classify to the IP bag of output, only need to dispose one deck DLP agreement at LAN with the gateway that is connected of IP over PDH network, directly the DLP frame is encapsulated in the PDH frame, the IP over PDH network subsequently need not each node the IP bag is processed.

Figure 4 shows that the DLP data frame structure that is used for transmitting the IP bag that the present invention adopts, the DLP Frame is comprised of fields such as frame length (FL), frame length verification (FLC), R field (reserved field of 1 bit), business type field, topological field, secure fields, destination address code, source address code, extension header, filling length field, number of frames field, Security Parameter Index, payload field, padding data field, authentication data field and Frame Check Sequences, wherein Security Parameter Index, padding data field and authentication data field are options, determined by the authentication of adopting, AES, the order of communication is first from left to right in all block diagrams, then from top to bottom, at first transmit highest significant position (MSB) in each byte, leftmost bit in all illustration block diagrams is highest significant position, rightmost one is least significant bit (LSB), and the reserved word segment value in all block diagrams is 0.

Fig. 5 is the DLP Control signal frame that the present invention adopts, the DLP control frame is by frame length, frame length verification, R field (1 bit reserved field, be set to 0), the fields such as type of service, topological field, secure fields, destination address code, source address code, extension header, filling length field, number of frames, payload information field and Frame Check Sequence field form, wherein the field lengths such as frame length, frame length verification, R field (1 bit reserved field), type of service, topological field, secure fields, destination address code, source address code, number of frames are the same with the DLP Frame, the header field value is 0 (binary value is 00000000), the business type field value be the encapsulation of binary system " 10000001 " expression DLP payload field be control information, type-length-value (TLV) structure is adopted in control information.

Fig. 6 is the DLP traffic management frame structure that the present invention adopts, DLP traffic management frame is by frame length, frame length verification, R field (1 bit reserved field, be set to 0), the fields such as type of service, topological field, secure fields, destination address code, source address code, extension header, filling length, number of frames, payload information field and Frame Check Sequence field form, wherein the field lengths such as frame length, frame length verification, R field (1 bit reserved field), type of service, topological field, secure fields, destination address code, source address code, number of frames are the same with the DLP Frame, the header field value is 0 (binary value is 00000000), the business type field value is that binary system " 10000010 " expression DLP payload is traffic management information, and traffic management information adopts type-length-value (TLV) structure.

Fig. 7 is the finite state digraph that the frame key-machine of DLP frame of the present invention adopts, the frame based on header error verification (english abbreviation is HEC) that the DLP frame of the present invention definition adopts similar ITU-T to adopt among the ATM of definition in I.432.1.1 advising is delimited describing method, the 31 initial bits that utilization receives are that FL and FLC field bit consist of BCH (31,16) encoding relation of code is realized the frame demarcation of DLP frame, the DLP frame is delimited the description algorithm and is determined by finite state machine figure, the finite state machine workflow diagram is as follows: (1) is in the search attitude, DLP processes 31 bits that receive is pursued FL and the FLC relation that correct format is sought in the bit search, in this state, BCH code does not have the single-bit error of FL field and FLC field or 2 bit error correction functions, in case in 31 bits that receive, find correct candidate FL and FLC matching relationship value, can suppose and determine a correct DLP frame, reception ﹠ disposal enters presynchronization (the English PRESYNC of being) state, (2) in the PRESYNC attitude, DLP processes by searching for frame by frame to process and realizes the demarcation of DLP frame, pursue FL and the correct matching value of FLC that the bit search is found according to previous step, can suppose and search a correct DLP frame, then can determine FL and the FLC field value of next frame according to each field relation of this frame, and determine according to their relation whether they mate, and then next frame, in case determine that continuously (DELTA is a parameter to DELTA, it be one greater than 0 positive integer) individual correct DLP frame, the DLP reception ﹠ disposal enters synchronous state, otherwise, if the FL of a frame and FLC field value do not mate subsequently, enter the search attitude, at this moment, BCH code does not have single-bit error or the 2 bit error correction functions to FL field and FLC field. Enter synchronous state from the search attitude and need to search continuously DELTA+1 correct DLP frame, (3) at synchronous state, DLP processes the beginning that can determine next DLP frame by the FL of a frame and FLC field relation, then can realize parsing one by one, FLC has single-bit error or 2 bit mistake error corrections in this state, if a plurality of bits (surpassing 2 bit mistakes) mistake occurs, then frame is delimited and was lost efficacy, framing processing enters the search attitude, and send client server Signal Fail (english abbreviation is SSF) indication for client's adaptation processing, (4) empty DLP frame participates in frame and delimits processing, and abandon subsequently the sky frame, it is relevant with the DELTA value that the DLP frame is delimited the robustness of processing, and the present invention advises that the DELTA value is 1.

Fig. 8 is destination address code and the source address code structure that the present invention adopts, destination address code and source address code are used for respectively representing the forwarding equivalence class of purpose IP address and source IP address in the IP packet head, the coding structure of source address code is identical with the destination address code, the length of destination address code (english abbreviation is DAC) is 64 bits (8 eight hytes), be used for identifying the purpose forwarding address of DLP frame in the network that adopts DLP, the DAC field is comprised of following 4 parts: national code field, domestic area code, station code, personal code work. Wherein: the national code field length is 16 bits (2 eight hytes), this yard is the first order forwarding label of IP bag, it can also can be the value of other appointment for the international long-distance area code in the existing telephone coding system that the present invention defines this field value, domestic area code field length is 16 bits, this yard is the second level forwarding label of IP bag, it can be that national distance area code in the existing telephone coding system also can be the value of other appointment that the present invention defines this field value, the station code field is 16 bits, identify the service code of certain network node, this yard is the third level forwarding label of IP bag, and occurrence is specified by Virtual network operator or Internet service provider; The personal code work field length is 16 bits, indicates certain user's service code, and this yard is the fourth stage forwarding label of IP bag, and concrete UC value is specified by Virtual network operator or Internet service provider.

Fig. 9 is the empty frame structure of DLP that the present invention adopts, the purpose that sends empty frame is in order to regulate two internodal speed, the adjacent node that it sends to from a node that it links to each other, neighbor node is not forwarded to any other place to it after receiving the sky frame, directly it is abandoned, the empty frame of DLP is by frame length field (16 bit), frame length check field (15 bit), reserved field (the R field that length is 1 bit, be set to 0), including only station code and personal code work field length is the source address code composition of 4 bytes.

Figure 10 shows that usefulness (X proposed by the invention⁴³+ 1) schematic diagram of multinomial scramble and discramble code, D1 represents the 1st to 43 of register among the figure to D43, the part that empty frame fences up represents 43 bit shift registers, garden circle part represents an XOR circuit, according to the logical relation among the figure, at transmitting terminal, can finish the scrambler function to the DLP frame from " the data flow input before the scrambler " to " the data flow output behind the scrambler "; At receiving terminal, can finish the descrambling code function from " input of scrambler data flow " to " the data flow output behind the descrambling code "; The shift register that also can from D1 to D43, be shifted, but corresponding logical relation also should adjust.

Figure 11 is that IP bag of the present invention transmits network, dark round spot represents fringe node among the figure, white circle represents core node, behind the network edge node access user, according to the purpose IP address in the IP packet head and source IP address according to the processing of classifying of the country under the IP address, which area, which node, and sorted forwarding equivalence class value is filled into destination address code and source address code field, simultaneously whole IP bag is mapped in the payload field of DLP frame, subsequently, whole network only need utilize the forwarding of the destination address code realization DLP frame in the DLP frame header; During forward process, at first sequentially search the national code in the DLP frame destination address code, domestic area code, station code, personal code work, the present invention adopts longest match principle that the DLP frame is carried out forward process, in case find that a certain field value of destination address code of DLP frame is different from local node corresponding field value, then stop search, directly transmit this packet.

Figure 12 shows that traffic engineering schematic diagram of the present invention, there are many transfer paths in Guangzhou among the figure to Beijing, in normal circumstances, Guangzhou is through Guangzhou-Wuhan-path, Pekinese to Pekinese's flow, shown in solid arrow line among the figure, if but Guangzhou-Wuhan-circuit appearance in Beijing is congested, and Guangzhou-Shanghai-Pekinese's line idle, can transfer to service traffics on Guangzhou-Shanghai-Beijing circuit this moment, shown in the dotted arrow line among the figure.

Embodiment

Imagination proposed by the invention is mainly used in user side integrated access equipment (but access device of any or several business in the incoming voice, data, video traffic), various router (comprise insert switch router, the edge inserts switch router or converges switch router, core or high-end switch router), the high/medium/low end Ethernet switch based on packet switch, multi-service transport platform and any equipment that interconnects relevant with the internet, can be used for converging to core network from being linked on network topology structure.Accompanying drawing 13 is one of exemplifying embodiment of the present invention, black circles is represented fringe node (aggregation node) among the figure, white expression core node, solid line is represented whole SDH link, dotted line is represented the sublink of PDH interface, on the backbone network node of nationwide SDH backbone network or province's network, insert core router, on edge (converging) node, insert edge router (convergence router or switch), after fringe node inserts IP, the forwarding in whole network subsequently of IP bag is handled only to be needed to get final product according to the processing of the destination address in the DLP frame header, and according to the principle of traffic engineering, can classify to PDH speed or optical wavelength in the network, be equivalent to specify a L2 address to all kinds of interface rates or optical wavelength, so different classes of IP bag is mapped on different the PDH interface or optical wavelength, directly realize the exchange of PDH interface or optical wavelength, need not each IP bag is handled.Figure 14 shows that and on existing SDH ring, implement example of the present invention, the SDH ring can be the SDH ring on the national backbone network among the figure, it also can be the SDH ring on province's net or the single site network, on these SDH rings the PDH interface is arranged all, the adaptation method that internet that the present invention proposes on this ring and PDH (Pseudo-synchronous Digital Hierarchy) merge can have three kinds of execution modes, one of them is to be used in the dropinsert MUX (ADM represents dropinsert MUX among the figure) on the SDH ring to go up by the IP over PDH technology that proposes in enforcement the present invention on this equipment thereby the directly interconnected of Ethernet interface realization and local area network (LAN) is provided on this equipment, thereby being the IP over PDH technology of implementing the present invention's proposition on the Ethernet switch, the second way on Ethernet switch, provide the PDH interface to realize the directly interconnected of Ethernet local area network (LAN) and ADM equipment, the third mode is to implement on special router, by on router, implementing the IPoverPDH technology that the present invention proposes, this router has comprised Ethernet interface and PDH interface, wherein Ethernet interface and local area network (LAN) are directly interconnected, the PDH interface is connected with the PDH interface of ADM equipment, thereby has realized that local area network (LAN) and ADM's is interconnected.

Claims (13)

1; a kind of adaptation method that is used for internet and PDH (Pseudo-synchronous Digital Hierarchy) fusion; it is characterized in that; by at the data link layer protocol of between the IP of network layer and PDH (Pseudo-synchronous Digital Hierarchy) PDH, introducing one deck data link rules by name in physical layer; the english abbreviation of data link rules is DLP; DLP is by frame length field; the frame length verification; business type field; the topology field; secure fields; the destination address code field; the source address code field; header field; fill length field; the number of frames field; the Security Parameter Index field; payload field; the Frame Check Sequence field is formed; utilize the data link layer protocol realization internet of described definition and the fusion of PDH on the one hand; solve the deficiency and the defective of the network existence of existing internet and PDH fusion; realize comprising speech by the data link layer protocol that utilizes described definition on the other hand; the IP data; digital video; the ethernet mac frame; the multi-service encapsulation of TDM circuit simulation signal; realize that with the data link layer protocol of described definition Internet Protocol is the directly adaptive of IP and various physical layer facilities; by realizing voice service and the direct transmission of digital video on physical link with DLP; the destination address sign indicating number and the source address sign indicating number that utilize DLP to provide are realized IP; thereby two layers of voice service and digital television business are transmitted and exchange in the unified whole communication network of data link layer; realize telephone network; the integration of three networks of internet and cable TV network; make existing telephone network; internet and cable TV network are smoothly transitted into the unified carrier class public network that adopts packet-switch technology of future generation; IP; voice service; the digital video service unification is to the packet communication network that adopts the DLP technology; IP operation only is the part of upper-layer service of the data link layer protocol carrying of described definition; with the data link layer protocol of described definition as realizing Internet Protocol IP and the fusion of PDH (Pseudo-synchronous Digital Hierarchy) and adaptive data link layer protocol; between data link layer and network layer communicate by letter and physical layer all realizes by primitive with communicating by letter of data link interlayer; utilize the classification of the data link layer protocol definition of described definition; the destination address sign indicating number of compatible existing telephone number system and source address sign indicating number are represented the purpose IP address of IP bag and the forwarding equivalence class of source IP address; the forwarding equivalence class that utilizes IP bag promptly replaces the three layers of IP address to realize the two layers of forwarding and the exchange of IP bag as the address of the data link layer protocol of described definition as two layers data-link layer address; the security mechanism of utilizing the data link layer protocol of described definition to provide guarantees that IP wraps in the safety in the network transport process; the Frame that defines in the data link layer protocol with described definition sends the miscellaneous service data from the upper strata; the control frame that defines in the data link layer protocol with described definition is realized the Topology Discovery that comprises of network; 2 layers of protection are switched; fault management; configuration management and performance management are in interior network control management, and the traffic management frame that defines in the data link layer protocol with described definition is realized the traffic engineering management of network.

2; method according to claim 1; it is characterized in that; the IP that realizes network layer with the data link layer protocol of described definition is directly adaptive with the various physical layer facilities that comprise PDH; the service that data link layer provides for network layer is adopted and is not confirmed formula information transfer service pattern; the data that send are not done any affirmation formula operation; data link layer is passed through " data link-data-request; English is DL_DATA.request " for the service that network layer provides; " data link-data-indication; English is DL_DATA.indication "; " data link-control-request; English is DL_CONTROL.request "; " data link-control-indication; English is DL_CONTROL.indication " 4 primitive are realized; physical layer is that two primitive are passed through in the service that the DLP layer provides for data link layer: " physical link-data-request; English is PL_DATA.request "; " physical link-data-indication; English is PL_DATA.indication " realize; at transmitting terminal; when the IP bag needs to send; call data link-data-request DL_DATA.request primitive; this primitive comprises series of parameters; these parameters are used for determining each field of data link layer protocol frame header of described definition and the value of payload field; at receiving terminal; when the data link layer protocol client entity of described definition will receive data; the data link layer protocol entity of described definition activates DL_DATA.indication primitive; the value of each field of data link layer protocol frame of the accepting state of this primitive indication incoming frame and the described definition of input; if network layer needs the data link layer protocol of described definition that network control function is provided; call data link-control primitive: " data link-control-request DL_CONTROL.request " and " data link-control-indication DL_CONTROL.indication " primitive; these two primitive comprise a series of command code and parameter; provide by these two primitive and to comprise discovering network topology; 2 layers of protection are switched; configuration management; fault management; performance management is at interior network control function; at transmitting terminal; need be when data link layer sends to physical entity as data; the data link layer protocol entity of described definition activates PL_DATA.request primitive; will be when physical entity sends to the data link layer protocol entity of described definition at receiving terminal as data; activate PL_DATA.indication primitive, each primitive semantic as follows:

(1)DL_DATA.request(

DestinationAddressCode，

SourceAddressCode，

DLPServiceData，

FrameLength，

ServiceType，

NetworkTopology，

Security，

FrameSequenceNumber，

SPI)

DL_DATA.request primitive contains 9 parameters, the connotation of each parameter is respectively: DestinationAddressCode represents the destination address sign indicating number, this parameter is determined the forwarding equivalence class that IP wraps according to the purpose IP address that sends in the IP packet head, with the destination address code word segment value that generates in the data link layer protocol frame header that sends described definition, SourceAddressCode represents the source address sign indicating number, this parameter is used for determining the forwarding equivalence class that IP wraps according to the source IP address that sends in the IP packet head, with the source address code word segment value that generates in the data link layer protocol frame header that sends described definition, the client signal that DLPServiceData indicates to send is an entire I P bag, with generating payload word segment value in the data link layer protocol frame that sends described definition, the total length of the data link layer protocol frame of the definite described definition that will send of FrameLength parameter, the ServiceType parameter is indicated the type of service of the data link layer protocol client layer signal of described definition, it is with generating business type field value in the data link layer protocol frame header that sends described definition, the Security parameter indicates whether the data link layer protocol client signal of described definition is encrypted, authentication processing, the data link layer protocol entity of described definition determines to send security word segment value in the data link layer protocol frame header of described definition with it, the indication of FrameSequenceNumber parameter sends the number of frames FSN of data link layer protocol frame, the data link layer protocol entity of described definition is determined FSN field value in the data link layer protocol frame header of the described definition that sends with it, the NetworkTopology parameter is indicated the network topology of the data link layer protocol network node of described definition, the data link layer protocol entity of described definition sends topological field value in the data link layer protocol frame header of determining described definition with it, SPI is the english abbreviation of Security Parameter Index, the SPI parameter is an option, be used for determining the IP bag is encrypted, the security association of setting up at the communication two ends during authentication processing, be used for determining the Security Parameter Index SPI field value in the data link layer protocol frame of described definition

(2)DL_DATA.indication(

DestinationAddressCode，

SourceAddressCode，

DLPServiceData，

ServiceType，

FrameLength，

ReceptionStatus，

NetworkTopology，

Security，

FrameSequenceNumber，

SPI)

DL_DATDA.indication primitive parameter semantic as follows: DestinationAddressCode represents the destination address sign indicating number, destination address code word segment value in the data link layer protocol frame header of the described definition of the definite input of this parameter, SourceAddressCode represents the source address sign indicating number, source address code word segment value in the data link layer protocol frame header of the described definition of the definite input of this parameter, DLPServiceData determines the data link layer protocol frame payload word segment value of the described definition of input, the accepting state of ReceptionStatus indication incoming frame, if the Frame Check Sequence FCS field of incoming frame does not make a mistake, the value of ReceptionStatus is FCS_ERROR_FREE, otherwise, if incoming frame makes a mistake, then the ReceptionStatus value is FCS_ERROR, the business type field value of the data link layer protocol frame of the described definition of ServiceType parameter indication input, the FrameLength parameter is determined the total length of the data link layer protocol frame of the described definition of input, whether the data link layer protocol frame of the described definition of Security parameter indication input is encrypted, authentication processing, the Security field value of the data link layer protocol frame of the described definition of Security parameter indication input, the FrameSequenceNumber parameter is indicated the FSN of described incoming frame, topological field value in the data link layer protocol frame of the described definition of NetworkTopology parameter indication input, the SPI parameter is used to refer to the Security Parameter Index field value of described incoming frame

(3) data link-control-request DL_CONTROL.request primitive

The form of data link-control-request DL_CONTROL.request primitive is a DL_CONTROL.request (command code; solicit operation ordered series of numbers table); wherein command code comprises the Topology Discovery request; english abbreviation is TOPOLOGY_DISCOVERY_REQ; 2 layers of protection switching request; english abbreviation is L2PS_REQ; configuring request; english abbreviation is CONFIGURATION_REQ; the fault inquiry request; english abbreviation is FAULT_INQUIRY_REQ; the performance queries request; english abbreviation is PERFORMANCE_INQUIRY_REQ; the concrete operations ordered series of numbers table of each command code is as follows: the solicit operation number of Topology Discovery request TOPOLOGY_DISCOVERY_REQ command code comprises the destination address sign indicating number; the source address sign indicating number; type of service; number of frames; Topology Discovery claim frame data; the solicit operation number of 2 layers of protection switching request L2PS_REQ command code comprises the destination address sign indicating number; the source address sign indicating number; type of service; number of frames; 2 layers of protection switching request frame payload data; the solicit operation number of configuring request CONFIGURATION_REQ command code comprises the destination address sign indicating number; the source address sign indicating number; type of service; number of frames; configuring request frame payload data; the solicit operation number of fault inquiry request FAULT_INQUIRY_REQ command code comprises the destination address sign indicating number; the source address sign indicating number; type of service; number of frames; fault inquiry claim frame payload data; the solicit operation number of performance queries request PERFORMANCE_INQUIRY_REQ command code comprises the destination address sign indicating number; the source address sign indicating number; type of service; number of frames; performance queries claim frame payload data; destination address sign indicating number in each operand; the source address sign indicating number; type of service; the implication of number of frames parameter is the same with data link-data-request primitive corresponding parameters implication

(4) data link-control-indication DL_CONTROL.indication primitive

The form of data link-control-indication DL_CONTROL.indication primitive is a DL_CONTROL.indication (command code; the tabulation of indication operand); wherein command code comprises Topology Discovery response indication; english abbreviation is TOPOLOGY_DISCOVERY_RESPONSE_IND; the response indication is switched in 2 layers of protection; english abbreviation is L2PS_RESPONSE_IND; the configuration response indication; english abbreviation is CONFIGURATION_RESPONSE_IND; fault inquiry response indication; english abbreviation is FAULT_INQUIRY_RESPONSE_IND; performance queries response indication; english abbreviation is PERFORMANCE_INQUIRY_RESPONSE_IND; the concrete operations ordered series of numbers table of each command code is as follows: the indication operand of Topology Discovery response indication TOPOLOGY_DISCOVERY_RESPONSE_IND command code comprises the destination address sign indicating number; the source address sign indicating number; type of service; number of frames; Topology Discovery response frame payload data; 2 layers of protection are switched response and are indicated the indication operand of L2PS_RESPONSE_IND command code to comprise the destination address sign indicating number; the source address sign indicating number; type of service; number of frames; the response frame payload data is switched in 2 layers of protection; the indication operand of configuration response indication CONFIGURATION_RESPONSE_IND command code comprises the destination address sign indicating number; the source address sign indicating number; type of service; number of frames; configuration response frame payload data; the indication operand of fault inquiry response indication FAULT_INQUIRY_RESPONSE_IND command code comprises the destination address sign indicating number; the source address sign indicating number; type of service; number of frames; fault inquiry response frame payload data; the indication operand of performance queries response indication PERFORMANCE_INQUIRY_RESPONSE_IND command code comprises the destination address sign indicating number; the source address sign indicating number; type of service; number of frames; performance queries response frame payload data; destination address sign indicating number in each operand; the source address sign indicating number; type of service; the implication of number of frames parameter is the same with data link-data-indication corresponding parameters implication

(5) physical link-request of data PL_DATA.request primitive

PL_DATA.request (Userdata), this primitive have only a parameter, and this parameter is a user data, and English is Userdata,

(6) physical link-data indication PL_DATA.indication primitive

PL_DATA.indication (Userdata), this primitive have only a parameter, and this parameter is a user data, and English is Userdata.

3, method according to claim 1, it is characterized in that, it is adaptive to realize that with the data link layer protocol of described definition internet and PDH (Pseudo-synchronous Digital Hierarchy) merge, physical layer is the PDH (Pseudo-synchronous Digital Hierarchy) interface of existing whole speed ranges, realization is based on the direct exchange of the circuit of PDH interface rate particle, and wherein all kinds of speed grade of PDH (Pseudo-synchronous Digital Hierarchy) are: 1544 kilobits/second, 2048 kilobits/second, 6312 kilobits/second, 8448 kilobits/second, 34368 kilobits/second, 44736 kilobits/second, 139264 kilobits/second.

4; method according to claim 1; it is characterized in that; data link layer protocol with described definition is realized speech; the integration of three networks of IP data and television network; it is to rely on this data link layer protocol frame to begin specific phase mutual correlation relation that the bit information in the certain-length constitutes most promptly to constitute certain specific coding and concern and realize that the frame of the data link layer protocol frame of described definition is delimited; frame length of definition in described data link layer protocol; English is Frame Length; the field of being abbreviated as FL is used for identifying with the byte form total length of this data link layer protocol frame; define a frame length verification; English is Frame Length Check; the field of being abbreviated as FLC is used for frame length field is carried out verification and carried out single-bit error or this particular verified encoding relation that 2 bit mistake correction process utilize these two field bit to constitute simultaneously realizes that the frame of data link layer protocol frame delimits; define a type of service; English is Service Type; the field of being abbreviated as ST is used for identifying the type of service of payload field encapsulation; thereby realize multiple services encapsulation; the type of service that regulation is different has different priority simultaneously; define a topological field; English is Networks Topology; the field of being abbreviated as NT is come the topological classification of marked network node; define a safety; whether English is encrypted the payload of encapsulation for the field of Security is used for identifying; authentication processing; the destination address sign indicating number of a classification of definition; English is DestinationAddress Code; be abbreviated as DAC and source address sign indicating number; English is Source Address Code; be abbreviated as two layers of destination address and source address that SAC identifies the encapsulation business data packet; define a number of frames; English is Frame Sequence Number; the field of being abbreviated as FSN is used for the transmission sequence of identification data link layer protocol frame; define an extension header; English is Extension Header; whether the field of being abbreviated as EH identifies carries out extension process to payload; defining one fills length field and is used for being illustrated in the byte form and need fills the length of filling when handling; define a Security Parameter Index; English is Security Parameter Index; the security association that the communication two ends were set up when the field of being abbreviated as SPI identified the data authenticated encryption handled; define a payload; English encapsulate miscellaneous service for the field of Payload from the upper strata; define a Frame Check Sequence; English is Frame Check Sequence; being abbreviated as the field of FCS comes the data link layer protocol frame of described definition is carried out verification; definition one class Frame sends the miscellaneous service data from the upper strata in the data link layer protocol frame of described definition; definition traffic management frame is realized the traffic engineering management of network; the definition control frame is realized the Topology Discovery that comprises of network; 2 layers of protection are switched; fault management; configuration management and performance management are in interior network control management; these three kinds of dissimilar frames are identified by the type field in the data link layer protocol frame of described definition; the order of message transmission is earlier from left to right in the DLP frame; then from top to bottom; at first transmit highest significant position in each byte; leftmost bit is a highest significant position; english abbreviation is MSB; rightmost is a least significant bit; english abbreviation is LSB; all reserved word segment values are 0; specific as follows: definition frame length FL field length is 16 bits; definition frame length check field FLC length is 15 bits; make FL and FLC field bit constitute BCH (31; 16) sign indicating number; BCH is the english abbreviation of BCH Bose-Chadhuri-Hocquengham's sign indicating number; this relation of utilizing the DLP frame realizes the frame demarcation of DLP frame and single-bit or 2 bit mistakes that FL occurs is carried out correction process; the generator polynomial of BCH (31,16) sign indicating number is G (x)=x ¹⁵+ x ¹¹+ x ¹⁰+ x ⁹+ x ⁸+ x ⁷+ x ⁵+ x ³+ x ²+ x+1, initialization value are 0, here x ¹⁵Corresponding highest significant position is the MSB position, x ⁰Corresponding least significant bit is the LSB position, it is that the specific coding that FL field and FLC field constitute concerns the demarcation that realizes the DLP frame that the DLP frame utilizes its 31 bits that begin most, the DLP frame is delimited process and is realized according to finite state machine, finite state machine comprises three states: search, English is the HUNT attitude, the presynchronization attitude, English is PRESYNC, synchronous state, English is SYNC, the finite state machine workflow diagram is as follows: (1) is in the search attitude, DLP handles 31 bits that receive is pursued FL and the FLC relation that correct format is sought in the bit search, in this state, BCH code does not have the single-bit error of FL field and FLC field or 2 bit error correction functions, in case in 31 bits that receive, find correct candidate FL and FLC matching relationship value, can suppose and determine a correct DLP frame, receive to handle and enter the presynchronization presync state, (2) in the PRESYNC attitude, DLP handles by searching for frame by frame to handle and realizes the demarcation of DLP frame, pursue FL and the correct matching value of FLC that the bit search is found according to previous step, can suppose and search a correct DLP frame, can determine the FL and the FLC field value of next frame then according to each field relation of this frame, and determine according to their relation whether they mate, and then next frame, in case determine DELTA correct DLP frame continuously, DELTA is a parameter, it be one greater than 0 positive integer, DLP receives to handle and enters synchronous state, otherwise, if the FL of a frame and FLC field value do not match subsequently, enter the search attitude, at this moment, BCH code does not have the single-bit error of FL field and FLC field or 2 bit mistake error corrections, enter synchronous state from the search attitude and need search DELTA+1 correct DLP frame continuously, (3) at synchronous state, DLP handles the beginning of determining next DLP frame by the FL of a frame and FLC field relation, realize the parsing of a frame one frame then, FLC has single-bit error or 2 bit mistake error corrections in this state, if taking place, a plurality of bit mistakes promptly surpass 2 bit mistakes, then frame is delimited and was lost efficacy, framing is handled and is entered the search attitude, and send client server Signal Fail SSF indication for client's adaptation processing, (4) the empty frame of DLP participates in frame and delimits processing, and abandon the sky frame subsequently, it is relevant with the DELFA value that the DLP frame is delimited the robustness of handling, the DELTA value is 1, in the FLC back is that the reserved field that a length is 1 bit gives over to use in the future, this field is set to 0 always, definition business type field length is 8 bits, can discern 2 altogether ⁸=256 kinds of types of service; Wherein highest significant position is that what represented in 0 o'clock to encapsulate is that the general data business of low priority is common IP data service; Highest significant position is to represent that the business of DLP payload field encapsulation was the real time business that comprises phone, real-time video traffic of high priority at 1 o'clock; The priority of DLP Business Processing order from high to low is followed successively by: control frame＞traffic management frame＞real time business＞IPv4/IPv6 data service; The business of high priority is at first processed in the formation of DLP network processes; The usage of business type field is as shown in table 1

The usage of table 1. business type field

The binary value of business type field Usage 00000000～00000011 Keep 00000100 IP v4 data 00000101 Mobile IP v4 data 00000110 IP v6 data 00000111 Mobile IP v6 data 00001000～00111111 Keep and give other data, services 01000000 The 10Mbps Ethernet 01000001 The 100Mbps Ethernet 01000010 The 10/100Mbps Ethernet 01000011 Gigabit Ethernet 01000100～01111111 Keep 10000001 Control frame 10000010 The traffic management frame 10000011 Fixedly local telephony service in real time 10000100 Real-time fixedly National calls business

10000101 Real-time fixedly international long-distance telephone business 10000110 In real time fixing local visual telephone service 10000111 Real-time fixedly national distance visual telephone service 10001000 Real-time fixedly international long-distance visual telephone service 10001001 Landline telephone is called out local mobile service in real time 10001010 Landline telephone is called out mobile National calls business in real time 10001011 Landline telephone is called out international mobile long-distance telecommunications service in real time 10001100 Landline telephone is called out local mobile video telephone business in real time 10001101 Landline telephone is called out mobile national distance visual telephone service in real time 10001110 Landline telephone is called out the international long-distance visual telephone service that moves in real time 10001111 Move domestic voice service in real time 10010000 Move international voice service in real time 10010001 Move domestic visual voice service in real time 10010010 Move international visual voice service in real time 10010011 Real-time video traffic, the broadcast type television services 10010100 Real-time video traffic, the unicast type television services 10010101 Real time business based on IP v4 10010110 Real time business based on IP v6 10010111 Real time business based on mobile IPv 4 10011000 Real time business based on mobile IP v 6 10011001 G.702PDH circuit emulation service: asynchronous circuit 1544 kilobits/second 10011010 G.702PDH circuit emulation service: asynchronous circuit 2048 kilobits/second 10011011 G.702PDH circuit emulation service: asynchronous circuit 6312 kilobits/second 10011100 G.702PDH circuit emulation service: asynchronous circuit 8448 kilobits/second 10011101 G.702PDH circuit emulation service: asynchronous circuit 34368 kilobits/second 10011110 G.702PDH circuit emulation service: asynchronous circuit 44736 kilobits/second 10011111 G.702PDH circuit emulation service: synchronous circuit 1544 kilobits/second 10100000 G.702PDH circuit emulation service: synchronous circuit 2048 kilobits/second 10100001 G.702PDH circuit emulation service: synchronous circuit 6312 kilobits/second 10100010 G.702PDH circuit emulation service: synchronous circuit 8448 kilobits/second 10100011 G.702PDH circuit emulation service: synchronous circuit 34368 kilobits/second 10100100 G.702PDH circuit emulation service: synchronous circuit 44736 kilobits/second 10100101 G.702PDH circuit emulation service: 139264 kilobits/second 10100111 G.707SDH circuit emulation service: C-11,1648 kilobits/second 10101000 G.707SDH circuit emulation service: C-12,2224 kilobits/second 10101001 G.707SDH circuit emulation service: C-2,6832 kilobits/second 10101010 G.707SDH circuit emulation service: C-3,48384 kilobits per seconds 10101011 G.707SDH circuit emulation service: C-4,149760 kilobits per seconds 10101100 G.707SDH circuit emulation service: VC-11,1664 kilobits per seconds 10101101 G.707SDH circuit emulation service: VC-12,2240 kilobits/second 10101110 G.707SDH circuit emulation service: VC-2,6848 kilobits/second 10101111 G.707SDH circuit emulation service: VC-3,48960 kilobits/second 10110000 G.707SDH circuit emulation service: VC-4,150336 kilobits/second 10110001 G.707SDH circuit emulation service: TU-11,1728 kilobits per seconds 10110010 G.707SDII circuit emulation service: TU-12,2304 kilobits per seconds

10110011 G.707SDH circuit emulation service: TU-2,6912 kilobits per seconds 10110100 G.707SDH circuit emulation service: TU-3,49152 kilobits per seconds 10110101 G.707SDH circuit emulation service: AU-3,50304 kilobits per seconds 10110110 G.707SDH circuit emulation service: AU-4,150912 kilobits per seconds 10110111 G.707SDH circuit emulation service: STM-0,51480 kilobits/second 10111001 G.707SDH circuit emulation service: STM-1/OC-3c, 155520 kilobits/second 10111010 G.707SDH circuit emulation service: STM-4OC-12c, 600080 kilobits/second 10111011 G.707SDH circuit emulation service: STM-16 ,/OC-48c 2488320 kilobits/second 10111100 DVB, MPEG-1 transmits bit stream 10111101 DVB, MPEG-2 transmits bit stream 10111110 DVB, MPEG-4 transmits bit stream 10111111～11111111 Keep and give other real time business

Defining topological field length is 4 bits; wherein binary value " 0001 " is represented bus structures; binary value " 0010 " expression star structure; binary value " 0011 " expression tree topology; binary value " 0100 " expression ring topology; binary value " 0101 " expression mesh topology; other values keep to give in the future to be used; for ring topology and network topology; DLP provides 50 milliseconds of protection switch functions; definition secure fields length is 4 bits; wherein binary value " 0000 " expression is not carried out any encryption to upper-layer service; authentication processing; binary value is represented carry out encryption from the business datum on upper strata for " 0001 "; binary value " 0010 " expression is carried out authentication processing to the business datum from the upper strata; binary value " 0100 " expression is to encrypting and authentication processing from the business datum on upper strata; other values keep in the future to be used; definition destination address code length is 64 bits; definition source address code field length is 64 bits; the destination address sign indicating number adopts identical hierarchy with the source address sign indicating number; all by national code; English is Country Code; be abbreviated as CC; domestic area code; English is National Region Code; be abbreviated as NRC; station code; English is NodeAreaCode; be abbreviated as NAC and personal code work; English is User Code; being abbreviated as UC4 field forms; each field length is 16 bits; wherein national code is represented the first order forwarding label of upper-layer service; domestic area code is represented the second level forwarding label of upper-layer service, and station code is represented the third level forwarding label of upper-layer service, and personal code work is represented the fourth stage forwarding label of upper-layer service; definition header field length is 8 bits; wherein binary value does not have extension header for " 00000000 " expression, and other values keep in the future to be used, and it is 8 bits that length field length is filled in definition; be used for identifying the length that the DLP payload field is filled with the byte form; definition frame sequence-number field length is 16 bits, is used for the IP bag that sends is carried out sequence mark, and this field value carries out sequence mark since 0 to the DLP frame that sends; up to maximum; if FSN reaches maximum, send the value that processor is removed register, and count again since 0; send to guarantee that the DLP frame can be transmitted according to correct order; receive and handle; FSN also provides anti-playback simultaneously, and definition Security Parameter Index field length is 16 bits, and this field is optional; its value is arbitrarily; be used in combination the security association that identifies uniquely under this DLP frame with DLP destination address sign indicating number, English is Security Association, is abbreviated as SA; wherein the SPI value is that 0 reservation is given local; specific implementation is used; metric 1～255 is kept to using in the future by IANA, and IANA is the english abbreviation of InternetAssigned Numbers Authority mechanism, and other values are determined according to the encrypting and authenticating algorithm of employing by communicating pair; definition payload field length is 0～65535 byte; be used for encapsulating the entire I P bag from network layer, definition padding data field length is 0～255 byte, and the padding data field is optional; the encryption of occurrence and employing; identifying algorithm is relevant; the tool value determines that by the encrypting and authenticating algorithm define the verify data that generates when an authentication data field is deposited authentication processing, authentication data field also is optional; the authentication data field value is relevant with the identifying algorithm of employing; its value determines that by concrete identifying algorithm definition frame verification sequence FCS field length is 32 bits, is used for the payload of part header fields content and encapsulation in the data link layer protocol frame of described definition is carried out verification; FCS verification scope comprises: first bit of business type field begins from the DLP frame; until the ending of DLP frame specifically comprises business type field; the topology field; secure fields; the destination address sign indicating number; the source address sign indicating number; extension header; fill length field; number of frames; Security Parameter Index; payload; padding data; the authentication data field bit stream carries out checking treatment, and checking algorithm adopts the CRC-32 of IEEE 802.3 definition: generator polynomial is G (x) x ³²+ x ²⁶+ x ²⁶+ x ²³+ x ²²+ x ¹⁶+ x ¹²+ x ¹¹+ x ¹⁰+ x ⁸+ x ⁷+ x ⁵+ x ⁴+ x ²+ x ¹+ 1, here, x ³²Corresponding MSB position, and x ⁰Corresponding LSB position is if DLP frame generation fcs error abandons the DLP frame that makes a mistake, if some field value can not be discerned, fcs error perhaps occurs, then think invalid data link layer protocol frame, invalid frame will be dropped, do not notify transmit leg, also do not produce any action, invalid frame comprises:

(1) received frame generation fcs error is the unmatched DLP frame of FCS

(2) received frame length is less than the frame of 30 bytes

(3) frame that can not discern of business type field

(4) frame that can not discern of other fields of header,

If network layer does not have the IP bag to need to send, need fill processing at the DLP frame gap, promptly send empty frame, the purpose that sends empty frame is in order to regulate two internodal speed, empty frame sends to its adjacent nearest node from a node, neighbor node is not forwarded to any other place to it after receiving the sky frame, directly it is abandoned, do not notify transmit leg yet, the content of the empty frame of filling that sends at frame gap comprises frame length field, the frame length check field, be set to 0 length always and be the reserved field of 1 bit and include only station code in the source address sign indicating number and source address sign indicating number that the personal code work field amounts to 4 bytes, at transmitting terminal, the payload field that the DLP frame that has encapsulated the IP bag is encapsulated into the PDH frame must be carried out scrambler before, before receiving terminal is to any processing of data link layer protocol frame, at first carry out descrambling code, could be for further processing to the DLP frame behind the descrambling code, scrambler and descrambling code adopt motor synchronizing scrambler/descrambler, and its generator polynomial is G (X)=X ⁴³+ 1.

5, method according to claim 1, it is characterized in that, comprise a destination address sign indicating number DAC and source address sign indicating number SAC field in the data link layer protocol of described definition, for the IP data service, destination address sign indicating number in the data link layer protocol of described definition and source address sign indicating number are represented the purpose IP address of IP bag and the forwarding equivalence class of source IP address respectively, promptly replace the three layers of IP address to realize the forwarding and the exchange of IP bag with the forwarding equivalence class of IP bag as two layers data-link layer address as the destination address sign indicating number and the source address sign indicating number of the data link layer protocol frame of described definition, for the packet voice business, the destination address sign indicating number of the data link layer protocol of described definition and source address sign indicating number are represented the interim identity card number of the expression user identity of the telephone number of both call sides or the appointment of network authentication center respectively, the destination address sign indicating number adopts identical hierarchy with the source address sign indicating number, complete destination address sign indicating number and source address sign indicating number are all by national code CC, domestic area code NRC, four parts of station code NAC and personal code work UC are formed, the present invention defines the destination address sign indicating number and source address code field length is i.e. 8 eight hytes of 64 bits, wherein the national code field length is i.e. 2 eight hytes of 16 bits, be used for identifying certain service code of some countries or specific geographical area, CC is the first order forwarding label of corresponding IP bag, there is one or more service code country or geographic area, the voice service code, the video traffic code, IP v4 service code, IP v6 service code, the concrete national code value of related service is specified by relevant international standard mechanism, the international area code of IP operation national code in can the existing telephone coding system also can be other values of other appointment, domestic area code field length is 16 bits, certain regional service code in the indication a state, NRC is the second level forwarding label of IP bag, concrete NRC value is distributed by the communication highest administration mechanism of this state, for IP operation, this value can be that the national distance area code in the present phone number system also can be other values of other appointment, the station code field is 16 bits, identify the service code of certain network node, station code is the third level forwarding label of IP bag, occurrence is specified by Virtual network operator or Internet service provider, the personal code work field length is 16 bits, indicate certain user's service code, personal code work is the fourth stage forwarding label of IP bag, concrete UC value is specified by Virtual network operator or Internet service provider, realize at the data link layer protocol that adopts described definition which country Network Access Point or convergent point that internet and PDH (Pseudo-synchronous Digital Hierarchy) merge belong to according to the purpose IP address that IP wraps, which area of this state, which node and which user's quaternary structure is determined the forwarding equivalence class of IP bag, and the destination address sign indicating number of this value as the data link layer protocol frame of described definition, the forwarding that wraps in the network of IP is subsequently determined by the destination address sign indicating number of the data link layer protocol frame of described definition, substitute three layers of purpose IP address in the IP network with two layers destination address sign indicating number of the data link layer protocol frame of described definition and realize that the high speed of IP packets transmits, during the data link layer protocol frame of the described definition of forwarded, at first search the business type field in the data link layer protocol frame of described definition, determine professional priority by concrete type of service, be the national code in the destination address sign indicating number of searching in the data link layer protocol frame of described definition then, next is domestic area code, be station code once more, be personal code work at last, in case find a certain item code and local node different of the data link layer protocol frame of described definition, network node is no longer handled destination address sign indicating number back field in the data link layer protocol frame of described definition, directly be forwarded to next node, the principle that the data link layer protocol frame of described definition is transmitted is to adopt longest match principle, described is to utilize IP routing protocol to comprise OSPF according to destination address sign indicating number decision route, English is Open Shortest Path First, be abbreviated as OSPF, Border Gateway Protocol, English is Border Gateway Protocol, be abbreviated as BGP, the dynamic routing table that produces, the traffic engineering of utilizing the data link layer protocol of described definition to provide is come explicit configuration route.

6, method according to claim 1, it is characterized in that, the data link layer protocol of described definition comprises that a cover security mechanism guarantees the safety of upper-layer service in the network transport process, concrete grammar is: (1) thus utilize the forwarding equivalence class of IP bag to replace the IP address to realize that the forwarding and the exchange of IP bag shield real IP address, (2) upper-layer service is encrypted and authentication processing, when needs carry out the encrypting and authenticating processing to the IP bag, by a series of negotiation of two ends process of communicating by letter at needs, determine the cryptographic algorithm of employing, identifying algorithm, be provided with or exchange initialization password, consulting encrypting and authenticating algorithm and exchange initialization Password Operations adopts the internet security internet key exchange IKE related and IKMP ISAKMP and RFC2409 definition of RFC2408 definition to realize, set up two security association SA at the two ends of communication then, and according to purpose IP address, the algorithm that adopts is determined a Security Parameter Index SPI, this index value is added in the Security Parameter Index field in the data link layer protocol frame header of described definition, SPI is used for identifying the IP bag is encrypted, security association during authentication processing, the encrypting and authenticating algorithm that Security Parameter Index identifies security association uniquely and adopted with the destination address sign indicating number, simultaneously comprising the destination address sign indicating number, the cryptographic algorithm that adopts, identifying algorithm, the initialization password, Security Parameter Index adds in the security association database in interior parameter, security association database has write down and security-related various data, the SPI field length is 32 bits, wherein decimal value " 0 " is used for node this locality, specific implementation is used, decimal value 1～255 is kept to using in the future by IANA, other values are used to identify security association, owing to encrypt, the different needs of identifying algorithm carries out some data and fills processing, the data of filling are positioned at after the payload field, and a length value of filling adds in the filling length field value, the verify data that authentication processing generates is positioned at after the padding data field, before the frame check field, utilize the number of frames field value in the data link layer protocol of described definition that anti-reproducing function is provided, when carrying out encryption, the scope of encrypting comprises entire I P bag and the padding data from network layer, and the scope that authenticates when carrying out authentication processing comprises the filling length field, the number of frames field, the Security Parameter Index field, payload data is an entire I P bag, padding data.

7; method according to claim 1; it is characterized in that; the data link layer protocol of described definition comprises that the perfect network control administrative mechanism of a cover realizes the Topology Discovery that comprises of IP network; 2 layers of protection are switched; the Link State indication; fault management; performance management; configuration management is in interior control and management; described network control management realizes by control frame; when the binary value of the business type field of the data link layer protocol frame of described definition represents that the content that the encapsulation of data link layer protocol frame DLP frame payload field is carried is a network control management information during for " 10000001 "; corresponding data link layer protocol frame is a control frame; control frame realizes comprising Topology Discovery; the Link State indication; fault management; performance management; configuration management is in interior network control and management function; for annular and network topology; control frame also provides a kind of mechanism that realizes 50 milliseconds of protection switch functions; control frame adopts the TLV structure; TLV is the english abbreviation of Type-Length-Value; the Chinese meaning is type-length-value; type field length is 8 bits; be used for identifying the type of control frame; length field length is 8 bits; the sign TLV structure intermediate value that is used for representing with the byte form is the length of Value field; value field comprises the particular content that related parameter is arranged of control frame; in the control frame in the TLV structure usage of type field as shown in table 2; what represent when wherein type field value is binary " 00010001 " that control frame carries is OSPF Routing Protocol information; control frame carries the type field binary value is BGP Routing Protocol information for " 00010010 " expression; control frame carries the type field binary value is Signaling System 7(SS-7) information for " 00010011 " expression; what the type field binary value carried for " 00010100 " expression control frame is signaling information H.323; control frame carries the type field binary value is the Session initiation protocol SIP signaling information for " 00010101 " expression; control frame carries the type field binary value is Media Gateway Control Protocol MGCP signaling information for " 00010110 " expression; when being binary " 11111111 ", type field represents that control frame is the self-defining management control frame of manufacturer; the self-defining management function of manufacturer comprises that equipment manufacturers are the self-defining network management control function of network management control function and operator that home built relevant devices is added; its management data content is self-defined by manufacturer; but need to adopt the TLV structure; the number of frames value of the data link layer protocol control frame of described definition is used for identifying the sequencing that control frame sends; the data link layer protocol control information that realizes the described definition of sign sends the function of sequence successively, and the payload information field of the data link layer protocol control frame of described definition comprises one or more control TLV information.

The binary value usage of type field value in table 2. control frame

The binary value of type field Usage 00000000 Keep 00000001 The Topology Discovery claim frame 00000010 The Topology Discovery response frame 00000011 Topology report frame 00000100 2 layers of protection switching request frame 00000101 Response frame is switched in 2 layers of protection 00000110 2 layers of protection switch status report frame 00000111 The configuring request frame 00001000 The configuration response frame 00001001 The configuration report frame 00001010 The fault inquiry claim frame 00001011 The fault inquiry response frame 00001100 The Trouble Report frame 00001101 Performance queries is asked frame clearly 00001110 The performance queries response frame 00001111 The performance report frame 00010000 WTR_Request Wait-to-Restore claim frame 00010001 Routing Protocol---OSPF

00010010 Routing Protocol---BGP 00010011 Signaling---Signaling System 7(SS-7), english abbreviation are SS7 00010100 Signaling---H.323 00010101 Signaling---Session initiation protocol SIP 00010110 Signaling---Media Gateway Control Protocol MGCP 00010111～11111110 Keep 11111111 Manufacturer's self-defining dedicated network control and management frame

8; method according to claim 7; it is characterized in that; the network control administrative mechanism that the data link layer protocol of described definition provides comprises Topology Discovery mechanism; which Topology Discovery is used for finding out is that network node is the neighbor node of DL P node and the state of neighbor node; can find have what nodes to work on the ring with Topology Discovery for annular and network topology network node; the realization of topology discovery function relies on the Topology Discovery claim frame; English is Topology_Discovery_Request frame; the Topology Discovery response frame; English is Topology_Discovery_Response frame; topology report frame; English is realized for Topology_State_Report frame; during installation of project stage or engineering operation; network node be DLP node A with the L2 address sign indicating number of this node as destination address periodically broadcast topology find that claim frame is to other node; claim that one of them is a Node B; the transmission cycle is determined by Topology Discovery timer Timer_Topology_Discovery; it is programmable that the Topology Discovery timer sends timing; default to 2 seconds; receive all nodes of Topology Discovery claim frame; Node B; respond for node A by the Topology Discovery response frame; give node A the existence of Node B and state feedback thereof; node A adds other address of node sign indicating number and the corresponding work state content that receive in the topological address database of node A to; for annular and network topology; the station code that has artis to go up in each address of node sign indicating number according to ring is that NAC field value content is determined to encircle upward or the node sequence in the grid; node A receives the identical operations content from Node B continuous 3 times; then think the Topology Discovery frame efficient in operation of node; relevant topological state content is write the topological database of ingress; network node is reported the state of frame to other this node of node report that comprises network management entity with topology; for bus topology; star and tree-like this three class are not protected its topological state of node report of the topological structure of switch function owing to the topological structure reason; represent when type field value is binary value " 00000001 " among the control frame TLV that control frame is the Topology Discovery claim frame; be the Topology Discovery response frame during binary value " 00000010 "; represent during binary value " 00000011 " that control frame is a topology report frame; the Topology Discovery claim frame; the value of Topology Discovery response frame and topology report frame is that the value of Value field all is two parameters; first parameter is a node address; length is 8 bytes; second parameter is the node operating state; length is 1 byte, and the node operating conditions is as shown in table 3.

Second parameter of table 3. Topology Discovery frame

9; method according to claim 7; it is characterized in that; the network control administrative mechanism that the data link layer protocol of described definition provides comprises 2 layers of wrap protection; 2 layers of protection are switched to refer to and allow to realize the function that network self-healing recovers when the network physical link breaks down in 50 milliseconds; 50 milliseconds of protection switch functions that DLP provides are used for can realizing protecting annular or the network topology link of switching; certain DLP node is assumed to node 2 in certain direction on ring or the grid; be assumed to from node 1 to node 2; in 20 milliseconds of times, do not receive and comprise Frame; control frame; traffic management frame or empty frame break down at interior any data message or physical link; this node enters 2 layers of protection switch status; sending 2 layers of guard mode claim frame is that L2PS_Request frame is assumed to node 1 to node coupled on the network; node 1 receives and also enters 2 layers of protection switch status behind these 2 layers of guard mode claim frames is the L2PS attitude; and send 2 layers of protection switch status and report that frames are that L2PS_State_Report frame gives the node that connects network management entity or is broadcast to all nodes that are in normal state on the ring; the time value that receives any data message in the described stipulated time is programmable; the default value of DLP definition is 20 milliseconds; in the L2PS attitude; all packets of 2 are switched on the standby path from node 1 to node; in case the fault clearance on the node 2; node 2 enters normal state; starting WTR Wait-to-Restore timer is Timer_WTR; the Timer_WTR value is programmable; scope is 0～1800 second; default value is 10 seconds; in case the WTR timer stops; it is that WTR_Request frame is to node 1 that node 2 sends the WTR claim frame along the path before and after switching; node 1 returns normal state from the L2PS attitude after receiving this frame; when being binary " 00000100 ", the type field value of DLP definition control frame represents that control frame is 2 layers of protection switching request frame; when being binary " 00000101 ", the type field value of control frame represents that control frame is that response frame is switched in 2 layers of protection; when being binary " 00000110 ", the type field value of control frame represents that control frame is that the report frame is switched in 2 layers of protection; in 2 layers of protection switching request frame TLV structure; TLV structure intermediate value is that V English has 2 for the parameter of Value field; first parameter is this address of node sign indicating number; length is 8 bytes; second parameter is Forced Switch FS for the operating state of this node; physical signalling inefficacy PSF; a kind of in physical signalling degeneration PSD and the Manual Switch; length is 1 byte; the binary value of each state is as shown in table 4; other value of this byte keeps to be done to use in the future; the parameter that value field in the response frame TLV structure is switched in 2 layers of protection has two; first parameter is this address of node sign indicating number; length is 8 bytes; second parameter length is 1 byte; its binary value is successfully realized switching for " 00000000 " is represented; binary value is switched unsuccessful for " 11111111 " expression; other binary value keeps; 2 layers of protection are switched and are reported that value field has three parameters in the frame TLV structure; first parameter is the address of node sign indicating number; length is 8 bytes; second parameter is the reason of switching of node; length is 1 byte; the binary value of each attitude is as shown in table 4; whether the 3rd parametric representation node is in 2 layers of guard mode; wherein binary value is in 2 layers of protection switch status for " 11111111 " expression; binary value is in normal state for " 00000000 " expression; other is worth reservation; when control frame TLV type field value is binary " 00010000 "; the expression control frame is the WTR_Request frame; the WTR_Request frame has only a parameter; length is 8 bits; value is represented successful Wait-to-Restore for binary " 11111111 ", and other is worth reservation.

The 2nd parameter type of table 4.L2PS claim frame and L2PS report frame

Value State 10000000 Forced Switch, English is Forced Switch, FS 00100000 Physical signalling lost efficacy, and English is Physical Signal Fail, PSF 00001000 Physical signalling is degenerated, and English is Physical Signal Degrade, PSD 00000010 Manual Switch, English is Manual Switch, MS Other Keep

10, method according to claim 7, it is characterized in that, the network control administrative mechanism that the data link layer protocol of described definition provides comprises deployment management mechanism, deployment management mechanism is used for realizing that to network node be the relevant configuring ports management of DLP node device, the port address of apparatus for network node must dispose one two layers address as the source address sign indicating number of this port in the installation of project stage, the configuration management frame comprises three kinds: the configuring request frame, English is Configuration_Request frame, the configuration response frame, English is Configuration_Response Frame, the configuration report frame, English is Configuration_Report frame, during installation of project stage or engineering operation, network management entity is that port sends the configuring request frame and is configured by network management interface to each link of apparatus for network node, the DLP node responds to network management entity by configuration response frame or configuration report frame, represent that control frame is the configuring request frame when type field value is binary system " 00000111 " value among the DLP protocol definition control frame TLV, be the configuration response frame during binary system " 00001000 ", represent during binary system " 00001001 " that control frame is the configuration report frame, the configuring request frame comprises two parameters, first parameter is the origin node address, first parameter field length is 8 bytes, second parameter is the new node address sign indicating number, second parameter field length is 8 bytes, the value of configuration response frame is that the Value field value comprises three parameters: first parameter is the origin node address, field length is 8 bytes, second parameter is new node address sign indicating number, field length is 8 bytes, the 3rd parameter length is 1 byte, its binary value is " 00000000 " expression configuration successful, binary value " 11111111 " expression configuration is unsuccessful, other value keeps to give in the future to be used, the configuration report frame comprises two parameters: first parameter is a node address, field length is 8 bytes, second parameter length is 8 bytes, represents the configuration address of this node.

11, method according to claim 7, it is characterized in that, the network control administrative mechanism that the data link layer protocol of described definition provides comprises fault management mechanism, fault management mechanism is used for realizing the fault management to network node, fault management capability is realized by the fault management frame, the fault management frame comprises three: the fault inquiry claim frame is English to be Fault_Inquiry_Request frame, fault inquiry response frame English is the English Fault_Report frame of being of Fault_Inquiry_Response frame and Trouble Report frame, represent that control frame is the fault inquiry claim frame when type field value is binary value " 00001010 " among the DLP protocol definition control frame TLV, be the fault inquiry response frame during binary value " 00001011 ", represent during binary value " 00001100 " that control frame is the Trouble Report frame, the fault inquiry claim frame comprises 1 parameter, this parameter is a node address, field length is 8 bytes, the value of fault inquiry response frame is that the Value field value comprises two parameters: first parameter is a node address, field length is 8 bytes, second parameter length is that 1 byte is used for representing fault type, its binary value is that physical signalling inefficacy english abbreviation is PSF for " 00000000 " expression fault, binary value " 11111111 " expression fault is that physical signalling degeneration english abbreviation is PSD, binary value is the normal fault-free of " 00001111 " expression node, other value keeps to give in the future to be used, the value field of Trouble Report frame comprises two parameters: first parameter is a node address, field length is 8 bytes, second parameter length is that 1 byte is used for representing fault type, its binary value is that physical signalling lost efficacy for " 00000000 " expression fault, english abbreviation is PSF, binary value " 11111111 " expression fault is that physical signalling is degenerated, english abbreviation is PSD, and other value keeps to give in the future to be used.

12, method according to claim 7, it is characterized in that, the network control administrative mechanism that the data link layer protocol of described definition provides comprises performance management mechanism, performance management mechanism is used for realizing to network node to be the performance management of DLP node, performance management function through performance management frames realizes, the performance management frame comprises three kinds of frames: the performance queries claim frame is English to be Performance_Inquiry_Request frame, performance queries response frame English is the English Performance_Report frame of being of Performance_Inquiry_Response frame and performance report frame, when the control frame type field value is binary " 00001101 ", the expression control frame is the performance queries claim frame, it is the network administration properties index of DLP node that the performance queries claim frame is used for asking the requester network node, when the control frame type field value is binary " 00001110 ", the expression control frame is the performance queries response frame, the performance queries response frame is used for the network administration properties index of the network node that response performance query requests frame proposes, when the control frame type field value is binary " 00001111 ", the expression control frame is the performance report frame, the performance report frame is used for to every performance index of network management entity reporting ent node, the value of performance queries claim frame is that the Value field comprises three parameters, first parameter is for asking the node address sign indicating number of query performance, length is 8 bytes, second parameter is the time measurement unit that is used for identifying calculation of performance indicators, length is 4 bits, wherein binary " 0001 " expression unit of measurement is second, binary " 0010 " expression unit of measurement is minute, binary " 0011 " expression unit of measurement is hour, binary " 0100 " expression unit of measurement is the sky, other field value keeps to using in the future, the 3rd parameter is the performance index type, length is 4 bits, wherein binary " 0001 " expression performance index are Frame Check Sequence mistake number, binary " 0010 " expression number of dropped packets, binary " 0011 " expression packet loss, the time delay of binary " 0100 " expression bag, it is time delay, other value keeps to give in the future to be used, the value of performance queries response frame is that the Value field comprises 4 parameters, first parameter length is 8 bytes, be used for representing node address that the performance queries claim frame is responded, second parameter length is 4 bits, be used for identifying the time measurement unit of calculation of performance indicators, the 3rd parameter length is that 4 bits are used for identifying the performance index type, the 4th parameter length is 3 bytes, be used for representing the performance index value that specifically will inquire about, the value of performance queries response frame is that second of Value field is that usage and the value of performance queries claim frame of time unit of measurement and performance index type is that the usage of second and the 3rd parameter of Value field is the same with the 3rd parameter, the value of performance report frame is that the Value field comprises 4 parameters, first parameter length is 8 bytes, be used for representing to report the node address of its performance to network management entity, second parameter length is 4 bits, be used for identifying the time measurement unit of calculation of performance indicators, the 3rd parameter length is that 4 bits are used for identifying the performance index type, the 4th parameter length is 3 bytes, be used for representing that the performance index value that specifically will report, the value of performance report frame are that second of Value field is that usage and the value of performance queries claim frame of time unit of measurement and performance index type is that the usage of second and the 3rd parameter of Value field is the same with the 3rd parameter.

13, method according to claim 1 is characterized in that, the data link layer protocol of described definition provides traffic management mechanism to realize the traffic engineering of network, method is that at first convection current is classified through all business of network, promptly to the speech that comprises from the upper strata, the IP data, Digital Television, the ethernet mac frame, TDM circuit simulation signal carries out priority classification at interior miscellaneous service and is divided into the business of high priority and the business of low priority, is that source address sign indicating number and destination address representation upper-layer service address are destination address and source address with two layers the data-link layer address of being positioned at of classification, simultaneously to business according to country or geographic area, economize, the area, county, city, villages and towns classify, thereby represent that with the L2 address of classification physical link port L2 address carries out the classification of countries to physical resource, distribute different band width in physical links to be used to transmit dissimilar business simultaneously, the miscellaneous service of the whole network of flowing through is mapped on the actual physical link according to different priority type and region classification, realizes the flow and the bandwidth resources of whole network are unified dispatching management and monitoring by the traffic management frame, specific as follows: at first to being that all business of the above level of DLP layer are classified from data link layer, be divided into the business of high priority and the business of low priority, the business packet includes network managing control information of high priority is a control frame, traffic management information is the traffic management frame, the various real-time voice service that comprises fixing or mobile voice or video telephone, the various real-time videos that comprise Digital Television, IP-based real time business, PDH and SDH/SONET circuit simulation signal, the business of low priority are general IP data service, concrete various types of traffic is identified by the business type field value in the data link layer protocol frame of described definition, has defined the sharp source address sign indicating number of destination address sign indicating number of a classification in the data link layer protocol frame of described definition, and the destination address sign indicating number adopts identical structure with the source address sign indicating number, all by national code, domestic area code, station code and personal code work four parts are formed, and are used for concrete country or geographic area under the identification service respectively, the concrete province or the state, concrete node and concrete specific user are for IP operation, destination address sign indicating number and source address sign indicating number are represented the purpose IP address in the IP packet head and the forwarding equivalence class of source IP address respectively, represent the telephone number of both call sides respectively for voice service destination address sign indicating number and source address sign indicating number, represent the address of Digital Television transmitting terminal and receiving terminal respectively for digital television business destination address sign indicating number and source address sign indicating number, for the ethernet mac frame, PDH, SDH/SONET circuit simulation signal service destination address sign indicating number and source address sign indicating number are represented the address of signal sending end and receiving terminal respectively, like this by data-link layer address to the speech that comprises from the upper strata, data, video, Ethernet and TDM circuit simulation signal have carried out the classification of region at interior miscellaneous service, miscellaneous service according to country, province/state, the area, county, city, villages and towns, network node and particular user are classified, each node port that whole physics is transmitted network comprises that the data-link layer address of one two layers of each light-wave identifications of wavelength-division multiplex system is the source address of DLP frame simultaneously, and network bandwidth resources is classified to the bandwidth resources that whole physics transmits network according to type of service and geographic area, according to type of service and network traffics Internet resources is dispatched, part bandwidth is used to transmit important real time business, part bandwidth is used to transmit general IP data service, and a part of bandwidth link is used to transmit international business, and a part of bandwidth link is used to transmit business transprovincially, distribute certain bandwidth link to be used to transmit local service, the break down link of the service occupation low priority traffice that allows high priority of network, traffic engineering realizes that by the traffic management frame traffic management frame is monitored processing to the flow and the network bandwidth resources of whole network, network management system comprises a traffic engineering database, this data-base recording the link circuit resource distribution situation of whole network, flow through the type of service of network, the overall budget number, total flow, physical link speed, allow maximum transfer rate, when the data link layer protocol frame of described definition is when the business type field value is set to binary value " 10000010 " in the DLP frame header, represent described definition data link layer protocol frame encapsulation be traffic management information, corresponding data link layer protocol frame is the traffic management frame, and the traffic management information of traffic management frame adopts the type-length-value structure, and English is Type-Length-Value, english abbreviation is TLV, wherein, type field length is 8 bits, is used to refer to the type of traffic management frame, length field length is 8 bits, being used for byte form indicated value is the length of Value field, and value is that the Value field comprises concrete traffic management content frame, and the usage of network management frame type field is as shown in table 5, what represent when wherein type field value is binary " 00000001 " among the traffic management frame TLV that traffic management frame payload carries is link traffic flow attribution information, its value is that the Value field contents comprises four parameters, and first parameter is a node address, and length is 8 bytes, second parameter is type of service, be used for representing that length is 1 byte through the affiliated type of service of network node flow bag, the service class offset of dissimilar business is determined by table 1, the 3rd parameter length is that 1 byte is used for identifying the measuring parameter type that flows through the network node link flow, wherein binary value is a peak rate for " 00000001 " expression flow measurement parameter type, and unit is a bits per second, and binary value is a Mean Speed for " 00000010 " expression flow measurement parameter type, unit is a bits per second, binary value is that " 00000011 " expression flow measurement parameter type is maximum bag number, and unit is the bag per second, and binary value is an average number of packets for " 00000100 " expression flow measurement parameter type, unit is the bag per second, binary value is the peak value burst length for " 00000101 " expression flow measurement parameter type, and unit is a byte, and binary value is that " 00000110 " expression flow measurement parameter type is the agreement burst length, unit is a byte, binary value is a burst excess length for " 00000111 " expression flow measurement parameter type, and unit is a byte, and other value keeps to give in the future to be used, the 4th parameter length is the value that 4 bytes are used for identifying concrete various flows, represent the Resource Properties of various physical links when type field value is binary system " 00000100～00100111 " among the traffic management frame TLV, the types value of various concrete links is as shown in table 5, and the source attribute values of various physical links includes four parameters, first parameter is a node address, length is 8 bytes, and second parameter is type of service, is used for representing through the affiliated type of service of node flow bag, length is 1 byte, the service class offset of dissimilar business determines that by table 1 the 3rd parameter length is that 1 byte is used for identifying the measuring parameter type that flows through the node link flow, and wherein binary value is a peak rate for " 00000001 " expression flow measurement parameter type, unit is a bits per second, binary value is a Mean Speed for " 00000010 " expression flow measurement parameter type, and unit is a bits per second, and binary value is the largest packet number for " 00000011 " expression flow measurement parameter type, unit is the bag per second, binary value is that average packet is a packet count for " 00000100 " expression flow measurement parameter type, and unit is the bag per second, and binary value is the peak value burst length for " 00000101 " expression flow measurement parameter type, unit is a byte, binary value is that " 00000110 " expression flow measurement parameter type is the agreement burst length, and unit is a byte, and binary value is a burst excess length for " 00000111 " expression flow measurement parameter type, unit is a byte, other value keeps to give in the future to be used, and the 4th parameter length is the value that 4 bytes are used for identifying concrete various flows, and the number of frames value of the data link layer protocol traffic management frame of described definition is used for identifying the sequencing that the traffic management frame sends, realize that the data link layer protocol flow control management information of the described definition of sign sends the function of sequencing, the data link layer protocol of described definition is that the payload information field of DLP traffic management frame comprises one or more traffic management TLV information.

The usage of table 5. traffic management frame type field

The binary value of type field Usage 00000000 Keep 00000001 The link traffic flow attribution 00000010 10Mbps ethernet link attribute 00000011 100Mbps ethernet link attribute 00000100 10/100Mbps ethernet link attribute

00000101 The gigabit ethernet link attribute 00000110 10Gb/s ethernet link attribute 00000111 The STM-0SDH link attribute 00001000 STM-1/OC-3c SDH link attribute 00001001 STM-4/OC-12c SDH link attribute 00001010 STM-16/OC-48c SDH link attribute 00001011 STM-64/OC-192c SDH link attribute 00001100 STM-256/OC-768c SDH link attribute 00001101 64 kilobits/second physical link attributes 00001110 1544 kilobits/second PDH link attributes 00001111 2048 kilobits/second PDH link attributes 00010000 6312 kilobits/second PDH link attributes 00010001 8448 kilobits/second PDH link attributes 00010010 34368 kilobits/second PDH link attributes 00010011 44736 kilobits/second PDH link attributes 00010100 139264 kilobits/second PDH link attributes 00010101 IEEE 802.11a link attribute 00010110 IEEE 802.11b link attribute 00010111 IEEE 802.11g link attribute 00011000 IEEE 802.11h link attribute 00011001 The GSM link attribute 00011010 IEEE 802.16a link attribute 00011011 IEEE 802.16c link attribute 00011100 The WCDMA link attribute 00011101 The TD-SCDMA link attribute 00011110 The CDMA2000 link attribute 00011111 The DVB link attribute 00100000 The MPEG-1 link attribute 00100001 The MPEG-2 link attribute 00100010 The MPEG-3 link attribute 00100011 The isdn link attribute 00100100 The adsl link attribute 00100101 The VDSL link attribute 00100110 Other xDSL link attributes 00100111～11111111 Keep

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