CN102546104B - Method utilizing generic framing procedure to transmit network management information - Google Patents
Method utilizing generic framing procedure to transmit network management information Download PDFInfo
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- CN102546104B CN102546104B CN201110445341.6A CN201110445341A CN102546104B CN 102546104 B CN102546104 B CN 102546104B CN 201110445341 A CN201110445341 A CN 201110445341A CN 102546104 B CN102546104 B CN 102546104B
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Abstract
A method utilizing generic framing procedure to transmit network management information relates to the field of network management and includes: judging whether a data stream is a client management frame or not at a transmitting terminal according to payload type indication thresholds of the data stream when the data stream arrives, selecting an optional value from the user payload indication thresholds reserved for the future as a mark to indicate that data loaded in the client management frame payload indication domain are network management information if the data stream is judged to be the client management frame, then transmitting the client management frame loaded with the network management information through a transmission passage, de-encapsulating the generic framing procedure after a receiving terminal receives the data stream, judging types of the received information by reading the payload type indication thresholds, and processing the data stream according to the set relation of the user payload indication domain and acquiring the network management information in the corresponding payload domain if the data stream is judged to be the client management frame containing the network management information. The network management level is not modified at all when the network management information is updated by the method, and the network management passage with the generic framing procedure is realized on the condition without adding new fields.
Description
Technical field
The present invention relates to field of network management, specifically described is a kind of method adopting GFP (GenericFraming Procedure, Generic Framing Procedure) to transmit network management information.
Background technology
Ensure the condition of business at the network equipment under, how can more convenient, effective supervision and the management of carrying out business efficiently in transport network, become the requirement that the network equipment is the most basic in real world applications.The requirement to network management system structure in general technical is used according to the network equipment, the webmaster of general networking equipment realizes in units of economizing, at open MIB (the ManagementInformation Base of local side frame, management information bank), the united net management of all local side apparatus is realized by third party software.Webmaster is generally divided into 2 level structures, and network management workstation realizes the management to local side apparatus, and realizes the management to user's branch equipment by local side apparatus.In traditional webmaster implementation method, transmit webmaster information channel at SDH (Synchronous DigitalHierarchy, SDH (Synchronous Digital Hierarchy)) or OTN (Optical Transport Network, optical transfer network) in, the general in-band channel of himself that uses transmits network management information.Although the method that this webmaster transmits has very large range of application, but self is having some limitations property also, the inband NMS channel of such as SDH, depend on that physical layer provides independent supervisory communications passage and wherein some overhead field completely, very powerful network management function can be realized although do like this, if to upgrade network management system time need have larger change in the management layer of network.
GFP is as a kind of new standard of data encapsulation, ITU-T G.7041 in be described later in detail, this standard is applicable to the data-signal needing to transmit on SDH and OTN, described data-signal can be PDU (Protocol Data Unit, protocol Data Unit), as IP/PPP, ethernet mac or the successive bits stream based on block code of dividing into groups, as Fiber Channel.GFP is as new standard a kind of in network service, in its network management function, define CSF (Client Signal Fail, Client Signal Fail information), sent to GFP egress by GFP source, when finding input client signal mistake in GFP source, transmission CSF is indicated to GFP egress by source.Common customer Signal Fail comprises frame signal synchronization loss, dropout or loss of clock, can produce CSF, and its position occurred can be in service layer's mistake, the processing procedure of GFP own, in signal adaptation process, in transport network transport process.
In current agreement, two kinds of information types are defined to CSF: client signal is lost and client characters synchronization loss.The Client Signal Fail information that this agreement possesses self, does not have fault detect and the location of client one end time only to solve and to transmit client traffic in transport network, but this management and supervision is far from being enough in current network monitoring.Moreover use GFP client's frame to transmit the method for network management information at present, in GFP client's frame, add new field to define network management information mostly, this needs the relevant information changing GFP agreement, is not inconsistent, causes inconvenience simultaneously to the intercommunication of network management information with the versatility of GFP agreement.
Summary of the invention
For the defect existed in prior art, the object of the present invention is to provide a kind of Generic Framing Procedure that adopts to transmit the method for network management information, the management information of the network equipment independently transmits in Transfer pipe, during upgrading network management information to network management aspect without any changes; GFP network management path can be realized when not adding new field, transmitting management, the monitor and forecast information of network with this, realizing the intercommunication of network management information.
For reaching above object, the technical scheme that the present invention takes is: a kind of Generic Framing Procedure that adopts is to transmit the method for network management information, comprise the steps: that transmitting terminal comes then in data flow, judge whether this data flow is customer account management frame by the payload type instruction thresholding of data flow, if customer account management frame, indicate in thresholding at its user's payload being use in the future retains, choose arbitrarily a value as mark, what load in expression customer account management frame payload field is network management information, then will load the customer account management frame of network management information by transmission channel transmission; After receiving terminal receives data flow, carry out Generic Framing Procedure decapsulation, read payload type instruction thresholding to judge to receive information type, if data flow is the customer account management frame comprising network management information, then by the relation of user's payload instructions field setting, row relax is flow to data, and obtain the network management information in corresponding payload field.
On the basis of technique scheme, when payload type instruction thresholding=000 of described data flow, transmitting terminal judges that this data flow is as client data frame, is sent to receiving terminal by this client data frame by transmission channel.
On the basis of technique scheme, if described receiving terminal receives payload type instruction thresholding=000 of data flow, then this data flow is client data frame, directly processes data message in general framing procedure frame.
On the basis of technique scheme, described network management information transmits based on customer account management frame, and the transfer mode in Transfer pipe is identical with client data frame, does not have priority therebetween.
On the basis of technique scheme, described transmitting terminal judge this data flow be customer account management frame according to being: payload type instruction thresholding=100 of described data flow.
On the basis of technique scheme, after described transmitting terminal selectes the value as user's payload instructions field of mark, in the first character joint fill marker data of the payload information of described customer account management frame, form Generic Framing Procedure webmaster frame, and by transmission channel transmission.
On the basis of technique scheme, when the data stream packets that receiving terminal receives is containing network management information, then the value of user's payload instructions field of this data flow and the first character joint of payload information is read, if data are identical with flag data in first character joint, be then Generic Framing Procedure webmaster frame, process and obtain the network management information in user's payload instructions field.
On the basis of technique scheme, if when in customer account management frame, user's payload instruction thresholding is 00000001 or 00000010, show that client signal is lost or synchronous characteristic is lost, belong to and send client's fail message, transmitting terminal Auto-writing user payload instruction thresholding, after Client Signal Fail information is carried out Generic Framing Procedure encapsulation, be sent to receiving terminal by transmission channel.
On the basis of technique scheme, after the data flow received when receiving terminal contains client's fail message, directly read client's fail message.
Beneficial effect of the present invention is:
1. the management information of the network equipment can not rely on the transmission network of its outside, and transfer mode has very strong independence and fail safe.
2. the management information of the network equipment independently transmits in Transfer pipe, does not conflict mutually, with other management information in the data message transmitted and passage during upgrading network management information to network management aspect without any changes.
3. this method adopts inband network management transfer mode, and not by the impact of transport service, the transmission of webmaster and the transmission of business can be carried out simultaneously, do not have the selection of priority, and whole process implementation is relatively easy, and not specific operation controls the transmission of webmaster.
4. network management communication passage is by the transparent transmission of GFP client's frame, the formal definition in addition not any to GFP management frames information field, network management information transmission can be attended by while data services in network equipment Transfer pipe, there is very strong flexibility, and the upgrading of convenient and equipment and maintenance.
5. the method that the present invention transmits webmaster relative to other has more strong security energy, does not need the newly-increased other domain of definition to realize the transmission of webmaster, greatly reduces the probability broken down in transmitting.
6. adopt ripe GFP data encapsulation pattern to transmit the advantage of webmaster Information inheriting former transmission webmaster mode, it has fixing transfer structure, it is also need corresponding frame originating point information to define the type of webmaster, and transmitting terminal and receiving terminal only need the network management information that just can decomposite needs according to its corresponding byte easily.
Accompanying drawing explanation
Fig. 1 is that the present invention adopts Generic Framing Procedure to the composition diagram of GFP webmaster frame in the embodiment of the method transmitting network management information;
Fig. 2 is that the present invention adopts Generic Framing Procedure to transmit the flow chart of the transmitting terminal of the embodiment of the method for network management information;
Fig. 3 is that the present invention adopts Generic Framing Procedure to transmit the flow chart of the receiving terminal of the embodiment of the method for network management information;
Fig. 4 is that the present invention adopts Generic Framing Procedure to transmit the overall schematic of the embodiment of the method for network management information.
Embodiment
The present invention adopts GFP to transmit the method for network management information, comprises the steps:
Transmitting terminal comes then in data flow, judge whether this data flow is customer account management frame by the payload type instruction thresholding of data flow, if customer account management frame, indicate in thresholding at its user's payload being use in the future retains, choose arbitrarily a value as mark, what load in expression customer account management frame payload field is network management information, then will load the customer account management frame of network management information by transmission channel transmission;
After receiving terminal receives data flow, carry out Generic Framing Procedure decapsulation, read and judge that the payload type of data flow indicates thresholding, if data flow is customer account management frame, then this data flow is processed and obtain the network management information in user's payload instructions field.
Below by way of the drawings and specific embodiments, the present invention is described in further detail.
G.7041, ITU-T defines two kinds of gfp frames in agreement: i.e. GFP client's frame and GFP control frame; GFP client's frame in turn defines client data frame and customer account management frame two kinds, and GFP control frame only has GFP idle frame (i.e. IDLE frame) at present, and its specifying information is non-specific definition also.Adopt GFP to transmit the method for network management information, be transmit network management information according to the domain of definition existed in customer account management frame structure, be based upon on customer account management frame basis.According in ITU-T G.7041 agreement to the definition of GFP client's frame, comprise core head and payload field two parts composition, wherein core head is 4 bytes, payload field is that 4-65535 byte is elongated, as long as this GFP client's frame is not IDLE frame, PTI in GFP client's frame indicates the type of GFP client's frame, only define client's frame of 2 types at present: client data frame (PTI=000) and customer account management frame (PTI=100), all the other frames are all retain, the transfer mode of customer account management frame in Transfer pipe is identical with client data frame, does not have priority therebetween.
Be illustrated in figure 1 GFP webmaster frame composition, in the present embodiment, the frame length of GFP client's frame is selected to be 20 bytes, comprise the core head of 4 bytes and the payload field of 16 bytes, wherein core head 1-2 byte is defined as PLI (Payload Length Indicator payload length instructions field), 3-4 byte is defined as core HEC (Header Error Check, head error checking and correction territory) (16bit), represents with CHEC.Payload field comprises the payload letter head of 4 bytes and the payload information of 12 bytes, can also select to comprise payload FCS (Frame CheckSequence, Frame Check Sequence) (1bit).Described payload letter head believes head HEC (16bit) information by the payload type of 2 bytes and payload, in order to distinguish, represents with tHEC herein; Payload type specifically comprises PTI (Payload type identifier, payload type instructions field) (3bit), PFI (Payload FCS Identifier, payload FCS indications) (1bit), EXI (Extension Header Identifier, extension header identifier) (4bit) and UPI (User Payload Identifier, user's payload instructions field) (8bit) information.
PTI=100 is used to transmit network management information for during customer account management frame in the present embodiment.Described payload information comprises 1 flag byte, 1 control command byte, 9 user data frame bytes, 1 check byte, and wherein flag byte is the first character joint in payload information.Due to the network management information whether network management information that transmits in Transfer pipe is device requirement will be distinguished, therefore in the first character joint fill marker data of payload information, flag data is a fixed value, to facilitate the correct transmission of network management information and to judge receiving the correct further of network management information.
What the present embodiment showed the customer account management frame transmission now transmitted by the value originally do not used in setting UPI is the network management information defined, and wherein the setting of GFP customer account management frame UPI value is as shown in table 1:
Table 1
Wherein, UPI=00000000 or 11111111, purposes is for retaining; During UPI=11100000Through11111110, purposes is that ownership purposes retains, UPI=00000001 or 00000010, show that client signal is lost or synchronous characteristic is lost, belong to Client Signal Fail information, it is a kind of network management information carried in customer account management frame, is more than the purposes that in GFP customer account management frame, agreement specifies.And UPI=00000011Through 11011111, for in agreement not regulation be the part using reservation in the future, therefore arbitrarily choose value as mark, be used for representing that what load in customer account management frame payload field is network management information, network management information is herein self-defining.In the present embodiment, what selected UPI=10000000 showed to transmit in now customer account management frame is network management information.
As shown in Figure 2, define in advance according to table 1, when data flow arrives, the idiographic flow of the present embodiment transmitting terminal is as follows:
S101. judge whether data flow bytes of payload length equals 16 bytes according to PLI value, if be not equal to 16 bytes, then the encapsulation of GFP client's frame completed to it, proceed to S106; If equal 16 bytes, enter S102.
S102. judge the data stream type transmitted, as PTI=000, data flow is client data frame, after customer data information is directly carried out GFP encapsulation, proceeds to S106; As PTI=100, data flow is customer account management frame, enters S103.
S103., UPI value in customer account management frame is set, as UPI=00000001 or UPI=00000010, for client signal is lost or synchronous characteristic loss, the two all belongs to the situation of Client Signal Fail, then transmitting terminal Auto-writing UPI value, after Client Signal Fail information is carried out GFP encapsulation, proceed to S106; UPI=10000000 is as mark in setting, is used for representing that what load in customer account management frame payload field is network management information, enters S104.
S104. send and load the customer account management frame of network management information, fill in UPI value by CPU, the first character of GFP payload field is saved (i.e. flag byte) fill marker data, and fill in other bytes according to equipment requirement and be worth accordingly.
S105. complete GFP encapsulation, form Generic Framing Procedure webmaster frame.
S106. by Generic Framing Procedure webmaster frame by Transfer pipe transmission.
As shown in Figure 3, after receiving terminal receives the data flow that Transfer pipe transmits, detailed process is as follows:
S201. first data flow is carried out GFP decapsulation.
S202. according to PLI value, receiving terminal judges whether receiving data stream bytes of payload length equals 16 bytes, if bytes of payload length is not equal to 16 bytes, according to normal GFP client's frame processing mode process GFP client intraframe data information, proceeds to S207; If bytes of payload length equals 16 bytes, enter S203.
S203. read the data stream type that GFP client's frame payload letter head PTI value judges to receive, as PTI=000, receiving data stream is client data frame, directly processes the data message in client data frame; As PTI=100, receiving data stream is customer account management frame, enters S204.
S204. UPI value in customer account management frame is read, according to the corresponding relation of definition in table 1, if receive UPI=00000001 or UPI=00000010 in customer account management frame, the data flow then received is that client signal is lost or synchronous characteristic is lost, the two all belongs to Client Signal Fail information, proceeds to S207; If UPI=10000000, then the data flow received is load the customer account management frame of network management information, enters S205.
S205. read the first character joint value being loaded with payload content in the customer account management frame of network management information, namely read the flag byte in payload, if data are identical with flag data in first character joint, then the customer account management frame received is GFP webmaster frame, enters S206.
S206. the network management information content in GFP webmaster frame is processed.
S207. the network management information in data message in GFP client frame or corresponding payload field is obtained.
In above-mentioned steps, the customer account management frame being loaded with network management information is directly sent to receiving terminal by transmitting terminal, and receiving terminal receives the described customer account management frame containing network management information, directly processes and obtains network management information wherein.The first character joint value fill marker data of payload content are to confirm network management information more accurately.
As shown in Figure 4, in sum, transmitting terminal can by client data frame, IDLE frame and customer account management frame, customer account management frame comprises network management information and client's fail message, these contents are after judging, enter receiving terminal by transmission channel, between various GFP client's frame, there is no the consideration of priority, various gfp frame can be intersected in transmission channel and transmit.After receiving terminal receives data flow, carry out decapsulation, read out client data frame, IDLE frame and customer account management frame, and network management information and client's fail message are processed, to obtain relevant information in different GFP client's frame.The utilance of method to bandwidth of this transmission network management information improves a lot, and generally when there being data service to transmit, can be attended by the transmission of network management information.
Because the present invention uses customer account management frame to transmit network management information, the network management information of source is sent according to the demand of the network equipment, the simultaneously network management information uploaded of the acquisition egress of also timing, the transmission of network management information together sends with data service, when namely only having data services, now just judge whether the client's webmaster frame received is correct network management information.The benefit done like this is that network management information need not take more bandwidth resources, and causes the recycling of passage to affect the transmission of data service.
After adopting the inventive method, by when transmitting customer account management frame, expand payload letter head UPI value in GFP client's webmaster frame, network management information, to represent the network management information of transfer equipment, then carries out after GFP encapsulation according to the transmission of GFP client's frame by the value that definition wherein retains.
In the middle of the application of customer account management frame, customer account management frame is that the realization of transfer system management function provides necessary communication port.Because customer account management frame is transparent transmission for network management information, therefore in customer account management frame, transmit which kind of information and realize which kind of function independent of outside GFP category, the conveying function of network management information has nothing to do with transmission content, can avoid transmitting content to the impact of transmission efficiency.Because GFP client's frame head can adapt to different application structures, and in transmission and the correctness only needing to be determined by the associated byte in GFP client's frame head network management information when accepting network management information, then the payload content read in GFP client's frame obtains relevant network management information, be different from SDH and rely on its overhead byte to realize some network management function, do not need there is any change in the management layer of network in escalation process, be easy to upgrading and the maintenance of webmaster.
Adopt this webmaster transfer mode can to network device initiating configuration; Set up and amendment network topological diagram; The state of the configuration and monitoring network equipment; There is the management function to the network equipment, the inquiry of network enabled device data, printing, output and consistency check; Possesses online upgrading function; On network apparatus management system, configuration is completed in patterned mode; Can detect the performance parameter of the different port of various equipment, specifically comprise and arranging performance parameter collection mode, data acquisition and thresholding, the inquiry of performance data, display and statistical analysis, can also be stored in dump to performance data; Can inquire about fast the various interface alarm of various equipment, carry out showing and adding up, specifically comprise display alarm type, alarm grade and alarm status, and effectively can correct network failure, timely recovery business etc.
The present invention is not limited to above-mentioned execution mode, and for those skilled in the art, under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications are also considered as within protection scope of the present invention.The content be not described in detail in this specification belongs to the known prior art of professional and technical personnel in the field.
Claims (7)
1. adopt Generic Framing Procedure to transmit a method for network management information, it is characterized in that, comprise the steps:
Transmitting terminal comes then in data flow, judge whether this data flow is customer account management frame by the payload type instruction thresholding of data flow, if customer account management frame, indicate in thresholding at its user's payload being use in the future retains, choose arbitrarily a value as mark, what load in expression customer account management frame payload field is network management information, then will load the customer account management frame of network management information by transmission channel transmission;
After described transmitting terminal selectes the value as user's payload instructions field of mark, in the first character joint fill marker data of the payload information of described customer account management frame, form Generic Framing Procedure webmaster frame, and by transmission channel transmission;
After receiving terminal receives data flow, carry out Generic Framing Procedure decapsulation, read payload type instruction thresholding to judge to receive information type, if data flow is the customer account management frame comprising network management information, then by the relation of user's payload instructions field setting, row relax is flow to data, and obtain the network management information in corresponding payload field;
When the data stream packets that receiving terminal receives is containing network management information, then the value of user's payload instructions field of this data flow and the first character joint of payload information is read, if data are identical with flag data in first character joint, be then Generic Framing Procedure webmaster frame, process and obtain the network management information in user's payload instructions field.
2. the method adopting Generic Framing Procedure to transmit network management information as claimed in claim 1, it is characterized in that: when payload type instruction thresholding=000 of described data flow, transmitting terminal judges that this data flow is as client data frame, is sent to receiving terminal by this client data frame by transmission channel.
3. the method adopting Generic Framing Procedure to transmit network management information as claimed in claim 2, it is characterized in that: if described receiving terminal receives payload type instruction thresholding=000 of data flow, then this data flow is client data frame, directly processes data message in general framing procedure frame.
4. the method adopting Generic Framing Procedure to transmit network management information as claimed in claim 1, it is characterized in that: described network management information transmits based on customer account management frame, transfer mode in Transfer pipe is identical with client data frame, does not have priority therebetween.
5. the as claimed in claim 1 method adopting Generic Framing Procedure to transmit network management information, is characterized in that: described transmitting terminal judge this data flow be customer account management frame according to being: payload type instruction thresholding=100 of described data flow.
6. the method adopting Generic Framing Procedure to transmit network management information as claimed in claim 1, it is characterized in that: if when in customer account management frame, user's payload instruction thresholding is 0,000 0001 or 0,000 0010, show that client signal is lost or synchronous characteristic is lost, belong to and send client's fail message, transmitting terminal Auto-writing user payload instruction thresholding, after Client Signal Fail information is carried out Generic Framing Procedure encapsulation, be sent to receiving terminal by transmission channel.
7. the as claimed in claim 6 method adopting Generic Framing Procedure to transmit network management information, is characterized in that: after the data flow received when receiving terminal contains client's fail message, directly reading client fail message.
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Effective date of registration: 20170406 Address after: 430074 East Lake high tech Development Zone, Hubei Province, No. 6, No., high and new technology development zone, No. four Patentee after: Fenghuo Communication Science &. Technology Co., Ltd. Address before: 430074 Hubei Province, Wuhan East Lake new Dongxin Road No. 5 East Building optical communication industry Patentee before: Wuhan Fenghuo Network Co., Ltd. |