CN1149786C - Maintenance and management method for user access network - Google Patents
Maintenance and management method for user access network Download PDFInfo
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- CN1149786C CN1149786C CNB991161793A CN99116179A CN1149786C CN 1149786 C CN1149786 C CN 1149786C CN B991161793 A CNB991161793 A CN B991161793A CN 99116179 A CN99116179 A CN 99116179A CN 1149786 C CN1149786 C CN 1149786C
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Abstract
The present invention relates to a maintenance and management method for user access networks. An FCP (a far-end controlling point) card is installed between network management equipment and the equipment of a user access network; the FCP card accesses the managed equipment of the access network in an LAPD mode and is in communication with a network manager in a postbox mode; time slots on the card are used as communication channels, and the network manager can use a plurality of FCP cards to maintain the equipment; besides, 30 time slots of 2MHW on one card can be used as the communication channels, and communication channels can be extended so as to realize multi-channel and multipoint centralized maintenance and management. The present invention has the advantages of no occupation of network address resources, flexible expansion and high communication efficiency.
Description
The present invention relates to the transmission technology of digital information, particularly is the maintenance and management technology of the network of feature with the function of exchange.
The development of modern technologies, it is mainly represented is development of computer; And the main contents of computer technology and information sharing are promoted and are realized by computer network.A wide area network (WAN) that connects the Local Area Network of many computers or connect a plurality of different location LAN all needs the network equipment is carried out maintenance and management, is commonly referred to as webmaster; Webmaster is implemented configuration management, performance management, safety management and the fault management to the network equipment, with the network operate as normal that guarantees to be safeguarded, provides the operating rate of network.A most important aspect of computer application is communication, is the communication network of the communication equipment composition of core with the computer, is called telecommunications network; Telecommunications network be divided into again connect long-distance end office (EO) with the toll network on top and connect long-distance end office (EO) and Local Exchange and Local Exchange between trunk network, and three kinds of user access networks; Trunk network comprises local switch, Cross Connect equipment, ATM node and radio and television equipment.Users remove to use telecommunications network by Access Network, thereby reach the purpose of communication.In a communication instance, the isdn user will use for example local switch of trunk network,---subscribers feeder---junction box---distribution cable---cross-connecting box---main cable that need pass through user terminal, could arrive local switch, line facility described herein and transmission facilities promptly are described user access networks.
According to the suggestion of ITU-T (ITU-T), the definition of Access Network as shown in figure 11.
The Access Network webmaster of prior art, it is the method for network operation and management, be that network passes through serial ports (R S 232) or utilize the network address of managed device to conduct interviews to realize configuration management, performance management, safety management and the fault management to equipment, guarantee the normal operation of on-line apparatus, for the user provides reliable operation equipment.And the performance quality of the communication interface of webmaster and equipment room has determined the quality of webmaster to the equipment control performance.The flexibility that following surface analysis expands from communication efficiency, communication port, maintenance cost and four aspects analysis serial ports of multiple spot centralized maintenance feasibility and Ethernet are as the performance of network management communication interface.
| Serial ports | Ethernet interface | |
| Communication efficiency | Communication throughput is little.Communication efficiency is low.When data traffic is big, become communication performance bottleneck.Communication performance is low, and transmission range is limited. | Communication throughput is big.Communication efficiency height, communication performance are influenced by communication flows. |
| The communication port expandability | The corresponding communication port of serial ports, the expansion capacity of communication port is limited by serial port resource. | A port, the corresponding communication port of network address, the communication port expansion capacity is subjected to network resource constraints. |
| Maintenance cost | Cost is low. | Local maintenance is simple, and cost is low, but remote maintenance cost height. |
| Centralized maintenance | Multiple spot centralized maintenance poor ability, webmaster management equipment quantity seldom. | Multiple spot centralized maintenance ability, webmaster management equipment limited amount. |
Along with increasing of the network equipment, the complexity of networking, webmaster and communication between devices flow are also increasing; As can be seen, there are obvious limitation in serial ports and Ethernet interface dual mode from above-mentioned comparison.
At the deficiencies in the prior art, the present invention proposes a kind of method of user access networks maintenance and management, based on the LAPD mode, realizes the maintenance management of webmaster to equipment by the FCP card, reaches four purposes:
1. communication efficiency: a time slot on the FCP card is as a communication port, and communication throughput is big, the communication efficiency height, and communication performance is good.
2. communication port expandability: a webmaster can use 4 FCP cards to come service equipment, can use 30 time slots as communication port on the 2MHW on FCP card, one is used passage to be multiplexed into a plurality of communication ports according to the flow size to manage a plurality of equipment.Communication port expands flexibly like this.
3. maintenance cost: maintenance cost is low, by one or more FCP card, and the HW resource that reallocation needs.
4. multichannel, the multiple spot centralized maintenance of many equipment: a time slot can extend by the 2M line, uses the equipment on the different time-gap management diverse location wherein, realizes multichannel, the multiple spot centralized maintenance of many equipment.
Above-mentioned purpose of the present invention can be passed through to realize by the following technical solutions:
A kind of method of user access networks maintenance and management is adopted in design, at the network management equipment of implementing webmaster with bear between the user access networks equipment of maintenance management, FCP (Forward Control Point far-end control point) card is installed; This FCP cartoon is crossed LAPD (Link Access Protocol D link access protocol D) mode and is visited the managed device of Access Network, and with the same network management communication of the mode of mailbox;
Described method comprises following steps:
A. according to software flow P1 operation FCP card board software; The operation of this software comprises again:
Physical layer block,
The data link layer module,
The message scheduler module,
Memory allocating module,
With the operation of timer distribution module program with cooperate;
B. insert realization of Communication between webmaster and the FCP card; This realization of Communication comprises again:
Physical layer block,
Link layer module,
The communication layers module,
With the operation of application layer module program with cooperate.
The drawing of accompanying drawing is described as follows:
Fig. 1 is the system group network figure of user access networks maintenance and management method of the present invention;
Fig. 2 is the system design flow chart of user access networks maintenance and management method of the present invention;
Fig. 3 is the schematic diagram of FCP card board software flow process P1 of the present invention;
Fig. 4 is FCP card physical layer annexation figure;
Fig. 5 is a FCP card data link layer state transition program P2 flow chart;
Fig. 6 is FCP card message scheduling graph P3;
Fig. 7 is FCP card and the mailbox management program P4 flow chart that inserts webmaster;
Fig. 8 realizes program P5 flow chart for inserting the webmaster link layer functionality;
Fig. 9 is for inserting webmaster link layer communications state machine hypervisor P6 flow chart;
Figure 10 realizes program P7 flow chart for the Access Network communication layers;
Figure 11 is the schematic diagram of the definition of Access Network that ITU-T advises.
Below in conjunction with accompanying drawing in detail a most preferred embodiment of the present invention is described in detail.
The present invention proposes a kind of brand-new user access networks maintenance management method, carries out webmaster with the network management equipment of implementing webmaster to the mode that the user access networks equipment that bears maintenance management conducts interviews, and it is characterized in that:
At the network management equipment 3 of implementing webmaster with bear between the user access networks equipment 5 of maintenance management, FCP (Forward Control Point far-end control point) card 1 is installed; This FCP card 1 is visited the managed device 5 of Access Network by LAPD (Link Access ProtocolD link access protocol D) mode, and communicates by letter with webmaster 3 in the mode of mailbox;
A time slot on the FCP card is as a communication port, and communication throughput is big, the communication efficiency height, and communication performance is good.
A webmaster can use 4 FCP cards to come service equipment, can use 30 time slots as communication port on the 2MHW on FCP card, and one is used passage to be multiplexed into a plurality of communication ports according to the flow size to manage a plurality of equipment.Communication port expands flexibly like this.By one or more FCP card, the HW resource that reallocation needs, maintenance cost is low.
The multiple spot centralized maintenance: a time slot can extend by the 2M line, uses the equipment on the different time-gap management diverse location wherein, realizes multichannel, the multiple spot centralized maintenance of many equipment.
Use the LAPD mode to realize communicating by letter of webmaster and equipment room, adopt mail box fashion to read and write data between webmaster and FCP card, the E1 interface that the mailbox size is crossed standard for the 8Kbyte.FCP cartoon links to each other with switch or Access Network, again by inner semipermanent connection, set up the HDLC path of a plurality of 64Kbit/s with a plurality of Access Network main control modules.On the HDLC passage, the FCP card is realized the HDLC controlling links by the Q.921 agreement of standard, transmits the maintenance management data, realizes the jumbo centralized maintenance of FCP card docking networking multimode, improves webmaster centralized maintenance ability.
Webmaster can be simultaneously managed a plurality of access network equipments by four or more a plurality of FCP card.A FCP card provides the HDLC path of 30 64K.Because the FCP card adopts the E1 interface of standard, can be positioned at exchanger side or access network equipment side so insert webmaster.Be positioned at exchanger side, need by inner semipermanent connection, the disparate modules that the time gas exchange on the FCP card is connected to the access network equipment side gets on.Be positioned at the Access Network side, need, the time gas exchange of FCP card is connected to different cascade module gets on by semipermanent connection.
Described method comprises following steps:
A. according to software flow P1 operation FCP card board software; The operation of this software comprises following five steps again:
A. physical layer block 111 systems form as Fig. 4, send and reception message with 64K speed, and standard E1 is provided interface;
B. data link layer module 112 is moved according to data link layer state transition program P2, its main task is with Q.920, Q.921 the LAPD agreement for the basis carry out data link foundation, keep and remove, realize error free transmission, provide point-to-point link, the reliable delivery of guarantee information;
Because the dlci value of every HDLC link is all fixed, so there is not the TEI rule of management.Therefore Q.921 distribute four kinds of relevant states not set up state with TE1 to replace in the accessories B with link.So the data link layer entity has five kinds of states: link is not set up state (NOT_ESTABLISHED), wait link setup state (ESTABLISHING), multiframe mode of operation (MULTI_I), timer returns to form (TIMER_RECOVERY) and wait for release condition (RELEASING).
C. message scheduler module 113 is moved according to scheduling graph P3, when the message that mails to certain process is arranged, this message is put on and the corresponding type of message of process, send into the formation of message bag again, to treat operating system in the scheduling circulation, the message in the formation of taking-up message bag is delivered to the respective objects process and is gone to handle;
Native system has four kinds of different type of messages, is respectively M_TIMER_OUT, M_LAYER1_LAYER2, M_LAYER3_LAYER2, LAYER2_LAYER
2. four kinds of corresponding four processes of type of message are deposited in the formation of message bag.When mailing to the message of certain process, message is put on and the corresponding type of message of process, sends into the formation of message bag, and in the scheduling circulation of operating system, message of taking-up is delivered to and gone in the corresponding target process to handle from the formation of message bag.
D. memory allocating module 114 adopts the dynamically internal memory operation mode of application, define a sufficiently long memory block formation during initialization, and memory block carried out effective length definition and sign distributes, represent the idle of memory block or take with MEM_FREED or MEM_ALLOCED; Other has formation BufFreeQ and Buflnuse, and each element when initialization among the BufFreeQ is deposited its call number in the memory block formation, and this formation is used for the free memory block of collection procedure release in service; Each element among the Buflnuse is changed to IDLE, when certain process will be applied for an internal memory, the memory block formation is scanned in the next position of the memory block that is assigned to since the last time, when finding a memory block that is masked as MEM_FREED, just this sign is changed to MEM_ALLOCED, the element that call number among the Buflnuse is identical is changed to IN_USE, and the pointer of this memory block is returned to the process of application internal memory; When the content in the memory block was die on, relevant process in time discharged it, and its sign is changed to MEM_FREED, again the BufFreeQ formation was put in the index of this memory block;
Length of definition is 800 memory block formation when system initialization, and the effective length of each memory block is 160 bytes, and each memory block also has an assignment flag, when initialization all signs is changed to MEM_FREED.
A main feature of native system memory management is: the new buffer stopper of (as the mailbox external interrupt) application when only externally incident takes place, the address of only transmitting buffer stopper when information flows afterwards in plate, no longer duplicate buffer stopper, improved the operational efficiency of program so greatly, also saved internal memory.
E. timer distribution module 115 is carried out the timer distribution according to dynamical fashion, when initialization, define a timer matrix, each element of this matrix is represented a timer of putting the IDLE attitude, in program running, will put IDLE attitude timer and distribute to the process of application timer, and timer will be changed to the AVAILABLE attitude; CPU provides the cycle interruption timer of a 10ms, and when interrupting arriving for one, the linage-counter of timer matrix just increases 1 by mould 50, and scans timers all in this row, forms uniform timer group to be allocated in 500ms;
Defined a 50*16 timer matrix when initialization, each element of matrix is represented a timer of putting the IDLE attitude, can distribute to the process of application timer with putting IDLE attitude timer in program running, and timer is changed to the AVAILABLE attitude.CPU80186 provides the cycle interruption timer of a 10ms, and when interrupting arriving for one, the linage-counter of timer matrix just increases 1 by mould 50, and scans 16 all in this row timers.So just formed 800 timers to be allocated that are distributed in the 500ms, this just can guarantee at any time to apply for having equal opportunities of timer, and it is too heavy to avoid simultaneously some particular moments in one-period to be specifically designed to the special duty of handling timer.
B. insert realization of Communication between webmaster 3 and the FCP card 1;
This realization of Communication comprises following four steps again:
A. physical layer block 311 is by mailbox management program P4 operation, the control that realizes mailbox with flag FLAG shifts, the Frame that the FCP card reports is handled in the webmaster side, the data of reading are reported and submitted link layer process, and the link layer Frame is handed down to the FCP card by the mailbox processing module;
To mailbox management, major function comprises the mailbox initialization, read-write mailbox, the mailbox that resets, release mailbox resource.
FCP card and webmaster are that flag by mailbox realizes to the control of mailbox, when webmaster has the right to operate mailbox, carry out the operation of read-write mailbox.Reading the Frame that the mailbox processing module mainly reports the FCP card handles in the webmaster side.From mailbox, read, if data are arranged then deliver to link layer process.Write the mailbox processing module and mainly the link layer Frame is handed down to the FCP card.
B. link layer module 312 is realized program P5 operation according to link layer functionality, and presses P6 and implement the state machine management, carry out the Layer 2 data frame and tear the processing of frame framing open, and the foundation of link and release, step is as follows:
The data frame type that the analysis of Layer 2 data frame processing module is read from mailbox carries out framing and handles, and forms complete Layer 2 data frame; And according to this frame type, judgement is the link layer communications frame, or upper-level data frame, and to analyze the Frame read be the link layer Frame, or application data frame; The link layer Frame then carries out condition managing in this way, and application data frame is then sent to communication layers in this way; Equally, tear communication layers Frame or link layer communications frame open frame and handle, its result deposits in and receives in the queue buffer, and the data of this queue buffer are write mailbox; In case detect the full or time slot Flow Control of mailbox, then data no longer write mailbox in the formation, wait for that Flow Control cancellation or mailbox write in the time of can writing again; When queue buffer is full, abandon Frame the oldest in the formation; Described condition managing machine also carries out the processing that continues of link communication to the communication abnormality situation;
C. communication layers module 313 realizes program P7 operation according to communication layers, the enforcement Route Selection, and the high-rise order of carrying, command process structure and control result carry out three layer data frames and tear frame, framing processing open;
D. application layer module 314 is distributed to the server of each self-application with upper-level data frame, or receives from this data in server frame and be distributed to communication layers.
By above step, realization is with the configuration management to the user access networks equipment that bears maintenance management of the network management equipment of implementing webmaster, performance management, safety management and fault management, guarantee the normal operation of on-line apparatus, for the user provides reliable operation equipment.
Compare with prior art, the advantage of user access networks maintenance and management method of the present invention is:
A time slot on the FCP card does not take web site resource as a communication port, and communication throughput is large, and communication efficiency is high; A webmaster can come service equipment with 4 above FCP cards, can use 30 time slots as communication port on the 2MHW on FCP card, a use passage can be multiplexed into a plurality of communication ports according to uninterrupted and manage a plurality of equipment, and communication port expands flexibly; Maintenance cost is low, by one or more FCP card, and the HW resource that reallocation needs; A time slot can extend by the 2M line, uses the equipment on the different time-gap management diverse location wherein, realizes multichannel, multiple spot centralized maintenance and the management of many equipment.
Claims (10)
1. a user access networks maintenance and management method is carried out to the mode that the equipment that bears maintenance management conducts interviews with the equipment of implementing webmaster, it is characterized in that:
Between network management equipment (3) and user access networks equipment (5), far-end control point card (1) is installed; This far-end control point card (1) is visited the managed device (5) of one or more Access Networks by link access protocol D mode, and communicates by letter with the same webmaster of the mode of mailbox (3);
Described method comprises step:
A. according to card board software process flow operation far-end control point, far-end control point card board software; The operation of this software comprises following five steps again:
A. physical layer block (111) provides standard E1 interface;
B. data link layer module (112) is according to data link layer state transition program running, and with Q.920, Q.921 the LAPD agreement is that error free transmission is realized on the basis;
C. move message scheduler module (113);
D. memory allocating module (114) adopts the dynamically internal memory operation mode of application, realizes enabling and release management memory block;
E. timing allocation module (115) is carried out the timer distribution according to dynamical fashion, guarantees whenever to apply for having equal opportunities of timer;
B. insert realization of Communication between webmaster (3) and the far-end control point card (1); This realization of Communication comprises following four steps again:
A. physical layer block (311) is handled the information in the mailbox by the mailbox management program running;
B. link layer module (312) is realized program running according to link layer functionality, and implements the state machine management by link layer communications state machine hypervisor, carries out the Layer 2 data frame and tears the processing of frame framing open, and the foundation of link and release and Link State are safeguarded;
C. communication module (313) realizes program running according to communication layers, implements Route Selection, carries high-rise order, and command process structure and control result carry out three layer data frames and tear frame, framing processing open;
D. application layer module (314) is distributed to the server of each self-application with upper-level data frame, or receives from this data in server frame and be distributed to communication layers.
2. according to the described user access networks maintenance and management of claim 1 method, it is characterized in that:
Described webmaster (3) is connected with 4 or 4 above far-end control point cards (1) simultaneously.
3. according to claim 1 or 2 described user access networks maintenance and management methods, it is characterized in that:
Described far-end control point card (1) provides 30 64Kbit/S high speed data link control channels for network operation and management.
4. according to the described user access networks maintenance and management of claim 3 method, it is characterized in that:
The capacity of the mailbox of setting up between described far-end control point card (1) and webmaster (3) of communicating by letter (131) is 8KByte.
5. according to the described user access networks maintenance and management of claim 3 method, it is characterized in that:
Described data link layer module (112) is when operation, and its data link layer entity has 5 kinds of states.
6. according to described user access networks of claim 5 and management method, it is characterized in that:
Described data link layer module (112) is when operation, and 5 kinds of states of its data link layer entity are:
Link is not set up state, wait link setup state, multiframe mode of operation, timer returns to form and wait for release condition.
7. according to the described user access networks maintenance and management of claim 3 method, it is characterized in that:
Described message scheduler module (113) operation information type is divided into 4 kinds, and corresponding 4 processes of these 4 kinds of type of messages are deposited in the formation of message bag.
8. be maintained in management method according to the described user access networks of claim 7, it is characterized in that:
4 kinds of type of messages of described message scheduler module (113) operation are respectively: M_TIMER_OUT, M_LAYER_LAYER2, M_LAYER3_LAYER2 and LAYER_LAYER.
9. according to the described user access networks maintenance and management of claim 3 method, it is characterized in that:
Described memory allocating module (114) adopts the dynamically internal memory operation mode of application, and the memory block queue length that defines during initialization is 800, and each memory block effective length is 160 bytes.
10. according to the described user access networks maintenance and management of claim 3 method, it is characterized in that:
Described timer distribution module (115) defines a timer matrix when initialization, each element of this matrix is represented a timer of putting the IDLE attitude, in program running, will put IDLE attitude timer and distribute to the process of application timer, and timer will be changed to the AVAILABLE attitude; CPU provides the cycle interruption timer of a 10ms, when interrupting arriving for one, the linage-counter of timer matrix just increases 1 by mould 50, and scan timers all in this row, form uniform timer group to be allocated in 500ms: the size of the formed timer matrix of this timer group is 50 row * 16 row.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB991161793A CN1149786C (en) | 1999-05-10 | 1999-05-10 | Maintenance and management method for user access network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB991161793A CN1149786C (en) | 1999-05-10 | 1999-05-10 | Maintenance and management method for user access network |
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| CN1273472A CN1273472A (en) | 2000-11-15 |
| CN1149786C true CN1149786C (en) | 2004-05-12 |
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| CNB991161793A Expired - Fee Related CN1149786C (en) | 1999-05-10 | 1999-05-10 | Maintenance and management method for user access network |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US7409517B2 (en) * | 2001-10-01 | 2008-08-05 | Oracle International Corporation | Dynamic and automatic memory management |
| US7076511B1 (en) * | 2002-05-07 | 2006-07-11 | Oracle International Corporation | Simplified deallocation of memory for programming objects |
| CN101237406B (en) * | 2008-02-29 | 2011-12-07 | 中兴通讯股份有限公司 | A realization method for D channel link access regulation |
| CN101447944B (en) * | 2008-12-15 | 2011-07-20 | 华为技术有限公司 | Access method, device and system |
| CN101431436B (en) * | 2008-12-17 | 2012-06-13 | 中兴通讯股份有限公司 | Method and apparatus for signaling message transmission through Q.921 link |
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