CN101483559A - Monitoring method for distributed IPTV service transmission quality - Google Patents
Monitoring method for distributed IPTV service transmission quality Download PDFInfo
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Abstract
The invention relates to a distributed IPTV service transmission quality monitoring method, and the method is used for monitoring the quality of IPTV service flow carried by a large-scale IP network and influence of the network on the IPTV service flow. The invention adopts a central server and a plurality of IPTV service quality monitoring instruments, a bypass for network data is provided at the access end of an IPTV service quality monitoring instrument, a packet-grabbing analysis of network data is performed in the situation that the network is assured to be run normally; data having important reference sense to the quality of the IPTV service is found out through processing and analyzing bulk information; the central server and the IPTV service quality monitoring instruments are communicated with each other through a network protocol capable of realizing semantic analysis, and safety of the transmission of information can be assured by adopting an information safety assuring system; network fault generating points and bottleneck points of network performance can be identified intelligently through the analyzing of monitored data, and corresponding solutions can also be provided.
Description
Technical field
The present invention relates to IPTV quality of service monitoring technology, particularly relate to a kind of monitoring method of distributed IPTV service transmission quality.
Background technology
Measure continuous increase IPTV client, under the ever-increasing situation of IPTV Business Stream, be to guarantee the normal operation of network, give user's favorable experience, the supervision service of telecom operation level need be provided for Virtual network operator and terminal use.
Present network monitoring system can only simply be monitored link bandwidth mostly, can see how many bandwidth of certain port data occupancy in the above, but it has no idea to carry out statistics and analysis at Business Stream.Its monitoring scheme that adopts mainly is the centralized monitoring system scheme in garden.The centralized monitoring system scheme in garden is meant that the flow information of collecting each network equipment port by network management center adds up.Its advantage is simple in structure, and cost of investment is relatively low.Shortcoming is directly data stream to be monitored, and easily network quality is exerted an influence; Be not suitable for extensive and high-speed access network monitoring in real time and management are caused the blind spot of network management easily; Be not suitable for complex network is monitored; Be not easy to unified management, can't understand whole network conditions in real time; Need keeper's garden management one by one, the maintenance cost height; After network size was increasing, the unification of data and coherency management problem will come out.As seen, though traditional monitoring system cost is low, investment can't be guaranteed.
In sum, the subject matter of traditional monitoring system existence is as follows:
1, can't under the situation that network operation do not exerted an influence, network be monitored;
2, can't monitor in real time big capaciated flow network and network carrying Business Stream;
The demand that 3, can't adapt to the complicated network structure, network size expansion;
4, complex management, maintenance cost is higher.
Summary of the invention
Technical problem to be solved by this invention is exactly to provide a kind of for the defective that overcomes above-mentioned prior art existence
Purpose of the present invention can be achieved through the following technical solutions: a kind of monitoring method of distributed IPTV service transmission quality, it is characterized in that, and may further comprise the steps:
(1) central server is set;
(2) arrange IPTV quality of service monitor at network monitor point, network data is carried out bypass at its incoming end;
(3) central server is connected foundation with IPTV quality of service monitor, and the essential information of backup IPTV quality of service monitor;
(4) central server is configured the running parameter of IPTV quality of service monitor;
(5) IPTV quality of service monitor enters the information monitoring pattern, the quality information that monitors is reported, and this information is carried out this locality preserve;
(6) central server shows the quality information that receives in real time, is convenient to the keeper and checks current network state, simultaneously quality information is unified backup;
(7) when IPTV quality of service monitor satisfies the mode of operation switching condition, enter the failure diagnosis mode of operation, IPTV quality of service monitor is gathered local IPTV Business Stream information, carry out preliminary statistical analysis after, the unification of IPTV Business Stream is uploaded to central server;
(8) after central server is analyzed the IPTV Business Stream information of uploading, fault is positioned, issue Fault Diagnosis Strategy;
(9) IPTV quality of service monitor carries out malfunction elimination according to the diagnosis strategy, after fault is got rid of, sends troubleshooting information to central server;
(10) central server is confirmed troubleshooting information;
(11) after IPTV quality of service monitor is received confirmation, switch to the information monitoring mode of operation again.
Described essential information comprises IP address, the monitor number information of IPTV quality of service monitor.
Described running parameter comprises information report cycle, clock cycle, IPTV Business Stream to be monitored, the alarm threshold threshold value of each Business Stream.
Compared with prior art, the present invention has the following advantages:
1. can be fit to extensive Access Network IPTV Business Stream is monitored and managed, guarantee real-time, comprehensive, the validity of monitoring;
2. can work out different monitoring indexes to different IP TV Business Stream, realize monitoring targeted, hommization;
3. safeguard that the keeper can realize the whole network is monitored in real time at the central server end, understands the IPTV Business Stream quality condition that whole network carries easily;
4. realize easily with other operation subsystem interfaces;
5. the system expandability is strong, can adapt to the constantly broadband access network scale of development, the protection investment;
6. system scalability is strong, when system expands, can not influence the carrying out of broadband services operation;
7. user data is concentrated and is left the central machine room server in, guarantees the unified maintenance of data;
8. because central server and IPTV quality of service monitor all have database separately, only need to realize that backuping each other of critical data gets final product with consistent, in the reliable data maintenance amount that can reduce each subsystem simultaneously of assurance system.
Description of drawings
Fig. 1 is a flow chart of the present invention;
Fig. 2 is the bypass schematic diagram of IPTV quality of service monitor of the present invention;
Fig. 3 is the schematic diagram of embodiments of the invention.
Embodiment
The invention will be further described below in conjunction with accompanying drawing.
As Fig. 1,2, shown in, a kind of monitoring method of distributed IPTV service transmission quality may further comprise the steps:
(1) central server is set;
(2) arrange IPTV quality of service monitor at network monitor point, network data is carried out bypass at its incoming end;
(3) central server is connected foundation with IPTV quality of service monitor, and the essential information of backup IPTV quality of service monitor;
(4) central server is configured the running parameter of IPTV quality of service monitor;
(5) IPTV quality of service monitor enters the information monitoring pattern, the quality information that monitors is reported, and this information is carried out this locality preserve;
(6) central server shows the quality information that receives in real time, is convenient to the keeper and checks current network state, simultaneously quality information is unified backup;
(7) when IPTV quality of service monitor satisfies the mode of operation switching condition, enter the failure diagnosis mode of operation, IPTV quality of service monitor is gathered local IPTV Business Stream information, carry out preliminary statistical analysis after, the unification of IPTV Business Stream is uploaded to central server;
(8) after central server is analyzed the IPTV Business Stream information of uploading, fault is positioned, issue Fault Diagnosis Strategy;
(9) IPTV quality of service monitor carries out malfunction elimination according to the diagnosis strategy, after fault is got rid of, sends troubleshooting information to central server.
(10) central server is confirmed troubleshooting information.
(11) after IPTV quality of service monitor is received confirmation, switch to the information monitoring mode of operation again.
Described essential information comprises IP address, the monitor number information of IPTV quality of service monitor; Described running parameter comprises information report cycle, clock cycle, IPTV Business Stream to be monitored, the alarm threshold threshold value of each Business Stream.
The present invention adopts a central server and a plurality of IPTV quality of service monitor equipment, IPTV quality of service monitor equipment is deployed to ensure effective monitoring and control of illegal activities in the network-critical node, be connected with central server by network, IPTV quality of service monitor reports central server with the IPTV service quality information that monitors, and central server is configured, manages IPTV quality of service monitor.At the defective that conventional art exists, the present invention proposes corresponding solution:
1, at IPTV quality of service monitor incoming end network data is carried out bypass, bypass equipment (TAP) is supported monitor corresponding interface type, with in the comprehensive accesses network of wire rate, reaches noiseless, the no delay monitoring of network.Its bypass equipment line graph as shown in Figure 2, the quality of service monitor is connected with bypass equipment (TAP) by photoelectricity dress parallel operation.
2, adopt the network packet capturing hardware of gigabit level, and high performance analyzing and processing environment, to reach requirement to the real-time of monitoring.
3, can change the method for position, monitoring point by increasing the monitoring point number, reach the requirement that adapts to network expansion, adapts to the network condition complexity, the purpose of each node comprehensive monitoring of network.
4, the keeper carries out unified management at the central server end to IPTV quality of service monitor, reduces maintenance cost.
IPTV quality of service monitor is in the status of equity in network, can realize information interaction by central server, the cooperation monitoring.Communicating by letter between central server and the IPTV quality of service monitor adopts information security to guarantee that system guarantees the fail safe of message transmission.IPTV quality of service monitor has two kinds of main mode of operations: information monitoring pattern and fault diagnosis model.When the network operation situation is normal, IPTV quality of service monitor is normally operated under the information monitoring pattern, reports statistical information, and network performance and IPTV quality of service are monitored; Unusual when the appearance of IPTV quality of service, IPTV quality of service monitor switches under the fault diagnosis model, reports fault IPTV Business Stream, helps user location and phase-split network fault.IPTV quality of service monitor is had by the trigger condition of information monitoring mode switch to fault diagnosis model: 1, the monitoring system keeper triggers by hand; 2, IPTV quality of service monitor monitors IPTV quality of service index above predetermined alarming threshold value; 3, it is unusual that IPTV quality of service monitor detects the mutual appearance of each part of monitoring system in the network.In order to ensure the harmonious work of each distributed monitoring point, monitoring system is by NTP clock server and respective protocol, and the calculating clock of each monitoring point is guaranteed consistency synchronously.
Embodiment
High performance wideband information special project (3Tnet special project) is the national great scientific and technological engineering project of State Council's calendar year 2001 No. 8 literary composition approvals.3TNet was in test operation on October 15 in 2005, and system operation situation is from opening entry on November 14th, 2005.3TNet network flow-medium business mainly comprises VOD (network video-on-demand), IPTV (TV of IP based network), VoIP (IP phone), business of networking.From whole structure, the network reliability raising of still needing, the service quality improvement of still needing, along with the client measures continuous increase, Business Stream constantly increases, and network faces is test more.Therefore, need a monitoring system to provide safeguard for the network reliability service.
Fig. 3 is a present embodiment: the schematic diagram that adopts 3TNet streaming media service monitoring system of the present invention.
3Tnet is being carried out in the IPTV quality of service observation process, need analyze, therefore the monitoring point of different segment just must be set message (signaling), video flowing and the audio stream of different segment.In the monitoring programme of the IPTV of reality quality of service, the monitoring point mainly is divided into these two types of 3Tnet terminal accessing-point and 3Tnet Access Network access points.The 3Tnet terminal accessing-point is corresponding to 10/100M electricity mouth, and 3Tnet Access Network access point supports the TAP of this interface to come the bypass data flow corresponding to 1G or 10G single mode optical interface so system adopts.The TAP model is DATACOM 10/100 1X1 Copper Tap.By being that the situation of 64～1518 bytes is carried out the bypass test to the packet size, we reach a conclusion: the TAP bypass has realized need not disconnecting link, can dynamically insert the equipment that network is monitored and analyzed; The time that can not disturb frame to arrive, the frame that yet can not make the mistake statistics is incomplete, and comprehensive network perspective is provided; Invisible, interference-free accesses network; With at wire rate accesses network flow all sidedly; Provide ＂ port mirror image ＂ to be used for the function of network analysis.
The 3TNet monitoring system adopts the Linux soft ware platform, packet capturing when Intel E1000-7.2.7 network interface card is realized the network implementation of gigabit level, by analysis is caught, unpacked to the bypass data bag, obtain the network quality information of needs and the business state information of the network carrying.
The IPFIX agreement is adopted in communicating by letter between IPTV quality of service monitor and the central server, has realized the protocal analysis based on semanteme, satisfies the requirement of monitoring system transmission information diversity.Central server and international up-to-date information security assurance standard-ISO15408 (Common Criteria, the Common Criteria) guidance system of the employing of communicating by letter between the IPTV quality of service monitor are to guarantee the fail safe of message transmission.
As shown in Figure 1, the concrete monitoring step of present embodiment 3TNet monitoring system is as follows:
(1) in network center central server is set, determines the IP address of central server;
(2) arrange IPTV quality of service monitor at the network-critical node, IPTV quality of service monitor sends the request of connecting by agreement to central server after obtaining self IP address on the network;
(3) central server sends IPTV quality of service monitor and connects confirmation, connects and sets up; The central server client database is to essential information backups such as the IP address of the IPTV quality of service monitor that connects, monitor number information;
(4) central server is configured IPTV quality of service monitor according to the concrete needs of IPTV quality of service monitoring; Deploy content comprises the information report cycle of IPTV quality of service monitor, clock cycle, the IPTV Business Stream that monitor, the alarm threshold threshold value of each Business Stream etc.
(5) IPTV quality of service monitor enters the information monitoring mode of operation, the network bandwidth, time delay, packet loss, network state information such as out of order and the IPTV Business Stream information that will monitor are added up, analyzed, thereby calculate current IP TV service transmission quality index, as: shake frame losing, compression ratio, IR (IPTV service integration deliberated index) etc., wherein IR a kind ofly influences the video quality Comprehensive Assessment index that parameter draws by network quality to video, its span is 0～5, has represented successively by difference to the good and bad degree of good video quality.IPTV quality of service monitor reports network quality statistical information, IPTV service quality information, information is carried out this locality preserve;
(6) central server receives the IPTV service quality information.The information data that receives is shown in real time, be convenient to the keeper and check current network state, simultaneously data are unified backup;
(7) when IPTV quality of service monitor satisfies the mode of operation switching condition, enter the failure diagnosis mode of operation, IPTV quality of service monitor is gathered local IPTV Business Stream information, after carrying out preliminary statistical analysis, the unification of IPTV Business Stream is uploaded to the center monitors server, fault IPTV Business Stream is added up and analyzed in the situation of the whole network at the center monitors server end;
(8) after central server is analyzed the IPTV Business Stream information that reports, fault is positioned, issue Fault Diagnosis Strategy;
(9) IPTV quality of service monitor carries out malfunction elimination according to the diagnosis strategy, or waits for that the keeper manually removes fault, after fault is got rid of, sends troubleshooting information to central server;
(10) central server is confirmed troubleshooting information;
(11) after IPTV quality of service monitor is received confirmation, switch to the information monitoring mode of operation again.
Step (1)～(3) are the discovery procedures of IPTV quality of service monitor, assign new IPTV quality of service monitor if desired on network, repeat this operation and get final product, operating process is simple, can adapt to network size and enlarge, can specifically monitor according to concrete needs simultaneously.
The configuration of step (4) can realize realizing the monitoring to heterogeneous networks performance, IPTV Business Stream index according to concrete monitoring requirements, realize hommization, the rationalization of monitoring.
Step (5)～(6) are under the network normal condition, and to the monitoring of network, Business Stream quality information, the keeper can understand the integral status of current network according to the monitoring information of all monitoring points.
Step (7)～(10) are the diagnosis to network failure, central server can issue diagnostic instruction to warning IPTV quality of service monitor as required, also can issue diagnostic instruction, realize the collaborative failure diagnosis of IPTV quality of service monitor the IPTV quality of service monitor that closes on the alert detecting instrument.
Claims (3)
1. the monitoring method of a distributed IPTV service transmission quality is characterized in that, may further comprise the steps:
(1) central server is set;
(2) arrange IPTV quality of service monitor at network monitor point, network data is carried out bypass at its incoming end;
(3) central server is connected foundation with IPTV quality of service monitor, and the essential information of backup IPTV quality of service monitor;
(4) central server is configured the running parameter of IPTV quality of service monitor;
(5) IPTV quality of service monitor enters the information monitoring pattern, the quality information that monitors is reported, and this information is carried out this locality preserve;
(6) central server shows the quality information that receives in real time, is convenient to the keeper and checks current network state, simultaneously quality information is unified backup;
(7) when IPTV quality of service monitor satisfies the mode of operation switching condition, enter the failure diagnosis mode of operation, IPTV quality of service monitor is gathered local IPTV Business Stream information, carry out preliminary statistical analysis after, the unification of IPTV Business Stream is uploaded to central server;
(8) after central server is analyzed the IPTV Business Stream information of uploading, fault is positioned, issue Fault Diagnosis Strategy;
(9) IPTV quality of service monitor carries out malfunction elimination according to the diagnosis strategy, after fault is got rid of, sends troubleshooting information to central server.
(10) central server is confirmed troubleshooting information.
(11) after IPTV quality of service monitor is received confirmation, switch to the information monitoring mode of operation again.
2. the monitoring method of a kind of distributed IPTV service transmission quality according to claim 1 is characterized in that, described essential information comprises IP address, the monitor number information of IPTV quality of service monitor.
3. the monitoring method of a kind of distributed IPTV service transmission quality according to claim 1 and 2, it is characterized in that described running parameter comprises information report cycle, clock cycle, IPTV Business Stream to be monitored, the alarm threshold threshold value of each Business Stream.
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